wd.c revision 1.350.2.1
1 /* $NetBSD: wd.c,v 1.350.2.1 2007/12/04 13:02:56 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 1.350.2.1 2007/12/04 13:02:56 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 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 258 WD_QUIRK_FORCE_LBA48 }, 259 { NULL, 260 0 } 261 }; 262 263 static const struct wd_quirk * 264 wd_lookup_quirks(const char *name) 265 { 266 const struct wd_quirk *wdq; 267 const char *estr; 268 269 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 270 /* 271 * We only want exact matches (which include matches 272 * against globbing characters). 273 */ 274 if (pmatch(name, wdq->wdq_match, &estr) == 2) 275 return (wdq); 276 } 277 return (NULL); 278 } 279 280 int 281 wdprobe(struct device *parent, struct cfdata *match, void *aux) 282 { 283 struct ata_device *adev = aux; 284 285 if (adev == NULL) 286 return 0; 287 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 288 return 0; 289 290 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 291 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 292 return 0; 293 return 1; 294 } 295 296 void 297 wdattach(struct device *parent, struct device *self, void *aux) 298 { 299 struct wd_softc *wd = (void *)self; 300 struct ata_device *adev= aux; 301 int i, blank; 302 char tbuf[41], pbuf[9], c, *p, *q; 303 const struct wd_quirk *wdq; 304 305 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 306 callout_init(&wd->sc_restart_ch, 0); 307 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 308 #ifdef WD_SOFTBADSECT 309 SLIST_INIT(&wd->sc_bslist); 310 #endif 311 wd->atabus = adev->adev_bustype; 312 wd->openings = adev->adev_openings; 313 wd->drvp = adev->adev_drv_data; 314 315 wd->drvp->drv_done = wddone; 316 wd->drvp->drv_softc = &wd->sc_dev; 317 318 aprint_naive("\n"); 319 320 /* read our drive info */ 321 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 322 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 323 return; 324 } 325 326 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 327 i < sizeof(wd->sc_params.atap_model); i++) { 328 c = *p++; 329 if (c == '\0') 330 break; 331 if (c != ' ') { 332 if (blank) { 333 *q++ = ' '; 334 blank = 0; 335 } 336 *q++ = c; 337 } else 338 blank = 1; 339 } 340 *q++ = '\0'; 341 342 aprint_normal(": <%s>\n", tbuf); 343 344 wdq = wd_lookup_quirks(tbuf); 345 if (wdq != NULL) 346 wd->sc_quirks = wdq->wdq_quirks; 347 348 if (wd->sc_quirks != 0) { 349 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 350 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 351 sbuf, sizeof(sbuf)); 352 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 353 } 354 355 if ((wd->sc_params.atap_multi & 0xff) > 1) { 356 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 357 } else { 358 wd->sc_multi = 1; 359 } 360 361 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 362 wd->sc_dev.dv_xname, wd->sc_multi); 363 364 /* 48-bit LBA addressing */ 365 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 366 wd->sc_flags |= WDF_LBA48; 367 368 /* Prior to ATA-4, LBA was optional. */ 369 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 370 wd->sc_flags |= WDF_LBA; 371 #if 0 372 /* ATA-4 requires LBA. */ 373 if (wd->sc_params.atap_ataversion != 0xffff && 374 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 375 wd->sc_flags |= WDF_LBA; 376 #endif 377 378 if ((wd->sc_flags & WDF_LBA48) != 0) { 379 aprint_verbose(" LBA48 addressing\n"); 380 wd->sc_capacity = 381 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 382 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 383 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 384 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 385 } else if ((wd->sc_flags & WDF_LBA) != 0) { 386 aprint_verbose(" LBA addressing\n"); 387 wd->sc_capacity = 388 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 389 wd->sc_params.atap_capacity[0]; 390 } else { 391 aprint_verbose(" chs addressing\n"); 392 wd->sc_capacity = 393 wd->sc_params.atap_cylinders * 394 wd->sc_params.atap_heads * 395 wd->sc_params.atap_sectors; 396 } 397 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 398 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 399 "%d bytes/sect x %llu sectors\n", 400 self->dv_xname, pbuf, 401 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 402 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 403 wd->sc_params.atap_cylinders, 404 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 405 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 406 407 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 408 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 409 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 410 /* 411 * Initialize and attach the disk structure. 412 */ 413 /* we fill in dk_info later */ 414 disk_init(&wd->sc_dk, wd->sc_dev.dv_xname, &wddkdriver); 415 disk_attach(&wd->sc_dk); 416 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 417 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 418 if (wd->sc_sdhook == NULL) 419 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 420 wd->sc_dev.dv_xname); 421 #if NRND > 0 422 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 423 RND_TYPE_DISK, 0); 424 #endif 425 426 /* Discover wedges on this disk. */ 427 dkwedge_discover(&wd->sc_dk); 428 } 429 430 int 431 wdactivate(struct device *self, enum devact act) 432 { 433 int rv = 0; 434 435 switch (act) { 436 case DVACT_ACTIVATE: 437 rv = EOPNOTSUPP; 438 break; 439 440 case DVACT_DEACTIVATE: 441 /* 442 * Nothing to do; we key off the device's DVF_ACTIVATE. 443 */ 444 break; 445 } 446 return (rv); 447 } 448 449 int 450 wddetach(struct device *self, int flags) 451 { 452 struct wd_softc *sc = (struct wd_softc *)self; 453 int s, bmaj, cmaj, i, mn; 454 455 /* locate the major number */ 456 bmaj = bdevsw_lookup_major(&wd_bdevsw); 457 cmaj = cdevsw_lookup_major(&wd_cdevsw); 458 459 /* Nuke the vnodes for any open instances. */ 460 for (i = 0; i < MAXPARTITIONS; i++) { 461 mn = WDMINOR(device_unit(self), i); 462 vdevgone(bmaj, mn, mn, VBLK); 463 vdevgone(cmaj, mn, mn, VCHR); 464 } 465 466 /* Delete all of our wedges. */ 467 dkwedge_delall(&sc->sc_dk); 468 469 s = splbio(); 470 471 /* Kill off any queued buffers. */ 472 bufq_drain(sc->sc_q); 473 474 bufq_free(sc->sc_q); 475 sc->atabus->ata_killpending(sc->drvp); 476 477 splx(s); 478 479 /* Detach disk. */ 480 disk_detach(&sc->sc_dk); 481 482 #ifdef WD_SOFTBADSECT 483 /* Clean out the bad sector list */ 484 while (!SLIST_EMPTY(&sc->sc_bslist)) { 485 void *head = SLIST_FIRST(&sc->sc_bslist); 486 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 487 free(head, M_TEMP); 488 } 489 sc->sc_bscount = 0; 490 #endif 491 492 /* Get rid of the shutdown hook. */ 493 if (sc->sc_sdhook != NULL) 494 shutdownhook_disestablish(sc->sc_sdhook); 495 496 #if NRND > 0 497 /* Unhook the entropy source. */ 498 rnd_detach_source(&sc->rnd_source); 499 #endif 500 501 sc->drvp->drive_flags = 0; /* no drive any more here */ 502 503 return (0); 504 } 505 506 /* 507 * Read/write routine for a buffer. Validates the arguments and schedules the 508 * transfer. Does not wait for the transfer to complete. 509 */ 510 void 511 wdstrategy(struct buf *bp) 512 { 513 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 514 struct disklabel *lp = wd->sc_dk.dk_label; 515 daddr_t blkno; 516 int s; 517 518 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 519 DEBUG_XFERS); 520 521 /* Valid request? */ 522 if (bp->b_blkno < 0 || 523 (bp->b_bcount % lp->d_secsize) != 0 || 524 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 525 bp->b_error = EINVAL; 526 goto done; 527 } 528 529 /* If device invalidated (e.g. media change, door open), error. */ 530 if ((wd->sc_flags & WDF_LOADED) == 0) { 531 bp->b_error = EIO; 532 goto done; 533 } 534 535 /* If it's a null transfer, return immediately. */ 536 if (bp->b_bcount == 0) 537 goto done; 538 539 /* 540 * Do bounds checking, adjust transfer. if error, process. 541 * If end of partition, just return. 542 */ 543 if (WDPART(bp->b_dev) == RAW_PART) { 544 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 545 wd->sc_capacity) <= 0) 546 goto done; 547 } else { 548 if (bounds_check_with_label(&wd->sc_dk, bp, 549 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 550 goto done; 551 } 552 553 /* 554 * Now convert the block number to absolute and put it in 555 * terms of the device's logical block size. 556 */ 557 if (lp->d_secsize >= DEV_BSIZE) 558 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 559 else 560 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 561 562 if (WDPART(bp->b_dev) != RAW_PART) 563 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 564 565 bp->b_rawblkno = blkno; 566 567 #ifdef WD_SOFTBADSECT 568 /* 569 * If the transfer about to be attempted contains only a block that 570 * is known to be bad then return an error for the transfer without 571 * even attempting to start a transfer up under the premis that we 572 * will just end up doing more retries for a transfer that will end 573 * up failing again. 574 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 575 */ 576 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 577 struct disk_badsectors *dbs; 578 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 579 580 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 581 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 582 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 583 bp->b_error = EIO; 584 goto done; 585 } 586 } 587 #endif 588 589 /* Queue transfer on drive, activate drive and controller if idle. */ 590 s = splbio(); 591 BUFQ_PUT(wd->sc_q, bp); 592 wdstart(wd); 593 splx(s); 594 return; 595 done: 596 /* Toss transfer; we're done early. */ 597 bp->b_resid = bp->b_bcount; 598 biodone(bp); 599 } 600 601 /* 602 * Queue a drive for I/O. 603 */ 604 void 605 wdstart(void *arg) 606 { 607 struct wd_softc *wd = arg; 608 struct buf *bp = NULL; 609 610 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 611 DEBUG_XFERS); 612 while (wd->openings > 0) { 613 614 /* Is there a buf for us ? */ 615 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 616 return; 617 618 /* 619 * Make the command. First lock the device 620 */ 621 wd->openings--; 622 623 wd->retries = 0; 624 __wdstart(wd, bp); 625 } 626 } 627 628 static void 629 wd_split_mod15_write(struct buf *bp) 630 { 631 struct buf *obp = bp->b_private; 632 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 633 634 if (__predict_false(bp->b_error != 0)) { 635 /* 636 * Propagate the error. If this was the first half of 637 * the original transfer, make sure to account for that 638 * in the residual. 639 */ 640 if (bp->b_data == obp->b_data) 641 bp->b_resid += bp->b_bcount; 642 goto done; 643 } 644 645 /* 646 * If this was the second half of the transfer, we're all done! 647 */ 648 if (bp->b_data != obp->b_data) 649 goto done; 650 651 /* 652 * Advance the pointer to the second half and issue that command 653 * using the same opening. 654 */ 655 bp->b_flags = obp->b_flags; 656 bp->b_oflags = obp->b_oflags; 657 bp->b_cflags = obp->b_cflags; 658 bp->b_data = (char *)bp->b_data + bp->b_bcount; 659 bp->b_blkno += (bp->b_bcount / 512); 660 bp->b_rawblkno += (bp->b_bcount / 512); 661 __wdstart(sc, bp); 662 return; 663 664 done: 665 obp->b_error = bp->b_error; 666 obp->b_resid = bp->b_resid; 667 putiobuf(bp); 668 biodone(obp); 669 sc->openings++; 670 /* wddone() will call wdstart() */ 671 } 672 673 void 674 __wdstart(struct wd_softc *wd, struct buf *bp) 675 { 676 677 /* 678 * Deal with the "split mod15 write" quirk. We just divide the 679 * transfer in two, doing the first half and then then second half 680 * with the same command opening. 681 * 682 * Note we MUST do this here, because we can't let insertion 683 * into the bufq cause the transfers to be re-merged. 684 */ 685 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 686 (bp->b_flags & B_READ) == 0 && 687 bp->b_bcount > 512 && 688 ((bp->b_bcount / 512) % 15) == 1)) { 689 struct buf *nbp; 690 691 /* already at splbio */ 692 nbp = getiobuf(NULL, false); 693 if (__predict_false(nbp == NULL)) { 694 /* No memory -- fail the iop. */ 695 bp->b_error = ENOMEM; 696 bp->b_resid = bp->b_bcount; 697 biodone(bp); 698 wd->openings++; 699 return; 700 } 701 702 nbp->b_error = 0; 703 nbp->b_proc = bp->b_proc; 704 nbp->b_dev = bp->b_dev; 705 706 nbp->b_bcount = bp->b_bcount / 2; 707 nbp->b_bufsize = bp->b_bcount / 2; 708 nbp->b_data = bp->b_data; 709 710 nbp->b_blkno = bp->b_blkno; 711 nbp->b_rawblkno = bp->b_rawblkno; 712 713 nbp->b_flags = bp->b_flags; 714 nbp->b_oflags = bp->b_oflags; 715 nbp->b_cflags = bp->b_cflags; 716 nbp->b_iodone = wd_split_mod15_write; 717 718 /* Put ptr to orig buf in b_private and use new buf */ 719 nbp->b_private = bp; 720 721 BIO_COPYPRIO(nbp, bp); 722 723 bp = nbp; 724 } 725 726 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 727 wd->sc_wdc_bio.blkdone =0; 728 wd->sc_bp = bp; 729 /* 730 * If we're retrying, retry in single-sector mode. This will give us 731 * the sector number of the problem, and will eventually allow the 732 * transfer to succeed. 733 */ 734 if (wd->retries >= WDIORETRIES_SINGLE) 735 wd->sc_wdc_bio.flags = ATA_SINGLE; 736 else 737 wd->sc_wdc_bio.flags = 0; 738 if (wd->sc_flags & WDF_LBA48 && 739 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 740 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 741 wd->sc_wdc_bio.flags |= ATA_LBA48; 742 if (wd->sc_flags & WDF_LBA) 743 wd->sc_wdc_bio.flags |= ATA_LBA; 744 if (bp->b_flags & B_READ) 745 wd->sc_wdc_bio.flags |= ATA_READ; 746 wd->sc_wdc_bio.bcount = bp->b_bcount; 747 wd->sc_wdc_bio.databuf = bp->b_data; 748 /* Instrumentation. */ 749 disk_busy(&wd->sc_dk); 750 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 751 case ATACMD_TRY_AGAIN: 752 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 753 break; 754 case ATACMD_QUEUED: 755 case ATACMD_COMPLETE: 756 break; 757 default: 758 panic("__wdstart: bad return code from ata_bio()"); 759 } 760 } 761 762 void 763 wddone(void *v) 764 { 765 struct wd_softc *wd = v; 766 struct buf *bp = wd->sc_bp; 767 const char *errmsg; 768 int do_perror = 0; 769 int nblks; 770 771 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 772 DEBUG_XFERS); 773 if (bp == NULL) 774 return; 775 bp->b_resid = wd->sc_wdc_bio.bcount; 776 switch (wd->sc_wdc_bio.error) { 777 case ERR_DMA: 778 errmsg = "DMA error"; 779 goto retry; 780 case ERR_DF: 781 errmsg = "device fault"; 782 goto retry; 783 case TIMEOUT: 784 errmsg = "device timeout"; 785 goto retry; 786 case ERR_RESET: 787 errmsg = "channel reset"; 788 goto retry2; 789 case ERROR: 790 /* Don't care about media change bits */ 791 if (wd->sc_wdc_bio.r_error != 0 && 792 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 793 goto noerror; 794 errmsg = "error"; 795 do_perror = 1; 796 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 797 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 798 nblks = wd->sc_wdc_bio.bcount / 799 wd->sc_dk.dk_label->d_secsize; 800 /* 801 * If we get a "id not found" when crossing the 802 * LBA48_THRESHOLD, and the drive is larger than 803 * 128GB, then we can assume the drive has the 804 * LBA48 bug and we switch to LBA48. 805 */ 806 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 807 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 808 wd->sc_capacity > LBA48_THRESHOLD + 1) { 809 errmsg = "LBA48 bug"; 810 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 811 do_perror = 0; 812 goto retry2; 813 } 814 } 815 retry: /* Just reset and retry. Can we do more ? */ 816 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 817 retry2: 818 diskerr(bp, "wd", errmsg, LOG_PRINTF, 819 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 820 if (wd->retries < WDIORETRIES) 821 printf(", retrying"); 822 printf("\n"); 823 if (do_perror) 824 wdperror(wd); 825 if (wd->retries < WDIORETRIES) { 826 wd->retries++; 827 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 828 wdrestart, wd); 829 return; 830 } 831 832 #ifdef WD_SOFTBADSECT 833 /* 834 * Not all errors indicate a failed block but those that do, 835 * put the block on the bad-block list for the device. Only 836 * do this for reads because the drive should do it for writes, 837 * itself, according to Manuel. 838 */ 839 if ((bp->b_flags & B_READ) && 840 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 841 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 842 struct disk_badsectors *dbs; 843 844 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 845 dbs->dbs_min = bp->b_rawblkno; 846 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 847 microtime(&dbs->dbs_failedat); 848 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 849 wd->sc_bscount++; 850 } 851 #endif 852 bp->b_error = EIO; 853 break; 854 case NOERROR: 855 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 856 printf("%s: soft error (corrected)\n", 857 wd->sc_dev.dv_xname); 858 break; 859 case ERR_NODEV: 860 bp->b_error = EIO; 861 break; 862 } 863 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 864 (bp->b_flags & B_READ)); 865 #if NRND > 0 866 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 867 #endif 868 /* XXX Yuck, but we don't want to increment openings in this case */ 869 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 870 biodone(bp); 871 else { 872 biodone(bp); 873 wd->openings++; 874 } 875 wdstart(wd); 876 } 877 878 void 879 wdrestart(void *v) 880 { 881 struct wd_softc *wd = v; 882 struct buf *bp = wd->sc_bp; 883 int s; 884 885 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 886 DEBUG_XFERS); 887 s = splbio(); 888 __wdstart(v, bp); 889 splx(s); 890 } 891 892 int 893 wdread(dev_t dev, struct uio *uio, int flags) 894 { 895 896 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 897 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 898 } 899 900 int 901 wdwrite(dev_t dev, struct uio *uio, int flags) 902 { 903 904 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 905 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 906 } 907 908 int 909 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 910 { 911 struct wd_softc *wd; 912 int part, error; 913 914 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 915 wd = device_lookup(&wd_cd, WDUNIT(dev)); 916 if (wd == NULL) 917 return (ENXIO); 918 919 if (! device_is_active(&wd->sc_dev)) 920 return (ENODEV); 921 922 part = WDPART(dev); 923 924 mutex_enter(&wd->sc_dk.dk_openlock); 925 926 /* 927 * If there are wedges, and this is not RAW_PART, then we 928 * need to fail. 929 */ 930 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 931 error = EBUSY; 932 goto bad1; 933 } 934 935 /* 936 * If this is the first open of this device, add a reference 937 * to the adapter. 938 */ 939 if (wd->sc_dk.dk_openmask == 0 && 940 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 941 goto bad1; 942 943 if (wd->sc_dk.dk_openmask != 0) { 944 /* 945 * If any partition is open, but the disk has been invalidated, 946 * disallow further opens. 947 */ 948 if ((wd->sc_flags & WDF_LOADED) == 0) { 949 error = EIO; 950 goto bad2; 951 } 952 } else { 953 if ((wd->sc_flags & WDF_LOADED) == 0) { 954 wd->sc_flags |= WDF_LOADED; 955 956 /* Load the physical device parameters. */ 957 wd_get_params(wd, AT_WAIT, &wd->sc_params); 958 959 /* Load the partition info if not already loaded. */ 960 wdgetdisklabel(wd); 961 } 962 } 963 964 /* Check that the partition exists. */ 965 if (part != RAW_PART && 966 (part >= wd->sc_dk.dk_label->d_npartitions || 967 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 968 error = ENXIO; 969 goto bad2; 970 } 971 972 /* Insure only one open at a time. */ 973 switch (fmt) { 974 case S_IFCHR: 975 wd->sc_dk.dk_copenmask |= (1 << part); 976 break; 977 case S_IFBLK: 978 wd->sc_dk.dk_bopenmask |= (1 << part); 979 break; 980 } 981 wd->sc_dk.dk_openmask = 982 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 983 984 mutex_exit(&wd->sc_dk.dk_openlock); 985 return 0; 986 987 bad2: 988 if (wd->sc_dk.dk_openmask == 0) 989 wd->atabus->ata_delref(wd->drvp); 990 bad1: 991 mutex_exit(&wd->sc_dk.dk_openlock); 992 return error; 993 } 994 995 int 996 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 997 { 998 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 999 int part = WDPART(dev); 1000 1001 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1002 1003 mutex_enter(&wd->sc_dk.dk_openlock); 1004 1005 switch (fmt) { 1006 case S_IFCHR: 1007 wd->sc_dk.dk_copenmask &= ~(1 << part); 1008 break; 1009 case S_IFBLK: 1010 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1011 break; 1012 } 1013 wd->sc_dk.dk_openmask = 1014 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1015 1016 if (wd->sc_dk.dk_openmask == 0) { 1017 wd_flushcache(wd, AT_WAIT); 1018 1019 if (! (wd->sc_flags & WDF_KLABEL)) 1020 wd->sc_flags &= ~WDF_LOADED; 1021 1022 wd->atabus->ata_delref(wd->drvp); 1023 } 1024 1025 mutex_exit(&wd->sc_dk.dk_openlock); 1026 return 0; 1027 } 1028 1029 void 1030 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1031 { 1032 1033 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1034 memset(lp, 0, sizeof(struct disklabel)); 1035 1036 lp->d_secsize = DEV_BSIZE; 1037 lp->d_ntracks = wd->sc_params.atap_heads; 1038 lp->d_nsectors = wd->sc_params.atap_sectors; 1039 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1040 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1041 wd->sc_params.atap_cylinders; 1042 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1043 1044 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1045 lp->d_type = DTYPE_ST506; 1046 else 1047 lp->d_type = DTYPE_ESDI; 1048 1049 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1050 strncpy(lp->d_packname, "fictitious", 16); 1051 if (wd->sc_capacity > UINT32_MAX) 1052 lp->d_secperunit = UINT32_MAX; 1053 else 1054 lp->d_secperunit = wd->sc_capacity; 1055 lp->d_rpm = 3600; 1056 lp->d_interleave = 1; 1057 lp->d_flags = 0; 1058 1059 lp->d_partitions[RAW_PART].p_offset = 0; 1060 lp->d_partitions[RAW_PART].p_size = 1061 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1062 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1063 lp->d_npartitions = RAW_PART + 1; 1064 1065 lp->d_magic = DISKMAGIC; 1066 lp->d_magic2 = DISKMAGIC; 1067 lp->d_checksum = dkcksum(lp); 1068 } 1069 1070 /* 1071 * Fabricate a default disk label, and try to read the correct one. 1072 */ 1073 void 1074 wdgetdisklabel(struct wd_softc *wd) 1075 { 1076 struct disklabel *lp = wd->sc_dk.dk_label; 1077 const char *errstring; 1078 int s; 1079 1080 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1081 1082 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1083 1084 wdgetdefaultlabel(wd, lp); 1085 1086 wd->sc_badsect[0] = -1; 1087 1088 if (wd->drvp->state > RESET) { 1089 s = splbio(); 1090 wd->drvp->drive_flags |= DRIVE_RESET; 1091 splx(s); 1092 } 1093 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1094 RAW_PART), wdstrategy, lp, 1095 wd->sc_dk.dk_cpulabel); 1096 if (errstring) { 1097 /* 1098 * This probably happened because the drive's default 1099 * geometry doesn't match the DOS geometry. We 1100 * assume the DOS geometry is now in the label and try 1101 * again. XXX This is a kluge. 1102 */ 1103 if (wd->drvp->state > RESET) { 1104 s = splbio(); 1105 wd->drvp->drive_flags |= DRIVE_RESET; 1106 splx(s); 1107 } 1108 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1109 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1110 } 1111 if (errstring) { 1112 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1113 return; 1114 } 1115 1116 if (wd->drvp->state > RESET) { 1117 s = splbio(); 1118 wd->drvp->drive_flags |= DRIVE_RESET; 1119 splx(s); 1120 } 1121 #ifdef HAS_BAD144_HANDLING 1122 if ((lp->d_flags & D_BADSECT) != 0) 1123 bad144intern(wd); 1124 #endif 1125 } 1126 1127 void 1128 wdperror(const struct wd_softc *wd) 1129 { 1130 static const char *const errstr0_3[] = {"address mark not found", 1131 "track 0 not found", "aborted command", "media change requested", 1132 "id not found", "media changed", "uncorrectable data error", 1133 "bad block detected"}; 1134 static const char *const errstr4_5[] = { 1135 "obsolete (address mark not found)", 1136 "no media/write protected", "aborted command", 1137 "media change requested", "id not found", "media changed", 1138 "uncorrectable data error", "interface CRC error"}; 1139 const char *const *errstr; 1140 int i; 1141 const char *sep = ""; 1142 1143 const char *devname = wd->sc_dev.dv_xname; 1144 struct ata_drive_datas *drvp = wd->drvp; 1145 int errno = wd->sc_wdc_bio.r_error; 1146 1147 if (drvp->ata_vers >= 4) 1148 errstr = errstr4_5; 1149 else 1150 errstr = errstr0_3; 1151 1152 printf("%s: (", devname); 1153 1154 if (errno == 0) 1155 printf("error not notified"); 1156 1157 for (i = 0; i < 8; i++) { 1158 if (errno & (1 << i)) { 1159 printf("%s%s", sep, errstr[i]); 1160 sep = ", "; 1161 } 1162 } 1163 printf(")\n"); 1164 } 1165 1166 int 1167 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1168 { 1169 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1170 int error = 0, s; 1171 #ifdef __HAVE_OLD_DISKLABEL 1172 struct disklabel *newlabel = NULL; 1173 #endif 1174 1175 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1176 1177 if ((wd->sc_flags & WDF_LOADED) == 0) 1178 return EIO; 1179 1180 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1181 if (error != EPASSTHROUGH) 1182 return (error); 1183 1184 switch (xfer) { 1185 #ifdef HAS_BAD144_HANDLING 1186 case DIOCSBAD: 1187 if ((flag & FWRITE) == 0) 1188 return EBADF; 1189 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1190 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1191 bad144intern(wd); 1192 return 0; 1193 #endif 1194 #ifdef WD_SOFTBADSECT 1195 case DIOCBSLIST : 1196 { 1197 u_int32_t count, missing, skip; 1198 struct disk_badsecinfo dbsi; 1199 struct disk_badsectors *dbs; 1200 size_t available; 1201 uint8_t *laddr; 1202 1203 dbsi = *(struct disk_badsecinfo *)addr; 1204 missing = wd->sc_bscount; 1205 count = 0; 1206 available = dbsi.dbsi_bufsize; 1207 skip = dbsi.dbsi_skip; 1208 laddr = (uint8_t *)dbsi.dbsi_buffer; 1209 1210 /* 1211 * We start this loop with the expectation that all of the 1212 * entries will be missed and decrement this counter each 1213 * time we either skip over one (already copied out) or 1214 * we actually copy it back to user space. The structs 1215 * holding the bad sector information are copied directly 1216 * back to user space whilst the summary is returned via 1217 * the struct passed in via the ioctl. 1218 */ 1219 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1220 if (skip > 0) { 1221 missing--; 1222 skip--; 1223 continue; 1224 } 1225 if (available < sizeof(*dbs)) 1226 break; 1227 available -= sizeof(*dbs); 1228 copyout(dbs, laddr, sizeof(*dbs)); 1229 laddr += sizeof(*dbs); 1230 missing--; 1231 count++; 1232 } 1233 dbsi.dbsi_left = missing; 1234 dbsi.dbsi_copied = count; 1235 *(struct disk_badsecinfo *)addr = dbsi; 1236 return 0; 1237 } 1238 1239 case DIOCBSFLUSH : 1240 /* Clean out the bad sector list */ 1241 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1242 void *head = SLIST_FIRST(&wd->sc_bslist); 1243 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1244 free(head, M_TEMP); 1245 } 1246 wd->sc_bscount = 0; 1247 return 0; 1248 #endif 1249 case DIOCGDINFO: 1250 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1251 return 0; 1252 #ifdef __HAVE_OLD_DISKLABEL 1253 case ODIOCGDINFO: 1254 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1255 if (newlabel == NULL) 1256 return EIO; 1257 *newlabel = *(wd->sc_dk.dk_label); 1258 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1259 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1260 else 1261 error = ENOTTY; 1262 free(newlabel, M_TEMP); 1263 return error; 1264 #endif 1265 1266 case DIOCGPART: 1267 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1268 ((struct partinfo *)addr)->part = 1269 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1270 return 0; 1271 1272 case DIOCWDINFO: 1273 case DIOCSDINFO: 1274 #ifdef __HAVE_OLD_DISKLABEL 1275 case ODIOCWDINFO: 1276 case ODIOCSDINFO: 1277 #endif 1278 { 1279 struct disklabel *lp; 1280 1281 if ((flag & FWRITE) == 0) 1282 return EBADF; 1283 1284 #ifdef __HAVE_OLD_DISKLABEL 1285 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1286 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1287 if (newlabel == NULL) 1288 return EIO; 1289 memset(newlabel, 0, sizeof newlabel); 1290 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1291 lp = newlabel; 1292 } else 1293 #endif 1294 lp = (struct disklabel *)addr; 1295 1296 mutex_enter(&wd->sc_dk.dk_openlock); 1297 wd->sc_flags |= WDF_LABELLING; 1298 1299 error = setdisklabel(wd->sc_dk.dk_label, 1300 lp, /*wd->sc_dk.dk_openmask : */0, 1301 wd->sc_dk.dk_cpulabel); 1302 if (error == 0) { 1303 if (wd->drvp->state > RESET) { 1304 s = splbio(); 1305 wd->drvp->drive_flags |= DRIVE_RESET; 1306 splx(s); 1307 } 1308 if (xfer == DIOCWDINFO 1309 #ifdef __HAVE_OLD_DISKLABEL 1310 || xfer == ODIOCWDINFO 1311 #endif 1312 ) 1313 error = writedisklabel(WDLABELDEV(dev), 1314 wdstrategy, wd->sc_dk.dk_label, 1315 wd->sc_dk.dk_cpulabel); 1316 } 1317 1318 wd->sc_flags &= ~WDF_LABELLING; 1319 mutex_exit(&wd->sc_dk.dk_openlock); 1320 #ifdef __HAVE_OLD_DISKLABEL 1321 if (newlabel != NULL) 1322 free(newlabel, M_TEMP); 1323 #endif 1324 return error; 1325 } 1326 1327 case DIOCKLABEL: 1328 if (*(int *)addr) 1329 wd->sc_flags |= WDF_KLABEL; 1330 else 1331 wd->sc_flags &= ~WDF_KLABEL; 1332 return 0; 1333 1334 case DIOCWLABEL: 1335 if ((flag & FWRITE) == 0) 1336 return EBADF; 1337 if (*(int *)addr) 1338 wd->sc_flags |= WDF_WLABEL; 1339 else 1340 wd->sc_flags &= ~WDF_WLABEL; 1341 return 0; 1342 1343 case DIOCGDEFLABEL: 1344 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1345 return 0; 1346 #ifdef __HAVE_OLD_DISKLABEL 1347 case ODIOCGDEFLABEL: 1348 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1349 if (newlabel == NULL) 1350 return EIO; 1351 wdgetdefaultlabel(wd, newlabel); 1352 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1353 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1354 else 1355 error = ENOTTY; 1356 free(newlabel, M_TEMP); 1357 return error; 1358 #endif 1359 1360 #ifdef notyet 1361 case DIOCWFORMAT: 1362 if ((flag & FWRITE) == 0) 1363 return EBADF; 1364 { 1365 register struct format_op *fop; 1366 struct iovec aiov; 1367 struct uio auio; 1368 1369 fop = (struct format_op *)addr; 1370 aiov.iov_base = fop->df_buf; 1371 aiov.iov_len = fop->df_count; 1372 auio.uio_iov = &aiov; 1373 auio.uio_iovcnt = 1; 1374 auio.uio_resid = fop->df_count; 1375 auio.uio_offset = 1376 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1377 auio.uio_vmspace = l->l_proc->p_vmspace; 1378 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1379 &auio); 1380 fop->df_count -= auio.uio_resid; 1381 fop->df_reg[0] = wdc->sc_status; 1382 fop->df_reg[1] = wdc->sc_error; 1383 return error; 1384 } 1385 #endif 1386 case DIOCGCACHE: 1387 return wd_getcache(wd, (int *)addr); 1388 1389 case DIOCSCACHE: 1390 return wd_setcache(wd, *(int *)addr); 1391 1392 case DIOCCACHESYNC: 1393 return wd_flushcache(wd, AT_WAIT); 1394 1395 case ATAIOCCOMMAND: 1396 /* 1397 * Make sure this command is (relatively) safe first 1398 */ 1399 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1400 (flag & FWRITE) == 0) 1401 return (EBADF); 1402 { 1403 struct wd_ioctl *wi; 1404 atareq_t *atareq = (atareq_t *) addr; 1405 int error1; 1406 1407 wi = wi_get(); 1408 wi->wi_softc = wd; 1409 wi->wi_atareq = *atareq; 1410 1411 if (atareq->datalen && atareq->flags & 1412 (ATACMD_READ | ATACMD_WRITE)) { 1413 void *tbuf; 1414 if (atareq->datalen < DEV_BSIZE 1415 && atareq->command == WDCC_IDENTIFY) { 1416 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1417 wi->wi_iov.iov_base = tbuf; 1418 wi->wi_iov.iov_len = DEV_BSIZE; 1419 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1420 } else { 1421 tbuf = NULL; 1422 wi->wi_iov.iov_base = atareq->databuf; 1423 wi->wi_iov.iov_len = atareq->datalen; 1424 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1425 } 1426 wi->wi_uio.uio_iov = &wi->wi_iov; 1427 wi->wi_uio.uio_iovcnt = 1; 1428 wi->wi_uio.uio_resid = atareq->datalen; 1429 wi->wi_uio.uio_offset = 0; 1430 wi->wi_uio.uio_rw = 1431 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1432 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1433 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1434 minphys, &wi->wi_uio); 1435 if (tbuf != NULL && error1 == 0) { 1436 error1 = copyout(tbuf, atareq->databuf, 1437 atareq->datalen); 1438 free(tbuf, M_TEMP); 1439 } 1440 } else { 1441 /* No need to call physio if we don't have any 1442 user data */ 1443 wi->wi_bp.b_flags = 0; 1444 wi->wi_bp.b_data = 0; 1445 wi->wi_bp.b_bcount = 0; 1446 wi->wi_bp.b_dev = 0; 1447 wi->wi_bp.b_proc = l->l_proc; 1448 wdioctlstrategy(&wi->wi_bp); 1449 error1 = wi->wi_bp.b_error; 1450 } 1451 *atareq = wi->wi_atareq; 1452 wi_free(wi); 1453 return(error1); 1454 } 1455 1456 case DIOCAWEDGE: 1457 { 1458 struct dkwedge_info *dkw = (void *) addr; 1459 1460 if ((flag & FWRITE) == 0) 1461 return (EBADF); 1462 1463 /* If the ioctl happens here, the parent is us. */ 1464 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1465 return (dkwedge_add(dkw)); 1466 } 1467 1468 case DIOCDWEDGE: 1469 { 1470 struct dkwedge_info *dkw = (void *) addr; 1471 1472 if ((flag & FWRITE) == 0) 1473 return (EBADF); 1474 1475 /* If the ioctl happens here, the parent is us. */ 1476 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1477 return (dkwedge_del(dkw)); 1478 } 1479 1480 case DIOCLWEDGES: 1481 { 1482 struct dkwedge_list *dkwl = (void *) addr; 1483 1484 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1485 } 1486 1487 case DIOCGSTRATEGY: 1488 { 1489 struct disk_strategy *dks = (void *)addr; 1490 1491 s = splbio(); 1492 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1493 sizeof(dks->dks_name)); 1494 splx(s); 1495 dks->dks_paramlen = 0; 1496 1497 return 0; 1498 } 1499 1500 case DIOCSSTRATEGY: 1501 { 1502 struct disk_strategy *dks = (void *)addr; 1503 struct bufq_state *new; 1504 struct bufq_state *old; 1505 1506 if ((flag & FWRITE) == 0) { 1507 return EBADF; 1508 } 1509 if (dks->dks_param != NULL) { 1510 return EINVAL; 1511 } 1512 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1513 error = bufq_alloc(&new, dks->dks_name, 1514 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1515 if (error) { 1516 return error; 1517 } 1518 s = splbio(); 1519 old = wd->sc_q; 1520 bufq_move(new, old); 1521 wd->sc_q = new; 1522 splx(s); 1523 bufq_free(old); 1524 1525 return 0; 1526 } 1527 1528 default: 1529 return ENOTTY; 1530 } 1531 1532 #ifdef DIAGNOSTIC 1533 panic("wdioctl: impossible"); 1534 #endif 1535 } 1536 1537 #ifdef B_FORMAT 1538 int 1539 wdformat(struct buf *bp) 1540 { 1541 1542 bp->b_flags |= B_FORMAT; 1543 return wdstrategy(bp); 1544 } 1545 #endif 1546 1547 int 1548 wdsize(dev_t dev) 1549 { 1550 struct wd_softc *wd; 1551 int part, omask; 1552 int size; 1553 1554 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1555 1556 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1557 if (wd == NULL) 1558 return (-1); 1559 1560 part = WDPART(dev); 1561 omask = wd->sc_dk.dk_openmask & (1 << part); 1562 1563 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1564 return (-1); 1565 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1566 size = -1; 1567 else 1568 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1569 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1570 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1571 return (-1); 1572 return (size); 1573 } 1574 1575 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1576 static int wddoingadump = 0; 1577 static int wddumprecalibrated = 0; 1578 1579 /* 1580 * Dump core after a system crash. 1581 */ 1582 int 1583 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1584 { 1585 struct wd_softc *wd; /* disk unit to do the I/O */ 1586 struct disklabel *lp; /* disk's disklabel */ 1587 int part, err; 1588 int nblks; /* total number of sectors left to write */ 1589 1590 /* Check if recursive dump; if so, punt. */ 1591 if (wddoingadump) 1592 return EFAULT; 1593 wddoingadump = 1; 1594 1595 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1596 if (wd == NULL) 1597 return (ENXIO); 1598 1599 part = WDPART(dev); 1600 1601 /* Convert to disk sectors. Request must be a multiple of size. */ 1602 lp = wd->sc_dk.dk_label; 1603 if ((size % lp->d_secsize) != 0) 1604 return EFAULT; 1605 nblks = size / lp->d_secsize; 1606 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1607 1608 /* Check transfer bounds against partition size. */ 1609 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1610 return EINVAL; 1611 1612 /* Offset block number to start of partition. */ 1613 blkno += lp->d_partitions[part].p_offset; 1614 1615 /* Recalibrate, if first dump transfer. */ 1616 if (wddumprecalibrated == 0) { 1617 wddumprecalibrated = 1; 1618 (*wd->atabus->ata_reset_drive)(wd->drvp, 1619 AT_POLL | AT_RST_EMERG); 1620 wd->drvp->state = RESET; 1621 } 1622 1623 wd->sc_bp = NULL; 1624 wd->sc_wdc_bio.blkno = blkno; 1625 wd->sc_wdc_bio.flags = ATA_POLL; 1626 if (wd->sc_flags & WDF_LBA48 && 1627 (blkno > LBA48_THRESHOLD || 1628 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1629 wd->sc_wdc_bio.flags |= ATA_LBA48; 1630 if (wd->sc_flags & WDF_LBA) 1631 wd->sc_wdc_bio.flags |= ATA_LBA; 1632 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1633 wd->sc_wdc_bio.databuf = va; 1634 #ifndef WD_DUMP_NOT_TRUSTED 1635 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1636 case ATACMD_TRY_AGAIN: 1637 panic("wddump: try again"); 1638 break; 1639 case ATACMD_QUEUED: 1640 panic("wddump: polled command has been queued"); 1641 break; 1642 case ATACMD_COMPLETE: 1643 break; 1644 } 1645 switch(wd->sc_wdc_bio.error) { 1646 case TIMEOUT: 1647 printf("wddump: device timed out"); 1648 err = EIO; 1649 break; 1650 case ERR_DF: 1651 printf("wddump: drive fault"); 1652 err = EIO; 1653 break; 1654 case ERR_DMA: 1655 printf("wddump: DMA error"); 1656 err = EIO; 1657 break; 1658 case ERROR: 1659 printf("wddump: "); 1660 wdperror(wd); 1661 err = EIO; 1662 break; 1663 case NOERROR: 1664 err = 0; 1665 break; 1666 default: 1667 panic("wddump: unknown error type"); 1668 } 1669 if (err != 0) { 1670 printf("\n"); 1671 return err; 1672 } 1673 #else /* WD_DUMP_NOT_TRUSTED */ 1674 /* Let's just talk about this first... */ 1675 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1676 unit, va, cylin, head, sector); 1677 delay(500 * 1000); /* half a second */ 1678 #endif 1679 1680 wddoingadump = 0; 1681 return 0; 1682 } 1683 1684 #ifdef HAS_BAD144_HANDLING 1685 /* 1686 * Internalize the bad sector table. 1687 */ 1688 void 1689 bad144intern(struct wd_softc *wd) 1690 { 1691 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1692 struct disklabel *lp = wd->sc_dk.dk_label; 1693 int i = 0; 1694 1695 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1696 1697 for (; i < NBT_BAD; i++) { 1698 if (bt->bt_bad[i].bt_cyl == 0xffff) 1699 break; 1700 wd->sc_badsect[i] = 1701 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1702 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1703 (bt->bt_bad[i].bt_trksec & 0xff); 1704 } 1705 for (; i < NBT_BAD+1; i++) 1706 wd->sc_badsect[i] = -1; 1707 } 1708 #endif 1709 1710 static void 1711 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1712 { 1713 prop_dictionary_t disk_info, odisk_info, geom; 1714 const char *cp; 1715 1716 disk_info = prop_dictionary_create(); 1717 1718 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1719 cp = "ST506"; 1720 else { 1721 /* XXX Should have a case for ATA here, too. */ 1722 cp = "ESDI"; 1723 } 1724 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1725 1726 geom = prop_dictionary_create(); 1727 1728 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1729 1730 prop_dictionary_set_uint32(geom, "sector-size", 1731 DEV_BSIZE /* XXX 512? */); 1732 1733 prop_dictionary_set_uint16(geom, "sectors-per-track", 1734 wd->sc_params.atap_sectors); 1735 1736 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1737 wd->sc_params.atap_heads); 1738 1739 if (wd->sc_flags & WDF_LBA) 1740 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1741 wd->sc_capacity / 1742 (wd->sc_params.atap_heads * 1743 wd->sc_params.atap_sectors)); 1744 else 1745 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1746 wd->sc_params.atap_cylinders); 1747 1748 prop_dictionary_set(disk_info, "geometry", geom); 1749 prop_object_release(geom); 1750 1751 prop_dictionary_set(device_properties(&wd->sc_dev), 1752 "disk-info", disk_info); 1753 1754 /* 1755 * Don't release disk_info here; we keep a reference to it. 1756 * disk_detach() will release it when we go away. 1757 */ 1758 1759 odisk_info = wd->sc_dk.dk_info; 1760 wd->sc_dk.dk_info = disk_info; 1761 if (odisk_info) 1762 prop_object_release(odisk_info); 1763 } 1764 1765 int 1766 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1767 { 1768 1769 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1770 case CMD_AGAIN: 1771 return 1; 1772 case CMD_ERR: 1773 /* 1774 * We `know' there's a drive here; just assume it's old. 1775 * This geometry is only used to read the MBR and print a 1776 * (false) attach message. 1777 */ 1778 strncpy(params->atap_model, "ST506", 1779 sizeof params->atap_model); 1780 params->atap_config = ATA_CFG_FIXED; 1781 params->atap_cylinders = 1024; 1782 params->atap_heads = 8; 1783 params->atap_sectors = 17; 1784 params->atap_multi = 1; 1785 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1786 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1787 /* FALLTHROUGH */ 1788 case CMD_OK: 1789 wd_params_to_properties(wd, params); 1790 return 0; 1791 default: 1792 panic("wd_get_params: bad return code from ata_get_params"); 1793 /* NOTREACHED */ 1794 } 1795 } 1796 1797 int 1798 wd_getcache(struct wd_softc *wd, int *bitsp) 1799 { 1800 struct ataparams params; 1801 1802 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1803 return EIO; 1804 if (params.atap_cmd_set1 == 0x0000 || 1805 params.atap_cmd_set1 == 0xffff || 1806 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1807 *bitsp = 0; 1808 return 0; 1809 } 1810 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1811 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1812 *bitsp |= DKCACHE_WRITE; 1813 1814 return 0; 1815 } 1816 1817 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1818 1819 int 1820 wd_setcache(struct wd_softc *wd, int bits) 1821 { 1822 struct ataparams params; 1823 struct ata_command ata_c; 1824 1825 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1826 return EIO; 1827 1828 if (params.atap_cmd_set1 == 0x0000 || 1829 params.atap_cmd_set1 == 0xffff || 1830 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1831 return EOPNOTSUPP; 1832 1833 if ((bits & DKCACHE_READ) == 0 || 1834 (bits & DKCACHE_SAVE) != 0) 1835 return EOPNOTSUPP; 1836 1837 memset(&ata_c, 0, sizeof(struct ata_command)); 1838 ata_c.r_command = SET_FEATURES; 1839 ata_c.r_st_bmask = 0; 1840 ata_c.r_st_pmask = 0; 1841 ata_c.timeout = 30000; /* 30s timeout */ 1842 ata_c.flags = AT_WAIT; 1843 if (bits & DKCACHE_WRITE) 1844 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1845 else 1846 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1847 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1848 printf("%s: wd_setcache command not complete\n", 1849 wd->sc_dev.dv_xname); 1850 return EIO; 1851 } 1852 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1853 char sbuf[sizeof(at_errbits) + 64]; 1854 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1855 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1856 sbuf); 1857 return EIO; 1858 } 1859 return 0; 1860 } 1861 1862 int 1863 wd_standby(struct wd_softc *wd, int flags) 1864 { 1865 struct ata_command ata_c; 1866 1867 memset(&ata_c, 0, sizeof(struct ata_command)); 1868 ata_c.r_command = WDCC_STANDBY_IMMED; 1869 ata_c.r_st_bmask = WDCS_DRDY; 1870 ata_c.r_st_pmask = WDCS_DRDY; 1871 ata_c.flags = flags; 1872 ata_c.timeout = 30000; /* 30s timeout */ 1873 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1874 printf("%s: standby immediate command didn't complete\n", 1875 wd->sc_dev.dv_xname); 1876 return EIO; 1877 } 1878 if (ata_c.flags & AT_ERROR) { 1879 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1880 return ENODEV; 1881 } 1882 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1883 char sbuf[sizeof(at_errbits) + 64]; 1884 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1885 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1886 sbuf); 1887 return EIO; 1888 } 1889 return 0; 1890 } 1891 1892 int 1893 wd_flushcache(struct wd_softc *wd, int flags) 1894 { 1895 struct ata_command ata_c; 1896 1897 /* 1898 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1899 * only ATA-2 and still support it. 1900 */ 1901 if (wd->drvp->ata_vers < 4 && 1902 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1903 wd->sc_params.atap_cmd_set2 == 0xffff)) 1904 return ENODEV; 1905 memset(&ata_c, 0, sizeof(struct ata_command)); 1906 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1907 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1908 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1909 else 1910 ata_c.r_command = WDCC_FLUSHCACHE; 1911 ata_c.r_st_bmask = WDCS_DRDY; 1912 ata_c.r_st_pmask = WDCS_DRDY; 1913 ata_c.flags = flags; 1914 ata_c.timeout = 30000; /* 30s timeout */ 1915 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1916 printf("%s: flush cache command didn't complete\n", 1917 wd->sc_dev.dv_xname); 1918 return EIO; 1919 } 1920 if (ata_c.flags & AT_ERROR) { 1921 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1922 return ENODEV; 1923 } 1924 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1925 char sbuf[sizeof(at_errbits) + 64]; 1926 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1927 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1928 sbuf); 1929 return EIO; 1930 } 1931 return 0; 1932 } 1933 1934 void 1935 wd_shutdown(void *arg) 1936 { 1937 1938 struct wd_softc *wd = arg; 1939 wd_flushcache(wd, AT_POLL); 1940 } 1941 1942 /* 1943 * Allocate space for a ioctl queue structure. Mostly taken from 1944 * scsipi_ioctl.c 1945 */ 1946 struct wd_ioctl * 1947 wi_get(void) 1948 { 1949 struct wd_ioctl *wi; 1950 int s; 1951 1952 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1953 buf_init(&wi->wi_bp); 1954 s = splbio(); 1955 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1956 splx(s); 1957 return (wi); 1958 } 1959 1960 /* 1961 * Free an ioctl structure and remove it from our list 1962 */ 1963 1964 void 1965 wi_free(struct wd_ioctl *wi) 1966 { 1967 int s; 1968 1969 s = splbio(); 1970 LIST_REMOVE(wi, wi_list); 1971 splx(s); 1972 buf_destroy(&wi->wi_bp); 1973 free(wi, M_TEMP); 1974 } 1975 1976 /* 1977 * Find a wd_ioctl structure based on the struct buf. 1978 */ 1979 1980 struct wd_ioctl * 1981 wi_find(struct buf *bp) 1982 { 1983 struct wd_ioctl *wi; 1984 int s; 1985 1986 s = splbio(); 1987 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1988 if (bp == &wi->wi_bp) 1989 break; 1990 splx(s); 1991 return (wi); 1992 } 1993 1994 /* 1995 * Ioctl pseudo strategy routine 1996 * 1997 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1998 * happens here is: 1999 * 2000 * - wdioctl() queues a wd_ioctl structure. 2001 * 2002 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2003 * user space I/O is required. If physio() is called, physio() eventually 2004 * calls wdioctlstrategy(). 2005 * 2006 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2007 * to perform the actual command 2008 * 2009 * The reason for the use of the pseudo strategy routine is because 2010 * when doing I/O to/from user space, physio _really_ wants to be in 2011 * the loop. We could put the entire buffer into the ioctl request 2012 * structure, but that won't scale if we want to do things like download 2013 * microcode. 2014 */ 2015 2016 void 2017 wdioctlstrategy(struct buf *bp) 2018 { 2019 struct wd_ioctl *wi; 2020 struct ata_command ata_c; 2021 int error = 0; 2022 2023 wi = wi_find(bp); 2024 if (wi == NULL) { 2025 printf("wdioctlstrategy: " 2026 "No matching ioctl request found in queue\n"); 2027 error = EINVAL; 2028 goto bad; 2029 } 2030 2031 memset(&ata_c, 0, sizeof(ata_c)); 2032 2033 /* 2034 * Abort if physio broke up the transfer 2035 */ 2036 2037 if (bp->b_bcount != wi->wi_atareq.datalen) { 2038 printf("physio split wd ioctl request... cannot proceed\n"); 2039 error = EIO; 2040 goto bad; 2041 } 2042 2043 /* 2044 * Abort if we didn't get a buffer size that was a multiple of 2045 * our sector size (or was larger than NBBY) 2046 */ 2047 2048 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2049 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2050 (1 << NBBY)) { 2051 error = EINVAL; 2052 goto bad; 2053 } 2054 2055 /* 2056 * Make sure a timeout was supplied in the ioctl request 2057 */ 2058 2059 if (wi->wi_atareq.timeout == 0) { 2060 error = EINVAL; 2061 goto bad; 2062 } 2063 2064 if (wi->wi_atareq.flags & ATACMD_READ) 2065 ata_c.flags |= AT_READ; 2066 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2067 ata_c.flags |= AT_WRITE; 2068 2069 if (wi->wi_atareq.flags & ATACMD_READREG) 2070 ata_c.flags |= AT_READREG; 2071 2072 ata_c.flags |= AT_WAIT; 2073 2074 ata_c.timeout = wi->wi_atareq.timeout; 2075 ata_c.r_command = wi->wi_atareq.command; 2076 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2077 ata_c.r_cyl = wi->wi_atareq.cylinder; 2078 ata_c.r_sector = wi->wi_atareq.sec_num; 2079 ata_c.r_count = wi->wi_atareq.sec_count; 2080 ata_c.r_features = wi->wi_atareq.features; 2081 ata_c.r_st_bmask = WDCS_DRDY; 2082 ata_c.r_st_pmask = WDCS_DRDY; 2083 ata_c.data = wi->wi_bp.b_data; 2084 ata_c.bcount = wi->wi_bp.b_bcount; 2085 2086 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2087 != ATACMD_COMPLETE) { 2088 wi->wi_atareq.retsts = ATACMD_ERROR; 2089 goto bad; 2090 } 2091 2092 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2093 if (ata_c.flags & AT_ERROR) { 2094 wi->wi_atareq.retsts = ATACMD_ERROR; 2095 wi->wi_atareq.error = ata_c.r_error; 2096 } else if (ata_c.flags & AT_DF) 2097 wi->wi_atareq.retsts = ATACMD_DF; 2098 else 2099 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2100 } else { 2101 wi->wi_atareq.retsts = ATACMD_OK; 2102 if (wi->wi_atareq.flags & ATACMD_READREG) { 2103 wi->wi_atareq.head = ata_c.r_head ; 2104 wi->wi_atareq.cylinder = ata_c.r_cyl; 2105 wi->wi_atareq.sec_num = ata_c.r_sector; 2106 wi->wi_atareq.sec_count = ata_c.r_count; 2107 wi->wi_atareq.features = ata_c.r_features; 2108 wi->wi_atareq.error = ata_c.r_error; 2109 } 2110 } 2111 2112 bp->b_error = 0; 2113 biodone(bp); 2114 return; 2115 bad: 2116 bp->b_error = error; 2117 biodone(bp); 2118 } 2119
Indexes created Sun Oct 19 02:09:48 GMT 2025