wd.c revision 1.352
1 /* $NetBSD: wd.c,v 1.352 2007/12/11 01:52:18 jmcneill 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 1.352 2007/12/11 01:52:18 jmcneill Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/vnode.h> 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <sys/intr.h> 97 #include <sys/bus.h> 98 99 #include <dev/ata/atareg.h> 100 #include <dev/ata/atavar.h> 101 #include <dev/ata/wdvar.h> 102 #include <dev/ic/wdcreg.h> 103 #include <sys/ataio.h> 104 #include "locators.h" 105 106 #include <prop/proplib.h> 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 static bool wd_suspend(device_t); 143 144 CFATTACH_DECL(wd, sizeof(struct wd_softc), 145 wdprobe, wdattach, wddetach, wdactivate); 146 147 extern struct cfdriver wd_cd; 148 149 dev_type_open(wdopen); 150 dev_type_close(wdclose); 151 dev_type_read(wdread); 152 dev_type_write(wdwrite); 153 dev_type_ioctl(wdioctl); 154 dev_type_strategy(wdstrategy); 155 dev_type_dump(wddump); 156 dev_type_size(wdsize); 157 158 const struct bdevsw wd_bdevsw = { 159 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 160 }; 161 162 const struct cdevsw wd_cdevsw = { 163 wdopen, wdclose, wdread, wdwrite, wdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 /* 168 * Glue necessary to hook WDCIOCCOMMAND into physio 169 */ 170 171 struct wd_ioctl { 172 LIST_ENTRY(wd_ioctl) wi_list; 173 struct buf wi_bp; 174 struct uio wi_uio; 175 struct iovec wi_iov; 176 atareq_t wi_atareq; 177 struct wd_softc *wi_softc; 178 }; 179 180 LIST_HEAD(, wd_ioctl) wi_head; 181 182 struct wd_ioctl *wi_find(struct buf *); 183 void wi_free(struct wd_ioctl *); 184 struct wd_ioctl *wi_get(void); 185 void wdioctlstrategy(struct buf *); 186 187 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 188 void wdgetdisklabel(struct wd_softc *); 189 void wdstart(void *); 190 void __wdstart(struct wd_softc*, struct buf *); 191 void wdrestart(void *); 192 void wddone(void *); 193 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 194 static int wd_standby(struct wd_softc *, int); 195 int wd_flushcache(struct wd_softc *, int); 196 197 int wd_getcache(struct wd_softc *, int *); 198 int wd_setcache(struct wd_softc *, int); 199 200 struct dkdriver wddkdriver = { wdstrategy, minphys }; 201 202 #ifdef HAS_BAD144_HANDLING 203 static void bad144intern(struct wd_softc *); 204 #endif 205 206 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 207 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 208 209 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 210 211 /* 212 * Quirk table for IDE drives. Put more-specific matches first, since 213 * a simple globbing routine is used for matching. 214 */ 215 static const struct wd_quirk { 216 const char *wdq_match; /* inquiry pattern to match */ 217 int wdq_quirks; /* drive quirks */ 218 } wd_quirk_table[] = { 219 /* 220 * Some Seagate S-ATA drives have a PHY which can get confused 221 * with the way data is packetized by some S-ATA controllers. 222 * 223 * The work-around is to split in two any write transfer whose 224 * sector count % 15 == 1 (assuming 512 byte sectors). 225 * 226 * XXX This is an incomplete list. There are at least a couple 227 * XXX more model numbers. If you have trouble with such transfers 228 * XXX (8K is the most common) on Seagate S-ATA drives, please 229 * XXX notify thorpej (at) NetBSD.org. 230 */ 231 { "ST3120023AS", 232 WD_QUIRK_SPLIT_MOD15_WRITE }, 233 { "ST380023AS", 234 WD_QUIRK_SPLIT_MOD15_WRITE }, 235 236 /* 237 * These seagate drives seems to have issue addressing sector 0xfffffff 238 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 239 * LBA48 240 * Note that we can't just change the code to always use LBA48 for 241 * sector 0xfffffff, because this would break valid and working 242 * setups using LBA48 drives on non-LBA48-capable controllers 243 * (and it's hard to get a list of such controllers) 244 */ 245 { "ST3160021A*", 246 WD_QUIRK_FORCE_LBA48 }, 247 { "ST3160811A*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { "ST3160812A*", 250 WD_QUIRK_FORCE_LBA48 }, 251 { "ST3160023A*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { "ST3160827A*", 254 WD_QUIRK_FORCE_LBA48 }, 255 /* Attempt to catch all seagate drives larger than 200GB */ 256 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 257 WD_QUIRK_FORCE_LBA48 }, 258 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 259 WD_QUIRK_FORCE_LBA48 }, 260 { NULL, 261 0 } 262 }; 263 264 static const struct wd_quirk * 265 wd_lookup_quirks(const char *name) 266 { 267 const struct wd_quirk *wdq; 268 const char *estr; 269 270 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 271 /* 272 * We only want exact matches (which include matches 273 * against globbing characters). 274 */ 275 if (pmatch(name, wdq->wdq_match, &estr) == 2) 276 return (wdq); 277 } 278 return (NULL); 279 } 280 281 int 282 wdprobe(struct device *parent, struct cfdata *match, void *aux) 283 { 284 struct ata_device *adev = aux; 285 286 if (adev == NULL) 287 return 0; 288 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 289 return 0; 290 291 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 292 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 293 return 0; 294 return 1; 295 } 296 297 void 298 wdattach(struct device *parent, struct device *self, void *aux) 299 { 300 struct wd_softc *wd = (void *)self; 301 struct ata_device *adev= aux; 302 int i, blank; 303 char tbuf[41], pbuf[9], c, *p, *q; 304 const struct wd_quirk *wdq; 305 306 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 307 callout_init(&wd->sc_restart_ch, 0); 308 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 309 #ifdef WD_SOFTBADSECT 310 SLIST_INIT(&wd->sc_bslist); 311 #endif 312 wd->atabus = adev->adev_bustype; 313 wd->openings = adev->adev_openings; 314 wd->drvp = adev->adev_drv_data; 315 316 wd->drvp->drv_done = wddone; 317 wd->drvp->drv_softc = &wd->sc_dev; 318 319 aprint_naive("\n"); 320 321 /* read our drive info */ 322 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 323 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 324 return; 325 } 326 327 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 328 i < sizeof(wd->sc_params.atap_model); i++) { 329 c = *p++; 330 if (c == '\0') 331 break; 332 if (c != ' ') { 333 if (blank) { 334 *q++ = ' '; 335 blank = 0; 336 } 337 *q++ = c; 338 } else 339 blank = 1; 340 } 341 *q++ = '\0'; 342 343 aprint_normal(": <%s>\n", tbuf); 344 345 wdq = wd_lookup_quirks(tbuf); 346 if (wdq != NULL) 347 wd->sc_quirks = wdq->wdq_quirks; 348 349 if (wd->sc_quirks != 0) { 350 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 351 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 352 sbuf, sizeof(sbuf)); 353 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 354 } 355 356 if ((wd->sc_params.atap_multi & 0xff) > 1) { 357 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 358 } else { 359 wd->sc_multi = 1; 360 } 361 362 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 363 wd->sc_dev.dv_xname, wd->sc_multi); 364 365 /* 48-bit LBA addressing */ 366 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 367 wd->sc_flags |= WDF_LBA48; 368 369 /* Prior to ATA-4, LBA was optional. */ 370 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 371 wd->sc_flags |= WDF_LBA; 372 #if 0 373 /* ATA-4 requires LBA. */ 374 if (wd->sc_params.atap_ataversion != 0xffff && 375 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 376 wd->sc_flags |= WDF_LBA; 377 #endif 378 379 if ((wd->sc_flags & WDF_LBA48) != 0) { 380 aprint_verbose(" LBA48 addressing\n"); 381 wd->sc_capacity = 382 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 383 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 384 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 385 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 386 } else if ((wd->sc_flags & WDF_LBA) != 0) { 387 aprint_verbose(" LBA addressing\n"); 388 wd->sc_capacity = 389 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 390 wd->sc_params.atap_capacity[0]; 391 } else { 392 aprint_verbose(" chs addressing\n"); 393 wd->sc_capacity = 394 wd->sc_params.atap_cylinders * 395 wd->sc_params.atap_heads * 396 wd->sc_params.atap_sectors; 397 } 398 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 399 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 400 "%d bytes/sect x %llu sectors\n", 401 self->dv_xname, pbuf, 402 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 403 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 404 wd->sc_params.atap_cylinders, 405 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 406 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 407 408 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 409 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 410 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 411 /* 412 * Initialize and attach the disk structure. 413 */ 414 /* we fill in dk_info later */ 415 disk_init(&wd->sc_dk, wd->sc_dev.dv_xname, &wddkdriver); 416 disk_attach(&wd->sc_dk); 417 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 418 #if NRND > 0 419 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 420 RND_TYPE_DISK, 0); 421 #endif 422 423 /* Discover wedges on this disk. */ 424 dkwedge_discover(&wd->sc_dk); 425 426 if (!pmf_device_register(self, wd_suspend, NULL)) 427 aprint_error_dev(self, "couldn't establish power handler\n"); 428 } 429 430 static bool 431 wd_suspend(device_t dv) 432 { 433 #if notyet 434 struct wd_softc *sc = device_private(dv); 435 436 wd_flushcache(sc, AT_WAIT | AT_POLL); 437 wd_standby(sc, AT_WAIT | AT_POLL); 438 #endif 439 440 return true; 441 } 442 443 int 444 wdactivate(struct device *self, enum devact act) 445 { 446 int rv = 0; 447 448 switch (act) { 449 case DVACT_ACTIVATE: 450 rv = EOPNOTSUPP; 451 break; 452 453 case DVACT_DEACTIVATE: 454 /* 455 * Nothing to do; we key off the device's DVF_ACTIVATE. 456 */ 457 break; 458 } 459 return (rv); 460 } 461 462 int 463 wddetach(struct device *self, int flags) 464 { 465 struct wd_softc *sc = (struct wd_softc *)self; 466 int s, bmaj, cmaj, i, mn; 467 468 /* locate the major number */ 469 bmaj = bdevsw_lookup_major(&wd_bdevsw); 470 cmaj = cdevsw_lookup_major(&wd_cdevsw); 471 472 /* Nuke the vnodes for any open instances. */ 473 for (i = 0; i < MAXPARTITIONS; i++) { 474 mn = WDMINOR(device_unit(self), i); 475 vdevgone(bmaj, mn, mn, VBLK); 476 vdevgone(cmaj, mn, mn, VCHR); 477 } 478 479 /* Delete all of our wedges. */ 480 dkwedge_delall(&sc->sc_dk); 481 482 s = splbio(); 483 484 /* Kill off any queued buffers. */ 485 bufq_drain(sc->sc_q); 486 487 bufq_free(sc->sc_q); 488 sc->atabus->ata_killpending(sc->drvp); 489 490 splx(s); 491 492 /* Detach disk. */ 493 disk_detach(&sc->sc_dk); 494 495 #ifdef WD_SOFTBADSECT 496 /* Clean out the bad sector list */ 497 while (!SLIST_EMPTY(&sc->sc_bslist)) { 498 void *head = SLIST_FIRST(&sc->sc_bslist); 499 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 500 free(head, M_TEMP); 501 } 502 sc->sc_bscount = 0; 503 #endif 504 505 pmf_device_deregister(self); 506 507 #if NRND > 0 508 /* Unhook the entropy source. */ 509 rnd_detach_source(&sc->rnd_source); 510 #endif 511 512 sc->drvp->drive_flags = 0; /* no drive any more here */ 513 514 return (0); 515 } 516 517 /* 518 * Read/write routine for a buffer. Validates the arguments and schedules the 519 * transfer. Does not wait for the transfer to complete. 520 */ 521 void 522 wdstrategy(struct buf *bp) 523 { 524 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 525 struct disklabel *lp = wd->sc_dk.dk_label; 526 daddr_t blkno; 527 int s; 528 529 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 530 DEBUG_XFERS); 531 532 /* Valid request? */ 533 if (bp->b_blkno < 0 || 534 (bp->b_bcount % lp->d_secsize) != 0 || 535 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 536 bp->b_error = EINVAL; 537 goto done; 538 } 539 540 /* If device invalidated (e.g. media change, door open), error. */ 541 if ((wd->sc_flags & WDF_LOADED) == 0) { 542 bp->b_error = EIO; 543 goto done; 544 } 545 546 /* If it's a null transfer, return immediately. */ 547 if (bp->b_bcount == 0) 548 goto done; 549 550 /* 551 * Do bounds checking, adjust transfer. if error, process. 552 * If end of partition, just return. 553 */ 554 if (WDPART(bp->b_dev) == RAW_PART) { 555 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 556 wd->sc_capacity) <= 0) 557 goto done; 558 } else { 559 if (bounds_check_with_label(&wd->sc_dk, bp, 560 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 561 goto done; 562 } 563 564 /* 565 * Now convert the block number to absolute and put it in 566 * terms of the device's logical block size. 567 */ 568 if (lp->d_secsize >= DEV_BSIZE) 569 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 570 else 571 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 572 573 if (WDPART(bp->b_dev) != RAW_PART) 574 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 575 576 bp->b_rawblkno = blkno; 577 578 #ifdef WD_SOFTBADSECT 579 /* 580 * If the transfer about to be attempted contains only a block that 581 * is known to be bad then return an error for the transfer without 582 * even attempting to start a transfer up under the premis that we 583 * will just end up doing more retries for a transfer that will end 584 * up failing again. 585 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 586 */ 587 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 588 struct disk_badsectors *dbs; 589 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 590 591 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 592 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 593 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 594 bp->b_error = EIO; 595 goto done; 596 } 597 } 598 #endif 599 600 /* Queue transfer on drive, activate drive and controller if idle. */ 601 s = splbio(); 602 BUFQ_PUT(wd->sc_q, bp); 603 wdstart(wd); 604 splx(s); 605 return; 606 done: 607 /* Toss transfer; we're done early. */ 608 bp->b_resid = bp->b_bcount; 609 biodone(bp); 610 } 611 612 /* 613 * Queue a drive for I/O. 614 */ 615 void 616 wdstart(void *arg) 617 { 618 struct wd_softc *wd = arg; 619 struct buf *bp = NULL; 620 621 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 622 DEBUG_XFERS); 623 while (wd->openings > 0) { 624 625 /* Is there a buf for us ? */ 626 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 627 return; 628 629 /* 630 * Make the command. First lock the device 631 */ 632 wd->openings--; 633 634 wd->retries = 0; 635 __wdstart(wd, bp); 636 } 637 } 638 639 static void 640 wd_split_mod15_write(struct buf *bp) 641 { 642 struct buf *obp = bp->b_private; 643 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 644 645 if (__predict_false(bp->b_error != 0)) { 646 /* 647 * Propagate the error. If this was the first half of 648 * the original transfer, make sure to account for that 649 * in the residual. 650 */ 651 if (bp->b_data == obp->b_data) 652 bp->b_resid += bp->b_bcount; 653 goto done; 654 } 655 656 /* 657 * If this was the second half of the transfer, we're all done! 658 */ 659 if (bp->b_data != obp->b_data) 660 goto done; 661 662 /* 663 * Advance the pointer to the second half and issue that command 664 * using the same opening. 665 */ 666 bp->b_flags = obp->b_flags | B_CALL; 667 bp->b_data = (char *)bp->b_data + bp->b_bcount; 668 bp->b_blkno += (bp->b_bcount / 512); 669 bp->b_rawblkno += (bp->b_bcount / 512); 670 __wdstart(sc, bp); 671 return; 672 673 done: 674 obp->b_error = bp->b_error; 675 obp->b_resid = bp->b_resid; 676 putiobuf(bp); 677 biodone(obp); 678 sc->openings++; 679 /* wddone() will call wdstart() */ 680 } 681 682 void 683 __wdstart(struct wd_softc *wd, struct buf *bp) 684 { 685 686 /* 687 * Deal with the "split mod15 write" quirk. We just divide the 688 * transfer in two, doing the first half and then then second half 689 * with the same command opening. 690 * 691 * Note we MUST do this here, because we can't let insertion 692 * into the bufq cause the transfers to be re-merged. 693 */ 694 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 695 (bp->b_flags & B_READ) == 0 && 696 bp->b_bcount > 512 && 697 ((bp->b_bcount / 512) % 15) == 1)) { 698 struct buf *nbp; 699 700 /* already at splbio */ 701 nbp = getiobuf_nowait(); 702 if (__predict_false(nbp == NULL)) { 703 /* No memory -- fail the iop. */ 704 bp->b_error = ENOMEM; 705 bp->b_resid = bp->b_bcount; 706 biodone(bp); 707 wd->openings++; 708 return; 709 } 710 711 nbp->b_error = 0; 712 nbp->b_proc = bp->b_proc; 713 nbp->b_vp = NULLVP; 714 nbp->b_dev = bp->b_dev; 715 716 nbp->b_bcount = bp->b_bcount / 2; 717 nbp->b_bufsize = bp->b_bcount / 2; 718 nbp->b_data = bp->b_data; 719 720 nbp->b_blkno = bp->b_blkno; 721 nbp->b_rawblkno = bp->b_rawblkno; 722 723 nbp->b_flags = bp->b_flags | B_CALL; 724 nbp->b_iodone = wd_split_mod15_write; 725 726 /* Put ptr to orig buf in b_private and use new buf */ 727 nbp->b_private = bp; 728 729 BIO_COPYPRIO(nbp, bp); 730 731 bp = nbp; 732 } 733 734 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 735 wd->sc_wdc_bio.blkdone =0; 736 wd->sc_bp = bp; 737 /* 738 * If we're retrying, retry in single-sector mode. This will give us 739 * the sector number of the problem, and will eventually allow the 740 * transfer to succeed. 741 */ 742 if (wd->retries >= WDIORETRIES_SINGLE) 743 wd->sc_wdc_bio.flags = ATA_SINGLE; 744 else 745 wd->sc_wdc_bio.flags = 0; 746 if (wd->sc_flags & WDF_LBA48 && 747 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 748 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 749 wd->sc_wdc_bio.flags |= ATA_LBA48; 750 if (wd->sc_flags & WDF_LBA) 751 wd->sc_wdc_bio.flags |= ATA_LBA; 752 if (bp->b_flags & B_READ) 753 wd->sc_wdc_bio.flags |= ATA_READ; 754 wd->sc_wdc_bio.bcount = bp->b_bcount; 755 wd->sc_wdc_bio.databuf = bp->b_data; 756 /* Instrumentation. */ 757 disk_busy(&wd->sc_dk); 758 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 759 case ATACMD_TRY_AGAIN: 760 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 761 break; 762 case ATACMD_QUEUED: 763 case ATACMD_COMPLETE: 764 break; 765 default: 766 panic("__wdstart: bad return code from ata_bio()"); 767 } 768 } 769 770 void 771 wddone(void *v) 772 { 773 struct wd_softc *wd = v; 774 struct buf *bp = wd->sc_bp; 775 const char *errmsg; 776 int do_perror = 0; 777 int nblks; 778 779 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 780 DEBUG_XFERS); 781 if (bp == NULL) 782 return; 783 bp->b_resid = wd->sc_wdc_bio.bcount; 784 switch (wd->sc_wdc_bio.error) { 785 case ERR_DMA: 786 errmsg = "DMA error"; 787 goto retry; 788 case ERR_DF: 789 errmsg = "device fault"; 790 goto retry; 791 case TIMEOUT: 792 errmsg = "device timeout"; 793 goto retry; 794 case ERR_RESET: 795 errmsg = "channel reset"; 796 goto retry2; 797 case ERROR: 798 /* Don't care about media change bits */ 799 if (wd->sc_wdc_bio.r_error != 0 && 800 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 801 goto noerror; 802 errmsg = "error"; 803 do_perror = 1; 804 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 805 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 806 nblks = wd->sc_wdc_bio.bcount / 807 wd->sc_dk.dk_label->d_secsize; 808 /* 809 * If we get a "id not found" when crossing the 810 * LBA48_THRESHOLD, and the drive is larger than 811 * 128GB, then we can assume the drive has the 812 * LBA48 bug and we switch to LBA48. 813 */ 814 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 815 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 816 wd->sc_capacity > LBA48_THRESHOLD + 1) { 817 errmsg = "LBA48 bug"; 818 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 819 do_perror = 0; 820 goto retry2; 821 } 822 } 823 retry: /* Just reset and retry. Can we do more ? */ 824 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 825 retry2: 826 diskerr(bp, "wd", errmsg, LOG_PRINTF, 827 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 828 if (wd->retries < WDIORETRIES) 829 printf(", retrying"); 830 printf("\n"); 831 if (do_perror) 832 wdperror(wd); 833 if (wd->retries < WDIORETRIES) { 834 wd->retries++; 835 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 836 wdrestart, wd); 837 return; 838 } 839 840 #ifdef WD_SOFTBADSECT 841 /* 842 * Not all errors indicate a failed block but those that do, 843 * put the block on the bad-block list for the device. Only 844 * do this for reads because the drive should do it for writes, 845 * itself, according to Manuel. 846 */ 847 if ((bp->b_flags & B_READ) && 848 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 849 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 850 struct disk_badsectors *dbs; 851 852 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 853 dbs->dbs_min = bp->b_rawblkno; 854 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 855 microtime(&dbs->dbs_failedat); 856 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 857 wd->sc_bscount++; 858 } 859 #endif 860 bp->b_error = EIO; 861 break; 862 case NOERROR: 863 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 864 printf("%s: soft error (corrected)\n", 865 wd->sc_dev.dv_xname); 866 break; 867 case ERR_NODEV: 868 bp->b_error = EIO; 869 break; 870 } 871 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 872 (bp->b_flags & B_READ)); 873 #if NRND > 0 874 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 875 #endif 876 /* XXX Yuck, but we don't want to increment openings in this case */ 877 if (__predict_false((bp->b_flags & B_CALL) != 0 && 878 bp->b_iodone == wd_split_mod15_write)) 879 biodone(bp); 880 else { 881 biodone(bp); 882 wd->openings++; 883 } 884 wdstart(wd); 885 } 886 887 void 888 wdrestart(void *v) 889 { 890 struct wd_softc *wd = v; 891 struct buf *bp = wd->sc_bp; 892 int s; 893 894 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 895 DEBUG_XFERS); 896 s = splbio(); 897 __wdstart(v, bp); 898 splx(s); 899 } 900 901 int 902 wdread(dev_t dev, struct uio *uio, int flags) 903 { 904 905 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 906 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 907 } 908 909 int 910 wdwrite(dev_t dev, struct uio *uio, int flags) 911 { 912 913 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 914 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 915 } 916 917 int 918 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 919 { 920 struct wd_softc *wd; 921 int part, error; 922 923 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 924 wd = device_lookup(&wd_cd, WDUNIT(dev)); 925 if (wd == NULL) 926 return (ENXIO); 927 928 if (! device_is_active(&wd->sc_dev)) 929 return (ENODEV); 930 931 part = WDPART(dev); 932 933 mutex_enter(&wd->sc_dk.dk_openlock); 934 935 /* 936 * If there are wedges, and this is not RAW_PART, then we 937 * need to fail. 938 */ 939 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 940 error = EBUSY; 941 goto bad1; 942 } 943 944 /* 945 * If this is the first open of this device, add a reference 946 * to the adapter. 947 */ 948 if (wd->sc_dk.dk_openmask == 0 && 949 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 950 goto bad1; 951 952 if (wd->sc_dk.dk_openmask != 0) { 953 /* 954 * If any partition is open, but the disk has been invalidated, 955 * disallow further opens. 956 */ 957 if ((wd->sc_flags & WDF_LOADED) == 0) { 958 error = EIO; 959 goto bad2; 960 } 961 } else { 962 if ((wd->sc_flags & WDF_LOADED) == 0) { 963 wd->sc_flags |= WDF_LOADED; 964 965 /* Load the physical device parameters. */ 966 wd_get_params(wd, AT_WAIT, &wd->sc_params); 967 968 /* Load the partition info if not already loaded. */ 969 wdgetdisklabel(wd); 970 } 971 } 972 973 /* Check that the partition exists. */ 974 if (part != RAW_PART && 975 (part >= wd->sc_dk.dk_label->d_npartitions || 976 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 977 error = ENXIO; 978 goto bad2; 979 } 980 981 /* Insure only one open at a time. */ 982 switch (fmt) { 983 case S_IFCHR: 984 wd->sc_dk.dk_copenmask |= (1 << part); 985 break; 986 case S_IFBLK: 987 wd->sc_dk.dk_bopenmask |= (1 << part); 988 break; 989 } 990 wd->sc_dk.dk_openmask = 991 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 992 993 mutex_exit(&wd->sc_dk.dk_openlock); 994 return 0; 995 996 bad2: 997 if (wd->sc_dk.dk_openmask == 0) 998 wd->atabus->ata_delref(wd->drvp); 999 bad1: 1000 mutex_exit(&wd->sc_dk.dk_openlock); 1001 return error; 1002 } 1003 1004 int 1005 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1006 { 1007 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1008 int part = WDPART(dev); 1009 1010 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1011 1012 mutex_enter(&wd->sc_dk.dk_openlock); 1013 1014 switch (fmt) { 1015 case S_IFCHR: 1016 wd->sc_dk.dk_copenmask &= ~(1 << part); 1017 break; 1018 case S_IFBLK: 1019 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1020 break; 1021 } 1022 wd->sc_dk.dk_openmask = 1023 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1024 1025 if (wd->sc_dk.dk_openmask == 0) { 1026 wd_flushcache(wd, AT_WAIT); 1027 1028 if (! (wd->sc_flags & WDF_KLABEL)) 1029 wd->sc_flags &= ~WDF_LOADED; 1030 1031 wd->atabus->ata_delref(wd->drvp); 1032 } 1033 1034 mutex_exit(&wd->sc_dk.dk_openlock); 1035 return 0; 1036 } 1037 1038 void 1039 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1040 { 1041 1042 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1043 memset(lp, 0, sizeof(struct disklabel)); 1044 1045 lp->d_secsize = DEV_BSIZE; 1046 lp->d_ntracks = wd->sc_params.atap_heads; 1047 lp->d_nsectors = wd->sc_params.atap_sectors; 1048 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1049 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1050 wd->sc_params.atap_cylinders; 1051 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1052 1053 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1054 lp->d_type = DTYPE_ST506; 1055 else 1056 lp->d_type = DTYPE_ESDI; 1057 1058 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1059 strncpy(lp->d_packname, "fictitious", 16); 1060 if (wd->sc_capacity > UINT32_MAX) 1061 lp->d_secperunit = UINT32_MAX; 1062 else 1063 lp->d_secperunit = wd->sc_capacity; 1064 lp->d_rpm = 3600; 1065 lp->d_interleave = 1; 1066 lp->d_flags = 0; 1067 1068 lp->d_partitions[RAW_PART].p_offset = 0; 1069 lp->d_partitions[RAW_PART].p_size = 1070 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1071 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1072 lp->d_npartitions = RAW_PART + 1; 1073 1074 lp->d_magic = DISKMAGIC; 1075 lp->d_magic2 = DISKMAGIC; 1076 lp->d_checksum = dkcksum(lp); 1077 } 1078 1079 /* 1080 * Fabricate a default disk label, and try to read the correct one. 1081 */ 1082 void 1083 wdgetdisklabel(struct wd_softc *wd) 1084 { 1085 struct disklabel *lp = wd->sc_dk.dk_label; 1086 const char *errstring; 1087 int s; 1088 1089 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1090 1091 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1092 1093 wdgetdefaultlabel(wd, lp); 1094 1095 wd->sc_badsect[0] = -1; 1096 1097 if (wd->drvp->state > RESET) { 1098 s = splbio(); 1099 wd->drvp->drive_flags |= DRIVE_RESET; 1100 splx(s); 1101 } 1102 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1103 RAW_PART), wdstrategy, lp, 1104 wd->sc_dk.dk_cpulabel); 1105 if (errstring) { 1106 /* 1107 * This probably happened because the drive's default 1108 * geometry doesn't match the DOS geometry. We 1109 * assume the DOS geometry is now in the label and try 1110 * again. XXX This is a kluge. 1111 */ 1112 if (wd->drvp->state > RESET) { 1113 s = splbio(); 1114 wd->drvp->drive_flags |= DRIVE_RESET; 1115 splx(s); 1116 } 1117 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1118 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1119 } 1120 if (errstring) { 1121 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1122 return; 1123 } 1124 1125 if (wd->drvp->state > RESET) { 1126 s = splbio(); 1127 wd->drvp->drive_flags |= DRIVE_RESET; 1128 splx(s); 1129 } 1130 #ifdef HAS_BAD144_HANDLING 1131 if ((lp->d_flags & D_BADSECT) != 0) 1132 bad144intern(wd); 1133 #endif 1134 } 1135 1136 void 1137 wdperror(const struct wd_softc *wd) 1138 { 1139 static const char *const errstr0_3[] = {"address mark not found", 1140 "track 0 not found", "aborted command", "media change requested", 1141 "id not found", "media changed", "uncorrectable data error", 1142 "bad block detected"}; 1143 static const char *const errstr4_5[] = { 1144 "obsolete (address mark not found)", 1145 "no media/write protected", "aborted command", 1146 "media change requested", "id not found", "media changed", 1147 "uncorrectable data error", "interface CRC error"}; 1148 const char *const *errstr; 1149 int i; 1150 const char *sep = ""; 1151 1152 const char *devname = wd->sc_dev.dv_xname; 1153 struct ata_drive_datas *drvp = wd->drvp; 1154 int errno = wd->sc_wdc_bio.r_error; 1155 1156 if (drvp->ata_vers >= 4) 1157 errstr = errstr4_5; 1158 else 1159 errstr = errstr0_3; 1160 1161 printf("%s: (", devname); 1162 1163 if (errno == 0) 1164 printf("error not notified"); 1165 1166 for (i = 0; i < 8; i++) { 1167 if (errno & (1 << i)) { 1168 printf("%s%s", sep, errstr[i]); 1169 sep = ", "; 1170 } 1171 } 1172 printf(")\n"); 1173 } 1174 1175 int 1176 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1177 { 1178 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1179 int error = 0, s; 1180 #ifdef __HAVE_OLD_DISKLABEL 1181 struct disklabel *newlabel = NULL; 1182 #endif 1183 1184 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1185 1186 if ((wd->sc_flags & WDF_LOADED) == 0) 1187 return EIO; 1188 1189 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1190 if (error != EPASSTHROUGH) 1191 return (error); 1192 1193 switch (xfer) { 1194 #ifdef HAS_BAD144_HANDLING 1195 case DIOCSBAD: 1196 if ((flag & FWRITE) == 0) 1197 return EBADF; 1198 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1199 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1200 bad144intern(wd); 1201 return 0; 1202 #endif 1203 #ifdef WD_SOFTBADSECT 1204 case DIOCBSLIST : 1205 { 1206 u_int32_t count, missing, skip; 1207 struct disk_badsecinfo dbsi; 1208 struct disk_badsectors *dbs; 1209 size_t available; 1210 uint8_t *laddr; 1211 1212 dbsi = *(struct disk_badsecinfo *)addr; 1213 missing = wd->sc_bscount; 1214 count = 0; 1215 available = dbsi.dbsi_bufsize; 1216 skip = dbsi.dbsi_skip; 1217 laddr = (uint8_t *)dbsi.dbsi_buffer; 1218 1219 /* 1220 * We start this loop with the expectation that all of the 1221 * entries will be missed and decrement this counter each 1222 * time we either skip over one (already copied out) or 1223 * we actually copy it back to user space. The structs 1224 * holding the bad sector information are copied directly 1225 * back to user space whilst the summary is returned via 1226 * the struct passed in via the ioctl. 1227 */ 1228 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1229 if (skip > 0) { 1230 missing--; 1231 skip--; 1232 continue; 1233 } 1234 if (available < sizeof(*dbs)) 1235 break; 1236 available -= sizeof(*dbs); 1237 copyout(dbs, laddr, sizeof(*dbs)); 1238 laddr += sizeof(*dbs); 1239 missing--; 1240 count++; 1241 } 1242 dbsi.dbsi_left = missing; 1243 dbsi.dbsi_copied = count; 1244 *(struct disk_badsecinfo *)addr = dbsi; 1245 return 0; 1246 } 1247 1248 case DIOCBSFLUSH : 1249 /* Clean out the bad sector list */ 1250 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1251 void *head = SLIST_FIRST(&wd->sc_bslist); 1252 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1253 free(head, M_TEMP); 1254 } 1255 wd->sc_bscount = 0; 1256 return 0; 1257 #endif 1258 case DIOCGDINFO: 1259 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1260 return 0; 1261 #ifdef __HAVE_OLD_DISKLABEL 1262 case ODIOCGDINFO: 1263 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1264 if (newlabel == NULL) 1265 return EIO; 1266 *newlabel = *(wd->sc_dk.dk_label); 1267 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1268 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1269 else 1270 error = ENOTTY; 1271 free(newlabel, M_TEMP); 1272 return error; 1273 #endif 1274 1275 case DIOCGPART: 1276 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1277 ((struct partinfo *)addr)->part = 1278 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1279 return 0; 1280 1281 case DIOCWDINFO: 1282 case DIOCSDINFO: 1283 #ifdef __HAVE_OLD_DISKLABEL 1284 case ODIOCWDINFO: 1285 case ODIOCSDINFO: 1286 #endif 1287 { 1288 struct disklabel *lp; 1289 1290 if ((flag & FWRITE) == 0) 1291 return EBADF; 1292 1293 #ifdef __HAVE_OLD_DISKLABEL 1294 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1295 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1296 if (newlabel == NULL) 1297 return EIO; 1298 memset(newlabel, 0, sizeof newlabel); 1299 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1300 lp = newlabel; 1301 } else 1302 #endif 1303 lp = (struct disklabel *)addr; 1304 1305 mutex_enter(&wd->sc_dk.dk_openlock); 1306 wd->sc_flags |= WDF_LABELLING; 1307 1308 error = setdisklabel(wd->sc_dk.dk_label, 1309 lp, /*wd->sc_dk.dk_openmask : */0, 1310 wd->sc_dk.dk_cpulabel); 1311 if (error == 0) { 1312 if (wd->drvp->state > RESET) { 1313 s = splbio(); 1314 wd->drvp->drive_flags |= DRIVE_RESET; 1315 splx(s); 1316 } 1317 if (xfer == DIOCWDINFO 1318 #ifdef __HAVE_OLD_DISKLABEL 1319 || xfer == ODIOCWDINFO 1320 #endif 1321 ) 1322 error = writedisklabel(WDLABELDEV(dev), 1323 wdstrategy, wd->sc_dk.dk_label, 1324 wd->sc_dk.dk_cpulabel); 1325 } 1326 1327 wd->sc_flags &= ~WDF_LABELLING; 1328 mutex_exit(&wd->sc_dk.dk_openlock); 1329 #ifdef __HAVE_OLD_DISKLABEL 1330 if (newlabel != NULL) 1331 free(newlabel, M_TEMP); 1332 #endif 1333 return error; 1334 } 1335 1336 case DIOCKLABEL: 1337 if (*(int *)addr) 1338 wd->sc_flags |= WDF_KLABEL; 1339 else 1340 wd->sc_flags &= ~WDF_KLABEL; 1341 return 0; 1342 1343 case DIOCWLABEL: 1344 if ((flag & FWRITE) == 0) 1345 return EBADF; 1346 if (*(int *)addr) 1347 wd->sc_flags |= WDF_WLABEL; 1348 else 1349 wd->sc_flags &= ~WDF_WLABEL; 1350 return 0; 1351 1352 case DIOCGDEFLABEL: 1353 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1354 return 0; 1355 #ifdef __HAVE_OLD_DISKLABEL 1356 case ODIOCGDEFLABEL: 1357 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1358 if (newlabel == NULL) 1359 return EIO; 1360 wdgetdefaultlabel(wd, newlabel); 1361 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1362 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1363 else 1364 error = ENOTTY; 1365 free(newlabel, M_TEMP); 1366 return error; 1367 #endif 1368 1369 #ifdef notyet 1370 case DIOCWFORMAT: 1371 if ((flag & FWRITE) == 0) 1372 return EBADF; 1373 { 1374 register struct format_op *fop; 1375 struct iovec aiov; 1376 struct uio auio; 1377 1378 fop = (struct format_op *)addr; 1379 aiov.iov_base = fop->df_buf; 1380 aiov.iov_len = fop->df_count; 1381 auio.uio_iov = &aiov; 1382 auio.uio_iovcnt = 1; 1383 auio.uio_resid = fop->df_count; 1384 auio.uio_offset = 1385 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1386 auio.uio_vmspace = l->l_proc->p_vmspace; 1387 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1388 &auio); 1389 fop->df_count -= auio.uio_resid; 1390 fop->df_reg[0] = wdc->sc_status; 1391 fop->df_reg[1] = wdc->sc_error; 1392 return error; 1393 } 1394 #endif 1395 case DIOCGCACHE: 1396 return wd_getcache(wd, (int *)addr); 1397 1398 case DIOCSCACHE: 1399 return wd_setcache(wd, *(int *)addr); 1400 1401 case DIOCCACHESYNC: 1402 return wd_flushcache(wd, AT_WAIT); 1403 1404 case ATAIOCCOMMAND: 1405 /* 1406 * Make sure this command is (relatively) safe first 1407 */ 1408 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1409 (flag & FWRITE) == 0) 1410 return (EBADF); 1411 { 1412 struct wd_ioctl *wi; 1413 atareq_t *atareq = (atareq_t *) addr; 1414 int error1; 1415 1416 wi = wi_get(); 1417 wi->wi_softc = wd; 1418 wi->wi_atareq = *atareq; 1419 1420 if (atareq->datalen && atareq->flags & 1421 (ATACMD_READ | ATACMD_WRITE)) { 1422 void *tbuf; 1423 if (atareq->datalen < DEV_BSIZE 1424 && atareq->command == WDCC_IDENTIFY) { 1425 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1426 wi->wi_iov.iov_base = tbuf; 1427 wi->wi_iov.iov_len = DEV_BSIZE; 1428 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1429 } else { 1430 tbuf = NULL; 1431 wi->wi_iov.iov_base = atareq->databuf; 1432 wi->wi_iov.iov_len = atareq->datalen; 1433 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1434 } 1435 wi->wi_uio.uio_iov = &wi->wi_iov; 1436 wi->wi_uio.uio_iovcnt = 1; 1437 wi->wi_uio.uio_resid = atareq->datalen; 1438 wi->wi_uio.uio_offset = 0; 1439 wi->wi_uio.uio_rw = 1440 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1441 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1442 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1443 minphys, &wi->wi_uio); 1444 if (tbuf != NULL && error1 == 0) { 1445 error1 = copyout(tbuf, atareq->databuf, 1446 atareq->datalen); 1447 free(tbuf, M_TEMP); 1448 } 1449 } else { 1450 /* No need to call physio if we don't have any 1451 user data */ 1452 wi->wi_bp.b_flags = 0; 1453 wi->wi_bp.b_data = 0; 1454 wi->wi_bp.b_bcount = 0; 1455 wi->wi_bp.b_dev = 0; 1456 wi->wi_bp.b_proc = l->l_proc; 1457 wdioctlstrategy(&wi->wi_bp); 1458 error1 = wi->wi_bp.b_error; 1459 } 1460 *atareq = wi->wi_atareq; 1461 wi_free(wi); 1462 return(error1); 1463 } 1464 1465 case DIOCAWEDGE: 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_add(dkw)); 1475 } 1476 1477 case DIOCDWEDGE: 1478 { 1479 struct dkwedge_info *dkw = (void *) addr; 1480 1481 if ((flag & FWRITE) == 0) 1482 return (EBADF); 1483 1484 /* If the ioctl happens here, the parent is us. */ 1485 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1486 return (dkwedge_del(dkw)); 1487 } 1488 1489 case DIOCLWEDGES: 1490 { 1491 struct dkwedge_list *dkwl = (void *) addr; 1492 1493 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1494 } 1495 1496 case DIOCGSTRATEGY: 1497 { 1498 struct disk_strategy *dks = (void *)addr; 1499 1500 s = splbio(); 1501 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1502 sizeof(dks->dks_name)); 1503 splx(s); 1504 dks->dks_paramlen = 0; 1505 1506 return 0; 1507 } 1508 1509 case DIOCSSTRATEGY: 1510 { 1511 struct disk_strategy *dks = (void *)addr; 1512 struct bufq_state *new; 1513 struct bufq_state *old; 1514 1515 if ((flag & FWRITE) == 0) { 1516 return EBADF; 1517 } 1518 if (dks->dks_param != NULL) { 1519 return EINVAL; 1520 } 1521 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1522 error = bufq_alloc(&new, dks->dks_name, 1523 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1524 if (error) { 1525 return error; 1526 } 1527 s = splbio(); 1528 old = wd->sc_q; 1529 bufq_move(new, old); 1530 wd->sc_q = new; 1531 splx(s); 1532 bufq_free(old); 1533 1534 return 0; 1535 } 1536 1537 default: 1538 return ENOTTY; 1539 } 1540 1541 #ifdef DIAGNOSTIC 1542 panic("wdioctl: impossible"); 1543 #endif 1544 } 1545 1546 #ifdef B_FORMAT 1547 int 1548 wdformat(struct buf *bp) 1549 { 1550 1551 bp->b_flags |= B_FORMAT; 1552 return wdstrategy(bp); 1553 } 1554 #endif 1555 1556 int 1557 wdsize(dev_t dev) 1558 { 1559 struct wd_softc *wd; 1560 int part, omask; 1561 int size; 1562 1563 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1564 1565 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1566 if (wd == NULL) 1567 return (-1); 1568 1569 part = WDPART(dev); 1570 omask = wd->sc_dk.dk_openmask & (1 << part); 1571 1572 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1573 return (-1); 1574 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1575 size = -1; 1576 else 1577 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1578 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1579 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1580 return (-1); 1581 return (size); 1582 } 1583 1584 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1585 static int wddoingadump = 0; 1586 static int wddumprecalibrated = 0; 1587 1588 /* 1589 * Dump core after a system crash. 1590 */ 1591 int 1592 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1593 { 1594 struct wd_softc *wd; /* disk unit to do the I/O */ 1595 struct disklabel *lp; /* disk's disklabel */ 1596 int part, err; 1597 int nblks; /* total number of sectors left to write */ 1598 1599 /* Check if recursive dump; if so, punt. */ 1600 if (wddoingadump) 1601 return EFAULT; 1602 wddoingadump = 1; 1603 1604 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1605 if (wd == NULL) 1606 return (ENXIO); 1607 1608 part = WDPART(dev); 1609 1610 /* Convert to disk sectors. Request must be a multiple of size. */ 1611 lp = wd->sc_dk.dk_label; 1612 if ((size % lp->d_secsize) != 0) 1613 return EFAULT; 1614 nblks = size / lp->d_secsize; 1615 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1616 1617 /* Check transfer bounds against partition size. */ 1618 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1619 return EINVAL; 1620 1621 /* Offset block number to start of partition. */ 1622 blkno += lp->d_partitions[part].p_offset; 1623 1624 /* Recalibrate, if first dump transfer. */ 1625 if (wddumprecalibrated == 0) { 1626 wddumprecalibrated = 1; 1627 (*wd->atabus->ata_reset_drive)(wd->drvp, 1628 AT_POLL | AT_RST_EMERG); 1629 wd->drvp->state = RESET; 1630 } 1631 1632 wd->sc_bp = NULL; 1633 wd->sc_wdc_bio.blkno = blkno; 1634 wd->sc_wdc_bio.flags = ATA_POLL; 1635 if (wd->sc_flags & WDF_LBA48 && 1636 (blkno > LBA48_THRESHOLD || 1637 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1638 wd->sc_wdc_bio.flags |= ATA_LBA48; 1639 if (wd->sc_flags & WDF_LBA) 1640 wd->sc_wdc_bio.flags |= ATA_LBA; 1641 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1642 wd->sc_wdc_bio.databuf = va; 1643 #ifndef WD_DUMP_NOT_TRUSTED 1644 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1645 case ATACMD_TRY_AGAIN: 1646 panic("wddump: try again"); 1647 break; 1648 case ATACMD_QUEUED: 1649 panic("wddump: polled command has been queued"); 1650 break; 1651 case ATACMD_COMPLETE: 1652 break; 1653 } 1654 switch(wd->sc_wdc_bio.error) { 1655 case TIMEOUT: 1656 printf("wddump: device timed out"); 1657 err = EIO; 1658 break; 1659 case ERR_DF: 1660 printf("wddump: drive fault"); 1661 err = EIO; 1662 break; 1663 case ERR_DMA: 1664 printf("wddump: DMA error"); 1665 err = EIO; 1666 break; 1667 case ERROR: 1668 printf("wddump: "); 1669 wdperror(wd); 1670 err = EIO; 1671 break; 1672 case NOERROR: 1673 err = 0; 1674 break; 1675 default: 1676 panic("wddump: unknown error type"); 1677 } 1678 if (err != 0) { 1679 printf("\n"); 1680 return err; 1681 } 1682 #else /* WD_DUMP_NOT_TRUSTED */ 1683 /* Let's just talk about this first... */ 1684 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1685 unit, va, cylin, head, sector); 1686 delay(500 * 1000); /* half a second */ 1687 #endif 1688 1689 wddoingadump = 0; 1690 return 0; 1691 } 1692 1693 #ifdef HAS_BAD144_HANDLING 1694 /* 1695 * Internalize the bad sector table. 1696 */ 1697 void 1698 bad144intern(struct wd_softc *wd) 1699 { 1700 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1701 struct disklabel *lp = wd->sc_dk.dk_label; 1702 int i = 0; 1703 1704 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1705 1706 for (; i < NBT_BAD; i++) { 1707 if (bt->bt_bad[i].bt_cyl == 0xffff) 1708 break; 1709 wd->sc_badsect[i] = 1710 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1711 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1712 (bt->bt_bad[i].bt_trksec & 0xff); 1713 } 1714 for (; i < NBT_BAD+1; i++) 1715 wd->sc_badsect[i] = -1; 1716 } 1717 #endif 1718 1719 static void 1720 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1721 { 1722 prop_dictionary_t disk_info, odisk_info, geom; 1723 const char *cp; 1724 1725 disk_info = prop_dictionary_create(); 1726 1727 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1728 cp = "ST506"; 1729 else { 1730 /* XXX Should have a case for ATA here, too. */ 1731 cp = "ESDI"; 1732 } 1733 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1734 1735 geom = prop_dictionary_create(); 1736 1737 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1738 1739 prop_dictionary_set_uint32(geom, "sector-size", 1740 DEV_BSIZE /* XXX 512? */); 1741 1742 prop_dictionary_set_uint16(geom, "sectors-per-track", 1743 wd->sc_params.atap_sectors); 1744 1745 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1746 wd->sc_params.atap_heads); 1747 1748 if (wd->sc_flags & WDF_LBA) 1749 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1750 wd->sc_capacity / 1751 (wd->sc_params.atap_heads * 1752 wd->sc_params.atap_sectors)); 1753 else 1754 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1755 wd->sc_params.atap_cylinders); 1756 1757 prop_dictionary_set(disk_info, "geometry", geom); 1758 prop_object_release(geom); 1759 1760 prop_dictionary_set(device_properties(&wd->sc_dev), 1761 "disk-info", disk_info); 1762 1763 /* 1764 * Don't release disk_info here; we keep a reference to it. 1765 * disk_detach() will release it when we go away. 1766 */ 1767 1768 odisk_info = wd->sc_dk.dk_info; 1769 wd->sc_dk.dk_info = disk_info; 1770 if (odisk_info) 1771 prop_object_release(odisk_info); 1772 } 1773 1774 int 1775 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1776 { 1777 1778 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1779 case CMD_AGAIN: 1780 return 1; 1781 case CMD_ERR: 1782 /* 1783 * We `know' there's a drive here; just assume it's old. 1784 * This geometry is only used to read the MBR and print a 1785 * (false) attach message. 1786 */ 1787 strncpy(params->atap_model, "ST506", 1788 sizeof params->atap_model); 1789 params->atap_config = ATA_CFG_FIXED; 1790 params->atap_cylinders = 1024; 1791 params->atap_heads = 8; 1792 params->atap_sectors = 17; 1793 params->atap_multi = 1; 1794 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1795 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1796 /* FALLTHROUGH */ 1797 case CMD_OK: 1798 wd_params_to_properties(wd, params); 1799 return 0; 1800 default: 1801 panic("wd_get_params: bad return code from ata_get_params"); 1802 /* NOTREACHED */ 1803 } 1804 } 1805 1806 int 1807 wd_getcache(struct wd_softc *wd, int *bitsp) 1808 { 1809 struct ataparams params; 1810 1811 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1812 return EIO; 1813 if (params.atap_cmd_set1 == 0x0000 || 1814 params.atap_cmd_set1 == 0xffff || 1815 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1816 *bitsp = 0; 1817 return 0; 1818 } 1819 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1820 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1821 *bitsp |= DKCACHE_WRITE; 1822 1823 return 0; 1824 } 1825 1826 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1827 1828 int 1829 wd_setcache(struct wd_softc *wd, int bits) 1830 { 1831 struct ataparams params; 1832 struct ata_command ata_c; 1833 1834 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1835 return EIO; 1836 1837 if (params.atap_cmd_set1 == 0x0000 || 1838 params.atap_cmd_set1 == 0xffff || 1839 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1840 return EOPNOTSUPP; 1841 1842 if ((bits & DKCACHE_READ) == 0 || 1843 (bits & DKCACHE_SAVE) != 0) 1844 return EOPNOTSUPP; 1845 1846 memset(&ata_c, 0, sizeof(struct ata_command)); 1847 ata_c.r_command = SET_FEATURES; 1848 ata_c.r_st_bmask = 0; 1849 ata_c.r_st_pmask = 0; 1850 ata_c.timeout = 30000; /* 30s timeout */ 1851 ata_c.flags = AT_WAIT; 1852 if (bits & DKCACHE_WRITE) 1853 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1854 else 1855 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1856 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1857 printf("%s: wd_setcache command not complete\n", 1858 wd->sc_dev.dv_xname); 1859 return EIO; 1860 } 1861 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1862 char sbuf[sizeof(at_errbits) + 64]; 1863 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1864 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1865 sbuf); 1866 return EIO; 1867 } 1868 return 0; 1869 } 1870 1871 static int 1872 wd_standby(struct wd_softc *wd, int flags) 1873 { 1874 struct ata_command ata_c; 1875 1876 memset(&ata_c, 0, sizeof(struct ata_command)); 1877 ata_c.r_command = WDCC_STANDBY_IMMED; 1878 ata_c.r_st_bmask = WDCS_DRDY; 1879 ata_c.r_st_pmask = WDCS_DRDY; 1880 ata_c.flags = flags; 1881 ata_c.timeout = 30000; /* 30s timeout */ 1882 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1883 aprint_error_dev(&wd->sc_dev, 1884 "standby immediate command didn't complete\n"); 1885 return EIO; 1886 } 1887 if (ata_c.flags & AT_ERROR) { 1888 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1889 return ENODEV; 1890 } 1891 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1892 char sbuf[sizeof(at_errbits) + 64]; 1893 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1894 aprint_error_dev(&wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1895 return EIO; 1896 } 1897 return 0; 1898 } 1899 1900 int 1901 wd_flushcache(struct wd_softc *wd, int flags) 1902 { 1903 struct ata_command ata_c; 1904 1905 /* 1906 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1907 * only ATA-2 and still support it. 1908 */ 1909 if (wd->drvp->ata_vers < 4 && 1910 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1911 wd->sc_params.atap_cmd_set2 == 0xffff)) 1912 return ENODEV; 1913 memset(&ata_c, 0, sizeof(struct ata_command)); 1914 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1915 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1916 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1917 else 1918 ata_c.r_command = WDCC_FLUSHCACHE; 1919 ata_c.r_st_bmask = WDCS_DRDY; 1920 ata_c.r_st_pmask = WDCS_DRDY; 1921 ata_c.flags = flags; 1922 ata_c.timeout = 30000; /* 30s timeout */ 1923 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1924 printf("%s: flush cache command didn't complete\n", 1925 wd->sc_dev.dv_xname); 1926 return EIO; 1927 } 1928 if (ata_c.flags & AT_ERROR) { 1929 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1930 return ENODEV; 1931 } 1932 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1933 char sbuf[sizeof(at_errbits) + 64]; 1934 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1935 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1936 sbuf); 1937 return EIO; 1938 } 1939 return 0; 1940 } 1941 1942 /* 1943 * Allocate space for a ioctl queue structure. Mostly taken from 1944 * scsipi_ioctl.c 1945 */ 1946 struct wd_ioctl * 1947 wi_get(void) 1948 { 1949 struct wd_ioctl *wi; 1950 int s; 1951 1952 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1953 simple_lock_init(&wi->wi_bp.b_interlock); 1954 s = splbio(); 1955 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1956 splx(s); 1957 return (wi); 1958 } 1959 1960 /* 1961 * Free an ioctl structure and remove it from our list 1962 */ 1963 1964 void 1965 wi_free(struct wd_ioctl *wi) 1966 { 1967 int s; 1968 1969 s = splbio(); 1970 LIST_REMOVE(wi, wi_list); 1971 splx(s); 1972 free(wi, M_TEMP); 1973 } 1974 1975 /* 1976 * Find a wd_ioctl structure based on the struct buf. 1977 */ 1978 1979 struct wd_ioctl * 1980 wi_find(struct buf *bp) 1981 { 1982 struct wd_ioctl *wi; 1983 int s; 1984 1985 s = splbio(); 1986 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1987 if (bp == &wi->wi_bp) 1988 break; 1989 splx(s); 1990 return (wi); 1991 } 1992 1993 /* 1994 * Ioctl pseudo strategy routine 1995 * 1996 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1997 * happens here is: 1998 * 1999 * - wdioctl() queues a wd_ioctl structure. 2000 * 2001 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2002 * user space I/O is required. If physio() is called, physio() eventually 2003 * calls wdioctlstrategy(). 2004 * 2005 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2006 * to perform the actual command 2007 * 2008 * The reason for the use of the pseudo strategy routine is because 2009 * when doing I/O to/from user space, physio _really_ wants to be in 2010 * the loop. We could put the entire buffer into the ioctl request 2011 * structure, but that won't scale if we want to do things like download 2012 * microcode. 2013 */ 2014 2015 void 2016 wdioctlstrategy(struct buf *bp) 2017 { 2018 struct wd_ioctl *wi; 2019 struct ata_command ata_c; 2020 int error = 0; 2021 2022 wi = wi_find(bp); 2023 if (wi == NULL) { 2024 printf("wdioctlstrategy: " 2025 "No matching ioctl request found in queue\n"); 2026 error = EINVAL; 2027 goto done; 2028 } 2029 2030 memset(&ata_c, 0, sizeof(ata_c)); 2031 2032 /* 2033 * Abort if physio broke up the transfer 2034 */ 2035 2036 if (bp->b_bcount != wi->wi_atareq.datalen) { 2037 printf("physio split wd ioctl request... cannot proceed\n"); 2038 error = EIO; 2039 goto done; 2040 } 2041 2042 /* 2043 * Abort if we didn't get a buffer size that was a multiple of 2044 * our sector size (or was larger than NBBY) 2045 */ 2046 2047 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2048 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2049 (1 << NBBY)) { 2050 error = EINVAL; 2051 goto done; 2052 } 2053 2054 /* 2055 * Make sure a timeout was supplied in the ioctl request 2056 */ 2057 2058 if (wi->wi_atareq.timeout == 0) { 2059 error = EINVAL; 2060 goto done; 2061 } 2062 2063 if (wi->wi_atareq.flags & ATACMD_READ) 2064 ata_c.flags |= AT_READ; 2065 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2066 ata_c.flags |= AT_WRITE; 2067 2068 if (wi->wi_atareq.flags & ATACMD_READREG) 2069 ata_c.flags |= AT_READREG; 2070 2071 ata_c.flags |= AT_WAIT; 2072 2073 ata_c.timeout = wi->wi_atareq.timeout; 2074 ata_c.r_command = wi->wi_atareq.command; 2075 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2076 ata_c.r_cyl = wi->wi_atareq.cylinder; 2077 ata_c.r_sector = wi->wi_atareq.sec_num; 2078 ata_c.r_count = wi->wi_atareq.sec_count; 2079 ata_c.r_features = wi->wi_atareq.features; 2080 ata_c.r_st_bmask = WDCS_DRDY; 2081 ata_c.r_st_pmask = WDCS_DRDY; 2082 ata_c.data = wi->wi_bp.b_data; 2083 ata_c.bcount = wi->wi_bp.b_bcount; 2084 2085 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2086 != ATACMD_COMPLETE) { 2087 wi->wi_atareq.retsts = ATACMD_ERROR; 2088 error = EIO; 2089 goto done; 2090 } 2091 2092 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2093 if (ata_c.flags & AT_ERROR) { 2094 wi->wi_atareq.retsts = ATACMD_ERROR; 2095 wi->wi_atareq.error = ata_c.r_error; 2096 } else if (ata_c.flags & AT_DF) 2097 wi->wi_atareq.retsts = ATACMD_DF; 2098 else 2099 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2100 } else { 2101 wi->wi_atareq.retsts = ATACMD_OK; 2102 if (wi->wi_atareq.flags & ATACMD_READREG) { 2103 wi->wi_atareq.head = ata_c.r_head ; 2104 wi->wi_atareq.cylinder = ata_c.r_cyl; 2105 wi->wi_atareq.sec_num = ata_c.r_sector; 2106 wi->wi_atareq.sec_count = ata_c.r_count; 2107 wi->wi_atareq.features = ata_c.r_features; 2108 wi->wi_atareq.error = ata_c.r_error; 2109 } 2110 } 2111 2112 done: 2113 bp->b_error = error; 2114 biodone(bp); 2115 } 2116
Indexes created Sun Oct 19 02:09:48 GMT 2025