wd.c revision 1.345
1 /* $NetBSD: wd.c,v 1.345 2007/09/16 18:41:47 bouyer 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 1.345 2007/09/16 18:41:47 bouyer 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 <machine/intr.h> 97 #include <machine/bus.h> 98 99 #include <dev/ata/atareg.h> 100 #include <dev/ata/atavar.h> 101 #include <dev/ata/wdvar.h> 102 #include <dev/ic/wdcreg.h> 103 #include <sys/ataio.h> 104 #include "locators.h" 105 106 #include <prop/proplib.h> 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 CFATTACH_DECL(wd, sizeof(struct wd_softc), 143 wdprobe, wdattach, wddetach, wdactivate); 144 145 extern struct cfdriver wd_cd; 146 147 dev_type_open(wdopen); 148 dev_type_close(wdclose); 149 dev_type_read(wdread); 150 dev_type_write(wdwrite); 151 dev_type_ioctl(wdioctl); 152 dev_type_strategy(wdstrategy); 153 dev_type_dump(wddump); 154 dev_type_size(wdsize); 155 156 const struct bdevsw wd_bdevsw = { 157 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 158 }; 159 160 const struct cdevsw wd_cdevsw = { 161 wdopen, wdclose, wdread, wdwrite, wdioctl, 162 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 163 }; 164 165 /* 166 * Glue necessary to hook WDCIOCCOMMAND into physio 167 */ 168 169 struct wd_ioctl { 170 LIST_ENTRY(wd_ioctl) wi_list; 171 struct buf wi_bp; 172 struct uio wi_uio; 173 struct iovec wi_iov; 174 atareq_t wi_atareq; 175 struct wd_softc *wi_softc; 176 }; 177 178 LIST_HEAD(, wd_ioctl) wi_head; 179 180 struct wd_ioctl *wi_find(struct buf *); 181 void wi_free(struct wd_ioctl *); 182 struct wd_ioctl *wi_get(void); 183 void wdioctlstrategy(struct buf *); 184 185 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 186 void wdgetdisklabel(struct wd_softc *); 187 void wdstart(void *); 188 void __wdstart(struct wd_softc*, struct buf *); 189 void wdrestart(void *); 190 void wddone(void *); 191 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 192 int wd_standby(struct wd_softc *, int); 193 int wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy, minphys }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 207 208 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 209 210 /* 211 * Quirk table for IDE drives. Put more-specific matches first, since 212 * a simple globbing routine is used for matching. 213 */ 214 static const struct wd_quirk { 215 const char *wdq_match; /* inquiry pattern to match */ 216 int wdq_quirks; /* drive quirks */ 217 } wd_quirk_table[] = { 218 /* 219 * Some Seagate S-ATA drives have a PHY which can get confused 220 * with the way data is packetized by some S-ATA controllers. 221 * 222 * The work-around is to split in two any write transfer whose 223 * sector count % 15 == 1 (assuming 512 byte sectors). 224 * 225 * XXX This is an incomplete list. There are at least a couple 226 * XXX more model numbers. If you have trouble with such transfers 227 * XXX (8K is the most common) on Seagate S-ATA drives, please 228 * XXX notify thorpej (at) NetBSD.org. 229 */ 230 { "ST3120023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 { "ST380023AS", 233 WD_QUIRK_SPLIT_MOD15_WRITE }, 234 235 /* 236 * These seagate drives seems to have issue addressing sector 0xfffffff 237 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 238 * LBA48 239 * Note that we can't just change the code to always use LBA48 for 240 * sector 0xfffffff, because this would break valid and working 241 * setups using LBA48 drives on non-LBA48-capable controllers 242 * (and it's hard to get a list of such controllers) 243 */ 244 { "ST3160021A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160811A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160812A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 { "ST3160023A*", 251 WD_QUIRK_FORCE_LBA48 }, 252 { "ST3160827A*", 253 WD_QUIRK_FORCE_LBA48 }, 254 /* Attempt to catch all seagate drives larger than 200GB */ 255 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 256 WD_QUIRK_FORCE_LBA48 }, 257 { NULL, 258 0 } 259 }; 260 261 static const struct wd_quirk * 262 wd_lookup_quirks(const char *name) 263 { 264 const struct wd_quirk *wdq; 265 const char *estr; 266 267 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 268 /* 269 * We only want exact matches (which include matches 270 * against globbing characters). 271 */ 272 if (pmatch(name, wdq->wdq_match, &estr) == 2) 273 return (wdq); 274 } 275 return (NULL); 276 } 277 278 int 279 wdprobe(struct device *parent, struct cfdata *match, void *aux) 280 { 281 struct ata_device *adev = aux; 282 283 if (adev == NULL) 284 return 0; 285 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 286 return 0; 287 288 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 289 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 290 return 0; 291 return 1; 292 } 293 294 void 295 wdattach(struct device *parent, struct device *self, void *aux) 296 { 297 struct wd_softc *wd = (void *)self; 298 struct ata_device *adev= aux; 299 int i, blank; 300 char tbuf[41], pbuf[9], c, *p, *q; 301 const struct wd_quirk *wdq; 302 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 303 304 callout_init(&wd->sc_restart_ch, 0); 305 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 306 #ifdef WD_SOFTBADSECT 307 SLIST_INIT(&wd->sc_bslist); 308 #endif 309 wd->atabus = adev->adev_bustype; 310 wd->openings = adev->adev_openings; 311 wd->drvp = adev->adev_drv_data; 312 313 wd->drvp->drv_done = wddone; 314 wd->drvp->drv_softc = &wd->sc_dev; 315 316 aprint_naive("\n"); 317 318 /* read our drive info */ 319 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 320 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 321 return; 322 } 323 324 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 325 i < sizeof(wd->sc_params.atap_model); i++) { 326 c = *p++; 327 if (c == '\0') 328 break; 329 if (c != ' ') { 330 if (blank) { 331 *q++ = ' '; 332 blank = 0; 333 } 334 *q++ = c; 335 } else 336 blank = 1; 337 } 338 *q++ = '\0'; 339 340 aprint_normal(": <%s>\n", tbuf); 341 342 wdq = wd_lookup_quirks(tbuf); 343 if (wdq != NULL) 344 wd->sc_quirks = wdq->wdq_quirks; 345 346 if (wd->sc_quirks != 0) { 347 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 348 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 349 sbuf, sizeof(sbuf)); 350 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 351 } 352 353 if ((wd->sc_params.atap_multi & 0xff) > 1) { 354 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 355 } else { 356 wd->sc_multi = 1; 357 } 358 359 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 360 wd->sc_dev.dv_xname, wd->sc_multi); 361 362 /* 48-bit LBA addressing */ 363 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 364 wd->sc_flags |= WDF_LBA48; 365 366 /* Prior to ATA-4, LBA was optional. */ 367 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 368 wd->sc_flags |= WDF_LBA; 369 #if 0 370 /* ATA-4 requires LBA. */ 371 if (wd->sc_params.atap_ataversion != 0xffff && 372 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 373 wd->sc_flags |= WDF_LBA; 374 #endif 375 376 if ((wd->sc_flags & WDF_LBA48) != 0) { 377 aprint_verbose(" LBA48 addressing\n"); 378 wd->sc_capacity = 379 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 380 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 381 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 382 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 383 } else if ((wd->sc_flags & WDF_LBA) != 0) { 384 aprint_verbose(" LBA addressing\n"); 385 wd->sc_capacity = 386 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 387 wd->sc_params.atap_capacity[0]; 388 } else { 389 aprint_verbose(" chs addressing\n"); 390 wd->sc_capacity = 391 wd->sc_params.atap_cylinders * 392 wd->sc_params.atap_heads * 393 wd->sc_params.atap_sectors; 394 } 395 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 396 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 397 "%d bytes/sect x %llu sectors\n", 398 self->dv_xname, pbuf, 399 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 400 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 401 wd->sc_params.atap_cylinders, 402 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 403 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 404 405 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 406 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 407 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 408 /* 409 * Initialize and attach the disk structure. 410 */ 411 wd->sc_dk.dk_driver = &wddkdriver; 412 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 413 /* we fill in dk_info later */ 414 disk_attach(&wd->sc_dk); 415 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 416 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 417 if (wd->sc_sdhook == NULL) 418 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 419 wd->sc_dev.dv_xname); 420 #if NRND > 0 421 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 422 RND_TYPE_DISK, 0); 423 #endif 424 425 /* Discover wedges on this disk. */ 426 dkwedge_discover(&wd->sc_dk); 427 } 428 429 int 430 wdactivate(struct device *self, enum devact act) 431 { 432 int rv = 0; 433 434 switch (act) { 435 case DVACT_ACTIVATE: 436 rv = EOPNOTSUPP; 437 break; 438 439 case DVACT_DEACTIVATE: 440 /* 441 * Nothing to do; we key off the device's DVF_ACTIVATE. 442 */ 443 break; 444 } 445 return (rv); 446 } 447 448 int 449 wddetach(struct device *self, int flags) 450 { 451 struct wd_softc *sc = (struct wd_softc *)self; 452 int s, bmaj, cmaj, i, mn; 453 454 /* locate the major number */ 455 bmaj = bdevsw_lookup_major(&wd_bdevsw); 456 cmaj = cdevsw_lookup_major(&wd_cdevsw); 457 458 /* Nuke the vnodes for any open instances. */ 459 for (i = 0; i < MAXPARTITIONS; i++) { 460 mn = WDMINOR(device_unit(self), i); 461 vdevgone(bmaj, mn, mn, VBLK); 462 vdevgone(cmaj, mn, mn, VCHR); 463 } 464 465 /* Delete all of our wedges. */ 466 dkwedge_delall(&sc->sc_dk); 467 468 s = splbio(); 469 470 /* Kill off any queued buffers. */ 471 bufq_drain(sc->sc_q); 472 473 bufq_free(sc->sc_q); 474 sc->atabus->ata_killpending(sc->drvp); 475 476 splx(s); 477 478 /* Detach disk. */ 479 disk_detach(&sc->sc_dk); 480 481 #ifdef WD_SOFTBADSECT 482 /* Clean out the bad sector list */ 483 while (!SLIST_EMPTY(&sc->sc_bslist)) { 484 void *head = SLIST_FIRST(&sc->sc_bslist); 485 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 486 free(head, M_TEMP); 487 } 488 sc->sc_bscount = 0; 489 #endif 490 491 /* Get rid of the shutdown hook. */ 492 if (sc->sc_sdhook != NULL) 493 shutdownhook_disestablish(sc->sc_sdhook); 494 495 #if NRND > 0 496 /* Unhook the entropy source. */ 497 rnd_detach_source(&sc->rnd_source); 498 #endif 499 500 sc->drvp->drive_flags = 0; /* no drive any more here */ 501 502 return (0); 503 } 504 505 /* 506 * Read/write routine for a buffer. Validates the arguments and schedules the 507 * transfer. Does not wait for the transfer to complete. 508 */ 509 void 510 wdstrategy(struct buf *bp) 511 { 512 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 513 struct disklabel *lp = wd->sc_dk.dk_label; 514 daddr_t blkno; 515 int s; 516 517 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 518 DEBUG_XFERS); 519 520 /* Valid request? */ 521 if (bp->b_blkno < 0 || 522 (bp->b_bcount % lp->d_secsize) != 0 || 523 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 524 bp->b_error = EINVAL; 525 goto done; 526 } 527 528 /* If device invalidated (e.g. media change, door open), error. */ 529 if ((wd->sc_flags & WDF_LOADED) == 0) { 530 bp->b_error = EIO; 531 goto done; 532 } 533 534 /* If it's a null transfer, return immediately. */ 535 if (bp->b_bcount == 0) 536 goto done; 537 538 /* 539 * Do bounds checking, adjust transfer. if error, process. 540 * If end of partition, just return. 541 */ 542 if (WDPART(bp->b_dev) == RAW_PART) { 543 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 544 wd->sc_capacity) <= 0) 545 goto done; 546 } else { 547 if (bounds_check_with_label(&wd->sc_dk, bp, 548 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 549 goto done; 550 } 551 552 /* 553 * Now convert the block number to absolute and put it in 554 * terms of the device's logical block size. 555 */ 556 if (lp->d_secsize >= DEV_BSIZE) 557 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 558 else 559 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 560 561 if (WDPART(bp->b_dev) != RAW_PART) 562 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 563 564 bp->b_rawblkno = blkno; 565 566 #ifdef WD_SOFTBADSECT 567 /* 568 * If the transfer about to be attempted contains only a block that 569 * is known to be bad then return an error for the transfer without 570 * even attempting to start a transfer up under the premis that we 571 * will just end up doing more retries for a transfer that will end 572 * up failing again. 573 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 574 */ 575 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 576 struct disk_badsectors *dbs; 577 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 578 579 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 580 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 581 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 582 bp->b_error = EIO; 583 goto done; 584 } 585 } 586 #endif 587 588 /* Queue transfer on drive, activate drive and controller if idle. */ 589 s = splbio(); 590 BUFQ_PUT(wd->sc_q, bp); 591 wdstart(wd); 592 splx(s); 593 return; 594 done: 595 /* Toss transfer; we're done early. */ 596 bp->b_resid = bp->b_bcount; 597 biodone(bp); 598 } 599 600 /* 601 * Queue a drive for I/O. 602 */ 603 void 604 wdstart(void *arg) 605 { 606 struct wd_softc *wd = arg; 607 struct buf *bp = NULL; 608 609 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 610 DEBUG_XFERS); 611 while (wd->openings > 0) { 612 613 /* Is there a buf for us ? */ 614 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 615 return; 616 617 /* 618 * Make the command. First lock the device 619 */ 620 wd->openings--; 621 622 wd->retries = 0; 623 __wdstart(wd, bp); 624 } 625 } 626 627 static void 628 wd_split_mod15_write(struct buf *bp) 629 { 630 struct buf *obp = bp->b_private; 631 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 632 633 if (__predict_false(bp->b_error != 0)) { 634 /* 635 * Propagate the error. If this was the first half of 636 * the original transfer, make sure to account for that 637 * in the residual. 638 */ 639 if (bp->b_data == obp->b_data) 640 bp->b_resid += bp->b_bcount; 641 goto done; 642 } 643 644 /* 645 * If this was the second half of the transfer, we're all done! 646 */ 647 if (bp->b_data != obp->b_data) 648 goto done; 649 650 /* 651 * Advance the pointer to the second half and issue that command 652 * using the same opening. 653 */ 654 bp->b_flags = obp->b_flags | B_CALL; 655 bp->b_data = (char *)bp->b_data + bp->b_bcount; 656 bp->b_blkno += (bp->b_bcount / 512); 657 bp->b_rawblkno += (bp->b_bcount / 512); 658 __wdstart(sc, bp); 659 return; 660 661 done: 662 obp->b_error = bp->b_error; 663 obp->b_resid = bp->b_resid; 664 putiobuf(bp); 665 biodone(obp); 666 sc->openings++; 667 /* wddone() will call wdstart() */ 668 } 669 670 void 671 __wdstart(struct wd_softc *wd, struct buf *bp) 672 { 673 674 /* 675 * Deal with the "split mod15 write" quirk. We just divide the 676 * transfer in two, doing the first half and then then second half 677 * with the same command opening. 678 * 679 * Note we MUST do this here, because we can't let insertion 680 * into the bufq cause the transfers to be re-merged. 681 */ 682 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 683 (bp->b_flags & B_READ) == 0 && 684 bp->b_bcount > 512 && 685 ((bp->b_bcount / 512) % 15) == 1)) { 686 struct buf *nbp; 687 688 /* already at splbio */ 689 nbp = getiobuf_nowait(); 690 if (__predict_false(nbp == NULL)) { 691 /* No memory -- fail the iop. */ 692 bp->b_error = ENOMEM; 693 bp->b_resid = bp->b_bcount; 694 biodone(bp); 695 wd->openings++; 696 return; 697 } 698 699 nbp->b_error = 0; 700 nbp->b_proc = bp->b_proc; 701 nbp->b_vp = NULLVP; 702 nbp->b_dev = bp->b_dev; 703 704 nbp->b_bcount = bp->b_bcount / 2; 705 nbp->b_bufsize = bp->b_bcount / 2; 706 nbp->b_data = bp->b_data; 707 708 nbp->b_blkno = bp->b_blkno; 709 nbp->b_rawblkno = bp->b_rawblkno; 710 711 nbp->b_flags = bp->b_flags | B_CALL; 712 nbp->b_iodone = wd_split_mod15_write; 713 714 /* Put ptr to orig buf in b_private and use new buf */ 715 nbp->b_private = bp; 716 717 BIO_COPYPRIO(nbp, bp); 718 719 bp = nbp; 720 } 721 722 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 723 wd->sc_wdc_bio.blkdone =0; 724 wd->sc_bp = bp; 725 /* 726 * If we're retrying, retry in single-sector mode. This will give us 727 * the sector number of the problem, and will eventually allow the 728 * transfer to succeed. 729 */ 730 if (wd->retries >= WDIORETRIES_SINGLE) 731 wd->sc_wdc_bio.flags = ATA_SINGLE; 732 else 733 wd->sc_wdc_bio.flags = 0; 734 if (wd->sc_flags & WDF_LBA48 && 735 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 736 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 737 wd->sc_wdc_bio.flags |= ATA_LBA48; 738 if (wd->sc_flags & WDF_LBA) 739 wd->sc_wdc_bio.flags |= ATA_LBA; 740 if (bp->b_flags & B_READ) 741 wd->sc_wdc_bio.flags |= ATA_READ; 742 wd->sc_wdc_bio.bcount = bp->b_bcount; 743 wd->sc_wdc_bio.databuf = bp->b_data; 744 /* Instrumentation. */ 745 disk_busy(&wd->sc_dk); 746 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 747 case ATACMD_TRY_AGAIN: 748 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 749 break; 750 case ATACMD_QUEUED: 751 case ATACMD_COMPLETE: 752 break; 753 default: 754 panic("__wdstart: bad return code from ata_bio()"); 755 } 756 } 757 758 void 759 wddone(void *v) 760 { 761 struct wd_softc *wd = v; 762 struct buf *bp = wd->sc_bp; 763 const char *errmsg; 764 int do_perror = 0; 765 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 766 DEBUG_XFERS); 767 int nblks; 768 769 if (bp == NULL) 770 return; 771 bp->b_resid = wd->sc_wdc_bio.bcount; 772 switch (wd->sc_wdc_bio.error) { 773 case ERR_DMA: 774 errmsg = "DMA error"; 775 goto retry; 776 case ERR_DF: 777 errmsg = "device fault"; 778 goto retry; 779 case TIMEOUT: 780 errmsg = "device timeout"; 781 goto retry; 782 case ERR_RESET: 783 errmsg = "channel reset"; 784 goto retry2; 785 case ERROR: 786 /* Don't care about media change bits */ 787 if (wd->sc_wdc_bio.r_error != 0 && 788 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 789 goto noerror; 790 errmsg = "error"; 791 do_perror = 1; 792 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 793 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 794 nblks = wd->sc_wdc_bio.bcount / 795 wd->sc_dk.dk_label->d_secsize; 796 /* 797 * If we get a "id not found" when crossing the 798 * LBA48_THRESHOLD, and the drive is larger than 799 * 128GB, then we can assume the drive has the 800 * LBA48 bug and we switch to LBA48. 801 */ 802 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 803 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 804 wd->sc_capacity > LBA48_THRESHOLD + 1) { 805 errmsg = "LBA48 bug"; 806 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 807 do_perror = 0; 808 goto retry2; 809 } 810 } 811 retry: /* Just reset and retry. Can we do more ? */ 812 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 813 retry2: 814 diskerr(bp, "wd", errmsg, LOG_PRINTF, 815 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 816 if (wd->retries < WDIORETRIES) 817 printf(", retrying"); 818 printf("\n"); 819 if (do_perror) 820 wdperror(wd); 821 if (wd->retries < WDIORETRIES) { 822 wd->retries++; 823 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 824 wdrestart, wd); 825 return; 826 } 827 828 #ifdef WD_SOFTBADSECT 829 /* 830 * Not all errors indicate a failed block but those that do, 831 * put the block on the bad-block list for the device. Only 832 * do this for reads because the drive should do it for writes, 833 * itself, according to Manuel. 834 */ 835 if ((bp->b_flags & B_READ) && 836 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 837 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 838 struct disk_badsectors *dbs; 839 840 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 841 dbs->dbs_min = bp->b_rawblkno; 842 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 843 microtime(&dbs->dbs_failedat); 844 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 845 wd->sc_bscount++; 846 } 847 #endif 848 bp->b_error = EIO; 849 break; 850 case NOERROR: 851 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 852 printf("%s: soft error (corrected)\n", 853 wd->sc_dev.dv_xname); 854 break; 855 case ERR_NODEV: 856 bp->b_error = EIO; 857 break; 858 } 859 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 860 (bp->b_flags & B_READ)); 861 #if NRND > 0 862 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 863 #endif 864 /* XXX Yuck, but we don't want to increment openings in this case */ 865 if (__predict_false((bp->b_flags & B_CALL) != 0 && 866 bp->b_iodone == wd_split_mod15_write)) 867 biodone(bp); 868 else { 869 biodone(bp); 870 wd->openings++; 871 } 872 wdstart(wd); 873 } 874 875 void 876 wdrestart(void *v) 877 { 878 struct wd_softc *wd = v; 879 struct buf *bp = wd->sc_bp; 880 int s; 881 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 882 DEBUG_XFERS); 883 884 s = splbio(); 885 __wdstart(v, bp); 886 splx(s); 887 } 888 889 int 890 wdread(dev_t dev, struct uio *uio, int flags) 891 { 892 893 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 894 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 895 } 896 897 int 898 wdwrite(dev_t dev, struct uio *uio, int flags) 899 { 900 901 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 902 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 903 } 904 905 int 906 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 907 { 908 struct wd_softc *wd; 909 int part, error; 910 911 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 912 wd = device_lookup(&wd_cd, WDUNIT(dev)); 913 if (wd == NULL) 914 return (ENXIO); 915 916 if (! device_is_active(&wd->sc_dev)) 917 return (ENODEV); 918 919 part = WDPART(dev); 920 921 mutex_enter(&wd->sc_dk.dk_openlock); 922 923 /* 924 * If there are wedges, and this is not RAW_PART, then we 925 * need to fail. 926 */ 927 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 928 error = EBUSY; 929 goto bad1; 930 } 931 932 /* 933 * If this is the first open of this device, add a reference 934 * to the adapter. 935 */ 936 if (wd->sc_dk.dk_openmask == 0 && 937 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 938 goto bad1; 939 940 if (wd->sc_dk.dk_openmask != 0) { 941 /* 942 * If any partition is open, but the disk has been invalidated, 943 * disallow further opens. 944 */ 945 if ((wd->sc_flags & WDF_LOADED) == 0) { 946 error = EIO; 947 goto bad2; 948 } 949 } else { 950 if ((wd->sc_flags & WDF_LOADED) == 0) { 951 wd->sc_flags |= WDF_LOADED; 952 953 /* Load the physical device parameters. */ 954 wd_get_params(wd, AT_WAIT, &wd->sc_params); 955 956 /* Load the partition info if not already loaded. */ 957 wdgetdisklabel(wd); 958 } 959 } 960 961 /* Check that the partition exists. */ 962 if (part != RAW_PART && 963 (part >= wd->sc_dk.dk_label->d_npartitions || 964 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 965 error = ENXIO; 966 goto bad2; 967 } 968 969 /* Insure only one open at a time. */ 970 switch (fmt) { 971 case S_IFCHR: 972 wd->sc_dk.dk_copenmask |= (1 << part); 973 break; 974 case S_IFBLK: 975 wd->sc_dk.dk_bopenmask |= (1 << part); 976 break; 977 } 978 wd->sc_dk.dk_openmask = 979 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 980 981 mutex_exit(&wd->sc_dk.dk_openlock); 982 return 0; 983 984 bad2: 985 if (wd->sc_dk.dk_openmask == 0) 986 wd->atabus->ata_delref(wd->drvp); 987 bad1: 988 mutex_exit(&wd->sc_dk.dk_openlock); 989 return error; 990 } 991 992 int 993 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 994 { 995 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 996 int part = WDPART(dev); 997 998 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 999 1000 mutex_enter(&wd->sc_dk.dk_openlock); 1001 1002 switch (fmt) { 1003 case S_IFCHR: 1004 wd->sc_dk.dk_copenmask &= ~(1 << part); 1005 break; 1006 case S_IFBLK: 1007 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1008 break; 1009 } 1010 wd->sc_dk.dk_openmask = 1011 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1012 1013 if (wd->sc_dk.dk_openmask == 0) { 1014 wd_flushcache(wd, AT_WAIT); 1015 1016 if (! (wd->sc_flags & WDF_KLABEL)) 1017 wd->sc_flags &= ~WDF_LOADED; 1018 1019 wd->atabus->ata_delref(wd->drvp); 1020 } 1021 1022 mutex_exit(&wd->sc_dk.dk_openlock); 1023 return 0; 1024 } 1025 1026 void 1027 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1028 { 1029 1030 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1031 memset(lp, 0, sizeof(struct disklabel)); 1032 1033 lp->d_secsize = DEV_BSIZE; 1034 lp->d_ntracks = wd->sc_params.atap_heads; 1035 lp->d_nsectors = wd->sc_params.atap_sectors; 1036 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1037 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1038 wd->sc_params.atap_cylinders; 1039 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1040 1041 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1042 lp->d_type = DTYPE_ST506; 1043 else 1044 lp->d_type = DTYPE_ESDI; 1045 1046 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1047 strncpy(lp->d_packname, "fictitious", 16); 1048 if (wd->sc_capacity > UINT32_MAX) 1049 lp->d_secperunit = UINT32_MAX; 1050 else 1051 lp->d_secperunit = wd->sc_capacity; 1052 lp->d_rpm = 3600; 1053 lp->d_interleave = 1; 1054 lp->d_flags = 0; 1055 1056 lp->d_partitions[RAW_PART].p_offset = 0; 1057 lp->d_partitions[RAW_PART].p_size = 1058 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1059 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1060 lp->d_npartitions = RAW_PART + 1; 1061 1062 lp->d_magic = DISKMAGIC; 1063 lp->d_magic2 = DISKMAGIC; 1064 lp->d_checksum = dkcksum(lp); 1065 } 1066 1067 /* 1068 * Fabricate a default disk label, and try to read the correct one. 1069 */ 1070 void 1071 wdgetdisklabel(struct wd_softc *wd) 1072 { 1073 struct disklabel *lp = wd->sc_dk.dk_label; 1074 const char *errstring; 1075 int s; 1076 1077 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1078 1079 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1080 1081 wdgetdefaultlabel(wd, lp); 1082 1083 wd->sc_badsect[0] = -1; 1084 1085 if (wd->drvp->state > RESET) { 1086 s = splbio(); 1087 wd->drvp->drive_flags |= DRIVE_RESET; 1088 splx(s); 1089 } 1090 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1091 RAW_PART), wdstrategy, lp, 1092 wd->sc_dk.dk_cpulabel); 1093 if (errstring) { 1094 /* 1095 * This probably happened because the drive's default 1096 * geometry doesn't match the DOS geometry. We 1097 * assume the DOS geometry is now in the label and try 1098 * again. XXX This is a kluge. 1099 */ 1100 if (wd->drvp->state > RESET) { 1101 s = splbio(); 1102 wd->drvp->drive_flags |= DRIVE_RESET; 1103 splx(s); 1104 } 1105 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1106 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1107 } 1108 if (errstring) { 1109 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1110 return; 1111 } 1112 1113 if (wd->drvp->state > RESET) { 1114 s = splbio(); 1115 wd->drvp->drive_flags |= DRIVE_RESET; 1116 splx(s); 1117 } 1118 #ifdef HAS_BAD144_HANDLING 1119 if ((lp->d_flags & D_BADSECT) != 0) 1120 bad144intern(wd); 1121 #endif 1122 } 1123 1124 void 1125 wdperror(const struct wd_softc *wd) 1126 { 1127 static const char *const errstr0_3[] = {"address mark not found", 1128 "track 0 not found", "aborted command", "media change requested", 1129 "id not found", "media changed", "uncorrectable data error", 1130 "bad block detected"}; 1131 static const char *const errstr4_5[] = { 1132 "obsolete (address mark not found)", 1133 "no media/write protected", "aborted command", 1134 "media change requested", "id not found", "media changed", 1135 "uncorrectable data error", "interface CRC error"}; 1136 const char *const *errstr; 1137 int i; 1138 const char *sep = ""; 1139 1140 const char *devname = wd->sc_dev.dv_xname; 1141 struct ata_drive_datas *drvp = wd->drvp; 1142 int errno = wd->sc_wdc_bio.r_error; 1143 1144 if (drvp->ata_vers >= 4) 1145 errstr = errstr4_5; 1146 else 1147 errstr = errstr0_3; 1148 1149 printf("%s: (", devname); 1150 1151 if (errno == 0) 1152 printf("error not notified"); 1153 1154 for (i = 0; i < 8; i++) { 1155 if (errno & (1 << i)) { 1156 printf("%s%s", sep, errstr[i]); 1157 sep = ", "; 1158 } 1159 } 1160 printf(")\n"); 1161 } 1162 1163 int 1164 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1165 { 1166 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1167 int error = 0, s; 1168 #ifdef __HAVE_OLD_DISKLABEL 1169 struct disklabel *newlabel = NULL; 1170 #endif 1171 1172 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1173 1174 if ((wd->sc_flags & WDF_LOADED) == 0) 1175 return EIO; 1176 1177 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1178 if (error != EPASSTHROUGH) 1179 return (error); 1180 1181 switch (xfer) { 1182 #ifdef HAS_BAD144_HANDLING 1183 case DIOCSBAD: 1184 if ((flag & FWRITE) == 0) 1185 return EBADF; 1186 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1187 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1188 bad144intern(wd); 1189 return 0; 1190 #endif 1191 #ifdef WD_SOFTBADSECT 1192 case DIOCBSLIST : 1193 { 1194 u_int32_t count, missing, skip; 1195 struct disk_badsecinfo dbsi; 1196 struct disk_badsectors *dbs; 1197 size_t available; 1198 uint8_t *laddr; 1199 1200 dbsi = *(struct disk_badsecinfo *)addr; 1201 missing = wd->sc_bscount; 1202 count = 0; 1203 available = dbsi.dbsi_bufsize; 1204 skip = dbsi.dbsi_skip; 1205 laddr = (uint8_t *)dbsi.dbsi_buffer; 1206 1207 /* 1208 * We start this loop with the expectation that all of the 1209 * entries will be missed and decrement this counter each 1210 * time we either skip over one (already copied out) or 1211 * we actually copy it back to user space. The structs 1212 * holding the bad sector information are copied directly 1213 * back to user space whilst the summary is returned via 1214 * the struct passed in via the ioctl. 1215 */ 1216 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1217 if (skip > 0) { 1218 missing--; 1219 skip--; 1220 continue; 1221 } 1222 if (available < sizeof(*dbs)) 1223 break; 1224 available -= sizeof(*dbs); 1225 copyout(dbs, laddr, sizeof(*dbs)); 1226 laddr += sizeof(*dbs); 1227 missing--; 1228 count++; 1229 } 1230 dbsi.dbsi_left = missing; 1231 dbsi.dbsi_copied = count; 1232 *(struct disk_badsecinfo *)addr = dbsi; 1233 return 0; 1234 } 1235 1236 case DIOCBSFLUSH : 1237 /* Clean out the bad sector list */ 1238 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1239 void *head = SLIST_FIRST(&wd->sc_bslist); 1240 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1241 free(head, M_TEMP); 1242 } 1243 wd->sc_bscount = 0; 1244 return 0; 1245 #endif 1246 case DIOCGDINFO: 1247 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1248 return 0; 1249 #ifdef __HAVE_OLD_DISKLABEL 1250 case ODIOCGDINFO: 1251 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1252 if (newlabel == NULL) 1253 return EIO; 1254 *newlabel = *(wd->sc_dk.dk_label); 1255 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1256 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1257 else 1258 error = ENOTTY; 1259 free(newlabel, M_TEMP); 1260 return error; 1261 #endif 1262 1263 case DIOCGPART: 1264 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1265 ((struct partinfo *)addr)->part = 1266 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1267 return 0; 1268 1269 case DIOCWDINFO: 1270 case DIOCSDINFO: 1271 #ifdef __HAVE_OLD_DISKLABEL 1272 case ODIOCWDINFO: 1273 case ODIOCSDINFO: 1274 #endif 1275 { 1276 struct disklabel *lp; 1277 1278 if ((flag & FWRITE) == 0) 1279 return EBADF; 1280 1281 #ifdef __HAVE_OLD_DISKLABEL 1282 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1283 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1284 if (newlabel == NULL) 1285 return EIO; 1286 memset(newlabel, 0, sizeof newlabel); 1287 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1288 lp = newlabel; 1289 } else 1290 #endif 1291 lp = (struct disklabel *)addr; 1292 1293 mutex_enter(&wd->sc_dk.dk_openlock); 1294 wd->sc_flags |= WDF_LABELLING; 1295 1296 error = setdisklabel(wd->sc_dk.dk_label, 1297 lp, /*wd->sc_dk.dk_openmask : */0, 1298 wd->sc_dk.dk_cpulabel); 1299 if (error == 0) { 1300 if (wd->drvp->state > RESET) { 1301 s = splbio(); 1302 wd->drvp->drive_flags |= DRIVE_RESET; 1303 splx(s); 1304 } 1305 if (xfer == DIOCWDINFO 1306 #ifdef __HAVE_OLD_DISKLABEL 1307 || xfer == ODIOCWDINFO 1308 #endif 1309 ) 1310 error = writedisklabel(WDLABELDEV(dev), 1311 wdstrategy, wd->sc_dk.dk_label, 1312 wd->sc_dk.dk_cpulabel); 1313 } 1314 1315 wd->sc_flags &= ~WDF_LABELLING; 1316 mutex_exit(&wd->sc_dk.dk_openlock); 1317 #ifdef __HAVE_OLD_DISKLABEL 1318 if (newlabel != NULL) 1319 free(newlabel, M_TEMP); 1320 #endif 1321 return error; 1322 } 1323 1324 case DIOCKLABEL: 1325 if (*(int *)addr) 1326 wd->sc_flags |= WDF_KLABEL; 1327 else 1328 wd->sc_flags &= ~WDF_KLABEL; 1329 return 0; 1330 1331 case DIOCWLABEL: 1332 if ((flag & FWRITE) == 0) 1333 return EBADF; 1334 if (*(int *)addr) 1335 wd->sc_flags |= WDF_WLABEL; 1336 else 1337 wd->sc_flags &= ~WDF_WLABEL; 1338 return 0; 1339 1340 case DIOCGDEFLABEL: 1341 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1342 return 0; 1343 #ifdef __HAVE_OLD_DISKLABEL 1344 case ODIOCGDEFLABEL: 1345 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1346 if (newlabel == NULL) 1347 return EIO; 1348 wdgetdefaultlabel(wd, newlabel); 1349 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1350 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1351 else 1352 error = ENOTTY; 1353 free(newlabel, M_TEMP); 1354 return error; 1355 #endif 1356 1357 #ifdef notyet 1358 case DIOCWFORMAT: 1359 if ((flag & FWRITE) == 0) 1360 return EBADF; 1361 { 1362 register struct format_op *fop; 1363 struct iovec aiov; 1364 struct uio auio; 1365 1366 fop = (struct format_op *)addr; 1367 aiov.iov_base = fop->df_buf; 1368 aiov.iov_len = fop->df_count; 1369 auio.uio_iov = &aiov; 1370 auio.uio_iovcnt = 1; 1371 auio.uio_resid = fop->df_count; 1372 auio.uio_offset = 1373 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1374 auio.uio_vmspace = l->l_proc->p_vmspace; 1375 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1376 &auio); 1377 fop->df_count -= auio.uio_resid; 1378 fop->df_reg[0] = wdc->sc_status; 1379 fop->df_reg[1] = wdc->sc_error; 1380 return error; 1381 } 1382 #endif 1383 case DIOCGCACHE: 1384 return wd_getcache(wd, (int *)addr); 1385 1386 case DIOCSCACHE: 1387 return wd_setcache(wd, *(int *)addr); 1388 1389 case DIOCCACHESYNC: 1390 return wd_flushcache(wd, AT_WAIT); 1391 1392 case ATAIOCCOMMAND: 1393 /* 1394 * Make sure this command is (relatively) safe first 1395 */ 1396 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1397 (flag & FWRITE) == 0) 1398 return (EBADF); 1399 { 1400 struct wd_ioctl *wi; 1401 atareq_t *atareq = (atareq_t *) addr; 1402 int error1; 1403 1404 wi = wi_get(); 1405 wi->wi_softc = wd; 1406 wi->wi_atareq = *atareq; 1407 1408 if (atareq->datalen && atareq->flags & 1409 (ATACMD_READ | ATACMD_WRITE)) { 1410 void *tbuf; 1411 if (atareq->datalen < DEV_BSIZE 1412 && atareq->command == WDCC_IDENTIFY) { 1413 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1414 wi->wi_iov.iov_base = tbuf; 1415 wi->wi_iov.iov_len = DEV_BSIZE; 1416 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1417 } else { 1418 tbuf = NULL; 1419 wi->wi_iov.iov_base = atareq->databuf; 1420 wi->wi_iov.iov_len = atareq->datalen; 1421 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1422 } 1423 wi->wi_uio.uio_iov = &wi->wi_iov; 1424 wi->wi_uio.uio_iovcnt = 1; 1425 wi->wi_uio.uio_resid = atareq->datalen; 1426 wi->wi_uio.uio_offset = 0; 1427 wi->wi_uio.uio_rw = 1428 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1429 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1430 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1431 minphys, &wi->wi_uio); 1432 if (tbuf != NULL && error1 == 0) { 1433 error1 = copyout(tbuf, atareq->databuf, 1434 atareq->datalen); 1435 free(tbuf, M_TEMP); 1436 } 1437 } else { 1438 /* No need to call physio if we don't have any 1439 user data */ 1440 wi->wi_bp.b_flags = 0; 1441 wi->wi_bp.b_data = 0; 1442 wi->wi_bp.b_bcount = 0; 1443 wi->wi_bp.b_dev = 0; 1444 wi->wi_bp.b_proc = l->l_proc; 1445 wdioctlstrategy(&wi->wi_bp); 1446 error1 = wi->wi_bp.b_error; 1447 } 1448 *atareq = wi->wi_atareq; 1449 wi_free(wi); 1450 return(error1); 1451 } 1452 1453 case DIOCAWEDGE: 1454 { 1455 struct dkwedge_info *dkw = (void *) addr; 1456 1457 if ((flag & FWRITE) == 0) 1458 return (EBADF); 1459 1460 /* If the ioctl happens here, the parent is us. */ 1461 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1462 return (dkwedge_add(dkw)); 1463 } 1464 1465 case DIOCDWEDGE: 1466 { 1467 struct dkwedge_info *dkw = (void *) addr; 1468 1469 if ((flag & FWRITE) == 0) 1470 return (EBADF); 1471 1472 /* If the ioctl happens here, the parent is us. */ 1473 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1474 return (dkwedge_del(dkw)); 1475 } 1476 1477 case DIOCLWEDGES: 1478 { 1479 struct dkwedge_list *dkwl = (void *) addr; 1480 1481 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1482 } 1483 1484 case DIOCGSTRATEGY: 1485 { 1486 struct disk_strategy *dks = (void *)addr; 1487 1488 s = splbio(); 1489 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1490 sizeof(dks->dks_name)); 1491 splx(s); 1492 dks->dks_paramlen = 0; 1493 1494 return 0; 1495 } 1496 1497 case DIOCSSTRATEGY: 1498 { 1499 struct disk_strategy *dks = (void *)addr; 1500 struct bufq_state *new; 1501 struct bufq_state *old; 1502 1503 if ((flag & FWRITE) == 0) { 1504 return EBADF; 1505 } 1506 if (dks->dks_param != NULL) { 1507 return EINVAL; 1508 } 1509 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1510 error = bufq_alloc(&new, dks->dks_name, 1511 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1512 if (error) { 1513 return error; 1514 } 1515 s = splbio(); 1516 old = wd->sc_q; 1517 bufq_move(new, old); 1518 wd->sc_q = new; 1519 splx(s); 1520 bufq_free(old); 1521 1522 return 0; 1523 } 1524 1525 default: 1526 return ENOTTY; 1527 } 1528 1529 #ifdef DIAGNOSTIC 1530 panic("wdioctl: impossible"); 1531 #endif 1532 } 1533 1534 #ifdef B_FORMAT 1535 int 1536 wdformat(struct buf *bp) 1537 { 1538 1539 bp->b_flags |= B_FORMAT; 1540 return wdstrategy(bp); 1541 } 1542 #endif 1543 1544 int 1545 wdsize(dev_t dev) 1546 { 1547 struct wd_softc *wd; 1548 int part, omask; 1549 int size; 1550 1551 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1552 1553 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1554 if (wd == NULL) 1555 return (-1); 1556 1557 part = WDPART(dev); 1558 omask = wd->sc_dk.dk_openmask & (1 << part); 1559 1560 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1561 return (-1); 1562 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1563 size = -1; 1564 else 1565 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1566 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1567 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1568 return (-1); 1569 return (size); 1570 } 1571 1572 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1573 static int wddoingadump = 0; 1574 static int wddumprecalibrated = 0; 1575 1576 /* 1577 * Dump core after a system crash. 1578 */ 1579 int 1580 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1581 { 1582 struct wd_softc *wd; /* disk unit to do the I/O */ 1583 struct disklabel *lp; /* disk's disklabel */ 1584 int part, err; 1585 int nblks; /* total number of sectors left to write */ 1586 1587 /* Check if recursive dump; if so, punt. */ 1588 if (wddoingadump) 1589 return EFAULT; 1590 wddoingadump = 1; 1591 1592 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1593 if (wd == NULL) 1594 return (ENXIO); 1595 1596 part = WDPART(dev); 1597 1598 /* Convert to disk sectors. Request must be a multiple of size. */ 1599 lp = wd->sc_dk.dk_label; 1600 if ((size % lp->d_secsize) != 0) 1601 return EFAULT; 1602 nblks = size / lp->d_secsize; 1603 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1604 1605 /* Check transfer bounds against partition size. */ 1606 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1607 return EINVAL; 1608 1609 /* Offset block number to start of partition. */ 1610 blkno += lp->d_partitions[part].p_offset; 1611 1612 /* Recalibrate, if first dump transfer. */ 1613 if (wddumprecalibrated == 0) { 1614 wddumprecalibrated = 1; 1615 (*wd->atabus->ata_reset_drive)(wd->drvp, 1616 AT_POLL | AT_RST_EMERG); 1617 wd->drvp->state = RESET; 1618 } 1619 1620 wd->sc_bp = NULL; 1621 wd->sc_wdc_bio.blkno = blkno; 1622 wd->sc_wdc_bio.flags = ATA_POLL; 1623 if (wd->sc_flags & WDF_LBA48 && 1624 (blkno > LBA48_THRESHOLD || 1625 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1626 wd->sc_wdc_bio.flags |= ATA_LBA48; 1627 if (wd->sc_flags & WDF_LBA) 1628 wd->sc_wdc_bio.flags |= ATA_LBA; 1629 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1630 wd->sc_wdc_bio.databuf = va; 1631 #ifndef WD_DUMP_NOT_TRUSTED 1632 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1633 case ATACMD_TRY_AGAIN: 1634 panic("wddump: try again"); 1635 break; 1636 case ATACMD_QUEUED: 1637 panic("wddump: polled command has been queued"); 1638 break; 1639 case ATACMD_COMPLETE: 1640 break; 1641 } 1642 switch(wd->sc_wdc_bio.error) { 1643 case TIMEOUT: 1644 printf("wddump: device timed out"); 1645 err = EIO; 1646 break; 1647 case ERR_DF: 1648 printf("wddump: drive fault"); 1649 err = EIO; 1650 break; 1651 case ERR_DMA: 1652 printf("wddump: DMA error"); 1653 err = EIO; 1654 break; 1655 case ERROR: 1656 printf("wddump: "); 1657 wdperror(wd); 1658 err = EIO; 1659 break; 1660 case NOERROR: 1661 err = 0; 1662 break; 1663 default: 1664 panic("wddump: unknown error type"); 1665 } 1666 if (err != 0) { 1667 printf("\n"); 1668 return err; 1669 } 1670 #else /* WD_DUMP_NOT_TRUSTED */ 1671 /* Let's just talk about this first... */ 1672 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1673 unit, va, cylin, head, sector); 1674 delay(500 * 1000); /* half a second */ 1675 #endif 1676 1677 wddoingadump = 0; 1678 return 0; 1679 } 1680 1681 #ifdef HAS_BAD144_HANDLING 1682 /* 1683 * Internalize the bad sector table. 1684 */ 1685 void 1686 bad144intern(struct wd_softc *wd) 1687 { 1688 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1689 struct disklabel *lp = wd->sc_dk.dk_label; 1690 int i = 0; 1691 1692 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1693 1694 for (; i < NBT_BAD; i++) { 1695 if (bt->bt_bad[i].bt_cyl == 0xffff) 1696 break; 1697 wd->sc_badsect[i] = 1698 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1699 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1700 (bt->bt_bad[i].bt_trksec & 0xff); 1701 } 1702 for (; i < NBT_BAD+1; i++) 1703 wd->sc_badsect[i] = -1; 1704 } 1705 #endif 1706 1707 static void 1708 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1709 { 1710 prop_dictionary_t disk_info, odisk_info, geom; 1711 const char *cp; 1712 1713 disk_info = prop_dictionary_create(); 1714 1715 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1716 cp = "ST506"; 1717 else { 1718 /* XXX Should have a case for ATA here, too. */ 1719 cp = "ESDI"; 1720 } 1721 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1722 1723 geom = prop_dictionary_create(); 1724 1725 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1726 1727 prop_dictionary_set_uint32(geom, "sector-size", 1728 DEV_BSIZE /* XXX 512? */); 1729 1730 prop_dictionary_set_uint16(geom, "sectors-per-track", 1731 wd->sc_params.atap_sectors); 1732 1733 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1734 wd->sc_params.atap_heads); 1735 1736 if (wd->sc_flags & WDF_LBA) 1737 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1738 wd->sc_capacity / 1739 (wd->sc_params.atap_heads * 1740 wd->sc_params.atap_sectors)); 1741 else 1742 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1743 wd->sc_params.atap_cylinders); 1744 1745 prop_dictionary_set(disk_info, "geometry", geom); 1746 prop_object_release(geom); 1747 1748 prop_dictionary_set(device_properties(&wd->sc_dev), 1749 "disk-info", disk_info); 1750 1751 /* 1752 * Don't release disk_info here; we keep a reference to it. 1753 * disk_detach() will release it when we go away. 1754 */ 1755 1756 odisk_info = wd->sc_dk.dk_info; 1757 wd->sc_dk.dk_info = disk_info; 1758 if (odisk_info) 1759 prop_object_release(odisk_info); 1760 } 1761 1762 int 1763 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1764 { 1765 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1766 case CMD_AGAIN: 1767 return 1; 1768 case CMD_ERR: 1769 /* 1770 * We `know' there's a drive here; just assume it's old. 1771 * This geometry is only used to read the MBR and print a 1772 * (false) attach message. 1773 */ 1774 strncpy(params->atap_model, "ST506", 1775 sizeof params->atap_model); 1776 params->atap_config = ATA_CFG_FIXED; 1777 params->atap_cylinders = 1024; 1778 params->atap_heads = 8; 1779 params->atap_sectors = 17; 1780 params->atap_multi = 1; 1781 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1782 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1783 /* FALLTHROUGH */ 1784 case CMD_OK: 1785 wd_params_to_properties(wd, params); 1786 return 0; 1787 default: 1788 panic("wd_get_params: bad return code from ata_get_params"); 1789 /* NOTREACHED */ 1790 } 1791 } 1792 1793 int 1794 wd_getcache(struct wd_softc *wd, int *bitsp) 1795 { 1796 struct ataparams params; 1797 1798 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1799 return EIO; 1800 if (params.atap_cmd_set1 == 0x0000 || 1801 params.atap_cmd_set1 == 0xffff || 1802 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1803 *bitsp = 0; 1804 return 0; 1805 } 1806 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1807 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1808 *bitsp |= DKCACHE_WRITE; 1809 1810 return 0; 1811 } 1812 1813 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1814 1815 int 1816 wd_setcache(struct wd_softc *wd, int bits) 1817 { 1818 struct ataparams params; 1819 struct ata_command ata_c; 1820 1821 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1822 return EIO; 1823 1824 if (params.atap_cmd_set1 == 0x0000 || 1825 params.atap_cmd_set1 == 0xffff || 1826 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1827 return EOPNOTSUPP; 1828 1829 if ((bits & DKCACHE_READ) == 0 || 1830 (bits & DKCACHE_SAVE) != 0) 1831 return EOPNOTSUPP; 1832 1833 memset(&ata_c, 0, sizeof(struct ata_command)); 1834 ata_c.r_command = SET_FEATURES; 1835 ata_c.r_st_bmask = 0; 1836 ata_c.r_st_pmask = 0; 1837 ata_c.timeout = 30000; /* 30s timeout */ 1838 ata_c.flags = AT_WAIT; 1839 if (bits & DKCACHE_WRITE) 1840 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1841 else 1842 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1843 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1844 printf("%s: wd_setcache command not complete\n", 1845 wd->sc_dev.dv_xname); 1846 return EIO; 1847 } 1848 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1849 char sbuf[sizeof(at_errbits) + 64]; 1850 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1851 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1852 sbuf); 1853 return EIO; 1854 } 1855 return 0; 1856 } 1857 1858 int 1859 wd_standby(struct wd_softc *wd, int flags) 1860 { 1861 struct ata_command ata_c; 1862 1863 memset(&ata_c, 0, sizeof(struct ata_command)); 1864 ata_c.r_command = WDCC_STANDBY_IMMED; 1865 ata_c.r_st_bmask = WDCS_DRDY; 1866 ata_c.r_st_pmask = WDCS_DRDY; 1867 ata_c.flags = flags; 1868 ata_c.timeout = 30000; /* 30s timeout */ 1869 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1870 printf("%s: standby immediate command didn't complete\n", 1871 wd->sc_dev.dv_xname); 1872 return EIO; 1873 } 1874 if (ata_c.flags & AT_ERROR) { 1875 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1876 return ENODEV; 1877 } 1878 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1879 char sbuf[sizeof(at_errbits) + 64]; 1880 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1881 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1882 sbuf); 1883 return EIO; 1884 } 1885 return 0; 1886 } 1887 1888 int 1889 wd_flushcache(struct wd_softc *wd, int flags) 1890 { 1891 struct ata_command ata_c; 1892 1893 /* 1894 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1895 * only ATA-2 and still support it. 1896 */ 1897 if (wd->drvp->ata_vers < 4 && 1898 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1899 wd->sc_params.atap_cmd_set2 == 0xffff)) 1900 return ENODEV; 1901 memset(&ata_c, 0, sizeof(struct ata_command)); 1902 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1903 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1904 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1905 else 1906 ata_c.r_command = WDCC_FLUSHCACHE; 1907 ata_c.r_st_bmask = WDCS_DRDY; 1908 ata_c.r_st_pmask = WDCS_DRDY; 1909 ata_c.flags = flags; 1910 ata_c.timeout = 30000; /* 30s timeout */ 1911 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1912 printf("%s: flush cache command didn't complete\n", 1913 wd->sc_dev.dv_xname); 1914 return EIO; 1915 } 1916 if (ata_c.flags & AT_ERROR) { 1917 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1918 return ENODEV; 1919 } 1920 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1921 char sbuf[sizeof(at_errbits) + 64]; 1922 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1923 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1924 sbuf); 1925 return EIO; 1926 } 1927 return 0; 1928 } 1929 1930 void 1931 wd_shutdown(void *arg) 1932 { 1933 struct wd_softc *wd = arg; 1934 wd_flushcache(wd, AT_POLL); 1935 } 1936 1937 /* 1938 * Allocate space for a ioctl queue structure. Mostly taken from 1939 * scsipi_ioctl.c 1940 */ 1941 struct wd_ioctl * 1942 wi_get(void) 1943 { 1944 struct wd_ioctl *wi; 1945 int s; 1946 1947 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1948 simple_lock_init(&wi->wi_bp.b_interlock); 1949 s = splbio(); 1950 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1951 splx(s); 1952 return (wi); 1953 } 1954 1955 /* 1956 * Free an ioctl structure and remove it from our list 1957 */ 1958 1959 void 1960 wi_free(struct wd_ioctl *wi) 1961 { 1962 int s; 1963 1964 s = splbio(); 1965 LIST_REMOVE(wi, wi_list); 1966 splx(s); 1967 free(wi, M_TEMP); 1968 } 1969 1970 /* 1971 * Find a wd_ioctl structure based on the struct buf. 1972 */ 1973 1974 struct wd_ioctl * 1975 wi_find(struct buf *bp) 1976 { 1977 struct wd_ioctl *wi; 1978 int s; 1979 1980 s = splbio(); 1981 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1982 if (bp == &wi->wi_bp) 1983 break; 1984 splx(s); 1985 return (wi); 1986 } 1987 1988 /* 1989 * Ioctl pseudo strategy routine 1990 * 1991 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1992 * happens here is: 1993 * 1994 * - wdioctl() queues a wd_ioctl structure. 1995 * 1996 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1997 * user space I/O is required. If physio() is called, physio() eventually 1998 * calls wdioctlstrategy(). 1999 * 2000 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2001 * to perform the actual command 2002 * 2003 * The reason for the use of the pseudo strategy routine is because 2004 * when doing I/O to/from user space, physio _really_ wants to be in 2005 * the loop. We could put the entire buffer into the ioctl request 2006 * structure, but that won't scale if we want to do things like download 2007 * microcode. 2008 */ 2009 2010 void 2011 wdioctlstrategy(struct buf *bp) 2012 { 2013 struct wd_ioctl *wi; 2014 struct ata_command ata_c; 2015 int error = 0; 2016 2017 wi = wi_find(bp); 2018 if (wi == NULL) { 2019 printf("wdioctlstrategy: " 2020 "No matching ioctl request found in queue\n"); 2021 error = EINVAL; 2022 goto done; 2023 } 2024 2025 memset(&ata_c, 0, sizeof(ata_c)); 2026 2027 /* 2028 * Abort if physio broke up the transfer 2029 */ 2030 2031 if (bp->b_bcount != wi->wi_atareq.datalen) { 2032 printf("physio split wd ioctl request... cannot proceed\n"); 2033 error = EIO; 2034 goto done; 2035 } 2036 2037 /* 2038 * Abort if we didn't get a buffer size that was a multiple of 2039 * our sector size (or was larger than NBBY) 2040 */ 2041 2042 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2043 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2044 (1 << NBBY)) { 2045 error = EINVAL; 2046 goto done; 2047 } 2048 2049 /* 2050 * Make sure a timeout was supplied in the ioctl request 2051 */ 2052 2053 if (wi->wi_atareq.timeout == 0) { 2054 error = EINVAL; 2055 goto done; 2056 } 2057 2058 if (wi->wi_atareq.flags & ATACMD_READ) 2059 ata_c.flags |= AT_READ; 2060 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2061 ata_c.flags |= AT_WRITE; 2062 2063 if (wi->wi_atareq.flags & ATACMD_READREG) 2064 ata_c.flags |= AT_READREG; 2065 2066 ata_c.flags |= AT_WAIT; 2067 2068 ata_c.timeout = wi->wi_atareq.timeout; 2069 ata_c.r_command = wi->wi_atareq.command; 2070 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2071 ata_c.r_cyl = wi->wi_atareq.cylinder; 2072 ata_c.r_sector = wi->wi_atareq.sec_num; 2073 ata_c.r_count = wi->wi_atareq.sec_count; 2074 ata_c.r_features = wi->wi_atareq.features; 2075 ata_c.r_st_bmask = WDCS_DRDY; 2076 ata_c.r_st_pmask = WDCS_DRDY; 2077 ata_c.data = wi->wi_bp.b_data; 2078 ata_c.bcount = wi->wi_bp.b_bcount; 2079 2080 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2081 != ATACMD_COMPLETE) { 2082 wi->wi_atareq.retsts = ATACMD_ERROR; 2083 error = EIO; 2084 goto done; 2085 } 2086 2087 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2088 if (ata_c.flags & AT_ERROR) { 2089 wi->wi_atareq.retsts = ATACMD_ERROR; 2090 wi->wi_atareq.error = ata_c.r_error; 2091 } else if (ata_c.flags & AT_DF) 2092 wi->wi_atareq.retsts = ATACMD_DF; 2093 else 2094 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2095 } else { 2096 wi->wi_atareq.retsts = ATACMD_OK; 2097 if (wi->wi_atareq.flags & ATACMD_READREG) { 2098 wi->wi_atareq.head = ata_c.r_head ; 2099 wi->wi_atareq.cylinder = ata_c.r_cyl; 2100 wi->wi_atareq.sec_num = ata_c.r_sector; 2101 wi->wi_atareq.sec_count = ata_c.r_count; 2102 wi->wi_atareq.features = ata_c.r_features; 2103 wi->wi_atareq.error = ata_c.r_error; 2104 } 2105 } 2106 2107 done: 2108 bp->b_error = error; 2109 biodone(bp); 2110 } 2111
Indexes created Mon Sep 29 21:09:56 GMT 2025