wd.c revision 1.347
1 /* $NetBSD: wd.c,v 1.347 2007/10/19 11:59:37 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 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 1.347 2007/10/19 11:59:37 ad Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/vnode.h> 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <sys/intr.h> 97 #include <sys/bus.h> 98 99 #include <dev/ata/atareg.h> 100 #include <dev/ata/atavar.h> 101 #include <dev/ata/wdvar.h> 102 #include <dev/ic/wdcreg.h> 103 #include <sys/ataio.h> 104 #include "locators.h" 105 106 #include <prop/proplib.h> 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 CFATTACH_DECL(wd, sizeof(struct wd_softc), 143 wdprobe, wdattach, wddetach, wdactivate); 144 145 extern struct cfdriver wd_cd; 146 147 dev_type_open(wdopen); 148 dev_type_close(wdclose); 149 dev_type_read(wdread); 150 dev_type_write(wdwrite); 151 dev_type_ioctl(wdioctl); 152 dev_type_strategy(wdstrategy); 153 dev_type_dump(wddump); 154 dev_type_size(wdsize); 155 156 const struct bdevsw wd_bdevsw = { 157 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 158 }; 159 160 const struct cdevsw wd_cdevsw = { 161 wdopen, wdclose, wdread, wdwrite, wdioctl, 162 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 163 }; 164 165 /* 166 * Glue necessary to hook WDCIOCCOMMAND into physio 167 */ 168 169 struct wd_ioctl { 170 LIST_ENTRY(wd_ioctl) wi_list; 171 struct buf wi_bp; 172 struct uio wi_uio; 173 struct iovec wi_iov; 174 atareq_t wi_atareq; 175 struct wd_softc *wi_softc; 176 }; 177 178 LIST_HEAD(, wd_ioctl) wi_head; 179 180 struct wd_ioctl *wi_find(struct buf *); 181 void wi_free(struct wd_ioctl *); 182 struct wd_ioctl *wi_get(void); 183 void wdioctlstrategy(struct buf *); 184 185 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 186 void wdgetdisklabel(struct wd_softc *); 187 void wdstart(void *); 188 void __wdstart(struct wd_softc*, struct buf *); 189 void wdrestart(void *); 190 void wddone(void *); 191 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 192 int wd_standby(struct wd_softc *, int); 193 int wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy, minphys }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 207 208 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 209 210 /* 211 * Quirk table for IDE drives. Put more-specific matches first, since 212 * a simple globbing routine is used for matching. 213 */ 214 static const struct wd_quirk { 215 const char *wdq_match; /* inquiry pattern to match */ 216 int wdq_quirks; /* drive quirks */ 217 } wd_quirk_table[] = { 218 /* 219 * Some Seagate S-ATA drives have a PHY which can get confused 220 * with the way data is packetized by some S-ATA controllers. 221 * 222 * The work-around is to split in two any write transfer whose 223 * sector count % 15 == 1 (assuming 512 byte sectors). 224 * 225 * XXX This is an incomplete list. There are at least a couple 226 * XXX more model numbers. If you have trouble with such transfers 227 * XXX (8K is the most common) on Seagate S-ATA drives, please 228 * XXX notify thorpej (at) NetBSD.org. 229 */ 230 { "ST3120023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 { "ST380023AS", 233 WD_QUIRK_SPLIT_MOD15_WRITE }, 234 235 /* 236 * These seagate drives seems to have issue addressing sector 0xfffffff 237 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 238 * LBA48 239 * Note that we can't just change the code to always use LBA48 for 240 * sector 0xfffffff, because this would break valid and working 241 * setups using LBA48 drives on non-LBA48-capable controllers 242 * (and it's hard to get a list of such controllers) 243 */ 244 { "ST3160021A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160811A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160812A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 { "ST3160023A*", 251 WD_QUIRK_FORCE_LBA48 }, 252 { "ST3160827A*", 253 WD_QUIRK_FORCE_LBA48 }, 254 /* Attempt to catch all seagate drives larger than 200GB */ 255 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 256 WD_QUIRK_FORCE_LBA48 }, 257 { NULL, 258 0 } 259 }; 260 261 static const struct wd_quirk * 262 wd_lookup_quirks(const char *name) 263 { 264 const struct wd_quirk *wdq; 265 const char *estr; 266 267 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 268 /* 269 * We only want exact matches (which include matches 270 * against globbing characters). 271 */ 272 if (pmatch(name, wdq->wdq_match, &estr) == 2) 273 return (wdq); 274 } 275 return (NULL); 276 } 277 278 int 279 wdprobe(struct device *parent, struct cfdata *match, void *aux) 280 { 281 struct ata_device *adev = aux; 282 283 if (adev == NULL) 284 return 0; 285 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 286 return 0; 287 288 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 289 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 290 return 0; 291 return 1; 292 } 293 294 void 295 wdattach(struct device *parent, struct device *self, void *aux) 296 { 297 struct wd_softc *wd = (void *)self; 298 struct ata_device *adev= aux; 299 int i, blank; 300 char tbuf[41], pbuf[9], c, *p, *q; 301 const struct wd_quirk *wdq; 302 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 303 304 callout_init(&wd->sc_restart_ch, 0); 305 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 306 #ifdef WD_SOFTBADSECT 307 SLIST_INIT(&wd->sc_bslist); 308 #endif 309 wd->atabus = adev->adev_bustype; 310 wd->openings = adev->adev_openings; 311 wd->drvp = adev->adev_drv_data; 312 313 wd->drvp->drv_done = wddone; 314 wd->drvp->drv_softc = &wd->sc_dev; 315 316 aprint_naive("\n"); 317 318 /* read our drive info */ 319 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 320 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 321 return; 322 } 323 324 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 325 i < sizeof(wd->sc_params.atap_model); i++) { 326 c = *p++; 327 if (c == '\0') 328 break; 329 if (c != ' ') { 330 if (blank) { 331 *q++ = ' '; 332 blank = 0; 333 } 334 *q++ = c; 335 } else 336 blank = 1; 337 } 338 *q++ = '\0'; 339 340 aprint_normal(": <%s>\n", tbuf); 341 342 wdq = wd_lookup_quirks(tbuf); 343 if (wdq != NULL) 344 wd->sc_quirks = wdq->wdq_quirks; 345 346 if (wd->sc_quirks != 0) { 347 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 348 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 349 sbuf, sizeof(sbuf)); 350 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 351 } 352 353 if ((wd->sc_params.atap_multi & 0xff) > 1) { 354 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 355 } else { 356 wd->sc_multi = 1; 357 } 358 359 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 360 wd->sc_dev.dv_xname, wd->sc_multi); 361 362 /* 48-bit LBA addressing */ 363 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 364 wd->sc_flags |= WDF_LBA48; 365 366 /* Prior to ATA-4, LBA was optional. */ 367 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 368 wd->sc_flags |= WDF_LBA; 369 #if 0 370 /* ATA-4 requires LBA. */ 371 if (wd->sc_params.atap_ataversion != 0xffff && 372 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 373 wd->sc_flags |= WDF_LBA; 374 #endif 375 376 if ((wd->sc_flags & WDF_LBA48) != 0) { 377 aprint_verbose(" LBA48 addressing\n"); 378 wd->sc_capacity = 379 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 380 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 381 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 382 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 383 } else if ((wd->sc_flags & WDF_LBA) != 0) { 384 aprint_verbose(" LBA addressing\n"); 385 wd->sc_capacity = 386 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 387 wd->sc_params.atap_capacity[0]; 388 } else { 389 aprint_verbose(" chs addressing\n"); 390 wd->sc_capacity = 391 wd->sc_params.atap_cylinders * 392 wd->sc_params.atap_heads * 393 wd->sc_params.atap_sectors; 394 } 395 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 396 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 397 "%d bytes/sect x %llu sectors\n", 398 self->dv_xname, pbuf, 399 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 400 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 401 wd->sc_params.atap_cylinders, 402 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 403 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 404 405 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 406 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 407 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 408 /* 409 * Initialize and attach the disk structure. 410 */ 411 /* we fill in dk_info later */ 412 disk_init(&wd->sc_dk, wd->sc_dev.dv_xname, &wddkdriver); 413 disk_attach(&wd->sc_dk); 414 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 415 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 416 if (wd->sc_sdhook == NULL) 417 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 418 wd->sc_dev.dv_xname); 419 #if NRND > 0 420 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 421 RND_TYPE_DISK, 0); 422 #endif 423 424 /* Discover wedges on this disk. */ 425 dkwedge_discover(&wd->sc_dk); 426 } 427 428 int 429 wdactivate(struct device *self, enum devact act) 430 { 431 int rv = 0; 432 433 switch (act) { 434 case DVACT_ACTIVATE: 435 rv = EOPNOTSUPP; 436 break; 437 438 case DVACT_DEACTIVATE: 439 /* 440 * Nothing to do; we key off the device's DVF_ACTIVATE. 441 */ 442 break; 443 } 444 return (rv); 445 } 446 447 int 448 wddetach(struct device *self, int flags) 449 { 450 struct wd_softc *sc = (struct wd_softc *)self; 451 int s, bmaj, cmaj, i, mn; 452 453 /* locate the major number */ 454 bmaj = bdevsw_lookup_major(&wd_bdevsw); 455 cmaj = cdevsw_lookup_major(&wd_cdevsw); 456 457 /* Nuke the vnodes for any open instances. */ 458 for (i = 0; i < MAXPARTITIONS; i++) { 459 mn = WDMINOR(device_unit(self), i); 460 vdevgone(bmaj, mn, mn, VBLK); 461 vdevgone(cmaj, mn, mn, VCHR); 462 } 463 464 /* Delete all of our wedges. */ 465 dkwedge_delall(&sc->sc_dk); 466 467 s = splbio(); 468 469 /* Kill off any queued buffers. */ 470 bufq_drain(sc->sc_q); 471 472 bufq_free(sc->sc_q); 473 sc->atabus->ata_killpending(sc->drvp); 474 475 splx(s); 476 477 /* Detach disk. */ 478 disk_detach(&sc->sc_dk); 479 480 #ifdef WD_SOFTBADSECT 481 /* Clean out the bad sector list */ 482 while (!SLIST_EMPTY(&sc->sc_bslist)) { 483 void *head = SLIST_FIRST(&sc->sc_bslist); 484 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 485 free(head, M_TEMP); 486 } 487 sc->sc_bscount = 0; 488 #endif 489 490 /* Get rid of the shutdown hook. */ 491 if (sc->sc_sdhook != NULL) 492 shutdownhook_disestablish(sc->sc_sdhook); 493 494 #if NRND > 0 495 /* Unhook the entropy source. */ 496 rnd_detach_source(&sc->rnd_source); 497 #endif 498 499 sc->drvp->drive_flags = 0; /* no drive any more here */ 500 501 return (0); 502 } 503 504 /* 505 * Read/write routine for a buffer. Validates the arguments and schedules the 506 * transfer. Does not wait for the transfer to complete. 507 */ 508 void 509 wdstrategy(struct buf *bp) 510 { 511 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 512 struct disklabel *lp = wd->sc_dk.dk_label; 513 daddr_t blkno; 514 int s; 515 516 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 517 DEBUG_XFERS); 518 519 /* Valid request? */ 520 if (bp->b_blkno < 0 || 521 (bp->b_bcount % lp->d_secsize) != 0 || 522 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 523 bp->b_error = EINVAL; 524 goto done; 525 } 526 527 /* If device invalidated (e.g. media change, door open), error. */ 528 if ((wd->sc_flags & WDF_LOADED) == 0) { 529 bp->b_error = EIO; 530 goto done; 531 } 532 533 /* If it's a null transfer, return immediately. */ 534 if (bp->b_bcount == 0) 535 goto done; 536 537 /* 538 * Do bounds checking, adjust transfer. if error, process. 539 * If end of partition, just return. 540 */ 541 if (WDPART(bp->b_dev) == RAW_PART) { 542 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 543 wd->sc_capacity) <= 0) 544 goto done; 545 } else { 546 if (bounds_check_with_label(&wd->sc_dk, bp, 547 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 548 goto done; 549 } 550 551 /* 552 * Now convert the block number to absolute and put it in 553 * terms of the device's logical block size. 554 */ 555 if (lp->d_secsize >= DEV_BSIZE) 556 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 557 else 558 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 559 560 if (WDPART(bp->b_dev) != RAW_PART) 561 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 562 563 bp->b_rawblkno = blkno; 564 565 #ifdef WD_SOFTBADSECT 566 /* 567 * If the transfer about to be attempted contains only a block that 568 * is known to be bad then return an error for the transfer without 569 * even attempting to start a transfer up under the premis that we 570 * will just end up doing more retries for a transfer that will end 571 * up failing again. 572 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 573 */ 574 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 575 struct disk_badsectors *dbs; 576 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 577 578 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 579 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 580 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 581 bp->b_error = EIO; 582 goto done; 583 } 584 } 585 #endif 586 587 /* Queue transfer on drive, activate drive and controller if idle. */ 588 s = splbio(); 589 BUFQ_PUT(wd->sc_q, bp); 590 wdstart(wd); 591 splx(s); 592 return; 593 done: 594 /* Toss transfer; we're done early. */ 595 bp->b_resid = bp->b_bcount; 596 biodone(bp); 597 } 598 599 /* 600 * Queue a drive for I/O. 601 */ 602 void 603 wdstart(void *arg) 604 { 605 struct wd_softc *wd = arg; 606 struct buf *bp = NULL; 607 608 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 609 DEBUG_XFERS); 610 while (wd->openings > 0) { 611 612 /* Is there a buf for us ? */ 613 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 614 return; 615 616 /* 617 * Make the command. First lock the device 618 */ 619 wd->openings--; 620 621 wd->retries = 0; 622 __wdstart(wd, bp); 623 } 624 } 625 626 static void 627 wd_split_mod15_write(struct buf *bp) 628 { 629 struct buf *obp = bp->b_private; 630 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 631 632 if (__predict_false(bp->b_error != 0)) { 633 /* 634 * Propagate the error. If this was the first half of 635 * the original transfer, make sure to account for that 636 * in the residual. 637 */ 638 if (bp->b_data == obp->b_data) 639 bp->b_resid += bp->b_bcount; 640 goto done; 641 } 642 643 /* 644 * If this was the second half of the transfer, we're all done! 645 */ 646 if (bp->b_data != obp->b_data) 647 goto done; 648 649 /* 650 * Advance the pointer to the second half and issue that command 651 * using the same opening. 652 */ 653 bp->b_flags = obp->b_flags | B_CALL; 654 bp->b_data = (char *)bp->b_data + bp->b_bcount; 655 bp->b_blkno += (bp->b_bcount / 512); 656 bp->b_rawblkno += (bp->b_bcount / 512); 657 __wdstart(sc, bp); 658 return; 659 660 done: 661 obp->b_error = bp->b_error; 662 obp->b_resid = bp->b_resid; 663 putiobuf(bp); 664 biodone(obp); 665 sc->openings++; 666 /* wddone() will call wdstart() */ 667 } 668 669 void 670 __wdstart(struct wd_softc *wd, struct buf *bp) 671 { 672 673 /* 674 * Deal with the "split mod15 write" quirk. We just divide the 675 * transfer in two, doing the first half and then then second half 676 * with the same command opening. 677 * 678 * Note we MUST do this here, because we can't let insertion 679 * into the bufq cause the transfers to be re-merged. 680 */ 681 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 682 (bp->b_flags & B_READ) == 0 && 683 bp->b_bcount > 512 && 684 ((bp->b_bcount / 512) % 15) == 1)) { 685 struct buf *nbp; 686 687 /* already at splbio */ 688 nbp = getiobuf_nowait(); 689 if (__predict_false(nbp == NULL)) { 690 /* No memory -- fail the iop. */ 691 bp->b_error = ENOMEM; 692 bp->b_resid = bp->b_bcount; 693 biodone(bp); 694 wd->openings++; 695 return; 696 } 697 698 nbp->b_error = 0; 699 nbp->b_proc = bp->b_proc; 700 nbp->b_vp = NULLVP; 701 nbp->b_dev = bp->b_dev; 702 703 nbp->b_bcount = bp->b_bcount / 2; 704 nbp->b_bufsize = bp->b_bcount / 2; 705 nbp->b_data = bp->b_data; 706 707 nbp->b_blkno = bp->b_blkno; 708 nbp->b_rawblkno = bp->b_rawblkno; 709 710 nbp->b_flags = bp->b_flags | B_CALL; 711 nbp->b_iodone = wd_split_mod15_write; 712 713 /* Put ptr to orig buf in b_private and use new buf */ 714 nbp->b_private = bp; 715 716 BIO_COPYPRIO(nbp, bp); 717 718 bp = nbp; 719 } 720 721 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 722 wd->sc_wdc_bio.blkdone =0; 723 wd->sc_bp = bp; 724 /* 725 * If we're retrying, retry in single-sector mode. This will give us 726 * the sector number of the problem, and will eventually allow the 727 * transfer to succeed. 728 */ 729 if (wd->retries >= WDIORETRIES_SINGLE) 730 wd->sc_wdc_bio.flags = ATA_SINGLE; 731 else 732 wd->sc_wdc_bio.flags = 0; 733 if (wd->sc_flags & WDF_LBA48 && 734 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 735 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 736 wd->sc_wdc_bio.flags |= ATA_LBA48; 737 if (wd->sc_flags & WDF_LBA) 738 wd->sc_wdc_bio.flags |= ATA_LBA; 739 if (bp->b_flags & B_READ) 740 wd->sc_wdc_bio.flags |= ATA_READ; 741 wd->sc_wdc_bio.bcount = bp->b_bcount; 742 wd->sc_wdc_bio.databuf = bp->b_data; 743 /* Instrumentation. */ 744 disk_busy(&wd->sc_dk); 745 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 746 case ATACMD_TRY_AGAIN: 747 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 748 break; 749 case ATACMD_QUEUED: 750 case ATACMD_COMPLETE: 751 break; 752 default: 753 panic("__wdstart: bad return code from ata_bio()"); 754 } 755 } 756 757 void 758 wddone(void *v) 759 { 760 struct wd_softc *wd = v; 761 struct buf *bp = wd->sc_bp; 762 const char *errmsg; 763 int do_perror = 0; 764 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 765 DEBUG_XFERS); 766 int nblks; 767 768 if (bp == NULL) 769 return; 770 bp->b_resid = wd->sc_wdc_bio.bcount; 771 switch (wd->sc_wdc_bio.error) { 772 case ERR_DMA: 773 errmsg = "DMA error"; 774 goto retry; 775 case ERR_DF: 776 errmsg = "device fault"; 777 goto retry; 778 case TIMEOUT: 779 errmsg = "device timeout"; 780 goto retry; 781 case ERR_RESET: 782 errmsg = "channel reset"; 783 goto retry2; 784 case ERROR: 785 /* Don't care about media change bits */ 786 if (wd->sc_wdc_bio.r_error != 0 && 787 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 788 goto noerror; 789 errmsg = "error"; 790 do_perror = 1; 791 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 792 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 793 nblks = wd->sc_wdc_bio.bcount / 794 wd->sc_dk.dk_label->d_secsize; 795 /* 796 * If we get a "id not found" when crossing the 797 * LBA48_THRESHOLD, and the drive is larger than 798 * 128GB, then we can assume the drive has the 799 * LBA48 bug and we switch to LBA48. 800 */ 801 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 802 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 803 wd->sc_capacity > LBA48_THRESHOLD + 1) { 804 errmsg = "LBA48 bug"; 805 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 806 do_perror = 0; 807 goto retry2; 808 } 809 } 810 retry: /* Just reset and retry. Can we do more ? */ 811 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 812 retry2: 813 diskerr(bp, "wd", errmsg, LOG_PRINTF, 814 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 815 if (wd->retries < WDIORETRIES) 816 printf(", retrying"); 817 printf("\n"); 818 if (do_perror) 819 wdperror(wd); 820 if (wd->retries < WDIORETRIES) { 821 wd->retries++; 822 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 823 wdrestart, wd); 824 return; 825 } 826 827 #ifdef WD_SOFTBADSECT 828 /* 829 * Not all errors indicate a failed block but those that do, 830 * put the block on the bad-block list for the device. Only 831 * do this for reads because the drive should do it for writes, 832 * itself, according to Manuel. 833 */ 834 if ((bp->b_flags & B_READ) && 835 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 836 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 837 struct disk_badsectors *dbs; 838 839 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 840 dbs->dbs_min = bp->b_rawblkno; 841 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 842 microtime(&dbs->dbs_failedat); 843 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 844 wd->sc_bscount++; 845 } 846 #endif 847 bp->b_error = EIO; 848 break; 849 case NOERROR: 850 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 851 printf("%s: soft error (corrected)\n", 852 wd->sc_dev.dv_xname); 853 break; 854 case ERR_NODEV: 855 bp->b_error = EIO; 856 break; 857 } 858 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 859 (bp->b_flags & B_READ)); 860 #if NRND > 0 861 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 862 #endif 863 /* XXX Yuck, but we don't want to increment openings in this case */ 864 if (__predict_false((bp->b_flags & B_CALL) != 0 && 865 bp->b_iodone == wd_split_mod15_write)) 866 biodone(bp); 867 else { 868 biodone(bp); 869 wd->openings++; 870 } 871 wdstart(wd); 872 } 873 874 void 875 wdrestart(void *v) 876 { 877 struct wd_softc *wd = v; 878 struct buf *bp = wd->sc_bp; 879 int s; 880 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 881 DEBUG_XFERS); 882 883 s = splbio(); 884 __wdstart(v, bp); 885 splx(s); 886 } 887 888 int 889 wdread(dev_t dev, struct uio *uio, int flags) 890 { 891 892 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 893 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 894 } 895 896 int 897 wdwrite(dev_t dev, struct uio *uio, int flags) 898 { 899 900 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 901 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 902 } 903 904 int 905 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 906 { 907 struct wd_softc *wd; 908 int part, error; 909 910 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 911 wd = device_lookup(&wd_cd, WDUNIT(dev)); 912 if (wd == NULL) 913 return (ENXIO); 914 915 if (! device_is_active(&wd->sc_dev)) 916 return (ENODEV); 917 918 part = WDPART(dev); 919 920 mutex_enter(&wd->sc_dk.dk_openlock); 921 922 /* 923 * If there are wedges, and this is not RAW_PART, then we 924 * need to fail. 925 */ 926 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 927 error = EBUSY; 928 goto bad1; 929 } 930 931 /* 932 * If this is the first open of this device, add a reference 933 * to the adapter. 934 */ 935 if (wd->sc_dk.dk_openmask == 0 && 936 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 937 goto bad1; 938 939 if (wd->sc_dk.dk_openmask != 0) { 940 /* 941 * If any partition is open, but the disk has been invalidated, 942 * disallow further opens. 943 */ 944 if ((wd->sc_flags & WDF_LOADED) == 0) { 945 error = EIO; 946 goto bad2; 947 } 948 } else { 949 if ((wd->sc_flags & WDF_LOADED) == 0) { 950 wd->sc_flags |= WDF_LOADED; 951 952 /* Load the physical device parameters. */ 953 wd_get_params(wd, AT_WAIT, &wd->sc_params); 954 955 /* Load the partition info if not already loaded. */ 956 wdgetdisklabel(wd); 957 } 958 } 959 960 /* Check that the partition exists. */ 961 if (part != RAW_PART && 962 (part >= wd->sc_dk.dk_label->d_npartitions || 963 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 964 error = ENXIO; 965 goto bad2; 966 } 967 968 /* Insure only one open at a time. */ 969 switch (fmt) { 970 case S_IFCHR: 971 wd->sc_dk.dk_copenmask |= (1 << part); 972 break; 973 case S_IFBLK: 974 wd->sc_dk.dk_bopenmask |= (1 << part); 975 break; 976 } 977 wd->sc_dk.dk_openmask = 978 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 979 980 mutex_exit(&wd->sc_dk.dk_openlock); 981 return 0; 982 983 bad2: 984 if (wd->sc_dk.dk_openmask == 0) 985 wd->atabus->ata_delref(wd->drvp); 986 bad1: 987 mutex_exit(&wd->sc_dk.dk_openlock); 988 return error; 989 } 990 991 int 992 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 993 { 994 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 995 int part = WDPART(dev); 996 997 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 998 999 mutex_enter(&wd->sc_dk.dk_openlock); 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 1015 if (! (wd->sc_flags & WDF_KLABEL)) 1016 wd->sc_flags &= ~WDF_LOADED; 1017 1018 wd->atabus->ata_delref(wd->drvp); 1019 } 1020 1021 mutex_exit(&wd->sc_dk.dk_openlock); 1022 return 0; 1023 } 1024 1025 void 1026 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1027 { 1028 1029 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1030 memset(lp, 0, sizeof(struct disklabel)); 1031 1032 lp->d_secsize = DEV_BSIZE; 1033 lp->d_ntracks = wd->sc_params.atap_heads; 1034 lp->d_nsectors = wd->sc_params.atap_sectors; 1035 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1036 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1037 wd->sc_params.atap_cylinders; 1038 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1039 1040 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1041 lp->d_type = DTYPE_ST506; 1042 else 1043 lp->d_type = DTYPE_ESDI; 1044 1045 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1046 strncpy(lp->d_packname, "fictitious", 16); 1047 if (wd->sc_capacity > UINT32_MAX) 1048 lp->d_secperunit = UINT32_MAX; 1049 else 1050 lp->d_secperunit = wd->sc_capacity; 1051 lp->d_rpm = 3600; 1052 lp->d_interleave = 1; 1053 lp->d_flags = 0; 1054 1055 lp->d_partitions[RAW_PART].p_offset = 0; 1056 lp->d_partitions[RAW_PART].p_size = 1057 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1058 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1059 lp->d_npartitions = RAW_PART + 1; 1060 1061 lp->d_magic = DISKMAGIC; 1062 lp->d_magic2 = DISKMAGIC; 1063 lp->d_checksum = dkcksum(lp); 1064 } 1065 1066 /* 1067 * Fabricate a default disk label, and try to read the correct one. 1068 */ 1069 void 1070 wdgetdisklabel(struct wd_softc *wd) 1071 { 1072 struct disklabel *lp = wd->sc_dk.dk_label; 1073 const char *errstring; 1074 int s; 1075 1076 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1077 1078 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1079 1080 wdgetdefaultlabel(wd, lp); 1081 1082 wd->sc_badsect[0] = -1; 1083 1084 if (wd->drvp->state > RESET) { 1085 s = splbio(); 1086 wd->drvp->drive_flags |= DRIVE_RESET; 1087 splx(s); 1088 } 1089 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1090 RAW_PART), wdstrategy, lp, 1091 wd->sc_dk.dk_cpulabel); 1092 if (errstring) { 1093 /* 1094 * This probably happened because the drive's default 1095 * geometry doesn't match the DOS geometry. We 1096 * assume the DOS geometry is now in the label and try 1097 * again. XXX This is a kluge. 1098 */ 1099 if (wd->drvp->state > RESET) { 1100 s = splbio(); 1101 wd->drvp->drive_flags |= DRIVE_RESET; 1102 splx(s); 1103 } 1104 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1105 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1106 } 1107 if (errstring) { 1108 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1109 return; 1110 } 1111 1112 if (wd->drvp->state > RESET) { 1113 s = splbio(); 1114 wd->drvp->drive_flags |= DRIVE_RESET; 1115 splx(s); 1116 } 1117 #ifdef HAS_BAD144_HANDLING 1118 if ((lp->d_flags & D_BADSECT) != 0) 1119 bad144intern(wd); 1120 #endif 1121 } 1122 1123 void 1124 wdperror(const struct wd_softc *wd) 1125 { 1126 static const char *const errstr0_3[] = {"address mark not found", 1127 "track 0 not found", "aborted command", "media change requested", 1128 "id not found", "media changed", "uncorrectable data error", 1129 "bad block detected"}; 1130 static const char *const errstr4_5[] = { 1131 "obsolete (address mark not found)", 1132 "no media/write protected", "aborted command", 1133 "media change requested", "id not found", "media changed", 1134 "uncorrectable data error", "interface CRC error"}; 1135 const char *const *errstr; 1136 int i; 1137 const char *sep = ""; 1138 1139 const char *devname = wd->sc_dev.dv_xname; 1140 struct ata_drive_datas *drvp = wd->drvp; 1141 int errno = wd->sc_wdc_bio.r_error; 1142 1143 if (drvp->ata_vers >= 4) 1144 errstr = errstr4_5; 1145 else 1146 errstr = errstr0_3; 1147 1148 printf("%s: (", devname); 1149 1150 if (errno == 0) 1151 printf("error not notified"); 1152 1153 for (i = 0; i < 8; i++) { 1154 if (errno & (1 << i)) { 1155 printf("%s%s", sep, errstr[i]); 1156 sep = ", "; 1157 } 1158 } 1159 printf(")\n"); 1160 } 1161 1162 int 1163 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1164 { 1165 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1166 int error = 0, s; 1167 #ifdef __HAVE_OLD_DISKLABEL 1168 struct disklabel *newlabel = NULL; 1169 #endif 1170 1171 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1172 1173 if ((wd->sc_flags & WDF_LOADED) == 0) 1174 return EIO; 1175 1176 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1177 if (error != EPASSTHROUGH) 1178 return (error); 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 #ifdef WD_SOFTBADSECT 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 uint8_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 = (uint8_t *)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 #endif 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 mutex_enter(&wd->sc_dk.dk_openlock); 1293 wd->sc_flags |= WDF_LABELLING; 1294 1295 error = setdisklabel(wd->sc_dk.dk_label, 1296 lp, /*wd->sc_dk.dk_openmask : */0, 1297 wd->sc_dk.dk_cpulabel); 1298 if (error == 0) { 1299 if (wd->drvp->state > RESET) { 1300 s = splbio(); 1301 wd->drvp->drive_flags |= DRIVE_RESET; 1302 splx(s); 1303 } 1304 if (xfer == DIOCWDINFO 1305 #ifdef __HAVE_OLD_DISKLABEL 1306 || xfer == ODIOCWDINFO 1307 #endif 1308 ) 1309 error = writedisklabel(WDLABELDEV(dev), 1310 wdstrategy, wd->sc_dk.dk_label, 1311 wd->sc_dk.dk_cpulabel); 1312 } 1313 1314 wd->sc_flags &= ~WDF_LABELLING; 1315 mutex_exit(&wd->sc_dk.dk_openlock); 1316 #ifdef __HAVE_OLD_DISKLABEL 1317 if (newlabel != NULL) 1318 free(newlabel, M_TEMP); 1319 #endif 1320 return error; 1321 } 1322 1323 case DIOCKLABEL: 1324 if (*(int *)addr) 1325 wd->sc_flags |= WDF_KLABEL; 1326 else 1327 wd->sc_flags &= ~WDF_KLABEL; 1328 return 0; 1329 1330 case DIOCWLABEL: 1331 if ((flag & FWRITE) == 0) 1332 return EBADF; 1333 if (*(int *)addr) 1334 wd->sc_flags |= WDF_WLABEL; 1335 else 1336 wd->sc_flags &= ~WDF_WLABEL; 1337 return 0; 1338 1339 case DIOCGDEFLABEL: 1340 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1341 return 0; 1342 #ifdef __HAVE_OLD_DISKLABEL 1343 case ODIOCGDEFLABEL: 1344 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1345 if (newlabel == NULL) 1346 return EIO; 1347 wdgetdefaultlabel(wd, newlabel); 1348 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1349 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1350 else 1351 error = ENOTTY; 1352 free(newlabel, M_TEMP); 1353 return error; 1354 #endif 1355 1356 #ifdef notyet 1357 case DIOCWFORMAT: 1358 if ((flag & FWRITE) == 0) 1359 return EBADF; 1360 { 1361 register struct format_op *fop; 1362 struct iovec aiov; 1363 struct uio auio; 1364 1365 fop = (struct format_op *)addr; 1366 aiov.iov_base = fop->df_buf; 1367 aiov.iov_len = fop->df_count; 1368 auio.uio_iov = &aiov; 1369 auio.uio_iovcnt = 1; 1370 auio.uio_resid = fop->df_count; 1371 auio.uio_offset = 1372 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1373 auio.uio_vmspace = l->l_proc->p_vmspace; 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 case DIOCGCACHE: 1383 return wd_getcache(wd, (int *)addr); 1384 1385 case DIOCSCACHE: 1386 return wd_setcache(wd, *(int *)addr); 1387 1388 case DIOCCACHESYNC: 1389 return wd_flushcache(wd, AT_WAIT); 1390 1391 case ATAIOCCOMMAND: 1392 /* 1393 * Make sure this command is (relatively) safe first 1394 */ 1395 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1396 (flag & FWRITE) == 0) 1397 return (EBADF); 1398 { 1399 struct wd_ioctl *wi; 1400 atareq_t *atareq = (atareq_t *) addr; 1401 int error1; 1402 1403 wi = wi_get(); 1404 wi->wi_softc = wd; 1405 wi->wi_atareq = *atareq; 1406 1407 if (atareq->datalen && atareq->flags & 1408 (ATACMD_READ | ATACMD_WRITE)) { 1409 void *tbuf; 1410 if (atareq->datalen < DEV_BSIZE 1411 && atareq->command == WDCC_IDENTIFY) { 1412 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1413 wi->wi_iov.iov_base = tbuf; 1414 wi->wi_iov.iov_len = DEV_BSIZE; 1415 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1416 } else { 1417 tbuf = NULL; 1418 wi->wi_iov.iov_base = atareq->databuf; 1419 wi->wi_iov.iov_len = atareq->datalen; 1420 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1421 } 1422 wi->wi_uio.uio_iov = &wi->wi_iov; 1423 wi->wi_uio.uio_iovcnt = 1; 1424 wi->wi_uio.uio_resid = atareq->datalen; 1425 wi->wi_uio.uio_offset = 0; 1426 wi->wi_uio.uio_rw = 1427 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1428 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1429 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1430 minphys, &wi->wi_uio); 1431 if (tbuf != NULL && error1 == 0) { 1432 error1 = copyout(tbuf, atareq->databuf, 1433 atareq->datalen); 1434 free(tbuf, M_TEMP); 1435 } 1436 } else { 1437 /* No need to call physio if we don't have any 1438 user data */ 1439 wi->wi_bp.b_flags = 0; 1440 wi->wi_bp.b_data = 0; 1441 wi->wi_bp.b_bcount = 0; 1442 wi->wi_bp.b_dev = 0; 1443 wi->wi_bp.b_proc = l->l_proc; 1444 wdioctlstrategy(&wi->wi_bp); 1445 error1 = wi->wi_bp.b_error; 1446 } 1447 *atareq = wi->wi_atareq; 1448 wi_free(wi); 1449 return(error1); 1450 } 1451 1452 case DIOCAWEDGE: 1453 { 1454 struct dkwedge_info *dkw = (void *) addr; 1455 1456 if ((flag & FWRITE) == 0) 1457 return (EBADF); 1458 1459 /* If the ioctl happens here, the parent is us. */ 1460 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1461 return (dkwedge_add(dkw)); 1462 } 1463 1464 case DIOCDWEDGE: 1465 { 1466 struct dkwedge_info *dkw = (void *) addr; 1467 1468 if ((flag & FWRITE) == 0) 1469 return (EBADF); 1470 1471 /* If the ioctl happens here, the parent is us. */ 1472 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1473 return (dkwedge_del(dkw)); 1474 } 1475 1476 case DIOCLWEDGES: 1477 { 1478 struct dkwedge_list *dkwl = (void *) addr; 1479 1480 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1481 } 1482 1483 case DIOCGSTRATEGY: 1484 { 1485 struct disk_strategy *dks = (void *)addr; 1486 1487 s = splbio(); 1488 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1489 sizeof(dks->dks_name)); 1490 splx(s); 1491 dks->dks_paramlen = 0; 1492 1493 return 0; 1494 } 1495 1496 case DIOCSSTRATEGY: 1497 { 1498 struct disk_strategy *dks = (void *)addr; 1499 struct bufq_state *new; 1500 struct bufq_state *old; 1501 1502 if ((flag & FWRITE) == 0) { 1503 return EBADF; 1504 } 1505 if (dks->dks_param != NULL) { 1506 return EINVAL; 1507 } 1508 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1509 error = bufq_alloc(&new, dks->dks_name, 1510 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1511 if (error) { 1512 return error; 1513 } 1514 s = splbio(); 1515 old = wd->sc_q; 1516 bufq_move(new, old); 1517 wd->sc_q = new; 1518 splx(s); 1519 bufq_free(old); 1520 1521 return 0; 1522 } 1523 1524 default: 1525 return ENOTTY; 1526 } 1527 1528 #ifdef DIAGNOSTIC 1529 panic("wdioctl: impossible"); 1530 #endif 1531 } 1532 1533 #ifdef B_FORMAT 1534 int 1535 wdformat(struct buf *bp) 1536 { 1537 1538 bp->b_flags |= B_FORMAT; 1539 return wdstrategy(bp); 1540 } 1541 #endif 1542 1543 int 1544 wdsize(dev_t dev) 1545 { 1546 struct wd_softc *wd; 1547 int part, omask; 1548 int size; 1549 1550 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1551 1552 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1553 if (wd == NULL) 1554 return (-1); 1555 1556 part = WDPART(dev); 1557 omask = wd->sc_dk.dk_openmask & (1 << part); 1558 1559 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1560 return (-1); 1561 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1562 size = -1; 1563 else 1564 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1565 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1566 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1567 return (-1); 1568 return (size); 1569 } 1570 1571 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1572 static int wddoingadump = 0; 1573 static int wddumprecalibrated = 0; 1574 1575 /* 1576 * Dump core after a system crash. 1577 */ 1578 int 1579 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1580 { 1581 struct wd_softc *wd; /* disk unit to do the I/O */ 1582 struct disklabel *lp; /* disk's disklabel */ 1583 int part, err; 1584 int nblks; /* total number of sectors left to write */ 1585 1586 /* Check if recursive dump; if so, punt. */ 1587 if (wddoingadump) 1588 return EFAULT; 1589 wddoingadump = 1; 1590 1591 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1592 if (wd == NULL) 1593 return (ENXIO); 1594 1595 part = WDPART(dev); 1596 1597 /* Convert to disk sectors. Request must be a multiple of size. */ 1598 lp = wd->sc_dk.dk_label; 1599 if ((size % lp->d_secsize) != 0) 1600 return EFAULT; 1601 nblks = size / lp->d_secsize; 1602 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1603 1604 /* Check transfer bounds against partition size. */ 1605 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1606 return EINVAL; 1607 1608 /* Offset block number to start of partition. */ 1609 blkno += lp->d_partitions[part].p_offset; 1610 1611 /* Recalibrate, if first dump transfer. */ 1612 if (wddumprecalibrated == 0) { 1613 wddumprecalibrated = 1; 1614 (*wd->atabus->ata_reset_drive)(wd->drvp, 1615 AT_POLL | AT_RST_EMERG); 1616 wd->drvp->state = RESET; 1617 } 1618 1619 wd->sc_bp = NULL; 1620 wd->sc_wdc_bio.blkno = blkno; 1621 wd->sc_wdc_bio.flags = ATA_POLL; 1622 if (wd->sc_flags & WDF_LBA48 && 1623 (blkno > LBA48_THRESHOLD || 1624 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1625 wd->sc_wdc_bio.flags |= ATA_LBA48; 1626 if (wd->sc_flags & WDF_LBA) 1627 wd->sc_wdc_bio.flags |= ATA_LBA; 1628 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1629 wd->sc_wdc_bio.databuf = va; 1630 #ifndef WD_DUMP_NOT_TRUSTED 1631 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1632 case ATACMD_TRY_AGAIN: 1633 panic("wddump: try again"); 1634 break; 1635 case ATACMD_QUEUED: 1636 panic("wddump: polled command has been queued"); 1637 break; 1638 case ATACMD_COMPLETE: 1639 break; 1640 } 1641 switch(wd->sc_wdc_bio.error) { 1642 case TIMEOUT: 1643 printf("wddump: device timed out"); 1644 err = EIO; 1645 break; 1646 case ERR_DF: 1647 printf("wddump: drive fault"); 1648 err = EIO; 1649 break; 1650 case ERR_DMA: 1651 printf("wddump: DMA error"); 1652 err = EIO; 1653 break; 1654 case ERROR: 1655 printf("wddump: "); 1656 wdperror(wd); 1657 err = EIO; 1658 break; 1659 case NOERROR: 1660 err = 0; 1661 break; 1662 default: 1663 panic("wddump: unknown error type"); 1664 } 1665 if (err != 0) { 1666 printf("\n"); 1667 return err; 1668 } 1669 #else /* WD_DUMP_NOT_TRUSTED */ 1670 /* Let's just talk about this first... */ 1671 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1672 unit, va, cylin, head, sector); 1673 delay(500 * 1000); /* half a second */ 1674 #endif 1675 1676 wddoingadump = 0; 1677 return 0; 1678 } 1679 1680 #ifdef HAS_BAD144_HANDLING 1681 /* 1682 * Internalize the bad sector table. 1683 */ 1684 void 1685 bad144intern(struct wd_softc *wd) 1686 { 1687 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1688 struct disklabel *lp = wd->sc_dk.dk_label; 1689 int i = 0; 1690 1691 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1692 1693 for (; i < NBT_BAD; i++) { 1694 if (bt->bt_bad[i].bt_cyl == 0xffff) 1695 break; 1696 wd->sc_badsect[i] = 1697 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1698 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1699 (bt->bt_bad[i].bt_trksec & 0xff); 1700 } 1701 for (; i < NBT_BAD+1; i++) 1702 wd->sc_badsect[i] = -1; 1703 } 1704 #endif 1705 1706 static void 1707 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1708 { 1709 prop_dictionary_t disk_info, odisk_info, geom; 1710 const char *cp; 1711 1712 disk_info = prop_dictionary_create(); 1713 1714 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1715 cp = "ST506"; 1716 else { 1717 /* XXX Should have a case for ATA here, too. */ 1718 cp = "ESDI"; 1719 } 1720 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1721 1722 geom = prop_dictionary_create(); 1723 1724 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1725 1726 prop_dictionary_set_uint32(geom, "sector-size", 1727 DEV_BSIZE /* XXX 512? */); 1728 1729 prop_dictionary_set_uint16(geom, "sectors-per-track", 1730 wd->sc_params.atap_sectors); 1731 1732 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1733 wd->sc_params.atap_heads); 1734 1735 if (wd->sc_flags & WDF_LBA) 1736 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1737 wd->sc_capacity / 1738 (wd->sc_params.atap_heads * 1739 wd->sc_params.atap_sectors)); 1740 else 1741 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1742 wd->sc_params.atap_cylinders); 1743 1744 prop_dictionary_set(disk_info, "geometry", geom); 1745 prop_object_release(geom); 1746 1747 prop_dictionary_set(device_properties(&wd->sc_dev), 1748 "disk-info", disk_info); 1749 1750 /* 1751 * Don't release disk_info here; we keep a reference to it. 1752 * disk_detach() will release it when we go away. 1753 */ 1754 1755 odisk_info = wd->sc_dk.dk_info; 1756 wd->sc_dk.dk_info = disk_info; 1757 if (odisk_info) 1758 prop_object_release(odisk_info); 1759 } 1760 1761 int 1762 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1763 { 1764 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1765 case CMD_AGAIN: 1766 return 1; 1767 case CMD_ERR: 1768 /* 1769 * We `know' there's a drive here; just assume it's old. 1770 * This geometry is only used to read the MBR and print a 1771 * (false) attach message. 1772 */ 1773 strncpy(params->atap_model, "ST506", 1774 sizeof params->atap_model); 1775 params->atap_config = ATA_CFG_FIXED; 1776 params->atap_cylinders = 1024; 1777 params->atap_heads = 8; 1778 params->atap_sectors = 17; 1779 params->atap_multi = 1; 1780 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1781 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1782 /* FALLTHROUGH */ 1783 case CMD_OK: 1784 wd_params_to_properties(wd, params); 1785 return 0; 1786 default: 1787 panic("wd_get_params: bad return code from ata_get_params"); 1788 /* NOTREACHED */ 1789 } 1790 } 1791 1792 int 1793 wd_getcache(struct wd_softc *wd, int *bitsp) 1794 { 1795 struct ataparams params; 1796 1797 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1798 return EIO; 1799 if (params.atap_cmd_set1 == 0x0000 || 1800 params.atap_cmd_set1 == 0xffff || 1801 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1802 *bitsp = 0; 1803 return 0; 1804 } 1805 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1806 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1807 *bitsp |= DKCACHE_WRITE; 1808 1809 return 0; 1810 } 1811 1812 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1813 1814 int 1815 wd_setcache(struct wd_softc *wd, int bits) 1816 { 1817 struct ataparams params; 1818 struct ata_command ata_c; 1819 1820 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1821 return EIO; 1822 1823 if (params.atap_cmd_set1 == 0x0000 || 1824 params.atap_cmd_set1 == 0xffff || 1825 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1826 return EOPNOTSUPP; 1827 1828 if ((bits & DKCACHE_READ) == 0 || 1829 (bits & DKCACHE_SAVE) != 0) 1830 return EOPNOTSUPP; 1831 1832 memset(&ata_c, 0, sizeof(struct ata_command)); 1833 ata_c.r_command = SET_FEATURES; 1834 ata_c.r_st_bmask = 0; 1835 ata_c.r_st_pmask = 0; 1836 ata_c.timeout = 30000; /* 30s timeout */ 1837 ata_c.flags = AT_WAIT; 1838 if (bits & DKCACHE_WRITE) 1839 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1840 else 1841 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1842 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1843 printf("%s: wd_setcache command not complete\n", 1844 wd->sc_dev.dv_xname); 1845 return EIO; 1846 } 1847 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1848 char sbuf[sizeof(at_errbits) + 64]; 1849 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1850 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1851 sbuf); 1852 return EIO; 1853 } 1854 return 0; 1855 } 1856 1857 int 1858 wd_standby(struct wd_softc *wd, int flags) 1859 { 1860 struct ata_command ata_c; 1861 1862 memset(&ata_c, 0, sizeof(struct ata_command)); 1863 ata_c.r_command = WDCC_STANDBY_IMMED; 1864 ata_c.r_st_bmask = WDCS_DRDY; 1865 ata_c.r_st_pmask = WDCS_DRDY; 1866 ata_c.flags = flags; 1867 ata_c.timeout = 30000; /* 30s timeout */ 1868 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1869 printf("%s: standby immediate command didn't complete\n", 1870 wd->sc_dev.dv_xname); 1871 return EIO; 1872 } 1873 if (ata_c.flags & AT_ERROR) { 1874 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1875 return ENODEV; 1876 } 1877 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1878 char sbuf[sizeof(at_errbits) + 64]; 1879 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1880 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1881 sbuf); 1882 return EIO; 1883 } 1884 return 0; 1885 } 1886 1887 int 1888 wd_flushcache(struct wd_softc *wd, int flags) 1889 { 1890 struct ata_command ata_c; 1891 1892 /* 1893 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1894 * only ATA-2 and still support it. 1895 */ 1896 if (wd->drvp->ata_vers < 4 && 1897 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1898 wd->sc_params.atap_cmd_set2 == 0xffff)) 1899 return ENODEV; 1900 memset(&ata_c, 0, sizeof(struct ata_command)); 1901 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1902 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1903 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1904 else 1905 ata_c.r_command = WDCC_FLUSHCACHE; 1906 ata_c.r_st_bmask = WDCS_DRDY; 1907 ata_c.r_st_pmask = WDCS_DRDY; 1908 ata_c.flags = flags; 1909 ata_c.timeout = 30000; /* 30s timeout */ 1910 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1911 printf("%s: flush cache command didn't complete\n", 1912 wd->sc_dev.dv_xname); 1913 return EIO; 1914 } 1915 if (ata_c.flags & AT_ERROR) { 1916 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1917 return ENODEV; 1918 } 1919 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1920 char sbuf[sizeof(at_errbits) + 64]; 1921 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1922 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1923 sbuf); 1924 return EIO; 1925 } 1926 return 0; 1927 } 1928 1929 void 1930 wd_shutdown(void *arg) 1931 { 1932 struct wd_softc *wd = arg; 1933 wd_flushcache(wd, AT_POLL); 1934 } 1935 1936 /* 1937 * Allocate space for a ioctl queue structure. Mostly taken from 1938 * scsipi_ioctl.c 1939 */ 1940 struct wd_ioctl * 1941 wi_get(void) 1942 { 1943 struct wd_ioctl *wi; 1944 int s; 1945 1946 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1947 simple_lock_init(&wi->wi_bp.b_interlock); 1948 s = splbio(); 1949 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1950 splx(s); 1951 return (wi); 1952 } 1953 1954 /* 1955 * Free an ioctl structure and remove it from our list 1956 */ 1957 1958 void 1959 wi_free(struct wd_ioctl *wi) 1960 { 1961 int s; 1962 1963 s = splbio(); 1964 LIST_REMOVE(wi, wi_list); 1965 splx(s); 1966 free(wi, M_TEMP); 1967 } 1968 1969 /* 1970 * Find a wd_ioctl structure based on the struct buf. 1971 */ 1972 1973 struct wd_ioctl * 1974 wi_find(struct buf *bp) 1975 { 1976 struct wd_ioctl *wi; 1977 int s; 1978 1979 s = splbio(); 1980 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1981 if (bp == &wi->wi_bp) 1982 break; 1983 splx(s); 1984 return (wi); 1985 } 1986 1987 /* 1988 * Ioctl pseudo strategy routine 1989 * 1990 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1991 * happens here is: 1992 * 1993 * - wdioctl() queues a wd_ioctl structure. 1994 * 1995 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1996 * user space I/O is required. If physio() is called, physio() eventually 1997 * calls wdioctlstrategy(). 1998 * 1999 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2000 * to perform the actual command 2001 * 2002 * The reason for the use of the pseudo strategy routine is because 2003 * when doing I/O to/from user space, physio _really_ wants to be in 2004 * the loop. We could put the entire buffer into the ioctl request 2005 * structure, but that won't scale if we want to do things like download 2006 * microcode. 2007 */ 2008 2009 void 2010 wdioctlstrategy(struct buf *bp) 2011 { 2012 struct wd_ioctl *wi; 2013 struct ata_command ata_c; 2014 int error = 0; 2015 2016 wi = wi_find(bp); 2017 if (wi == NULL) { 2018 printf("wdioctlstrategy: " 2019 "No matching ioctl request found in queue\n"); 2020 error = EINVAL; 2021 goto done; 2022 } 2023 2024 memset(&ata_c, 0, sizeof(ata_c)); 2025 2026 /* 2027 * Abort if physio broke up the transfer 2028 */ 2029 2030 if (bp->b_bcount != wi->wi_atareq.datalen) { 2031 printf("physio split wd ioctl request... cannot proceed\n"); 2032 error = EIO; 2033 goto done; 2034 } 2035 2036 /* 2037 * Abort if we didn't get a buffer size that was a multiple of 2038 * our sector size (or was larger than NBBY) 2039 */ 2040 2041 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2042 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2043 (1 << NBBY)) { 2044 error = EINVAL; 2045 goto done; 2046 } 2047 2048 /* 2049 * Make sure a timeout was supplied in the ioctl request 2050 */ 2051 2052 if (wi->wi_atareq.timeout == 0) { 2053 error = EINVAL; 2054 goto done; 2055 } 2056 2057 if (wi->wi_atareq.flags & ATACMD_READ) 2058 ata_c.flags |= AT_READ; 2059 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2060 ata_c.flags |= AT_WRITE; 2061 2062 if (wi->wi_atareq.flags & ATACMD_READREG) 2063 ata_c.flags |= AT_READREG; 2064 2065 ata_c.flags |= AT_WAIT; 2066 2067 ata_c.timeout = wi->wi_atareq.timeout; 2068 ata_c.r_command = wi->wi_atareq.command; 2069 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2070 ata_c.r_cyl = wi->wi_atareq.cylinder; 2071 ata_c.r_sector = wi->wi_atareq.sec_num; 2072 ata_c.r_count = wi->wi_atareq.sec_count; 2073 ata_c.r_features = wi->wi_atareq.features; 2074 ata_c.r_st_bmask = WDCS_DRDY; 2075 ata_c.r_st_pmask = WDCS_DRDY; 2076 ata_c.data = wi->wi_bp.b_data; 2077 ata_c.bcount = wi->wi_bp.b_bcount; 2078 2079 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2080 != ATACMD_COMPLETE) { 2081 wi->wi_atareq.retsts = ATACMD_ERROR; 2082 error = EIO; 2083 goto done; 2084 } 2085 2086 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2087 if (ata_c.flags & AT_ERROR) { 2088 wi->wi_atareq.retsts = ATACMD_ERROR; 2089 wi->wi_atareq.error = ata_c.r_error; 2090 } else if (ata_c.flags & AT_DF) 2091 wi->wi_atareq.retsts = ATACMD_DF; 2092 else 2093 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2094 } else { 2095 wi->wi_atareq.retsts = ATACMD_OK; 2096 if (wi->wi_atareq.flags & ATACMD_READREG) { 2097 wi->wi_atareq.head = ata_c.r_head ; 2098 wi->wi_atareq.cylinder = ata_c.r_cyl; 2099 wi->wi_atareq.sec_num = ata_c.r_sector; 2100 wi->wi_atareq.sec_count = ata_c.r_count; 2101 wi->wi_atareq.features = ata_c.r_features; 2102 wi->wi_atareq.error = ata_c.r_error; 2103 } 2104 } 2105 2106 done: 2107 bp->b_error = error; 2108 biodone(bp); 2109 } 2110
Indexes created Tue Sep 30 06:09:59 GMT 2025