wd.c revision 1.356
1 /* $NetBSD: wd.c,v 1.356 2008/02/21 21:52:06 drochner 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 1.356 2008/02/21 21:52:06 drochner 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/reboot.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <sys/intr.h> 98 #include <sys/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #include <prop/proplib.h> 108 109 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 110 111 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 112 #define WDIORETRIES 5 /* number of retries before giving up */ 113 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 114 115 #define WDUNIT(dev) DISKUNIT(dev) 116 #define WDPART(dev) DISKPART(dev) 117 #define WDMINOR(unit, part) DISKMINOR(unit, part) 118 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 119 120 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 121 122 #define DEBUG_INTR 0x01 123 #define DEBUG_XFERS 0x02 124 #define DEBUG_STATUS 0x04 125 #define DEBUG_FUNCS 0x08 126 #define DEBUG_PROBE 0x10 127 #ifdef ATADEBUG 128 int wdcdebug_wd_mask = 0x0; 129 #define ATADEBUG_PRINT(args, level) \ 130 if (wdcdebug_wd_mask & (level)) \ 131 printf args 132 #else 133 #define ATADEBUG_PRINT(args, level) 134 #endif 135 136 int wdprobe(struct device *, struct cfdata *, void *); 137 void wdattach(struct device *, struct device *, void *); 138 int wddetach(struct device *, int); 139 int wdactivate(struct device *, enum devact); 140 int wdprint(void *, char *); 141 void wdperror(const struct wd_softc *); 142 143 static bool wd_suspend(device_t); 144 static int wd_standby(struct wd_softc *, int); 145 146 CFATTACH_DECL(wd, sizeof(struct wd_softc), 147 wdprobe, wdattach, wddetach, wdactivate); 148 149 extern struct cfdriver wd_cd; 150 151 dev_type_open(wdopen); 152 dev_type_close(wdclose); 153 dev_type_read(wdread); 154 dev_type_write(wdwrite); 155 dev_type_ioctl(wdioctl); 156 dev_type_strategy(wdstrategy); 157 dev_type_dump(wddump); 158 dev_type_size(wdsize); 159 160 const struct bdevsw wd_bdevsw = { 161 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 162 }; 163 164 const struct cdevsw wd_cdevsw = { 165 wdopen, wdclose, wdread, wdwrite, wdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 /* 170 * Glue necessary to hook WDCIOCCOMMAND into physio 171 */ 172 173 struct wd_ioctl { 174 LIST_ENTRY(wd_ioctl) wi_list; 175 struct buf wi_bp; 176 struct uio wi_uio; 177 struct iovec wi_iov; 178 atareq_t wi_atareq; 179 struct wd_softc *wi_softc; 180 }; 181 182 LIST_HEAD(, wd_ioctl) wi_head; 183 184 struct wd_ioctl *wi_find(struct buf *); 185 void wi_free(struct wd_ioctl *); 186 struct wd_ioctl *wi_get(void); 187 void wdioctlstrategy(struct buf *); 188 189 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 190 void wdgetdisklabel(struct wd_softc *); 191 void wdstart(void *); 192 void __wdstart(struct wd_softc*, struct buf *); 193 void wdrestart(void *); 194 void wddone(void *); 195 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 196 int wd_flushcache(struct wd_softc *, int); 197 void wd_shutdown(void *); 198 199 int wd_getcache(struct wd_softc *, int *); 200 int wd_setcache(struct wd_softc *, int); 201 202 struct dkdriver wddkdriver = { wdstrategy, minphys }; 203 204 #ifdef HAS_BAD144_HANDLING 205 static void bad144intern(struct wd_softc *); 206 #endif 207 208 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 209 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 210 211 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 212 213 /* 214 * Quirk table for IDE drives. Put more-specific matches first, since 215 * a simple globbing routine is used for matching. 216 */ 217 static const struct wd_quirk { 218 const char *wdq_match; /* inquiry pattern to match */ 219 int wdq_quirks; /* drive quirks */ 220 } wd_quirk_table[] = { 221 /* 222 * Some Seagate S-ATA drives have a PHY which can get confused 223 * with the way data is packetized by some S-ATA controllers. 224 * 225 * The work-around is to split in two any write transfer whose 226 * sector count % 15 == 1 (assuming 512 byte sectors). 227 * 228 * XXX This is an incomplete list. There are at least a couple 229 * XXX more model numbers. If you have trouble with such transfers 230 * XXX (8K is the most common) on Seagate S-ATA drives, please 231 * XXX notify thorpej (at) NetBSD.org. 232 */ 233 { "ST3120023AS", 234 WD_QUIRK_SPLIT_MOD15_WRITE }, 235 { "ST380023AS", 236 WD_QUIRK_SPLIT_MOD15_WRITE }, 237 238 /* 239 * These seagate drives seems to have issue addressing sector 0xfffffff 240 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 241 * LBA48 242 * Note that we can't just change the code to always use LBA48 for 243 * sector 0xfffffff, because this would break valid and working 244 * setups using LBA48 drives on non-LBA48-capable controllers 245 * (and it's hard to get a list of such controllers) 246 */ 247 { "ST3160021A*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { "ST3160811A*", 250 WD_QUIRK_FORCE_LBA48 }, 251 { "ST3160812A*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { "ST3160023A*", 254 WD_QUIRK_FORCE_LBA48 }, 255 { "ST3160827A*", 256 WD_QUIRK_FORCE_LBA48 }, 257 /* Attempt to catch all seagate drives larger than 200GB */ 258 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 259 WD_QUIRK_FORCE_LBA48 }, 260 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 261 WD_QUIRK_FORCE_LBA48 }, 262 { NULL, 263 0 } 264 }; 265 266 static const struct wd_quirk * 267 wd_lookup_quirks(const char *name) 268 { 269 const struct wd_quirk *wdq; 270 const char *estr; 271 272 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 273 /* 274 * We only want exact matches (which include matches 275 * against globbing characters). 276 */ 277 if (pmatch(name, wdq->wdq_match, &estr) == 2) 278 return (wdq); 279 } 280 return (NULL); 281 } 282 283 int 284 wdprobe(struct device *parent, struct cfdata *match, void *aux) 285 { 286 struct ata_device *adev = aux; 287 288 if (adev == NULL) 289 return 0; 290 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 291 return 0; 292 293 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 294 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 295 return 0; 296 return 1; 297 } 298 299 void 300 wdattach(struct device *parent, struct device *self, void *aux) 301 { 302 struct wd_softc *wd = (void *)self; 303 struct ata_device *adev= aux; 304 int i, blank; 305 char tbuf[41], pbuf[9], c, *p, *q; 306 const struct wd_quirk *wdq; 307 308 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 309 callout_init(&wd->sc_restart_ch, 0); 310 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 311 #ifdef WD_SOFTBADSECT 312 SLIST_INIT(&wd->sc_bslist); 313 #endif 314 wd->atabus = adev->adev_bustype; 315 wd->openings = adev->adev_openings; 316 wd->drvp = adev->adev_drv_data; 317 318 wd->drvp->drv_done = wddone; 319 wd->drvp->drv_softc = &wd->sc_dev; 320 321 aprint_naive("\n"); 322 323 /* read our drive info */ 324 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 325 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 326 return; 327 } 328 329 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 330 i < sizeof(wd->sc_params.atap_model); i++) { 331 c = *p++; 332 if (c == '\0') 333 break; 334 if (c != ' ') { 335 if (blank) { 336 *q++ = ' '; 337 blank = 0; 338 } 339 *q++ = c; 340 } else 341 blank = 1; 342 } 343 *q++ = '\0'; 344 345 aprint_normal(": <%s>\n", tbuf); 346 347 wdq = wd_lookup_quirks(tbuf); 348 if (wdq != NULL) 349 wd->sc_quirks = wdq->wdq_quirks; 350 351 if (wd->sc_quirks != 0) { 352 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 353 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 354 sbuf, sizeof(sbuf)); 355 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 356 } 357 358 if ((wd->sc_params.atap_multi & 0xff) > 1) { 359 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 360 } else { 361 wd->sc_multi = 1; 362 } 363 364 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 365 wd->sc_dev.dv_xname, wd->sc_multi); 366 367 /* 48-bit LBA addressing */ 368 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 369 wd->sc_flags |= WDF_LBA48; 370 371 /* Prior to ATA-4, LBA was optional. */ 372 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 373 wd->sc_flags |= WDF_LBA; 374 #if 0 375 /* ATA-4 requires LBA. */ 376 if (wd->sc_params.atap_ataversion != 0xffff && 377 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 378 wd->sc_flags |= WDF_LBA; 379 #endif 380 381 if ((wd->sc_flags & WDF_LBA48) != 0) { 382 aprint_verbose(" LBA48 addressing\n"); 383 wd->sc_capacity = 384 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 385 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 386 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 387 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 388 } else if ((wd->sc_flags & WDF_LBA) != 0) { 389 aprint_verbose(" LBA addressing\n"); 390 wd->sc_capacity = 391 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 392 wd->sc_params.atap_capacity[0]; 393 } else { 394 aprint_verbose(" chs addressing\n"); 395 wd->sc_capacity = 396 wd->sc_params.atap_cylinders * 397 wd->sc_params.atap_heads * 398 wd->sc_params.atap_sectors; 399 } 400 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 401 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 402 "%d bytes/sect x %llu sectors\n", 403 self->dv_xname, pbuf, 404 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 405 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 406 wd->sc_params.atap_cylinders, 407 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 408 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 409 410 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 411 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 412 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 413 /* 414 * Initialize and attach the disk structure. 415 */ 416 /* we fill in dk_info later */ 417 disk_init(&wd->sc_dk, wd->sc_dev.dv_xname, &wddkdriver); 418 disk_attach(&wd->sc_dk); 419 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 420 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 421 if (wd->sc_sdhook == NULL) 422 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 423 wd->sc_dev.dv_xname); 424 #if NRND > 0 425 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 426 RND_TYPE_DISK, 0); 427 #endif 428 429 /* Discover wedges on this disk. */ 430 dkwedge_discover(&wd->sc_dk); 431 432 if (!pmf_device_register(self, wd_suspend, NULL)) 433 aprint_error_dev(self, "couldn't establish power handler\n"); 434 } 435 436 static bool 437 wd_suspend(device_t dv) 438 { 439 struct wd_softc *sc = device_private(dv); 440 441 wd_flushcache(sc, AT_WAIT); 442 wd_standby(sc, AT_WAIT); 443 return true; 444 } 445 446 int 447 wdactivate(struct device *self, enum devact act) 448 { 449 int rv = 0; 450 451 switch (act) { 452 case DVACT_ACTIVATE: 453 rv = EOPNOTSUPP; 454 break; 455 456 case DVACT_DEACTIVATE: 457 /* 458 * Nothing to do; we key off the device's DVF_ACTIVATE. 459 */ 460 break; 461 } 462 return (rv); 463 } 464 465 int 466 wddetach(struct device *self, int flags) 467 { 468 struct wd_softc *sc = (struct wd_softc *)self; 469 int s, bmaj, cmaj, i, mn; 470 471 /* locate the major number */ 472 bmaj = bdevsw_lookup_major(&wd_bdevsw); 473 cmaj = cdevsw_lookup_major(&wd_cdevsw); 474 475 /* Nuke the vnodes for any open instances. */ 476 for (i = 0; i < MAXPARTITIONS; i++) { 477 mn = WDMINOR(device_unit(self), i); 478 vdevgone(bmaj, mn, mn, VBLK); 479 vdevgone(cmaj, mn, mn, VCHR); 480 } 481 482 /* Delete all of our wedges. */ 483 dkwedge_delall(&sc->sc_dk); 484 485 s = splbio(); 486 487 /* Kill off any queued buffers. */ 488 bufq_drain(sc->sc_q); 489 490 bufq_free(sc->sc_q); 491 sc->atabus->ata_killpending(sc->drvp); 492 493 splx(s); 494 495 /* Detach disk. */ 496 disk_detach(&sc->sc_dk); 497 498 #ifdef WD_SOFTBADSECT 499 /* Clean out the bad sector list */ 500 while (!SLIST_EMPTY(&sc->sc_bslist)) { 501 void *head = SLIST_FIRST(&sc->sc_bslist); 502 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 503 free(head, M_TEMP); 504 } 505 sc->sc_bscount = 0; 506 #endif 507 508 /* Get rid of the shutdown hook. */ 509 if (sc->sc_sdhook != NULL) 510 shutdownhook_disestablish(sc->sc_sdhook); 511 512 pmf_device_deregister(self); 513 514 #if NRND > 0 515 /* Unhook the entropy source. */ 516 rnd_detach_source(&sc->rnd_source); 517 #endif 518 519 sc->drvp->drive_flags = 0; /* no drive any more here */ 520 521 return (0); 522 } 523 524 /* 525 * Read/write routine for a buffer. Validates the arguments and schedules the 526 * transfer. Does not wait for the transfer to complete. 527 */ 528 void 529 wdstrategy(struct buf *bp) 530 { 531 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 532 struct disklabel *lp = wd->sc_dk.dk_label; 533 daddr_t blkno; 534 int s; 535 536 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 537 DEBUG_XFERS); 538 539 /* Valid request? */ 540 if (bp->b_blkno < 0 || 541 (bp->b_bcount % lp->d_secsize) != 0 || 542 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 543 bp->b_error = EINVAL; 544 goto done; 545 } 546 547 /* If device invalidated (e.g. media change, door open), error. */ 548 if ((wd->sc_flags & WDF_LOADED) == 0) { 549 bp->b_error = EIO; 550 goto done; 551 } 552 553 /* If it's a null transfer, return immediately. */ 554 if (bp->b_bcount == 0) 555 goto done; 556 557 /* 558 * Do bounds checking, adjust transfer. if error, process. 559 * If end of partition, just return. 560 */ 561 if (WDPART(bp->b_dev) == RAW_PART) { 562 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 563 wd->sc_capacity) <= 0) 564 goto done; 565 } else { 566 if (bounds_check_with_label(&wd->sc_dk, bp, 567 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 568 goto done; 569 } 570 571 /* 572 * Now convert the block number to absolute and put it in 573 * terms of the device's logical block size. 574 */ 575 if (lp->d_secsize >= DEV_BSIZE) 576 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 577 else 578 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 579 580 if (WDPART(bp->b_dev) != RAW_PART) 581 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 582 583 bp->b_rawblkno = blkno; 584 585 #ifdef WD_SOFTBADSECT 586 /* 587 * If the transfer about to be attempted contains only a block that 588 * is known to be bad then return an error for the transfer without 589 * even attempting to start a transfer up under the premis that we 590 * will just end up doing more retries for a transfer that will end 591 * up failing again. 592 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 593 */ 594 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 595 struct disk_badsectors *dbs; 596 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 597 598 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 599 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 600 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 601 bp->b_error = EIO; 602 goto done; 603 } 604 } 605 #endif 606 607 /* Queue transfer on drive, activate drive and controller if idle. */ 608 s = splbio(); 609 BUFQ_PUT(wd->sc_q, bp); 610 wdstart(wd); 611 splx(s); 612 return; 613 done: 614 /* Toss transfer; we're done early. */ 615 bp->b_resid = bp->b_bcount; 616 biodone(bp); 617 } 618 619 /* 620 * Queue a drive for I/O. 621 */ 622 void 623 wdstart(void *arg) 624 { 625 struct wd_softc *wd = arg; 626 struct buf *bp = NULL; 627 628 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 629 DEBUG_XFERS); 630 while (wd->openings > 0) { 631 632 /* Is there a buf for us ? */ 633 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 634 return; 635 636 /* 637 * Make the command. First lock the device 638 */ 639 wd->openings--; 640 641 wd->retries = 0; 642 __wdstart(wd, bp); 643 } 644 } 645 646 static void 647 wd_split_mod15_write(struct buf *bp) 648 { 649 struct buf *obp = bp->b_private; 650 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 651 652 if (__predict_false(bp->b_error != 0)) { 653 /* 654 * Propagate the error. If this was the first half of 655 * the original transfer, make sure to account for that 656 * in the residual. 657 */ 658 if (bp->b_data == obp->b_data) 659 bp->b_resid += bp->b_bcount; 660 goto done; 661 } 662 663 /* 664 * If this was the second half of the transfer, we're all done! 665 */ 666 if (bp->b_data != obp->b_data) 667 goto done; 668 669 /* 670 * Advance the pointer to the second half and issue that command 671 * using the same opening. 672 */ 673 bp->b_flags = obp->b_flags; 674 bp->b_oflags = obp->b_oflags; 675 bp->b_cflags = obp->b_cflags; 676 bp->b_data = (char *)bp->b_data + bp->b_bcount; 677 bp->b_blkno += (bp->b_bcount / 512); 678 bp->b_rawblkno += (bp->b_bcount / 512); 679 __wdstart(sc, bp); 680 return; 681 682 done: 683 obp->b_error = bp->b_error; 684 obp->b_resid = bp->b_resid; 685 putiobuf(bp); 686 biodone(obp); 687 sc->openings++; 688 /* wddone() will call wdstart() */ 689 } 690 691 void 692 __wdstart(struct wd_softc *wd, struct buf *bp) 693 { 694 695 /* 696 * Deal with the "split mod15 write" quirk. We just divide the 697 * transfer in two, doing the first half and then then second half 698 * with the same command opening. 699 * 700 * Note we MUST do this here, because we can't let insertion 701 * into the bufq cause the transfers to be re-merged. 702 */ 703 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 704 (bp->b_flags & B_READ) == 0 && 705 bp->b_bcount > 512 && 706 ((bp->b_bcount / 512) % 15) == 1)) { 707 struct buf *nbp; 708 709 /* already at splbio */ 710 nbp = getiobuf(NULL, false); 711 if (__predict_false(nbp == NULL)) { 712 /* No memory -- fail the iop. */ 713 bp->b_error = ENOMEM; 714 bp->b_resid = bp->b_bcount; 715 biodone(bp); 716 wd->openings++; 717 return; 718 } 719 720 nbp->b_error = 0; 721 nbp->b_proc = bp->b_proc; 722 nbp->b_dev = bp->b_dev; 723 724 nbp->b_bcount = bp->b_bcount / 2; 725 nbp->b_bufsize = bp->b_bcount / 2; 726 nbp->b_data = bp->b_data; 727 728 nbp->b_blkno = bp->b_blkno; 729 nbp->b_rawblkno = bp->b_rawblkno; 730 731 nbp->b_flags = bp->b_flags; 732 nbp->b_oflags = bp->b_oflags; 733 nbp->b_cflags = bp->b_cflags; 734 nbp->b_iodone = wd_split_mod15_write; 735 736 /* Put ptr to orig buf in b_private and use new buf */ 737 nbp->b_private = bp; 738 739 BIO_COPYPRIO(nbp, bp); 740 741 bp = nbp; 742 } 743 744 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 745 wd->sc_wdc_bio.blkdone =0; 746 wd->sc_bp = bp; 747 /* 748 * If we're retrying, retry in single-sector mode. This will give us 749 * the sector number of the problem, and will eventually allow the 750 * transfer to succeed. 751 */ 752 if (wd->retries >= WDIORETRIES_SINGLE) 753 wd->sc_wdc_bio.flags = ATA_SINGLE; 754 else 755 wd->sc_wdc_bio.flags = 0; 756 if (wd->sc_flags & WDF_LBA48 && 757 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 758 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 759 wd->sc_wdc_bio.flags |= ATA_LBA48; 760 if (wd->sc_flags & WDF_LBA) 761 wd->sc_wdc_bio.flags |= ATA_LBA; 762 if (bp->b_flags & B_READ) 763 wd->sc_wdc_bio.flags |= ATA_READ; 764 wd->sc_wdc_bio.bcount = bp->b_bcount; 765 wd->sc_wdc_bio.databuf = bp->b_data; 766 /* Instrumentation. */ 767 disk_busy(&wd->sc_dk); 768 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 769 case ATACMD_TRY_AGAIN: 770 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 771 break; 772 case ATACMD_QUEUED: 773 case ATACMD_COMPLETE: 774 break; 775 default: 776 panic("__wdstart: bad return code from ata_bio()"); 777 } 778 } 779 780 void 781 wddone(void *v) 782 { 783 struct wd_softc *wd = v; 784 struct buf *bp = wd->sc_bp; 785 const char *errmsg; 786 int do_perror = 0; 787 int nblks; 788 789 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 790 DEBUG_XFERS); 791 if (bp == NULL) 792 return; 793 bp->b_resid = wd->sc_wdc_bio.bcount; 794 switch (wd->sc_wdc_bio.error) { 795 case ERR_DMA: 796 errmsg = "DMA error"; 797 goto retry; 798 case ERR_DF: 799 errmsg = "device fault"; 800 goto retry; 801 case TIMEOUT: 802 errmsg = "device timeout"; 803 goto retry; 804 case ERR_RESET: 805 errmsg = "channel reset"; 806 goto retry2; 807 case ERROR: 808 /* Don't care about media change bits */ 809 if (wd->sc_wdc_bio.r_error != 0 && 810 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 811 goto noerror; 812 errmsg = "error"; 813 do_perror = 1; 814 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 815 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 816 nblks = wd->sc_wdc_bio.bcount / 817 wd->sc_dk.dk_label->d_secsize; 818 /* 819 * If we get a "id not found" when crossing the 820 * LBA48_THRESHOLD, and the drive is larger than 821 * 128GB, then we can assume the drive has the 822 * LBA48 bug and we switch to LBA48. 823 */ 824 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 825 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 826 wd->sc_capacity > LBA48_THRESHOLD + 1) { 827 errmsg = "LBA48 bug"; 828 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 829 do_perror = 0; 830 goto retry2; 831 } 832 } 833 retry: /* Just reset and retry. Can we do more ? */ 834 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 835 retry2: 836 diskerr(bp, "wd", errmsg, LOG_PRINTF, 837 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 838 if (wd->retries < WDIORETRIES) 839 printf(", retrying"); 840 printf("\n"); 841 if (do_perror) 842 wdperror(wd); 843 if (wd->retries < WDIORETRIES) { 844 wd->retries++; 845 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 846 wdrestart, wd); 847 return; 848 } 849 850 #ifdef WD_SOFTBADSECT 851 /* 852 * Not all errors indicate a failed block but those that do, 853 * put the block on the bad-block list for the device. Only 854 * do this for reads because the drive should do it for writes, 855 * itself, according to Manuel. 856 */ 857 if ((bp->b_flags & B_READ) && 858 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 859 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 860 struct disk_badsectors *dbs; 861 862 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 863 dbs->dbs_min = bp->b_rawblkno; 864 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 865 microtime(&dbs->dbs_failedat); 866 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 867 wd->sc_bscount++; 868 } 869 #endif 870 bp->b_error = EIO; 871 break; 872 case NOERROR: 873 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 874 printf("%s: soft error (corrected)\n", 875 wd->sc_dev.dv_xname); 876 break; 877 case ERR_NODEV: 878 bp->b_error = EIO; 879 break; 880 } 881 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 882 (bp->b_flags & B_READ)); 883 #if NRND > 0 884 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 885 #endif 886 /* XXX Yuck, but we don't want to increment openings in this case */ 887 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 888 biodone(bp); 889 else { 890 biodone(bp); 891 wd->openings++; 892 } 893 wdstart(wd); 894 } 895 896 void 897 wdrestart(void *v) 898 { 899 struct wd_softc *wd = v; 900 struct buf *bp = wd->sc_bp; 901 int s; 902 903 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 904 DEBUG_XFERS); 905 s = splbio(); 906 __wdstart(v, bp); 907 splx(s); 908 } 909 910 int 911 wdread(dev_t dev, struct uio *uio, int flags) 912 { 913 914 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 915 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 916 } 917 918 int 919 wdwrite(dev_t dev, struct uio *uio, int flags) 920 { 921 922 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 923 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 924 } 925 926 int 927 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 928 { 929 struct wd_softc *wd; 930 int part, error; 931 932 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 933 wd = device_lookup(&wd_cd, WDUNIT(dev)); 934 if (wd == NULL) 935 return (ENXIO); 936 937 if (! device_is_active(&wd->sc_dev)) 938 return (ENODEV); 939 940 part = WDPART(dev); 941 942 mutex_enter(&wd->sc_dk.dk_openlock); 943 944 /* 945 * If there are wedges, and this is not RAW_PART, then we 946 * need to fail. 947 */ 948 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 949 error = EBUSY; 950 goto bad1; 951 } 952 953 /* 954 * If this is the first open of this device, add a reference 955 * to the adapter. 956 */ 957 if (wd->sc_dk.dk_openmask == 0 && 958 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 959 goto bad1; 960 961 if (wd->sc_dk.dk_openmask != 0) { 962 /* 963 * If any partition is open, but the disk has been invalidated, 964 * disallow further opens. 965 */ 966 if ((wd->sc_flags & WDF_LOADED) == 0) { 967 error = EIO; 968 goto bad2; 969 } 970 } else { 971 if ((wd->sc_flags & WDF_LOADED) == 0) { 972 wd->sc_flags |= WDF_LOADED; 973 974 /* Load the physical device parameters. */ 975 wd_get_params(wd, AT_WAIT, &wd->sc_params); 976 977 /* Load the partition info if not already loaded. */ 978 wdgetdisklabel(wd); 979 } 980 } 981 982 /* Check that the partition exists. */ 983 if (part != RAW_PART && 984 (part >= wd->sc_dk.dk_label->d_npartitions || 985 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 986 error = ENXIO; 987 goto bad2; 988 } 989 990 /* Insure only one open at a time. */ 991 switch (fmt) { 992 case S_IFCHR: 993 wd->sc_dk.dk_copenmask |= (1 << part); 994 break; 995 case S_IFBLK: 996 wd->sc_dk.dk_bopenmask |= (1 << part); 997 break; 998 } 999 wd->sc_dk.dk_openmask = 1000 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1001 1002 mutex_exit(&wd->sc_dk.dk_openlock); 1003 return 0; 1004 1005 bad2: 1006 if (wd->sc_dk.dk_openmask == 0) 1007 wd->atabus->ata_delref(wd->drvp); 1008 bad1: 1009 mutex_exit(&wd->sc_dk.dk_openlock); 1010 return error; 1011 } 1012 1013 int 1014 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1015 { 1016 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1017 int part = WDPART(dev); 1018 1019 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1020 1021 mutex_enter(&wd->sc_dk.dk_openlock); 1022 1023 switch (fmt) { 1024 case S_IFCHR: 1025 wd->sc_dk.dk_copenmask &= ~(1 << part); 1026 break; 1027 case S_IFBLK: 1028 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1029 break; 1030 } 1031 wd->sc_dk.dk_openmask = 1032 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1033 1034 if (wd->sc_dk.dk_openmask == 0) { 1035 wd_flushcache(wd, AT_WAIT); 1036 1037 if (! (wd->sc_flags & WDF_KLABEL)) 1038 wd->sc_flags &= ~WDF_LOADED; 1039 1040 wd->atabus->ata_delref(wd->drvp); 1041 } 1042 1043 mutex_exit(&wd->sc_dk.dk_openlock); 1044 return 0; 1045 } 1046 1047 void 1048 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1049 { 1050 1051 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1052 memset(lp, 0, sizeof(struct disklabel)); 1053 1054 lp->d_secsize = DEV_BSIZE; 1055 lp->d_ntracks = wd->sc_params.atap_heads; 1056 lp->d_nsectors = wd->sc_params.atap_sectors; 1057 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1058 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1059 wd->sc_params.atap_cylinders; 1060 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1061 1062 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1063 lp->d_type = DTYPE_ST506; 1064 else 1065 lp->d_type = DTYPE_ESDI; 1066 1067 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1068 strncpy(lp->d_packname, "fictitious", 16); 1069 if (wd->sc_capacity > UINT32_MAX) 1070 lp->d_secperunit = UINT32_MAX; 1071 else 1072 lp->d_secperunit = wd->sc_capacity; 1073 lp->d_rpm = 3600; 1074 lp->d_interleave = 1; 1075 lp->d_flags = 0; 1076 1077 lp->d_partitions[RAW_PART].p_offset = 0; 1078 lp->d_partitions[RAW_PART].p_size = 1079 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1080 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1081 lp->d_npartitions = RAW_PART + 1; 1082 1083 lp->d_magic = DISKMAGIC; 1084 lp->d_magic2 = DISKMAGIC; 1085 lp->d_checksum = dkcksum(lp); 1086 } 1087 1088 /* 1089 * Fabricate a default disk label, and try to read the correct one. 1090 */ 1091 void 1092 wdgetdisklabel(struct wd_softc *wd) 1093 { 1094 struct disklabel *lp = wd->sc_dk.dk_label; 1095 const char *errstring; 1096 int s; 1097 1098 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1099 1100 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1101 1102 wdgetdefaultlabel(wd, lp); 1103 1104 wd->sc_badsect[0] = -1; 1105 1106 if (wd->drvp->state > RESET) { 1107 s = splbio(); 1108 wd->drvp->drive_flags |= DRIVE_RESET; 1109 splx(s); 1110 } 1111 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1112 RAW_PART), wdstrategy, lp, 1113 wd->sc_dk.dk_cpulabel); 1114 if (errstring) { 1115 /* 1116 * This probably happened because the drive's default 1117 * geometry doesn't match the DOS geometry. We 1118 * assume the DOS geometry is now in the label and try 1119 * again. XXX This is a kluge. 1120 */ 1121 if (wd->drvp->state > RESET) { 1122 s = splbio(); 1123 wd->drvp->drive_flags |= DRIVE_RESET; 1124 splx(s); 1125 } 1126 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1127 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1128 } 1129 if (errstring) { 1130 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1131 return; 1132 } 1133 1134 if (wd->drvp->state > RESET) { 1135 s = splbio(); 1136 wd->drvp->drive_flags |= DRIVE_RESET; 1137 splx(s); 1138 } 1139 #ifdef HAS_BAD144_HANDLING 1140 if ((lp->d_flags & D_BADSECT) != 0) 1141 bad144intern(wd); 1142 #endif 1143 } 1144 1145 void 1146 wdperror(const struct wd_softc *wd) 1147 { 1148 static const char *const errstr0_3[] = {"address mark not found", 1149 "track 0 not found", "aborted command", "media change requested", 1150 "id not found", "media changed", "uncorrectable data error", 1151 "bad block detected"}; 1152 static const char *const errstr4_5[] = { 1153 "obsolete (address mark not found)", 1154 "no media/write protected", "aborted command", 1155 "media change requested", "id not found", "media changed", 1156 "uncorrectable data error", "interface CRC error"}; 1157 const char *const *errstr; 1158 int i; 1159 const char *sep = ""; 1160 1161 const char *devname = wd->sc_dev.dv_xname; 1162 struct ata_drive_datas *drvp = wd->drvp; 1163 int errno = wd->sc_wdc_bio.r_error; 1164 1165 if (drvp->ata_vers >= 4) 1166 errstr = errstr4_5; 1167 else 1168 errstr = errstr0_3; 1169 1170 printf("%s: (", devname); 1171 1172 if (errno == 0) 1173 printf("error not notified"); 1174 1175 for (i = 0; i < 8; i++) { 1176 if (errno & (1 << i)) { 1177 printf("%s%s", sep, errstr[i]); 1178 sep = ", "; 1179 } 1180 } 1181 printf(")\n"); 1182 } 1183 1184 int 1185 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1186 { 1187 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1188 int error = 0, s; 1189 #ifdef __HAVE_OLD_DISKLABEL 1190 struct disklabel *newlabel = NULL; 1191 #endif 1192 1193 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1194 1195 if ((wd->sc_flags & WDF_LOADED) == 0) 1196 return EIO; 1197 1198 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1199 if (error != EPASSTHROUGH) 1200 return (error); 1201 1202 switch (xfer) { 1203 #ifdef HAS_BAD144_HANDLING 1204 case DIOCSBAD: 1205 if ((flag & FWRITE) == 0) 1206 return EBADF; 1207 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1208 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1209 bad144intern(wd); 1210 return 0; 1211 #endif 1212 #ifdef WD_SOFTBADSECT 1213 case DIOCBSLIST : 1214 { 1215 u_int32_t count, missing, skip; 1216 struct disk_badsecinfo dbsi; 1217 struct disk_badsectors *dbs; 1218 size_t available; 1219 uint8_t *laddr; 1220 1221 dbsi = *(struct disk_badsecinfo *)addr; 1222 missing = wd->sc_bscount; 1223 count = 0; 1224 available = dbsi.dbsi_bufsize; 1225 skip = dbsi.dbsi_skip; 1226 laddr = (uint8_t *)dbsi.dbsi_buffer; 1227 1228 /* 1229 * We start this loop with the expectation that all of the 1230 * entries will be missed and decrement this counter each 1231 * time we either skip over one (already copied out) or 1232 * we actually copy it back to user space. The structs 1233 * holding the bad sector information are copied directly 1234 * back to user space whilst the summary is returned via 1235 * the struct passed in via the ioctl. 1236 */ 1237 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1238 if (skip > 0) { 1239 missing--; 1240 skip--; 1241 continue; 1242 } 1243 if (available < sizeof(*dbs)) 1244 break; 1245 available -= sizeof(*dbs); 1246 copyout(dbs, laddr, sizeof(*dbs)); 1247 laddr += sizeof(*dbs); 1248 missing--; 1249 count++; 1250 } 1251 dbsi.dbsi_left = missing; 1252 dbsi.dbsi_copied = count; 1253 *(struct disk_badsecinfo *)addr = dbsi; 1254 return 0; 1255 } 1256 1257 case DIOCBSFLUSH : 1258 /* Clean out the bad sector list */ 1259 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1260 void *head = SLIST_FIRST(&wd->sc_bslist); 1261 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1262 free(head, M_TEMP); 1263 } 1264 wd->sc_bscount = 0; 1265 return 0; 1266 #endif 1267 case DIOCGDINFO: 1268 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1269 return 0; 1270 #ifdef __HAVE_OLD_DISKLABEL 1271 case ODIOCGDINFO: 1272 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1273 if (newlabel == NULL) 1274 return EIO; 1275 *newlabel = *(wd->sc_dk.dk_label); 1276 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1277 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1278 else 1279 error = ENOTTY; 1280 free(newlabel, M_TEMP); 1281 return error; 1282 #endif 1283 1284 case DIOCGPART: 1285 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1286 ((struct partinfo *)addr)->part = 1287 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1288 return 0; 1289 1290 case DIOCWDINFO: 1291 case DIOCSDINFO: 1292 #ifdef __HAVE_OLD_DISKLABEL 1293 case ODIOCWDINFO: 1294 case ODIOCSDINFO: 1295 #endif 1296 { 1297 struct disklabel *lp; 1298 1299 if ((flag & FWRITE) == 0) 1300 return EBADF; 1301 1302 #ifdef __HAVE_OLD_DISKLABEL 1303 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1304 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1305 if (newlabel == NULL) 1306 return EIO; 1307 memset(newlabel, 0, sizeof newlabel); 1308 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1309 lp = newlabel; 1310 } else 1311 #endif 1312 lp = (struct disklabel *)addr; 1313 1314 mutex_enter(&wd->sc_dk.dk_openlock); 1315 wd->sc_flags |= WDF_LABELLING; 1316 1317 error = setdisklabel(wd->sc_dk.dk_label, 1318 lp, /*wd->sc_dk.dk_openmask : */0, 1319 wd->sc_dk.dk_cpulabel); 1320 if (error == 0) { 1321 if (wd->drvp->state > RESET) { 1322 s = splbio(); 1323 wd->drvp->drive_flags |= DRIVE_RESET; 1324 splx(s); 1325 } 1326 if (xfer == DIOCWDINFO 1327 #ifdef __HAVE_OLD_DISKLABEL 1328 || xfer == ODIOCWDINFO 1329 #endif 1330 ) 1331 error = writedisklabel(WDLABELDEV(dev), 1332 wdstrategy, wd->sc_dk.dk_label, 1333 wd->sc_dk.dk_cpulabel); 1334 } 1335 1336 wd->sc_flags &= ~WDF_LABELLING; 1337 mutex_exit(&wd->sc_dk.dk_openlock); 1338 #ifdef __HAVE_OLD_DISKLABEL 1339 if (newlabel != NULL) 1340 free(newlabel, M_TEMP); 1341 #endif 1342 return error; 1343 } 1344 1345 case DIOCKLABEL: 1346 if (*(int *)addr) 1347 wd->sc_flags |= WDF_KLABEL; 1348 else 1349 wd->sc_flags &= ~WDF_KLABEL; 1350 return 0; 1351 1352 case DIOCWLABEL: 1353 if ((flag & FWRITE) == 0) 1354 return EBADF; 1355 if (*(int *)addr) 1356 wd->sc_flags |= WDF_WLABEL; 1357 else 1358 wd->sc_flags &= ~WDF_WLABEL; 1359 return 0; 1360 1361 case DIOCGDEFLABEL: 1362 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1363 return 0; 1364 #ifdef __HAVE_OLD_DISKLABEL 1365 case ODIOCGDEFLABEL: 1366 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1367 if (newlabel == NULL) 1368 return EIO; 1369 wdgetdefaultlabel(wd, newlabel); 1370 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1371 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1372 else 1373 error = ENOTTY; 1374 free(newlabel, M_TEMP); 1375 return error; 1376 #endif 1377 1378 #ifdef notyet 1379 case DIOCWFORMAT: 1380 if ((flag & FWRITE) == 0) 1381 return EBADF; 1382 { 1383 register struct format_op *fop; 1384 struct iovec aiov; 1385 struct uio auio; 1386 1387 fop = (struct format_op *)addr; 1388 aiov.iov_base = fop->df_buf; 1389 aiov.iov_len = fop->df_count; 1390 auio.uio_iov = &aiov; 1391 auio.uio_iovcnt = 1; 1392 auio.uio_resid = fop->df_count; 1393 auio.uio_offset = 1394 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1395 auio.uio_vmspace = l->l_proc->p_vmspace; 1396 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1397 &auio); 1398 fop->df_count -= auio.uio_resid; 1399 fop->df_reg[0] = wdc->sc_status; 1400 fop->df_reg[1] = wdc->sc_error; 1401 return error; 1402 } 1403 #endif 1404 case DIOCGCACHE: 1405 return wd_getcache(wd, (int *)addr); 1406 1407 case DIOCSCACHE: 1408 return wd_setcache(wd, *(int *)addr); 1409 1410 case DIOCCACHESYNC: 1411 return wd_flushcache(wd, AT_WAIT); 1412 1413 case ATAIOCCOMMAND: 1414 /* 1415 * Make sure this command is (relatively) safe first 1416 */ 1417 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1418 (flag & FWRITE) == 0) 1419 return (EBADF); 1420 { 1421 struct wd_ioctl *wi; 1422 atareq_t *atareq = (atareq_t *) addr; 1423 int error1; 1424 1425 wi = wi_get(); 1426 wi->wi_softc = wd; 1427 wi->wi_atareq = *atareq; 1428 1429 if (atareq->datalen && atareq->flags & 1430 (ATACMD_READ | ATACMD_WRITE)) { 1431 void *tbuf; 1432 if (atareq->datalen < DEV_BSIZE 1433 && atareq->command == WDCC_IDENTIFY) { 1434 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1435 wi->wi_iov.iov_base = tbuf; 1436 wi->wi_iov.iov_len = DEV_BSIZE; 1437 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1438 } else { 1439 tbuf = NULL; 1440 wi->wi_iov.iov_base = atareq->databuf; 1441 wi->wi_iov.iov_len = atareq->datalen; 1442 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1443 } 1444 wi->wi_uio.uio_iov = &wi->wi_iov; 1445 wi->wi_uio.uio_iovcnt = 1; 1446 wi->wi_uio.uio_resid = atareq->datalen; 1447 wi->wi_uio.uio_offset = 0; 1448 wi->wi_uio.uio_rw = 1449 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1450 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1451 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1452 minphys, &wi->wi_uio); 1453 if (tbuf != NULL && error1 == 0) { 1454 error1 = copyout(tbuf, atareq->databuf, 1455 atareq->datalen); 1456 free(tbuf, M_TEMP); 1457 } 1458 } else { 1459 /* No need to call physio if we don't have any 1460 user data */ 1461 wi->wi_bp.b_flags = 0; 1462 wi->wi_bp.b_data = 0; 1463 wi->wi_bp.b_bcount = 0; 1464 wi->wi_bp.b_dev = 0; 1465 wi->wi_bp.b_proc = l->l_proc; 1466 wdioctlstrategy(&wi->wi_bp); 1467 error1 = wi->wi_bp.b_error; 1468 } 1469 *atareq = wi->wi_atareq; 1470 wi_free(wi); 1471 return(error1); 1472 } 1473 1474 case DIOCAWEDGE: 1475 { 1476 struct dkwedge_info *dkw = (void *) addr; 1477 1478 if ((flag & FWRITE) == 0) 1479 return (EBADF); 1480 1481 /* If the ioctl happens here, the parent is us. */ 1482 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1483 return (dkwedge_add(dkw)); 1484 } 1485 1486 case DIOCDWEDGE: 1487 { 1488 struct dkwedge_info *dkw = (void *) addr; 1489 1490 if ((flag & FWRITE) == 0) 1491 return (EBADF); 1492 1493 /* If the ioctl happens here, the parent is us. */ 1494 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1495 return (dkwedge_del(dkw)); 1496 } 1497 1498 case DIOCLWEDGES: 1499 { 1500 struct dkwedge_list *dkwl = (void *) addr; 1501 1502 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1503 } 1504 1505 case DIOCGSTRATEGY: 1506 { 1507 struct disk_strategy *dks = (void *)addr; 1508 1509 s = splbio(); 1510 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1511 sizeof(dks->dks_name)); 1512 splx(s); 1513 dks->dks_paramlen = 0; 1514 1515 return 0; 1516 } 1517 1518 case DIOCSSTRATEGY: 1519 { 1520 struct disk_strategy *dks = (void *)addr; 1521 struct bufq_state *new; 1522 struct bufq_state *old; 1523 1524 if ((flag & FWRITE) == 0) { 1525 return EBADF; 1526 } 1527 if (dks->dks_param != NULL) { 1528 return EINVAL; 1529 } 1530 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1531 error = bufq_alloc(&new, dks->dks_name, 1532 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1533 if (error) { 1534 return error; 1535 } 1536 s = splbio(); 1537 old = wd->sc_q; 1538 bufq_move(new, old); 1539 wd->sc_q = new; 1540 splx(s); 1541 bufq_free(old); 1542 1543 return 0; 1544 } 1545 1546 default: 1547 return ENOTTY; 1548 } 1549 1550 #ifdef DIAGNOSTIC 1551 panic("wdioctl: impossible"); 1552 #endif 1553 } 1554 1555 #ifdef B_FORMAT 1556 int 1557 wdformat(struct buf *bp) 1558 { 1559 1560 bp->b_flags |= B_FORMAT; 1561 return wdstrategy(bp); 1562 } 1563 #endif 1564 1565 int 1566 wdsize(dev_t dev) 1567 { 1568 struct wd_softc *wd; 1569 int part, omask; 1570 int size; 1571 1572 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1573 1574 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1575 if (wd == NULL) 1576 return (-1); 1577 1578 part = WDPART(dev); 1579 omask = wd->sc_dk.dk_openmask & (1 << part); 1580 1581 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1582 return (-1); 1583 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1584 size = -1; 1585 else 1586 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1587 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1588 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1589 return (-1); 1590 return (size); 1591 } 1592 1593 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1594 static int wddoingadump = 0; 1595 static int wddumprecalibrated = 0; 1596 1597 /* 1598 * Dump core after a system crash. 1599 */ 1600 int 1601 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1602 { 1603 struct wd_softc *wd; /* disk unit to do the I/O */ 1604 struct disklabel *lp; /* disk's disklabel */ 1605 int part, err; 1606 int nblks; /* total number of sectors left to write */ 1607 1608 /* Check if recursive dump; if so, punt. */ 1609 if (wddoingadump) 1610 return EFAULT; 1611 wddoingadump = 1; 1612 1613 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1614 if (wd == NULL) 1615 return (ENXIO); 1616 1617 part = WDPART(dev); 1618 1619 /* Convert to disk sectors. Request must be a multiple of size. */ 1620 lp = wd->sc_dk.dk_label; 1621 if ((size % lp->d_secsize) != 0) 1622 return EFAULT; 1623 nblks = size / lp->d_secsize; 1624 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1625 1626 /* Check transfer bounds against partition size. */ 1627 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1628 return EINVAL; 1629 1630 /* Offset block number to start of partition. */ 1631 blkno += lp->d_partitions[part].p_offset; 1632 1633 /* Recalibrate, if first dump transfer. */ 1634 if (wddumprecalibrated == 0) { 1635 wddumprecalibrated = 1; 1636 (*wd->atabus->ata_reset_drive)(wd->drvp, 1637 AT_POLL | AT_RST_EMERG); 1638 wd->drvp->state = RESET; 1639 } 1640 1641 wd->sc_bp = NULL; 1642 wd->sc_wdc_bio.blkno = blkno; 1643 wd->sc_wdc_bio.flags = ATA_POLL; 1644 if (wd->sc_flags & WDF_LBA48 && 1645 (blkno > LBA48_THRESHOLD || 1646 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1647 wd->sc_wdc_bio.flags |= ATA_LBA48; 1648 if (wd->sc_flags & WDF_LBA) 1649 wd->sc_wdc_bio.flags |= ATA_LBA; 1650 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1651 wd->sc_wdc_bio.databuf = va; 1652 #ifndef WD_DUMP_NOT_TRUSTED 1653 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1654 case ATACMD_TRY_AGAIN: 1655 panic("wddump: try again"); 1656 break; 1657 case ATACMD_QUEUED: 1658 panic("wddump: polled command has been queued"); 1659 break; 1660 case ATACMD_COMPLETE: 1661 break; 1662 } 1663 switch(wd->sc_wdc_bio.error) { 1664 case TIMEOUT: 1665 printf("wddump: device timed out"); 1666 err = EIO; 1667 break; 1668 case ERR_DF: 1669 printf("wddump: drive fault"); 1670 err = EIO; 1671 break; 1672 case ERR_DMA: 1673 printf("wddump: DMA error"); 1674 err = EIO; 1675 break; 1676 case ERROR: 1677 printf("wddump: "); 1678 wdperror(wd); 1679 err = EIO; 1680 break; 1681 case NOERROR: 1682 err = 0; 1683 break; 1684 default: 1685 panic("wddump: unknown error type"); 1686 } 1687 if (err != 0) { 1688 printf("\n"); 1689 return err; 1690 } 1691 #else /* WD_DUMP_NOT_TRUSTED */ 1692 /* Let's just talk about this first... */ 1693 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1694 unit, va, cylin, head, sector); 1695 delay(500 * 1000); /* half a second */ 1696 #endif 1697 1698 wddoingadump = 0; 1699 return 0; 1700 } 1701 1702 #ifdef HAS_BAD144_HANDLING 1703 /* 1704 * Internalize the bad sector table. 1705 */ 1706 void 1707 bad144intern(struct wd_softc *wd) 1708 { 1709 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1710 struct disklabel *lp = wd->sc_dk.dk_label; 1711 int i = 0; 1712 1713 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1714 1715 for (; i < NBT_BAD; i++) { 1716 if (bt->bt_bad[i].bt_cyl == 0xffff) 1717 break; 1718 wd->sc_badsect[i] = 1719 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1720 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1721 (bt->bt_bad[i].bt_trksec & 0xff); 1722 } 1723 for (; i < NBT_BAD+1; i++) 1724 wd->sc_badsect[i] = -1; 1725 } 1726 #endif 1727 1728 static void 1729 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1730 { 1731 prop_dictionary_t disk_info, odisk_info, geom; 1732 const char *cp; 1733 1734 disk_info = prop_dictionary_create(); 1735 1736 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1737 cp = "ST506"; 1738 else { 1739 /* XXX Should have a case for ATA here, too. */ 1740 cp = "ESDI"; 1741 } 1742 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1743 1744 geom = prop_dictionary_create(); 1745 1746 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1747 1748 prop_dictionary_set_uint32(geom, "sector-size", 1749 DEV_BSIZE /* XXX 512? */); 1750 1751 prop_dictionary_set_uint16(geom, "sectors-per-track", 1752 wd->sc_params.atap_sectors); 1753 1754 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1755 wd->sc_params.atap_heads); 1756 1757 if (wd->sc_flags & WDF_LBA) 1758 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1759 wd->sc_capacity / 1760 (wd->sc_params.atap_heads * 1761 wd->sc_params.atap_sectors)); 1762 else 1763 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1764 wd->sc_params.atap_cylinders); 1765 1766 prop_dictionary_set(disk_info, "geometry", geom); 1767 prop_object_release(geom); 1768 1769 prop_dictionary_set(device_properties(&wd->sc_dev), 1770 "disk-info", disk_info); 1771 1772 /* 1773 * Don't release disk_info here; we keep a reference to it. 1774 * disk_detach() will release it when we go away. 1775 */ 1776 1777 odisk_info = wd->sc_dk.dk_info; 1778 wd->sc_dk.dk_info = disk_info; 1779 if (odisk_info) 1780 prop_object_release(odisk_info); 1781 } 1782 1783 int 1784 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1785 { 1786 1787 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1788 case CMD_AGAIN: 1789 return 1; 1790 case CMD_ERR: 1791 /* 1792 * We `know' there's a drive here; just assume it's old. 1793 * This geometry is only used to read the MBR and print a 1794 * (false) attach message. 1795 */ 1796 strncpy(params->atap_model, "ST506", 1797 sizeof params->atap_model); 1798 params->atap_config = ATA_CFG_FIXED; 1799 params->atap_cylinders = 1024; 1800 params->atap_heads = 8; 1801 params->atap_sectors = 17; 1802 params->atap_multi = 1; 1803 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1804 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1805 /* FALLTHROUGH */ 1806 case CMD_OK: 1807 wd_params_to_properties(wd, params); 1808 return 0; 1809 default: 1810 panic("wd_get_params: bad return code from ata_get_params"); 1811 /* NOTREACHED */ 1812 } 1813 } 1814 1815 int 1816 wd_getcache(struct wd_softc *wd, int *bitsp) 1817 { 1818 struct ataparams params; 1819 1820 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1821 return EIO; 1822 if (params.atap_cmd_set1 == 0x0000 || 1823 params.atap_cmd_set1 == 0xffff || 1824 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1825 *bitsp = 0; 1826 return 0; 1827 } 1828 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1829 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1830 *bitsp |= DKCACHE_WRITE; 1831 1832 return 0; 1833 } 1834 1835 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1836 1837 int 1838 wd_setcache(struct wd_softc *wd, int bits) 1839 { 1840 struct ataparams params; 1841 struct ata_command ata_c; 1842 1843 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1844 return EIO; 1845 1846 if (params.atap_cmd_set1 == 0x0000 || 1847 params.atap_cmd_set1 == 0xffff || 1848 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1849 return EOPNOTSUPP; 1850 1851 if ((bits & DKCACHE_READ) == 0 || 1852 (bits & DKCACHE_SAVE) != 0) 1853 return EOPNOTSUPP; 1854 1855 memset(&ata_c, 0, sizeof(struct ata_command)); 1856 ata_c.r_command = SET_FEATURES; 1857 ata_c.r_st_bmask = 0; 1858 ata_c.r_st_pmask = 0; 1859 ata_c.timeout = 30000; /* 30s timeout */ 1860 ata_c.flags = AT_WAIT; 1861 if (bits & DKCACHE_WRITE) 1862 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1863 else 1864 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1865 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1866 printf("%s: wd_setcache command not complete\n", 1867 wd->sc_dev.dv_xname); 1868 return EIO; 1869 } 1870 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1871 char sbuf[sizeof(at_errbits) + 64]; 1872 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1873 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1874 sbuf); 1875 return EIO; 1876 } 1877 return 0; 1878 } 1879 1880 static int 1881 wd_standby(struct wd_softc *wd, int flags) 1882 { 1883 struct ata_command ata_c; 1884 1885 memset(&ata_c, 0, sizeof(struct ata_command)); 1886 ata_c.r_command = WDCC_STANDBY_IMMED; 1887 ata_c.r_st_bmask = WDCS_DRDY; 1888 ata_c.r_st_pmask = WDCS_DRDY; 1889 ata_c.flags = flags; 1890 ata_c.timeout = 30000; /* 30s timeout */ 1891 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1892 aprint_error_dev(&wd->sc_dev, 1893 "standby immediate command didn't complete\n"); 1894 return EIO; 1895 } 1896 if (ata_c.flags & AT_ERROR) { 1897 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1898 return ENODEV; 1899 } 1900 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1901 char sbuf[sizeof(at_errbits) + 64]; 1902 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1903 aprint_error_dev(&wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1904 return EIO; 1905 } 1906 return 0; 1907 } 1908 1909 int 1910 wd_flushcache(struct wd_softc *wd, int flags) 1911 { 1912 struct ata_command ata_c; 1913 1914 /* 1915 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1916 * only ATA-2 and still support it. 1917 */ 1918 if (wd->drvp->ata_vers < 4 && 1919 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1920 wd->sc_params.atap_cmd_set2 == 0xffff)) 1921 return ENODEV; 1922 memset(&ata_c, 0, sizeof(struct ata_command)); 1923 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1924 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1925 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1926 else 1927 ata_c.r_command = WDCC_FLUSHCACHE; 1928 ata_c.r_st_bmask = WDCS_DRDY; 1929 ata_c.r_st_pmask = WDCS_DRDY; 1930 ata_c.flags = flags; 1931 ata_c.timeout = 30000; /* 30s timeout */ 1932 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1933 printf("%s: flush cache command didn't complete\n", 1934 wd->sc_dev.dv_xname); 1935 return EIO; 1936 } 1937 if (ata_c.flags & AT_ERROR) { 1938 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1939 return ENODEV; 1940 } 1941 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1942 char sbuf[sizeof(at_errbits) + 64]; 1943 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1944 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1945 sbuf); 1946 return EIO; 1947 } 1948 return 0; 1949 } 1950 1951 void 1952 wd_shutdown(void *arg) 1953 { 1954 1955 struct wd_softc *wd = arg; 1956 wd_flushcache(wd, AT_POLL); 1957 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) 1958 wd_standby(wd, AT_POLL); 1959 } 1960 1961 /* 1962 * Allocate space for a ioctl queue structure. Mostly taken from 1963 * scsipi_ioctl.c 1964 */ 1965 struct wd_ioctl * 1966 wi_get(void) 1967 { 1968 struct wd_ioctl *wi; 1969 int s; 1970 1971 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1972 buf_init(&wi->wi_bp); 1973 s = splbio(); 1974 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1975 splx(s); 1976 return (wi); 1977 } 1978 1979 /* 1980 * Free an ioctl structure and remove it from our list 1981 */ 1982 1983 void 1984 wi_free(struct wd_ioctl *wi) 1985 { 1986 int s; 1987 1988 s = splbio(); 1989 LIST_REMOVE(wi, wi_list); 1990 splx(s); 1991 buf_destroy(&wi->wi_bp); 1992 free(wi, M_TEMP); 1993 } 1994 1995 /* 1996 * Find a wd_ioctl structure based on the struct buf. 1997 */ 1998 1999 struct wd_ioctl * 2000 wi_find(struct buf *bp) 2001 { 2002 struct wd_ioctl *wi; 2003 int s; 2004 2005 s = splbio(); 2006 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 2007 if (bp == &wi->wi_bp) 2008 break; 2009 splx(s); 2010 return (wi); 2011 } 2012 2013 /* 2014 * Ioctl pseudo strategy routine 2015 * 2016 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2017 * happens here is: 2018 * 2019 * - wdioctl() queues a wd_ioctl structure. 2020 * 2021 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2022 * user space I/O is required. If physio() is called, physio() eventually 2023 * calls wdioctlstrategy(). 2024 * 2025 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2026 * to perform the actual command 2027 * 2028 * The reason for the use of the pseudo strategy routine is because 2029 * when doing I/O to/from user space, physio _really_ wants to be in 2030 * the loop. We could put the entire buffer into the ioctl request 2031 * structure, but that won't scale if we want to do things like download 2032 * microcode. 2033 */ 2034 2035 void 2036 wdioctlstrategy(struct buf *bp) 2037 { 2038 struct wd_ioctl *wi; 2039 struct ata_command ata_c; 2040 int error = 0; 2041 2042 wi = wi_find(bp); 2043 if (wi == NULL) { 2044 printf("wdioctlstrategy: " 2045 "No matching ioctl request found in queue\n"); 2046 error = EINVAL; 2047 goto bad; 2048 } 2049 2050 memset(&ata_c, 0, sizeof(ata_c)); 2051 2052 /* 2053 * Abort if physio broke up the transfer 2054 */ 2055 2056 if (bp->b_bcount != wi->wi_atareq.datalen) { 2057 printf("physio split wd ioctl request... cannot proceed\n"); 2058 error = EIO; 2059 goto bad; 2060 } 2061 2062 /* 2063 * Abort if we didn't get a buffer size that was a multiple of 2064 * our sector size (or was larger than NBBY) 2065 */ 2066 2067 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2068 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2069 (1 << NBBY)) { 2070 error = EINVAL; 2071 goto bad; 2072 } 2073 2074 /* 2075 * Make sure a timeout was supplied in the ioctl request 2076 */ 2077 2078 if (wi->wi_atareq.timeout == 0) { 2079 error = EINVAL; 2080 goto bad; 2081 } 2082 2083 if (wi->wi_atareq.flags & ATACMD_READ) 2084 ata_c.flags |= AT_READ; 2085 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2086 ata_c.flags |= AT_WRITE; 2087 2088 if (wi->wi_atareq.flags & ATACMD_READREG) 2089 ata_c.flags |= AT_READREG; 2090 2091 ata_c.flags |= AT_WAIT; 2092 2093 ata_c.timeout = wi->wi_atareq.timeout; 2094 ata_c.r_command = wi->wi_atareq.command; 2095 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2096 ata_c.r_cyl = wi->wi_atareq.cylinder; 2097 ata_c.r_sector = wi->wi_atareq.sec_num; 2098 ata_c.r_count = wi->wi_atareq.sec_count; 2099 ata_c.r_features = wi->wi_atareq.features; 2100 ata_c.r_st_bmask = WDCS_DRDY; 2101 ata_c.r_st_pmask = WDCS_DRDY; 2102 ata_c.data = wi->wi_bp.b_data; 2103 ata_c.bcount = wi->wi_bp.b_bcount; 2104 2105 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2106 != ATACMD_COMPLETE) { 2107 wi->wi_atareq.retsts = ATACMD_ERROR; 2108 goto bad; 2109 } 2110 2111 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2112 if (ata_c.flags & AT_ERROR) { 2113 wi->wi_atareq.retsts = ATACMD_ERROR; 2114 wi->wi_atareq.error = ata_c.r_error; 2115 } else if (ata_c.flags & AT_DF) 2116 wi->wi_atareq.retsts = ATACMD_DF; 2117 else 2118 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2119 } else { 2120 wi->wi_atareq.retsts = ATACMD_OK; 2121 if (wi->wi_atareq.flags & ATACMD_READREG) { 2122 wi->wi_atareq.head = ata_c.r_head ; 2123 wi->wi_atareq.cylinder = ata_c.r_cyl; 2124 wi->wi_atareq.sec_num = ata_c.r_sector; 2125 wi->wi_atareq.sec_count = ata_c.r_count; 2126 wi->wi_atareq.features = ata_c.r_features; 2127 wi->wi_atareq.error = ata_c.r_error; 2128 } 2129 } 2130 2131 bp->b_error = 0; 2132 biodone(bp); 2133 return; 2134 bad: 2135 bp->b_error = error; 2136 biodone(bp); 2137 } 2138
Indexes created Fri Sep 26 20:09:58 GMT 2025