wd.c revision 1.340
1 /* $NetBSD: wd.c,v 1.340 2007/07/09 21:00:31 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.340 2007/07/09 21:00:31 ad Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/vnode.h> 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <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 bad; 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 bad; 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 bad; 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 bad: 595 bp->b_flags |= B_ERROR; 596 done: 597 /* Toss transfer; we're done early. */ 598 bp->b_resid = bp->b_bcount; 599 biodone(bp); 600 } 601 602 /* 603 * Queue a drive for I/O. 604 */ 605 void 606 wdstart(void *arg) 607 { 608 struct wd_softc *wd = arg; 609 struct buf *bp = NULL; 610 611 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 612 DEBUG_XFERS); 613 while (wd->openings > 0) { 614 615 /* Is there a buf for us ? */ 616 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 617 return; 618 619 /* 620 * Make the command. First lock the device 621 */ 622 wd->openings--; 623 624 wd->retries = 0; 625 __wdstart(wd, bp); 626 } 627 } 628 629 static void 630 wd_split_mod15_write(struct buf *bp) 631 { 632 struct buf *obp = bp->b_private; 633 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 634 635 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 636 /* 637 * Propagate the error. If this was the first half of 638 * the original transfer, make sure to account for that 639 * in the residual. 640 */ 641 if (bp->b_data == obp->b_data) 642 bp->b_resid += bp->b_bcount; 643 goto done; 644 } 645 646 /* 647 * If this was the second half of the transfer, we're all done! 648 */ 649 if (bp->b_data != obp->b_data) 650 goto done; 651 652 /* 653 * Advance the pointer to the second half and issue that command 654 * using the same opening. 655 */ 656 bp->b_flags = obp->b_flags | B_CALL; 657 bp->b_data = (char *)bp->b_data + bp->b_bcount; 658 bp->b_blkno += (bp->b_bcount / 512); 659 bp->b_rawblkno += (bp->b_bcount / 512); 660 __wdstart(sc, bp); 661 return; 662 663 done: 664 obp->b_flags |= bp->b_flags & B_ERROR; 665 obp->b_error = bp->b_error; 666 obp->b_resid = bp->b_resid; 667 putiobuf(bp); 668 biodone(obp); 669 sc->openings++; 670 /* wddone() will call wdstart() */ 671 } 672 673 void 674 __wdstart(struct wd_softc *wd, struct buf *bp) 675 { 676 677 /* 678 * Deal with the "split mod15 write" quirk. We just divide the 679 * transfer in two, doing the first half and then then second half 680 * with the same command opening. 681 * 682 * Note we MUST do this here, because we can't let insertion 683 * into the bufq cause the transfers to be re-merged. 684 */ 685 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 686 (bp->b_flags & B_READ) == 0 && 687 bp->b_bcount > 512 && 688 ((bp->b_bcount / 512) % 15) == 1)) { 689 struct buf *nbp; 690 691 /* already at splbio */ 692 nbp = getiobuf_nowait(); 693 if (__predict_false(nbp == NULL)) { 694 /* No memory -- fail the iop. */ 695 bp->b_error = ENOMEM; 696 bp->b_flags |= B_ERROR; 697 bp->b_resid = bp->b_bcount; 698 biodone(bp); 699 wd->openings++; 700 return; 701 } 702 703 nbp->b_error = 0; 704 nbp->b_proc = bp->b_proc; 705 nbp->b_vp = NULLVP; 706 nbp->b_dev = bp->b_dev; 707 708 nbp->b_bcount = bp->b_bcount / 2; 709 nbp->b_bufsize = bp->b_bcount / 2; 710 nbp->b_data = bp->b_data; 711 712 nbp->b_blkno = bp->b_blkno; 713 nbp->b_rawblkno = bp->b_rawblkno; 714 715 nbp->b_flags = bp->b_flags | B_CALL; 716 nbp->b_iodone = wd_split_mod15_write; 717 718 /* Put ptr to orig buf in b_private and use new buf */ 719 nbp->b_private = bp; 720 721 BIO_COPYPRIO(nbp, bp); 722 723 bp = nbp; 724 } 725 726 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 727 wd->sc_wdc_bio.blkdone =0; 728 wd->sc_bp = bp; 729 /* 730 * If we're retrying, retry in single-sector mode. This will give us 731 * the sector number of the problem, and will eventually allow the 732 * transfer to succeed. 733 */ 734 if (wd->retries >= WDIORETRIES_SINGLE) 735 wd->sc_wdc_bio.flags = ATA_SINGLE; 736 else 737 wd->sc_wdc_bio.flags = 0; 738 if (wd->sc_flags & WDF_LBA48 && 739 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 740 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 741 wd->sc_wdc_bio.flags |= ATA_LBA48; 742 if (wd->sc_flags & WDF_LBA) 743 wd->sc_wdc_bio.flags |= ATA_LBA; 744 if (bp->b_flags & B_READ) 745 wd->sc_wdc_bio.flags |= ATA_READ; 746 wd->sc_wdc_bio.bcount = bp->b_bcount; 747 wd->sc_wdc_bio.databuf = bp->b_data; 748 /* Instrumentation. */ 749 disk_busy(&wd->sc_dk); 750 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 751 case ATACMD_TRY_AGAIN: 752 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 753 break; 754 case ATACMD_QUEUED: 755 case ATACMD_COMPLETE: 756 break; 757 default: 758 panic("__wdstart: bad return code from ata_bio()"); 759 } 760 } 761 762 void 763 wddone(void *v) 764 { 765 struct wd_softc *wd = v; 766 struct buf *bp = wd->sc_bp; 767 const char *errmsg; 768 int do_perror = 0; 769 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 770 DEBUG_XFERS); 771 772 if (bp == NULL) 773 return; 774 bp->b_resid = wd->sc_wdc_bio.bcount; 775 switch (wd->sc_wdc_bio.error) { 776 case ERR_DMA: 777 errmsg = "DMA error"; 778 goto retry; 779 case ERR_DF: 780 errmsg = "device fault"; 781 goto retry; 782 case TIMEOUT: 783 errmsg = "device timeout"; 784 goto retry; 785 case ERR_RESET: 786 errmsg = "channel reset"; 787 goto retry2; 788 case ERROR: 789 /* Don't care about media change bits */ 790 if (wd->sc_wdc_bio.r_error != 0 && 791 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 792 goto noerror; 793 errmsg = "error"; 794 do_perror = 1; 795 retry: /* Just reset and retry. Can we do more ? */ 796 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 797 retry2: 798 diskerr(bp, "wd", errmsg, LOG_PRINTF, 799 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 800 if (wd->retries < WDIORETRIES) 801 printf(", retrying\n"); 802 if (do_perror) 803 wdperror(wd); 804 if (wd->retries < WDIORETRIES) { 805 wd->retries++; 806 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 807 wdrestart, wd); 808 return; 809 } 810 printf("\n"); 811 812 #ifdef WD_SOFTBADSECT 813 /* 814 * Not all errors indicate a failed block but those that do, 815 * put the block on the bad-block list for the device. Only 816 * do this for reads because the drive should do it for writes, 817 * itself, according to Manuel. 818 */ 819 if ((bp->b_flags & B_READ) && 820 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 821 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 822 struct disk_badsectors *dbs; 823 824 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 825 dbs->dbs_min = bp->b_rawblkno; 826 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 827 microtime(&dbs->dbs_failedat); 828 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 829 wd->sc_bscount++; 830 } 831 #endif 832 bp->b_flags |= B_ERROR; 833 bp->b_error = EIO; 834 break; 835 case NOERROR: 836 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 837 printf("%s: soft error (corrected)\n", 838 wd->sc_dev.dv_xname); 839 break; 840 case ERR_NODEV: 841 bp->b_flags |= B_ERROR; 842 bp->b_error = EIO; 843 break; 844 } 845 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 846 (bp->b_flags & B_READ)); 847 #if NRND > 0 848 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 849 #endif 850 /* XXX Yuck, but we don't want to increment openings in this case */ 851 if (__predict_false((bp->b_flags & B_CALL) != 0 && 852 bp->b_iodone == wd_split_mod15_write)) 853 biodone(bp); 854 else { 855 biodone(bp); 856 wd->openings++; 857 } 858 wdstart(wd); 859 } 860 861 void 862 wdrestart(void *v) 863 { 864 struct wd_softc *wd = v; 865 struct buf *bp = wd->sc_bp; 866 int s; 867 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 868 DEBUG_XFERS); 869 870 s = splbio(); 871 __wdstart(v, bp); 872 splx(s); 873 } 874 875 int 876 wdread(dev_t dev, struct uio *uio, int flags) 877 { 878 879 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 880 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 881 } 882 883 int 884 wdwrite(dev_t dev, struct uio *uio, int flags) 885 { 886 887 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 888 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 889 } 890 891 int 892 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 893 { 894 struct wd_softc *wd; 895 int part, error; 896 897 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 898 wd = device_lookup(&wd_cd, WDUNIT(dev)); 899 if (wd == NULL) 900 return (ENXIO); 901 902 if (! device_is_active(&wd->sc_dev)) 903 return (ENODEV); 904 905 part = WDPART(dev); 906 907 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 908 return (error); 909 910 /* 911 * If there are wedges, and this is not RAW_PART, then we 912 * need to fail. 913 */ 914 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 915 error = EBUSY; 916 goto bad1; 917 } 918 919 /* 920 * If this is the first open of this device, add a reference 921 * to the adapter. 922 */ 923 if (wd->sc_dk.dk_openmask == 0 && 924 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 925 goto bad1; 926 927 if (wd->sc_dk.dk_openmask != 0) { 928 /* 929 * If any partition is open, but the disk has been invalidated, 930 * disallow further opens. 931 */ 932 if ((wd->sc_flags & WDF_LOADED) == 0) { 933 error = EIO; 934 goto bad2; 935 } 936 } else { 937 if ((wd->sc_flags & WDF_LOADED) == 0) { 938 wd->sc_flags |= WDF_LOADED; 939 940 /* Load the physical device parameters. */ 941 wd_get_params(wd, AT_WAIT, &wd->sc_params); 942 943 /* Load the partition info if not already loaded. */ 944 wdgetdisklabel(wd); 945 } 946 } 947 948 /* Check that the partition exists. */ 949 if (part != RAW_PART && 950 (part >= wd->sc_dk.dk_label->d_npartitions || 951 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 952 error = ENXIO; 953 goto bad2; 954 } 955 956 /* Insure only one open at a time. */ 957 switch (fmt) { 958 case S_IFCHR: 959 wd->sc_dk.dk_copenmask |= (1 << part); 960 break; 961 case S_IFBLK: 962 wd->sc_dk.dk_bopenmask |= (1 << part); 963 break; 964 } 965 wd->sc_dk.dk_openmask = 966 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 967 968 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 969 return 0; 970 971 bad2: 972 if (wd->sc_dk.dk_openmask == 0) 973 wd->atabus->ata_delref(wd->drvp); 974 bad1: 975 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 976 return error; 977 } 978 979 int 980 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 981 { 982 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 983 int part = WDPART(dev); 984 int error; 985 986 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 987 988 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 989 return error; 990 991 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 if (wd->sc_dk.dk_openmask == 0) { 1003 wd_flushcache(wd, AT_WAIT); 1004 1005 if (! (wd->sc_flags & WDF_KLABEL)) 1006 wd->sc_flags &= ~WDF_LOADED; 1007 1008 wd->atabus->ata_delref(wd->drvp); 1009 } 1010 1011 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1012 return 0; 1013 } 1014 1015 void 1016 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1017 { 1018 1019 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1020 memset(lp, 0, sizeof(struct disklabel)); 1021 1022 lp->d_secsize = DEV_BSIZE; 1023 lp->d_ntracks = wd->sc_params.atap_heads; 1024 lp->d_nsectors = wd->sc_params.atap_sectors; 1025 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1026 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1027 wd->sc_params.atap_cylinders; 1028 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1029 1030 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1031 lp->d_type = DTYPE_ST506; 1032 else 1033 lp->d_type = DTYPE_ESDI; 1034 1035 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1036 strncpy(lp->d_packname, "fictitious", 16); 1037 if (wd->sc_capacity > UINT32_MAX) 1038 lp->d_secperunit = UINT32_MAX; 1039 else 1040 lp->d_secperunit = wd->sc_capacity; 1041 lp->d_rpm = 3600; 1042 lp->d_interleave = 1; 1043 lp->d_flags = 0; 1044 1045 lp->d_partitions[RAW_PART].p_offset = 0; 1046 lp->d_partitions[RAW_PART].p_size = 1047 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1048 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1049 lp->d_npartitions = RAW_PART + 1; 1050 1051 lp->d_magic = DISKMAGIC; 1052 lp->d_magic2 = DISKMAGIC; 1053 lp->d_checksum = dkcksum(lp); 1054 } 1055 1056 /* 1057 * Fabricate a default disk label, and try to read the correct one. 1058 */ 1059 void 1060 wdgetdisklabel(struct wd_softc *wd) 1061 { 1062 struct disklabel *lp = wd->sc_dk.dk_label; 1063 const char *errstring; 1064 int s; 1065 1066 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1067 1068 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1069 1070 wdgetdefaultlabel(wd, lp); 1071 1072 wd->sc_badsect[0] = -1; 1073 1074 if (wd->drvp->state > RESET) { 1075 s = splbio(); 1076 wd->drvp->drive_flags |= DRIVE_RESET; 1077 splx(s); 1078 } 1079 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1080 RAW_PART), wdstrategy, lp, 1081 wd->sc_dk.dk_cpulabel); 1082 if (errstring) { 1083 /* 1084 * This probably happened because the drive's default 1085 * geometry doesn't match the DOS geometry. We 1086 * assume the DOS geometry is now in the label and try 1087 * again. XXX This is a kluge. 1088 */ 1089 if (wd->drvp->state > RESET) { 1090 s = splbio(); 1091 wd->drvp->drive_flags |= DRIVE_RESET; 1092 splx(s); 1093 } 1094 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1095 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1096 } 1097 if (errstring) { 1098 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1099 return; 1100 } 1101 1102 if (wd->drvp->state > RESET) { 1103 s = splbio(); 1104 wd->drvp->drive_flags |= DRIVE_RESET; 1105 splx(s); 1106 } 1107 #ifdef HAS_BAD144_HANDLING 1108 if ((lp->d_flags & D_BADSECT) != 0) 1109 bad144intern(wd); 1110 #endif 1111 } 1112 1113 void 1114 wdperror(const struct wd_softc *wd) 1115 { 1116 static const char *const errstr0_3[] = {"address mark not found", 1117 "track 0 not found", "aborted command", "media change requested", 1118 "id not found", "media changed", "uncorrectable data error", 1119 "bad block detected"}; 1120 static const char *const errstr4_5[] = { 1121 "obsolete (address mark not found)", 1122 "no media/write protected", "aborted command", 1123 "media change requested", "id not found", "media changed", 1124 "uncorrectable data error", "interface CRC error"}; 1125 const char *const *errstr; 1126 int i; 1127 const char *sep = ""; 1128 1129 const char *devname = wd->sc_dev.dv_xname; 1130 struct ata_drive_datas *drvp = wd->drvp; 1131 int errno = wd->sc_wdc_bio.r_error; 1132 1133 if (drvp->ata_vers >= 4) 1134 errstr = errstr4_5; 1135 else 1136 errstr = errstr0_3; 1137 1138 printf("%s: (", devname); 1139 1140 if (errno == 0) 1141 printf("error not notified"); 1142 1143 for (i = 0; i < 8; i++) { 1144 if (errno & (1 << i)) { 1145 printf("%s%s", sep, errstr[i]); 1146 sep = ", "; 1147 } 1148 } 1149 printf(")\n"); 1150 } 1151 1152 int 1153 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1154 { 1155 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1156 int error = 0, s; 1157 #ifdef __HAVE_OLD_DISKLABEL 1158 struct disklabel *newlabel = NULL; 1159 #endif 1160 1161 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1162 1163 if ((wd->sc_flags & WDF_LOADED) == 0) 1164 return EIO; 1165 1166 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1167 if (error != EPASSTHROUGH) 1168 return (error); 1169 1170 switch (xfer) { 1171 #ifdef HAS_BAD144_HANDLING 1172 case DIOCSBAD: 1173 if ((flag & FWRITE) == 0) 1174 return EBADF; 1175 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1176 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1177 bad144intern(wd); 1178 return 0; 1179 #endif 1180 #ifdef WD_SOFTBADSECT 1181 case DIOCBSLIST : 1182 { 1183 u_int32_t count, missing, skip; 1184 struct disk_badsecinfo dbsi; 1185 struct disk_badsectors *dbs; 1186 size_t available; 1187 void *laddr; 1188 1189 dbsi = *(struct disk_badsecinfo *)addr; 1190 missing = wd->sc_bscount; 1191 count = 0; 1192 available = dbsi.dbsi_bufsize; 1193 skip = dbsi.dbsi_skip; 1194 laddr = dbsi.dbsi_buffer; 1195 1196 /* 1197 * We start this loop with the expectation that all of the 1198 * entries will be missed and decrement this counter each 1199 * time we either skip over one (already copied out) or 1200 * we actually copy it back to user space. The structs 1201 * holding the bad sector information are copied directly 1202 * back to user space whilst the summary is returned via 1203 * the struct passed in via the ioctl. 1204 */ 1205 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1206 if (skip > 0) { 1207 missing--; 1208 skip--; 1209 continue; 1210 } 1211 if (available < sizeof(*dbs)) 1212 break; 1213 available -= sizeof(*dbs); 1214 copyout(dbs, laddr, sizeof(*dbs)); 1215 laddr += sizeof(*dbs); 1216 missing--; 1217 count++; 1218 } 1219 dbsi.dbsi_left = missing; 1220 dbsi.dbsi_copied = count; 1221 *(struct disk_badsecinfo *)addr = dbsi; 1222 return 0; 1223 } 1224 1225 case DIOCBSFLUSH : 1226 /* Clean out the bad sector list */ 1227 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1228 void *head = SLIST_FIRST(&wd->sc_bslist); 1229 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1230 free(head, M_TEMP); 1231 } 1232 wd->sc_bscount = 0; 1233 return 0; 1234 #endif 1235 case DIOCGDINFO: 1236 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1237 return 0; 1238 #ifdef __HAVE_OLD_DISKLABEL 1239 case ODIOCGDINFO: 1240 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1241 if (newlabel == NULL) 1242 return EIO; 1243 *newlabel = *(wd->sc_dk.dk_label); 1244 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1245 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1246 else 1247 error = ENOTTY; 1248 free(newlabel, M_TEMP); 1249 return error; 1250 #endif 1251 1252 case DIOCGPART: 1253 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1254 ((struct partinfo *)addr)->part = 1255 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1256 return 0; 1257 1258 case DIOCWDINFO: 1259 case DIOCSDINFO: 1260 #ifdef __HAVE_OLD_DISKLABEL 1261 case ODIOCWDINFO: 1262 case ODIOCSDINFO: 1263 #endif 1264 { 1265 struct disklabel *lp; 1266 1267 if ((flag & FWRITE) == 0) 1268 return EBADF; 1269 1270 #ifdef __HAVE_OLD_DISKLABEL 1271 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1272 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1273 if (newlabel == NULL) 1274 return EIO; 1275 memset(newlabel, 0, sizeof newlabel); 1276 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1277 lp = newlabel; 1278 } else 1279 #endif 1280 lp = (struct disklabel *)addr; 1281 1282 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1283 NULL)) != 0) 1284 goto bad; 1285 wd->sc_flags |= WDF_LABELLING; 1286 1287 error = setdisklabel(wd->sc_dk.dk_label, 1288 lp, /*wd->sc_dk.dk_openmask : */0, 1289 wd->sc_dk.dk_cpulabel); 1290 if (error == 0) { 1291 if (wd->drvp->state > RESET) { 1292 s = splbio(); 1293 wd->drvp->drive_flags |= DRIVE_RESET; 1294 splx(s); 1295 } 1296 if (xfer == DIOCWDINFO 1297 #ifdef __HAVE_OLD_DISKLABEL 1298 || xfer == ODIOCWDINFO 1299 #endif 1300 ) 1301 error = writedisklabel(WDLABELDEV(dev), 1302 wdstrategy, wd->sc_dk.dk_label, 1303 wd->sc_dk.dk_cpulabel); 1304 } 1305 1306 wd->sc_flags &= ~WDF_LABELLING; 1307 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1308 bad: 1309 #ifdef __HAVE_OLD_DISKLABEL 1310 if (newlabel != NULL) 1311 free(newlabel, M_TEMP); 1312 #endif 1313 return error; 1314 } 1315 1316 case DIOCKLABEL: 1317 if (*(int *)addr) 1318 wd->sc_flags |= WDF_KLABEL; 1319 else 1320 wd->sc_flags &= ~WDF_KLABEL; 1321 return 0; 1322 1323 case DIOCWLABEL: 1324 if ((flag & FWRITE) == 0) 1325 return EBADF; 1326 if (*(int *)addr) 1327 wd->sc_flags |= WDF_WLABEL; 1328 else 1329 wd->sc_flags &= ~WDF_WLABEL; 1330 return 0; 1331 1332 case DIOCGDEFLABEL: 1333 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1334 return 0; 1335 #ifdef __HAVE_OLD_DISKLABEL 1336 case ODIOCGDEFLABEL: 1337 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1338 if (newlabel == NULL) 1339 return EIO; 1340 wdgetdefaultlabel(wd, newlabel); 1341 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1342 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1343 else 1344 error = ENOTTY; 1345 free(newlabel, M_TEMP); 1346 return error; 1347 #endif 1348 1349 #ifdef notyet 1350 case DIOCWFORMAT: 1351 if ((flag & FWRITE) == 0) 1352 return EBADF; 1353 { 1354 register struct format_op *fop; 1355 struct iovec aiov; 1356 struct uio auio; 1357 1358 fop = (struct format_op *)addr; 1359 aiov.iov_base = fop->df_buf; 1360 aiov.iov_len = fop->df_count; 1361 auio.uio_iov = &aiov; 1362 auio.uio_iovcnt = 1; 1363 auio.uio_resid = fop->df_count; 1364 auio.uio_offset = 1365 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1366 auio.uio_vmspace = l->l_proc->p_vmspace; 1367 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1368 &auio); 1369 fop->df_count -= auio.uio_resid; 1370 fop->df_reg[0] = wdc->sc_status; 1371 fop->df_reg[1] = wdc->sc_error; 1372 return error; 1373 } 1374 #endif 1375 case DIOCGCACHE: 1376 return wd_getcache(wd, (int *)addr); 1377 1378 case DIOCSCACHE: 1379 return wd_setcache(wd, *(int *)addr); 1380 1381 case DIOCCACHESYNC: 1382 return wd_flushcache(wd, AT_WAIT); 1383 1384 case ATAIOCCOMMAND: 1385 /* 1386 * Make sure this command is (relatively) safe first 1387 */ 1388 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1389 (flag & FWRITE) == 0) 1390 return (EBADF); 1391 { 1392 struct wd_ioctl *wi; 1393 atareq_t *atareq = (atareq_t *) addr; 1394 int error1; 1395 1396 wi = wi_get(); 1397 wi->wi_softc = wd; 1398 wi->wi_atareq = *atareq; 1399 1400 if (atareq->datalen && atareq->flags & 1401 (ATACMD_READ | ATACMD_WRITE)) { 1402 void *tbuf; 1403 if (atareq->datalen < DEV_BSIZE 1404 && atareq->command == WDCC_IDENTIFY) { 1405 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1406 wi->wi_iov.iov_base = tbuf; 1407 wi->wi_iov.iov_len = DEV_BSIZE; 1408 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1409 } else { 1410 tbuf = NULL; 1411 wi->wi_iov.iov_base = atareq->databuf; 1412 wi->wi_iov.iov_len = atareq->datalen; 1413 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1414 } 1415 wi->wi_uio.uio_iov = &wi->wi_iov; 1416 wi->wi_uio.uio_iovcnt = 1; 1417 wi->wi_uio.uio_resid = atareq->datalen; 1418 wi->wi_uio.uio_offset = 0; 1419 wi->wi_uio.uio_rw = 1420 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1421 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1422 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1423 minphys, &wi->wi_uio); 1424 if (tbuf != NULL && error1 == 0) { 1425 error1 = copyout(tbuf, atareq->databuf, 1426 atareq->datalen); 1427 free(tbuf, M_TEMP); 1428 } 1429 } else { 1430 /* No need to call physio if we don't have any 1431 user data */ 1432 wi->wi_bp.b_flags = 0; 1433 wi->wi_bp.b_data = 0; 1434 wi->wi_bp.b_bcount = 0; 1435 wi->wi_bp.b_dev = 0; 1436 wi->wi_bp.b_proc = l->l_proc; 1437 wdioctlstrategy(&wi->wi_bp); 1438 error1 = wi->wi_bp.b_error; 1439 } 1440 *atareq = wi->wi_atareq; 1441 wi_free(wi); 1442 return(error1); 1443 } 1444 1445 case DIOCAWEDGE: 1446 { 1447 struct dkwedge_info *dkw = (void *) addr; 1448 1449 if ((flag & FWRITE) == 0) 1450 return (EBADF); 1451 1452 /* If the ioctl happens here, the parent is us. */ 1453 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1454 return (dkwedge_add(dkw)); 1455 } 1456 1457 case DIOCDWEDGE: 1458 { 1459 struct dkwedge_info *dkw = (void *) addr; 1460 1461 if ((flag & FWRITE) == 0) 1462 return (EBADF); 1463 1464 /* If the ioctl happens here, the parent is us. */ 1465 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1466 return (dkwedge_del(dkw)); 1467 } 1468 1469 case DIOCLWEDGES: 1470 { 1471 struct dkwedge_list *dkwl = (void *) addr; 1472 1473 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1474 } 1475 1476 case DIOCGSTRATEGY: 1477 { 1478 struct disk_strategy *dks = (void *)addr; 1479 1480 s = splbio(); 1481 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1482 sizeof(dks->dks_name)); 1483 splx(s); 1484 dks->dks_paramlen = 0; 1485 1486 return 0; 1487 } 1488 1489 case DIOCSSTRATEGY: 1490 { 1491 struct disk_strategy *dks = (void *)addr; 1492 struct bufq_state *new; 1493 struct bufq_state *old; 1494 1495 if ((flag & FWRITE) == 0) { 1496 return EBADF; 1497 } 1498 if (dks->dks_param != NULL) { 1499 return EINVAL; 1500 } 1501 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1502 error = bufq_alloc(&new, dks->dks_name, 1503 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1504 if (error) { 1505 return error; 1506 } 1507 s = splbio(); 1508 old = wd->sc_q; 1509 bufq_move(new, old); 1510 wd->sc_q = new; 1511 splx(s); 1512 bufq_free(old); 1513 1514 return 0; 1515 } 1516 1517 default: 1518 return ENOTTY; 1519 } 1520 1521 #ifdef DIAGNOSTIC 1522 panic("wdioctl: impossible"); 1523 #endif 1524 } 1525 1526 #ifdef B_FORMAT 1527 int 1528 wdformat(struct buf *bp) 1529 { 1530 1531 bp->b_flags |= B_FORMAT; 1532 return wdstrategy(bp); 1533 } 1534 #endif 1535 1536 int 1537 wdsize(dev_t dev) 1538 { 1539 struct wd_softc *wd; 1540 int part, omask; 1541 int size; 1542 1543 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1544 1545 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1546 if (wd == NULL) 1547 return (-1); 1548 1549 part = WDPART(dev); 1550 omask = wd->sc_dk.dk_openmask & (1 << part); 1551 1552 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1553 return (-1); 1554 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1555 size = -1; 1556 else 1557 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1558 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1559 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1560 return (-1); 1561 return (size); 1562 } 1563 1564 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1565 static int wddoingadump = 0; 1566 static int wddumprecalibrated = 0; 1567 1568 /* 1569 * Dump core after a system crash. 1570 */ 1571 int 1572 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1573 { 1574 struct wd_softc *wd; /* disk unit to do the I/O */ 1575 struct disklabel *lp; /* disk's disklabel */ 1576 int part, err; 1577 int nblks; /* total number of sectors left to write */ 1578 1579 /* Check if recursive dump; if so, punt. */ 1580 if (wddoingadump) 1581 return EFAULT; 1582 wddoingadump = 1; 1583 1584 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1585 if (wd == NULL) 1586 return (ENXIO); 1587 1588 part = WDPART(dev); 1589 1590 /* Convert to disk sectors. Request must be a multiple of size. */ 1591 lp = wd->sc_dk.dk_label; 1592 if ((size % lp->d_secsize) != 0) 1593 return EFAULT; 1594 nblks = size / lp->d_secsize; 1595 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1596 1597 /* Check transfer bounds against partition size. */ 1598 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1599 return EINVAL; 1600 1601 /* Offset block number to start of partition. */ 1602 blkno += lp->d_partitions[part].p_offset; 1603 1604 /* Recalibrate, if first dump transfer. */ 1605 if (wddumprecalibrated == 0) { 1606 wddumprecalibrated = 1; 1607 (*wd->atabus->ata_reset_drive)(wd->drvp, 1608 AT_POLL | AT_RST_EMERG); 1609 wd->drvp->state = RESET; 1610 } 1611 1612 wd->sc_bp = NULL; 1613 wd->sc_wdc_bio.blkno = blkno; 1614 wd->sc_wdc_bio.flags = ATA_POLL; 1615 if (wd->sc_flags & WDF_LBA48 && 1616 (blkno > LBA48_THRESHOLD || 1617 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1618 wd->sc_wdc_bio.flags |= ATA_LBA48; 1619 if (wd->sc_flags & WDF_LBA) 1620 wd->sc_wdc_bio.flags |= ATA_LBA; 1621 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1622 wd->sc_wdc_bio.databuf = va; 1623 #ifndef WD_DUMP_NOT_TRUSTED 1624 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1625 case ATACMD_TRY_AGAIN: 1626 panic("wddump: try again"); 1627 break; 1628 case ATACMD_QUEUED: 1629 panic("wddump: polled command has been queued"); 1630 break; 1631 case ATACMD_COMPLETE: 1632 break; 1633 } 1634 switch(wd->sc_wdc_bio.error) { 1635 case TIMEOUT: 1636 printf("wddump: device timed out"); 1637 err = EIO; 1638 break; 1639 case ERR_DF: 1640 printf("wddump: drive fault"); 1641 err = EIO; 1642 break; 1643 case ERR_DMA: 1644 printf("wddump: DMA error"); 1645 err = EIO; 1646 break; 1647 case ERROR: 1648 printf("wddump: "); 1649 wdperror(wd); 1650 err = EIO; 1651 break; 1652 case NOERROR: 1653 err = 0; 1654 break; 1655 default: 1656 panic("wddump: unknown error type"); 1657 } 1658 if (err != 0) { 1659 printf("\n"); 1660 return err; 1661 } 1662 #else /* WD_DUMP_NOT_TRUSTED */ 1663 /* Let's just talk about this first... */ 1664 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1665 unit, va, cylin, head, sector); 1666 delay(500 * 1000); /* half a second */ 1667 #endif 1668 1669 wddoingadump = 0; 1670 return 0; 1671 } 1672 1673 #ifdef HAS_BAD144_HANDLING 1674 /* 1675 * Internalize the bad sector table. 1676 */ 1677 void 1678 bad144intern(struct wd_softc *wd) 1679 { 1680 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1681 struct disklabel *lp = wd->sc_dk.dk_label; 1682 int i = 0; 1683 1684 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1685 1686 for (; i < NBT_BAD; i++) { 1687 if (bt->bt_bad[i].bt_cyl == 0xffff) 1688 break; 1689 wd->sc_badsect[i] = 1690 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1691 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1692 (bt->bt_bad[i].bt_trksec & 0xff); 1693 } 1694 for (; i < NBT_BAD+1; i++) 1695 wd->sc_badsect[i] = -1; 1696 } 1697 #endif 1698 1699 static void 1700 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1701 { 1702 prop_dictionary_t disk_info, odisk_info, geom; 1703 const char *cp; 1704 1705 disk_info = prop_dictionary_create(); 1706 1707 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1708 cp = "ST506"; 1709 else { 1710 /* XXX Should have a case for ATA here, too. */ 1711 cp = "ESDI"; 1712 } 1713 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1714 1715 geom = prop_dictionary_create(); 1716 1717 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1718 1719 prop_dictionary_set_uint32(geom, "sector-size", 1720 DEV_BSIZE /* XXX 512? */); 1721 1722 prop_dictionary_set_uint16(geom, "sectors-per-track", 1723 wd->sc_params.atap_sectors); 1724 1725 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1726 wd->sc_params.atap_heads); 1727 1728 if (wd->sc_flags & WDF_LBA) 1729 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1730 wd->sc_capacity / 1731 (wd->sc_params.atap_heads * 1732 wd->sc_params.atap_sectors)); 1733 else 1734 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1735 wd->sc_params.atap_cylinders); 1736 1737 prop_dictionary_set(disk_info, "geometry", geom); 1738 prop_object_release(geom); 1739 1740 prop_dictionary_set(device_properties(&wd->sc_dev), 1741 "disk-info", disk_info); 1742 1743 /* 1744 * Don't release disk_info here; we keep a reference to it. 1745 * disk_detach() will release it when we go away. 1746 */ 1747 1748 odisk_info = wd->sc_dk.dk_info; 1749 wd->sc_dk.dk_info = disk_info; 1750 if (odisk_info) 1751 prop_object_release(odisk_info); 1752 } 1753 1754 int 1755 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1756 { 1757 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1758 case CMD_AGAIN: 1759 return 1; 1760 case CMD_ERR: 1761 /* 1762 * We `know' there's a drive here; just assume it's old. 1763 * This geometry is only used to read the MBR and print a 1764 * (false) attach message. 1765 */ 1766 strncpy(params->atap_model, "ST506", 1767 sizeof params->atap_model); 1768 params->atap_config = ATA_CFG_FIXED; 1769 params->atap_cylinders = 1024; 1770 params->atap_heads = 8; 1771 params->atap_sectors = 17; 1772 params->atap_multi = 1; 1773 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1774 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1775 /* FALLTHROUGH */ 1776 case CMD_OK: 1777 wd_params_to_properties(wd, params); 1778 return 0; 1779 default: 1780 panic("wd_get_params: bad return code from ata_get_params"); 1781 /* NOTREACHED */ 1782 } 1783 } 1784 1785 int 1786 wd_getcache(struct wd_softc *wd, int *bitsp) 1787 { 1788 struct ataparams params; 1789 1790 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1791 return EIO; 1792 if (params.atap_cmd_set1 == 0x0000 || 1793 params.atap_cmd_set1 == 0xffff || 1794 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1795 *bitsp = 0; 1796 return 0; 1797 } 1798 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1799 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1800 *bitsp |= DKCACHE_WRITE; 1801 1802 return 0; 1803 } 1804 1805 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1806 1807 int 1808 wd_setcache(struct wd_softc *wd, int bits) 1809 { 1810 struct ataparams params; 1811 struct ata_command ata_c; 1812 1813 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1814 return EIO; 1815 1816 if (params.atap_cmd_set1 == 0x0000 || 1817 params.atap_cmd_set1 == 0xffff || 1818 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1819 return EOPNOTSUPP; 1820 1821 if ((bits & DKCACHE_READ) == 0 || 1822 (bits & DKCACHE_SAVE) != 0) 1823 return EOPNOTSUPP; 1824 1825 memset(&ata_c, 0, sizeof(struct ata_command)); 1826 ata_c.r_command = SET_FEATURES; 1827 ata_c.r_st_bmask = 0; 1828 ata_c.r_st_pmask = 0; 1829 ata_c.timeout = 30000; /* 30s timeout */ 1830 ata_c.flags = AT_WAIT; 1831 if (bits & DKCACHE_WRITE) 1832 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1833 else 1834 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1835 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1836 printf("%s: wd_setcache command not complete\n", 1837 wd->sc_dev.dv_xname); 1838 return EIO; 1839 } 1840 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1841 char sbuf[sizeof(at_errbits) + 64]; 1842 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1843 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1844 sbuf); 1845 return EIO; 1846 } 1847 return 0; 1848 } 1849 1850 int 1851 wd_standby(struct wd_softc *wd, int flags) 1852 { 1853 struct ata_command ata_c; 1854 1855 memset(&ata_c, 0, sizeof(struct ata_command)); 1856 ata_c.r_command = WDCC_STANDBY_IMMED; 1857 ata_c.r_st_bmask = WDCS_DRDY; 1858 ata_c.r_st_pmask = WDCS_DRDY; 1859 ata_c.flags = flags; 1860 ata_c.timeout = 30000; /* 30s timeout */ 1861 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1862 printf("%s: standby immediate command didn't complete\n", 1863 wd->sc_dev.dv_xname); 1864 return EIO; 1865 } 1866 if (ata_c.flags & AT_ERROR) { 1867 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1868 return ENODEV; 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_standby: status=%s\n", wd->sc_dev.dv_xname, 1874 sbuf); 1875 return EIO; 1876 } 1877 return 0; 1878 } 1879 1880 int 1881 wd_flushcache(struct wd_softc *wd, int flags) 1882 { 1883 struct ata_command ata_c; 1884 1885 /* 1886 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1887 * only ATA-2 and still support it. 1888 */ 1889 if (wd->drvp->ata_vers < 4 && 1890 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1891 wd->sc_params.atap_cmd_set2 == 0xffff)) 1892 return ENODEV; 1893 memset(&ata_c, 0, sizeof(struct ata_command)); 1894 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1895 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1896 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1897 else 1898 ata_c.r_command = WDCC_FLUSHCACHE; 1899 ata_c.r_st_bmask = WDCS_DRDY; 1900 ata_c.r_st_pmask = WDCS_DRDY; 1901 ata_c.flags = flags; 1902 ata_c.timeout = 30000; /* 30s timeout */ 1903 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1904 printf("%s: flush cache command didn't complete\n", 1905 wd->sc_dev.dv_xname); 1906 return EIO; 1907 } 1908 if (ata_c.flags & AT_ERROR) { 1909 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1910 return ENODEV; 1911 } 1912 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1913 char sbuf[sizeof(at_errbits) + 64]; 1914 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1915 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1916 sbuf); 1917 return EIO; 1918 } 1919 return 0; 1920 } 1921 1922 void 1923 wd_shutdown(void *arg) 1924 { 1925 struct wd_softc *wd = arg; 1926 wd_flushcache(wd, AT_POLL); 1927 } 1928 1929 /* 1930 * Allocate space for a ioctl queue structure. Mostly taken from 1931 * scsipi_ioctl.c 1932 */ 1933 struct wd_ioctl * 1934 wi_get(void) 1935 { 1936 struct wd_ioctl *wi; 1937 int s; 1938 1939 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1940 simple_lock_init(&wi->wi_bp.b_interlock); 1941 s = splbio(); 1942 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1943 splx(s); 1944 return (wi); 1945 } 1946 1947 /* 1948 * Free an ioctl structure and remove it from our list 1949 */ 1950 1951 void 1952 wi_free(struct wd_ioctl *wi) 1953 { 1954 int s; 1955 1956 s = splbio(); 1957 LIST_REMOVE(wi, wi_list); 1958 splx(s); 1959 free(wi, M_TEMP); 1960 } 1961 1962 /* 1963 * Find a wd_ioctl structure based on the struct buf. 1964 */ 1965 1966 struct wd_ioctl * 1967 wi_find(struct buf *bp) 1968 { 1969 struct wd_ioctl *wi; 1970 int s; 1971 1972 s = splbio(); 1973 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1974 if (bp == &wi->wi_bp) 1975 break; 1976 splx(s); 1977 return (wi); 1978 } 1979 1980 /* 1981 * Ioctl pseudo strategy routine 1982 * 1983 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1984 * happens here is: 1985 * 1986 * - wdioctl() queues a wd_ioctl structure. 1987 * 1988 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1989 * user space I/O is required. If physio() is called, physio() eventually 1990 * calls wdioctlstrategy(). 1991 * 1992 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1993 * to perform the actual command 1994 * 1995 * The reason for the use of the pseudo strategy routine is because 1996 * when doing I/O to/from user space, physio _really_ wants to be in 1997 * the loop. We could put the entire buffer into the ioctl request 1998 * structure, but that won't scale if we want to do things like download 1999 * microcode. 2000 */ 2001 2002 void 2003 wdioctlstrategy(struct buf *bp) 2004 { 2005 struct wd_ioctl *wi; 2006 struct ata_command ata_c; 2007 int error = 0; 2008 2009 wi = wi_find(bp); 2010 if (wi == NULL) { 2011 printf("wdioctlstrategy: " 2012 "No matching ioctl request found in queue\n"); 2013 error = EINVAL; 2014 goto bad; 2015 } 2016 2017 memset(&ata_c, 0, sizeof(ata_c)); 2018 2019 /* 2020 * Abort if physio broke up the transfer 2021 */ 2022 2023 if (bp->b_bcount != wi->wi_atareq.datalen) { 2024 printf("physio split wd ioctl request... cannot proceed\n"); 2025 error = EIO; 2026 goto bad; 2027 } 2028 2029 /* 2030 * Abort if we didn't get a buffer size that was a multiple of 2031 * our sector size (or was larger than NBBY) 2032 */ 2033 2034 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2035 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2036 (1 << NBBY)) { 2037 error = EINVAL; 2038 goto bad; 2039 } 2040 2041 /* 2042 * Make sure a timeout was supplied in the ioctl request 2043 */ 2044 2045 if (wi->wi_atareq.timeout == 0) { 2046 error = EINVAL; 2047 goto bad; 2048 } 2049 2050 if (wi->wi_atareq.flags & ATACMD_READ) 2051 ata_c.flags |= AT_READ; 2052 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2053 ata_c.flags |= AT_WRITE; 2054 2055 if (wi->wi_atareq.flags & ATACMD_READREG) 2056 ata_c.flags |= AT_READREG; 2057 2058 ata_c.flags |= AT_WAIT; 2059 2060 ata_c.timeout = wi->wi_atareq.timeout; 2061 ata_c.r_command = wi->wi_atareq.command; 2062 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2063 ata_c.r_cyl = wi->wi_atareq.cylinder; 2064 ata_c.r_sector = wi->wi_atareq.sec_num; 2065 ata_c.r_count = wi->wi_atareq.sec_count; 2066 ata_c.r_features = wi->wi_atareq.features; 2067 ata_c.r_st_bmask = WDCS_DRDY; 2068 ata_c.r_st_pmask = WDCS_DRDY; 2069 ata_c.data = wi->wi_bp.b_data; 2070 ata_c.bcount = wi->wi_bp.b_bcount; 2071 2072 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2073 != ATACMD_COMPLETE) { 2074 wi->wi_atareq.retsts = ATACMD_ERROR; 2075 goto bad; 2076 } 2077 2078 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2079 if (ata_c.flags & AT_ERROR) { 2080 wi->wi_atareq.retsts = ATACMD_ERROR; 2081 wi->wi_atareq.error = ata_c.r_error; 2082 } else if (ata_c.flags & AT_DF) 2083 wi->wi_atareq.retsts = ATACMD_DF; 2084 else 2085 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2086 } else { 2087 wi->wi_atareq.retsts = ATACMD_OK; 2088 if (wi->wi_atareq.flags & ATACMD_READREG) { 2089 wi->wi_atareq.head = ata_c.r_head ; 2090 wi->wi_atareq.cylinder = ata_c.r_cyl; 2091 wi->wi_atareq.sec_num = ata_c.r_sector; 2092 wi->wi_atareq.sec_count = ata_c.r_count; 2093 wi->wi_atareq.features = ata_c.r_features; 2094 wi->wi_atareq.error = ata_c.r_error; 2095 } 2096 } 2097 2098 bp->b_error = 0; 2099 biodone(bp); 2100 return; 2101 bad: 2102 bp->b_flags |= B_ERROR; 2103 bp->b_error = error; 2104 biodone(bp); 2105 } 2106
Indexes created Sun Sep 28 16:09:52 GMT 2025