wd.c revision 1.366
1 /* $NetBSD: wd.c,v 1.366 2008/12/16 22:35:29 christos 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 * 48 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 49 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 50 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 51 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 52 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 53 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 56 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 58 * POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.366 2008/12/16 22:35:29 christos Exp $"); 63 64 #include "opt_ata.h" 65 66 #include "rnd.h" 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/conf.h> 72 #include <sys/file.h> 73 #include <sys/stat.h> 74 #include <sys/ioctl.h> 75 #include <sys/buf.h> 76 #include <sys/bufq.h> 77 #include <sys/uio.h> 78 #include <sys/malloc.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/disk.h> 82 #include <sys/syslog.h> 83 #include <sys/proc.h> 84 #include <sys/reboot.h> 85 #include <sys/vnode.h> 86 #if NRND > 0 87 #include <sys/rnd.h> 88 #endif 89 90 #include <sys/intr.h> 91 #include <sys/bus.h> 92 93 #include <dev/ata/atareg.h> 94 #include <dev/ata/atavar.h> 95 #include <dev/ata/wdvar.h> 96 #include <dev/ic/wdcreg.h> 97 #include <sys/ataio.h> 98 #include "locators.h" 99 100 #include <prop/proplib.h> 101 102 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 103 104 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 105 #define WDIORETRIES 5 /* number of retries before giving up */ 106 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 107 108 #define WDUNIT(dev) DISKUNIT(dev) 109 #define WDPART(dev) DISKPART(dev) 110 #define WDMINOR(unit, part) DISKMINOR(unit, part) 111 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 112 113 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 114 115 #define DEBUG_INTR 0x01 116 #define DEBUG_XFERS 0x02 117 #define DEBUG_STATUS 0x04 118 #define DEBUG_FUNCS 0x08 119 #define DEBUG_PROBE 0x10 120 #ifdef ATADEBUG 121 int wdcdebug_wd_mask = 0x0; 122 #define ATADEBUG_PRINT(args, level) \ 123 if (wdcdebug_wd_mask & (level)) \ 124 printf args 125 #else 126 #define ATADEBUG_PRINT(args, level) 127 #endif 128 129 int wdprobe(struct device *, struct cfdata *, void *); 130 void wdattach(struct device *, struct device *, void *); 131 int wddetach(struct device *, int); 132 int wdactivate(struct device *, enum devact); 133 int wdprint(void *, char *); 134 void wdperror(const struct wd_softc *); 135 136 static bool wd_suspend(device_t PMF_FN_PROTO); 137 static int wd_standby(struct wd_softc *, int); 138 139 CFATTACH_DECL_NEW(wd, sizeof(struct wd_softc), 140 wdprobe, wdattach, wddetach, wdactivate); 141 142 extern struct cfdriver wd_cd; 143 144 dev_type_open(wdopen); 145 dev_type_close(wdclose); 146 dev_type_read(wdread); 147 dev_type_write(wdwrite); 148 dev_type_ioctl(wdioctl); 149 dev_type_strategy(wdstrategy); 150 dev_type_dump(wddump); 151 dev_type_size(wdsize); 152 153 const struct bdevsw wd_bdevsw = { 154 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 155 }; 156 157 const struct cdevsw wd_cdevsw = { 158 wdopen, wdclose, wdread, wdwrite, wdioctl, 159 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 160 }; 161 162 /* 163 * Glue necessary to hook WDCIOCCOMMAND into physio 164 */ 165 166 struct wd_ioctl { 167 LIST_ENTRY(wd_ioctl) wi_list; 168 struct buf wi_bp; 169 struct uio wi_uio; 170 struct iovec wi_iov; 171 atareq_t wi_atareq; 172 struct wd_softc *wi_softc; 173 }; 174 175 LIST_HEAD(, wd_ioctl) wi_head; 176 177 struct wd_ioctl *wi_find(struct buf *); 178 void wi_free(struct wd_ioctl *); 179 struct wd_ioctl *wi_get(void); 180 void wdioctlstrategy(struct buf *); 181 182 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 183 void wdgetdisklabel(struct wd_softc *); 184 void wdstart(void *); 185 void __wdstart(struct wd_softc*, struct buf *); 186 void wdrestart(void *); 187 void wddone(void *); 188 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 189 int wd_flushcache(struct wd_softc *, int); 190 bool wd_shutdown(device_t, int); 191 192 int wd_getcache(struct wd_softc *, int *); 193 int wd_setcache(struct wd_softc *, int); 194 195 struct dkdriver wddkdriver = { wdstrategy, minphys }; 196 197 #ifdef HAS_BAD144_HANDLING 198 static void bad144intern(struct wd_softc *); 199 #endif 200 201 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 202 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 203 204 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 205 206 /* 207 * Quirk table for IDE drives. Put more-specific matches first, since 208 * a simple globbing routine is used for matching. 209 */ 210 static const struct wd_quirk { 211 const char *wdq_match; /* inquiry pattern to match */ 212 int wdq_quirks; /* drive quirks */ 213 } wd_quirk_table[] = { 214 /* 215 * Some Seagate S-ATA drives have a PHY which can get confused 216 * with the way data is packetized by some S-ATA controllers. 217 * 218 * The work-around is to split in two any write transfer whose 219 * sector count % 15 == 1 (assuming 512 byte sectors). 220 * 221 * XXX This is an incomplete list. There are at least a couple 222 * XXX more model numbers. If you have trouble with such transfers 223 * XXX (8K is the most common) on Seagate S-ATA drives, please 224 * XXX notify thorpej (at) NetBSD.org. 225 */ 226 { "ST3120023AS", 227 WD_QUIRK_SPLIT_MOD15_WRITE }, 228 { "ST380023AS", 229 WD_QUIRK_SPLIT_MOD15_WRITE }, 230 231 /* 232 * These seagate drives seems to have issue addressing sector 0xfffffff 233 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 234 * LBA48 235 * Note that we can't just change the code to always use LBA48 for 236 * sector 0xfffffff, because this would break valid and working 237 * setups using LBA48 drives on non-LBA48-capable controllers 238 * (and it's hard to get a list of such controllers) 239 */ 240 { "ST3160021A*", 241 WD_QUIRK_FORCE_LBA48 }, 242 { "ST3160811A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160812A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160023A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160827A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 /* Attempt to catch all seagate drives larger than 200GB */ 251 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 254 WD_QUIRK_FORCE_LBA48 }, 255 { NULL, 256 0 } 257 }; 258 259 static const struct wd_quirk * 260 wd_lookup_quirks(const char *name) 261 { 262 const struct wd_quirk *wdq; 263 const char *estr; 264 265 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 266 /* 267 * We only want exact matches (which include matches 268 * against globbing characters). 269 */ 270 if (pmatch(name, wdq->wdq_match, &estr) == 2) 271 return (wdq); 272 } 273 return (NULL); 274 } 275 276 int 277 wdprobe(struct device *parent, struct cfdata *match, void *aux) 278 { 279 struct ata_device *adev = aux; 280 281 if (adev == NULL) 282 return 0; 283 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 284 return 0; 285 286 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 287 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 288 return 0; 289 return 1; 290 } 291 292 void 293 wdattach(struct device *parent, struct device *self, void *aux) 294 { 295 struct wd_softc *wd = device_private(self); 296 struct ata_device *adev= aux; 297 int i, blank; 298 char tbuf[41], pbuf[9], c, *p, *q; 299 const struct wd_quirk *wdq; 300 301 wd->sc_dev = self; 302 303 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 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", device_xname(self)); 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 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 349 aprint_normal_dev(self, "quirks %s\n", sbuf); 350 } 351 352 if ((wd->sc_params.atap_multi & 0xff) > 1) { 353 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 354 } else { 355 wd->sc_multi = 1; 356 } 357 358 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 359 wd->sc_multi); 360 361 /* 48-bit LBA addressing */ 362 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 363 wd->sc_flags |= WDF_LBA48; 364 365 /* Prior to ATA-4, LBA was optional. */ 366 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 367 wd->sc_flags |= WDF_LBA; 368 #if 0 369 /* ATA-4 requires LBA. */ 370 if (wd->sc_params.atap_ataversion != 0xffff && 371 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 372 wd->sc_flags |= WDF_LBA; 373 #endif 374 375 if ((wd->sc_flags & WDF_LBA48) != 0) { 376 aprint_verbose(" LBA48 addressing\n"); 377 wd->sc_capacity = 378 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 379 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 380 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 381 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 382 } else if ((wd->sc_flags & WDF_LBA) != 0) { 383 aprint_verbose(" LBA addressing\n"); 384 wd->sc_capacity = 385 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 386 wd->sc_params.atap_capacity[0]; 387 } else { 388 aprint_verbose(" chs addressing\n"); 389 wd->sc_capacity = 390 wd->sc_params.atap_cylinders * 391 wd->sc_params.atap_heads * 392 wd->sc_params.atap_sectors; 393 } 394 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 395 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 396 "%d bytes/sect x %llu sectors\n", 397 pbuf, 398 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 399 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 400 wd->sc_params.atap_cylinders, 401 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 402 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 403 404 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 405 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 406 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 407 /* 408 * Initialize and attach the disk structure. 409 */ 410 /* we fill in dk_info later */ 411 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 412 disk_attach(&wd->sc_dk); 413 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 414 #if NRND > 0 415 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 416 RND_TYPE_DISK, 0); 417 #endif 418 419 /* Discover wedges on this disk. */ 420 dkwedge_discover(&wd->sc_dk); 421 422 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 423 aprint_error_dev(self, "couldn't establish power handler\n"); 424 } 425 426 static bool 427 wd_suspend(device_t dv PMF_FN_ARGS) 428 { 429 struct wd_softc *sc = device_private(dv); 430 431 wd_flushcache(sc, AT_WAIT); 432 wd_standby(sc, AT_WAIT); 433 return true; 434 } 435 436 int 437 wdactivate(struct device *self, enum devact act) 438 { 439 int rv = 0; 440 441 switch (act) { 442 case DVACT_ACTIVATE: 443 rv = EOPNOTSUPP; 444 break; 445 446 case DVACT_DEACTIVATE: 447 /* 448 * Nothing to do; we key off the device's DVF_ACTIVATE. 449 */ 450 break; 451 } 452 return (rv); 453 } 454 455 int 456 wddetach(struct device *self, int flags) 457 { 458 struct wd_softc *sc = device_private(self); 459 int s, bmaj, cmaj, i, mn; 460 461 /* locate the major number */ 462 bmaj = bdevsw_lookup_major(&wd_bdevsw); 463 cmaj = cdevsw_lookup_major(&wd_cdevsw); 464 465 /* Nuke the vnodes for any open instances. */ 466 for (i = 0; i < MAXPARTITIONS; i++) { 467 mn = WDMINOR(device_unit(self), i); 468 vdevgone(bmaj, mn, mn, VBLK); 469 vdevgone(cmaj, mn, mn, VCHR); 470 } 471 472 /* Delete all of our wedges. */ 473 dkwedge_delall(&sc->sc_dk); 474 475 s = splbio(); 476 477 /* Kill off any queued buffers. */ 478 bufq_drain(sc->sc_q); 479 480 bufq_free(sc->sc_q); 481 sc->atabus->ata_killpending(sc->drvp); 482 483 splx(s); 484 485 /* Detach disk. */ 486 disk_detach(&sc->sc_dk); 487 disk_destroy(&sc->sc_dk); 488 489 #ifdef WD_SOFTBADSECT 490 /* Clean out the bad sector list */ 491 while (!SLIST_EMPTY(&sc->sc_bslist)) { 492 void *head = SLIST_FIRST(&sc->sc_bslist); 493 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 494 free(head, M_TEMP); 495 } 496 sc->sc_bscount = 0; 497 #endif 498 499 pmf_device_deregister(self); 500 501 #if NRND > 0 502 /* Unhook the entropy source. */ 503 rnd_detach_source(&sc->rnd_source); 504 #endif 505 506 callout_destroy(&sc->sc_restart_ch); 507 508 sc->drvp->drive_flags = 0; /* no drive any more here */ 509 510 return (0); 511 } 512 513 /* 514 * Read/write routine for a buffer. Validates the arguments and schedules the 515 * transfer. Does not wait for the transfer to complete. 516 */ 517 void 518 wdstrategy(struct buf *bp) 519 { 520 struct wd_softc *wd = 521 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 522 struct disklabel *lp = wd->sc_dk.dk_label; 523 daddr_t blkno; 524 int s; 525 526 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 527 DEBUG_XFERS); 528 529 /* Valid request? */ 530 if (bp->b_blkno < 0 || 531 (bp->b_bcount % lp->d_secsize) != 0 || 532 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 533 bp->b_error = EINVAL; 534 goto done; 535 } 536 537 /* If device invalidated (e.g. media change, door open), error. */ 538 if ((wd->sc_flags & WDF_LOADED) == 0) { 539 bp->b_error = EIO; 540 goto done; 541 } 542 543 /* If it's a null transfer, return immediately. */ 544 if (bp->b_bcount == 0) 545 goto done; 546 547 /* 548 * Do bounds checking, adjust transfer. if error, process. 549 * If end of partition, just return. 550 */ 551 if (WDPART(bp->b_dev) == RAW_PART) { 552 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 553 wd->sc_capacity) <= 0) 554 goto done; 555 } else { 556 if (bounds_check_with_label(&wd->sc_dk, bp, 557 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 558 goto done; 559 } 560 561 /* 562 * Now convert the block number to absolute and put it in 563 * terms of the device's logical block size. 564 */ 565 if (lp->d_secsize >= DEV_BSIZE) 566 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 567 else 568 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 569 570 if (WDPART(bp->b_dev) != RAW_PART) 571 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 572 573 bp->b_rawblkno = blkno; 574 575 #ifdef WD_SOFTBADSECT 576 /* 577 * If the transfer about to be attempted contains only a block that 578 * is known to be bad then return an error for the transfer without 579 * even attempting to start a transfer up under the premis that we 580 * will just end up doing more retries for a transfer that will end 581 * up failing again. 582 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 583 */ 584 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 585 struct disk_badsectors *dbs; 586 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 587 588 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 589 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 590 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 591 bp->b_error = EIO; 592 goto done; 593 } 594 } 595 #endif 596 597 /* Queue transfer on drive, activate drive and controller if idle. */ 598 s = splbio(); 599 BUFQ_PUT(wd->sc_q, bp); 600 wdstart(wd); 601 splx(s); 602 return; 603 done: 604 /* Toss transfer; we're done early. */ 605 bp->b_resid = bp->b_bcount; 606 biodone(bp); 607 } 608 609 /* 610 * Queue a drive for I/O. 611 */ 612 void 613 wdstart(void *arg) 614 { 615 struct wd_softc *wd = arg; 616 struct buf *bp = NULL; 617 618 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 619 DEBUG_XFERS); 620 while (wd->openings > 0) { 621 622 /* Is there a buf for us ? */ 623 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 624 return; 625 626 /* 627 * Make the command. First lock the device 628 */ 629 wd->openings--; 630 631 wd->retries = 0; 632 __wdstart(wd, bp); 633 } 634 } 635 636 static void 637 wd_split_mod15_write(struct buf *bp) 638 { 639 struct buf *obp = bp->b_private; 640 struct wd_softc *sc = 641 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 642 643 if (__predict_false(bp->b_error != 0)) { 644 /* 645 * Propagate the error. If this was the first half of 646 * the original transfer, make sure to account for that 647 * in the residual. 648 */ 649 if (bp->b_data == obp->b_data) 650 bp->b_resid += bp->b_bcount; 651 goto done; 652 } 653 654 /* 655 * If this was the second half of the transfer, we're all done! 656 */ 657 if (bp->b_data != obp->b_data) 658 goto done; 659 660 /* 661 * Advance the pointer to the second half and issue that command 662 * using the same opening. 663 */ 664 bp->b_flags = obp->b_flags; 665 bp->b_oflags = obp->b_oflags; 666 bp->b_cflags = obp->b_cflags; 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(NULL, false); 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_dev = bp->b_dev; 714 715 nbp->b_bcount = bp->b_bcount / 2; 716 nbp->b_bufsize = bp->b_bcount / 2; 717 nbp->b_data = bp->b_data; 718 719 nbp->b_blkno = bp->b_blkno; 720 nbp->b_rawblkno = bp->b_rawblkno; 721 722 nbp->b_flags = bp->b_flags; 723 nbp->b_oflags = bp->b_oflags; 724 nbp->b_cflags = bp->b_cflags; 725 nbp->b_iodone = wd_split_mod15_write; 726 727 /* Put ptr to orig buf in b_private and use new buf */ 728 nbp->b_private = bp; 729 730 BIO_COPYPRIO(nbp, bp); 731 732 bp = nbp; 733 } 734 735 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 736 wd->sc_wdc_bio.blkdone =0; 737 wd->sc_bp = bp; 738 /* 739 * If we're retrying, retry in single-sector mode. This will give us 740 * the sector number of the problem, and will eventually allow the 741 * transfer to succeed. 742 */ 743 if (wd->retries >= WDIORETRIES_SINGLE) 744 wd->sc_wdc_bio.flags = ATA_SINGLE; 745 else 746 wd->sc_wdc_bio.flags = 0; 747 if (wd->sc_flags & WDF_LBA48 && 748 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 749 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 750 wd->sc_wdc_bio.flags |= ATA_LBA48; 751 if (wd->sc_flags & WDF_LBA) 752 wd->sc_wdc_bio.flags |= ATA_LBA; 753 if (bp->b_flags & B_READ) 754 wd->sc_wdc_bio.flags |= ATA_READ; 755 wd->sc_wdc_bio.bcount = bp->b_bcount; 756 wd->sc_wdc_bio.databuf = bp->b_data; 757 /* Instrumentation. */ 758 disk_busy(&wd->sc_dk); 759 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 760 case ATACMD_TRY_AGAIN: 761 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 762 break; 763 case ATACMD_QUEUED: 764 case ATACMD_COMPLETE: 765 break; 766 default: 767 panic("__wdstart: bad return code from ata_bio()"); 768 } 769 } 770 771 void 772 wddone(void *v) 773 { 774 struct wd_softc *wd = device_private(v); 775 struct buf *bp = wd->sc_bp; 776 const char *errmsg; 777 int do_perror = 0; 778 int nblks; 779 780 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 781 DEBUG_XFERS); 782 if (bp == NULL) 783 return; 784 bp->b_resid = wd->sc_wdc_bio.bcount; 785 switch (wd->sc_wdc_bio.error) { 786 case ERR_DMA: 787 errmsg = "DMA error"; 788 goto retry; 789 case ERR_DF: 790 errmsg = "device fault"; 791 goto retry; 792 case TIMEOUT: 793 errmsg = "device timeout"; 794 goto retry; 795 case ERR_RESET: 796 errmsg = "channel reset"; 797 goto retry2; 798 case ERROR: 799 /* Don't care about media change bits */ 800 if (wd->sc_wdc_bio.r_error != 0 && 801 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 802 goto noerror; 803 errmsg = "error"; 804 do_perror = 1; 805 if ((wd->sc_wdc_bio.r_error & (WDCE_IDNF | WDCE_ABRT)) && 806 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 807 nblks = wd->sc_wdc_bio.bcount / 808 wd->sc_dk.dk_label->d_secsize; 809 /* 810 * If we get a "id not found" when crossing the 811 * LBA48_THRESHOLD, and the drive is larger than 812 * 128GB, then we can assume the drive has the 813 * LBA48 bug and we switch to LBA48. 814 */ 815 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 816 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 817 wd->sc_capacity > LBA48_THRESHOLD + 1) { 818 errmsg = "LBA48 bug"; 819 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 820 do_perror = 0; 821 goto retry2; 822 } 823 } 824 retry: /* Just reset and retry. Can we do more ? */ 825 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 826 retry2: 827 diskerr(bp, "wd", errmsg, LOG_PRINTF, 828 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 829 if (wd->retries < WDIORETRIES) 830 printf(", retrying"); 831 printf("\n"); 832 if (do_perror) 833 wdperror(wd); 834 if (wd->retries < WDIORETRIES) { 835 wd->retries++; 836 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 837 wdrestart, wd); 838 return; 839 } 840 841 #ifdef WD_SOFTBADSECT 842 /* 843 * Not all errors indicate a failed block but those that do, 844 * put the block on the bad-block list for the device. Only 845 * do this for reads because the drive should do it for writes, 846 * itself, according to Manuel. 847 */ 848 if ((bp->b_flags & B_READ) && 849 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 850 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 851 struct disk_badsectors *dbs; 852 853 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 854 dbs->dbs_min = bp->b_rawblkno; 855 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 856 microtime(&dbs->dbs_failedat); 857 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 858 wd->sc_bscount++; 859 } 860 #endif 861 bp->b_error = EIO; 862 break; 863 case NOERROR: 864 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 865 aprint_error_dev(wd->sc_dev, 866 "soft error (corrected)\n"); 867 break; 868 case ERR_NODEV: 869 bp->b_error = EIO; 870 break; 871 } 872 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 873 (bp->b_flags & B_READ)); 874 #if NRND > 0 875 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 876 #endif 877 /* XXX Yuck, but we don't want to increment openings in this case */ 878 if (__predict_false(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", device_xname(wd->sc_dev)), 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_private(&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 = 1008 device_lookup_private(&wd_cd, WDUNIT(dev)); 1009 int part = WDPART(dev); 1010 1011 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1012 1013 mutex_enter(&wd->sc_dk.dk_openlock); 1014 1015 switch (fmt) { 1016 case S_IFCHR: 1017 wd->sc_dk.dk_copenmask &= ~(1 << part); 1018 break; 1019 case S_IFBLK: 1020 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1021 break; 1022 } 1023 wd->sc_dk.dk_openmask = 1024 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1025 1026 if (wd->sc_dk.dk_openmask == 0) { 1027 wd_flushcache(wd, AT_WAIT); 1028 1029 if (! (wd->sc_flags & WDF_KLABEL)) 1030 wd->sc_flags &= ~WDF_LOADED; 1031 1032 wd->atabus->ata_delref(wd->drvp); 1033 } 1034 1035 mutex_exit(&wd->sc_dk.dk_openlock); 1036 return 0; 1037 } 1038 1039 void 1040 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1041 { 1042 1043 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1044 memset(lp, 0, sizeof(struct disklabel)); 1045 1046 lp->d_secsize = DEV_BSIZE; 1047 lp->d_ntracks = wd->sc_params.atap_heads; 1048 lp->d_nsectors = wd->sc_params.atap_sectors; 1049 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1050 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1051 wd->sc_params.atap_cylinders; 1052 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1053 1054 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1055 lp->d_type = DTYPE_ST506; 1056 else 1057 lp->d_type = DTYPE_ESDI; 1058 1059 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1060 strncpy(lp->d_packname, "fictitious", 16); 1061 if (wd->sc_capacity > UINT32_MAX) 1062 lp->d_secperunit = UINT32_MAX; 1063 else 1064 lp->d_secperunit = wd->sc_capacity; 1065 lp->d_rpm = 3600; 1066 lp->d_interleave = 1; 1067 lp->d_flags = 0; 1068 1069 lp->d_partitions[RAW_PART].p_offset = 0; 1070 lp->d_partitions[RAW_PART].p_size = 1071 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1072 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1073 lp->d_npartitions = RAW_PART + 1; 1074 1075 lp->d_magic = DISKMAGIC; 1076 lp->d_magic2 = DISKMAGIC; 1077 lp->d_checksum = dkcksum(lp); 1078 } 1079 1080 /* 1081 * Fabricate a default disk label, and try to read the correct one. 1082 */ 1083 void 1084 wdgetdisklabel(struct wd_softc *wd) 1085 { 1086 struct disklabel *lp = wd->sc_dk.dk_label; 1087 const char *errstring; 1088 int s; 1089 1090 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1091 1092 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1093 1094 wdgetdefaultlabel(wd, lp); 1095 1096 wd->sc_badsect[0] = -1; 1097 1098 if (wd->drvp->state > RESET) { 1099 s = splbio(); 1100 wd->drvp->drive_flags |= DRIVE_RESET; 1101 splx(s); 1102 } 1103 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1104 RAW_PART), wdstrategy, lp, 1105 wd->sc_dk.dk_cpulabel); 1106 if (errstring) { 1107 /* 1108 * This probably happened because the drive's default 1109 * geometry doesn't match the DOS geometry. We 1110 * assume the DOS geometry is now in the label and try 1111 * again. XXX This is a kluge. 1112 */ 1113 if (wd->drvp->state > RESET) { 1114 s = splbio(); 1115 wd->drvp->drive_flags |= DRIVE_RESET; 1116 splx(s); 1117 } 1118 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1119 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1120 } 1121 if (errstring) { 1122 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1123 return; 1124 } 1125 1126 if (wd->drvp->state > RESET) { 1127 s = splbio(); 1128 wd->drvp->drive_flags |= DRIVE_RESET; 1129 splx(s); 1130 } 1131 #ifdef HAS_BAD144_HANDLING 1132 if ((lp->d_flags & D_BADSECT) != 0) 1133 bad144intern(wd); 1134 #endif 1135 } 1136 1137 void 1138 wdperror(const struct wd_softc *wd) 1139 { 1140 static const char *const errstr0_3[] = {"address mark not found", 1141 "track 0 not found", "aborted command", "media change requested", 1142 "id not found", "media changed", "uncorrectable data error", 1143 "bad block detected"}; 1144 static const char *const errstr4_5[] = { 1145 "obsolete (address mark not found)", 1146 "no media/write protected", "aborted command", 1147 "media change requested", "id not found", "media changed", 1148 "uncorrectable data error", "interface CRC error"}; 1149 const char *const *errstr; 1150 int i; 1151 const char *sep = ""; 1152 1153 const char *devname = device_xname(wd->sc_dev); 1154 struct ata_drive_datas *drvp = wd->drvp; 1155 int errno = wd->sc_wdc_bio.r_error; 1156 1157 if (drvp->ata_vers >= 4) 1158 errstr = errstr4_5; 1159 else 1160 errstr = errstr0_3; 1161 1162 printf("%s: (", devname); 1163 1164 if (errno == 0) 1165 printf("error not notified"); 1166 1167 for (i = 0; i < 8; i++) { 1168 if (errno & (1 << i)) { 1169 printf("%s%s", sep, errstr[i]); 1170 sep = ", "; 1171 } 1172 } 1173 printf(")\n"); 1174 } 1175 1176 int 1177 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1178 { 1179 struct wd_softc *wd = 1180 device_lookup_private(&wd_cd, WDUNIT(dev)); 1181 int error = 0, s; 1182 #ifdef __HAVE_OLD_DISKLABEL 1183 struct disklabel *newlabel = NULL; 1184 #endif 1185 1186 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1187 1188 if ((wd->sc_flags & WDF_LOADED) == 0) 1189 return EIO; 1190 1191 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1192 if (error != EPASSTHROUGH) 1193 return (error); 1194 1195 switch (xfer) { 1196 #ifdef HAS_BAD144_HANDLING 1197 case DIOCSBAD: 1198 if ((flag & FWRITE) == 0) 1199 return EBADF; 1200 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1201 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1202 bad144intern(wd); 1203 return 0; 1204 #endif 1205 #ifdef WD_SOFTBADSECT 1206 case DIOCBSLIST : 1207 { 1208 u_int32_t count, missing, skip; 1209 struct disk_badsecinfo dbsi; 1210 struct disk_badsectors *dbs; 1211 size_t available; 1212 uint8_t *laddr; 1213 1214 dbsi = *(struct disk_badsecinfo *)addr; 1215 missing = wd->sc_bscount; 1216 count = 0; 1217 available = dbsi.dbsi_bufsize; 1218 skip = dbsi.dbsi_skip; 1219 laddr = (uint8_t *)dbsi.dbsi_buffer; 1220 1221 /* 1222 * We start this loop with the expectation that all of the 1223 * entries will be missed and decrement this counter each 1224 * time we either skip over one (already copied out) or 1225 * we actually copy it back to user space. The structs 1226 * holding the bad sector information are copied directly 1227 * back to user space whilst the summary is returned via 1228 * the struct passed in via the ioctl. 1229 */ 1230 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1231 if (skip > 0) { 1232 missing--; 1233 skip--; 1234 continue; 1235 } 1236 if (available < sizeof(*dbs)) 1237 break; 1238 available -= sizeof(*dbs); 1239 copyout(dbs, laddr, sizeof(*dbs)); 1240 laddr += sizeof(*dbs); 1241 missing--; 1242 count++; 1243 } 1244 dbsi.dbsi_left = missing; 1245 dbsi.dbsi_copied = count; 1246 *(struct disk_badsecinfo *)addr = dbsi; 1247 return 0; 1248 } 1249 1250 case DIOCBSFLUSH : 1251 /* Clean out the bad sector list */ 1252 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1253 void *head = SLIST_FIRST(&wd->sc_bslist); 1254 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1255 free(head, M_TEMP); 1256 } 1257 wd->sc_bscount = 0; 1258 return 0; 1259 #endif 1260 case DIOCGDINFO: 1261 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1262 return 0; 1263 #ifdef __HAVE_OLD_DISKLABEL 1264 case ODIOCGDINFO: 1265 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1266 if (newlabel == NULL) 1267 return EIO; 1268 *newlabel = *(wd->sc_dk.dk_label); 1269 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1270 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1271 else 1272 error = ENOTTY; 1273 free(newlabel, M_TEMP); 1274 return error; 1275 #endif 1276 1277 case DIOCGPART: 1278 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1279 ((struct partinfo *)addr)->part = 1280 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1281 return 0; 1282 1283 case DIOCWDINFO: 1284 case DIOCSDINFO: 1285 #ifdef __HAVE_OLD_DISKLABEL 1286 case ODIOCWDINFO: 1287 case ODIOCSDINFO: 1288 #endif 1289 { 1290 struct disklabel *lp; 1291 1292 if ((flag & FWRITE) == 0) 1293 return EBADF; 1294 1295 #ifdef __HAVE_OLD_DISKLABEL 1296 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1297 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1298 if (newlabel == NULL) 1299 return EIO; 1300 memset(newlabel, 0, sizeof newlabel); 1301 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1302 lp = newlabel; 1303 } else 1304 #endif 1305 lp = (struct disklabel *)addr; 1306 1307 mutex_enter(&wd->sc_dk.dk_openlock); 1308 wd->sc_flags |= WDF_LABELLING; 1309 1310 error = setdisklabel(wd->sc_dk.dk_label, 1311 lp, /*wd->sc_dk.dk_openmask : */0, 1312 wd->sc_dk.dk_cpulabel); 1313 if (error == 0) { 1314 if (wd->drvp->state > RESET) { 1315 s = splbio(); 1316 wd->drvp->drive_flags |= DRIVE_RESET; 1317 splx(s); 1318 } 1319 if (xfer == DIOCWDINFO 1320 #ifdef __HAVE_OLD_DISKLABEL 1321 || xfer == ODIOCWDINFO 1322 #endif 1323 ) 1324 error = writedisklabel(WDLABELDEV(dev), 1325 wdstrategy, wd->sc_dk.dk_label, 1326 wd->sc_dk.dk_cpulabel); 1327 } 1328 1329 wd->sc_flags &= ~WDF_LABELLING; 1330 mutex_exit(&wd->sc_dk.dk_openlock); 1331 #ifdef __HAVE_OLD_DISKLABEL 1332 if (newlabel != NULL) 1333 free(newlabel, M_TEMP); 1334 #endif 1335 return error; 1336 } 1337 1338 case DIOCKLABEL: 1339 if (*(int *)addr) 1340 wd->sc_flags |= WDF_KLABEL; 1341 else 1342 wd->sc_flags &= ~WDF_KLABEL; 1343 return 0; 1344 1345 case DIOCWLABEL: 1346 if ((flag & FWRITE) == 0) 1347 return EBADF; 1348 if (*(int *)addr) 1349 wd->sc_flags |= WDF_WLABEL; 1350 else 1351 wd->sc_flags &= ~WDF_WLABEL; 1352 return 0; 1353 1354 case DIOCGDEFLABEL: 1355 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1356 return 0; 1357 #ifdef __HAVE_OLD_DISKLABEL 1358 case ODIOCGDEFLABEL: 1359 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1360 if (newlabel == NULL) 1361 return EIO; 1362 wdgetdefaultlabel(wd, newlabel); 1363 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1364 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1365 else 1366 error = ENOTTY; 1367 free(newlabel, M_TEMP); 1368 return error; 1369 #endif 1370 1371 #ifdef notyet 1372 case DIOCWFORMAT: 1373 if ((flag & FWRITE) == 0) 1374 return EBADF; 1375 { 1376 register struct format_op *fop; 1377 struct iovec aiov; 1378 struct uio auio; 1379 1380 fop = (struct format_op *)addr; 1381 aiov.iov_base = fop->df_buf; 1382 aiov.iov_len = fop->df_count; 1383 auio.uio_iov = &aiov; 1384 auio.uio_iovcnt = 1; 1385 auio.uio_resid = fop->df_count; 1386 auio.uio_offset = 1387 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1388 auio.uio_vmspace = l->l_proc->p_vmspace; 1389 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1390 &auio); 1391 fop->df_count -= auio.uio_resid; 1392 fop->df_reg[0] = wdc->sc_status; 1393 fop->df_reg[1] = wdc->sc_error; 1394 return error; 1395 } 1396 #endif 1397 case DIOCGCACHE: 1398 return wd_getcache(wd, (int *)addr); 1399 1400 case DIOCSCACHE: 1401 return wd_setcache(wd, *(int *)addr); 1402 1403 case DIOCCACHESYNC: 1404 return wd_flushcache(wd, AT_WAIT); 1405 1406 case ATAIOCCOMMAND: 1407 /* 1408 * Make sure this command is (relatively) safe first 1409 */ 1410 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1411 (flag & FWRITE) == 0) 1412 return (EBADF); 1413 { 1414 struct wd_ioctl *wi; 1415 atareq_t *atareq = (atareq_t *) addr; 1416 int error1; 1417 1418 wi = wi_get(); 1419 wi->wi_softc = wd; 1420 wi->wi_atareq = *atareq; 1421 1422 if (atareq->datalen && atareq->flags & 1423 (ATACMD_READ | ATACMD_WRITE)) { 1424 void *tbuf; 1425 if (atareq->datalen < DEV_BSIZE 1426 && atareq->command == WDCC_IDENTIFY) { 1427 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1428 wi->wi_iov.iov_base = tbuf; 1429 wi->wi_iov.iov_len = DEV_BSIZE; 1430 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1431 } else { 1432 tbuf = NULL; 1433 wi->wi_iov.iov_base = atareq->databuf; 1434 wi->wi_iov.iov_len = atareq->datalen; 1435 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1436 } 1437 wi->wi_uio.uio_iov = &wi->wi_iov; 1438 wi->wi_uio.uio_iovcnt = 1; 1439 wi->wi_uio.uio_resid = atareq->datalen; 1440 wi->wi_uio.uio_offset = 0; 1441 wi->wi_uio.uio_rw = 1442 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1443 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1444 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1445 minphys, &wi->wi_uio); 1446 if (tbuf != NULL && error1 == 0) { 1447 error1 = copyout(tbuf, atareq->databuf, 1448 atareq->datalen); 1449 free(tbuf, M_TEMP); 1450 } 1451 } else { 1452 /* No need to call physio if we don't have any 1453 user data */ 1454 wi->wi_bp.b_flags = 0; 1455 wi->wi_bp.b_data = 0; 1456 wi->wi_bp.b_bcount = 0; 1457 wi->wi_bp.b_dev = 0; 1458 wi->wi_bp.b_proc = l->l_proc; 1459 wdioctlstrategy(&wi->wi_bp); 1460 error1 = wi->wi_bp.b_error; 1461 } 1462 *atareq = wi->wi_atareq; 1463 wi_free(wi); 1464 return(error1); 1465 } 1466 1467 case DIOCAWEDGE: 1468 { 1469 struct dkwedge_info *dkw = (void *) addr; 1470 1471 if ((flag & FWRITE) == 0) 1472 return (EBADF); 1473 1474 /* If the ioctl happens here, the parent is us. */ 1475 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1476 return (dkwedge_add(dkw)); 1477 } 1478 1479 case DIOCDWEDGE: 1480 { 1481 struct dkwedge_info *dkw = (void *) addr; 1482 1483 if ((flag & FWRITE) == 0) 1484 return (EBADF); 1485 1486 /* If the ioctl happens here, the parent is us. */ 1487 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1488 return (dkwedge_del(dkw)); 1489 } 1490 1491 case DIOCLWEDGES: 1492 { 1493 struct dkwedge_list *dkwl = (void *) addr; 1494 1495 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1496 } 1497 1498 case DIOCGSTRATEGY: 1499 { 1500 struct disk_strategy *dks = (void *)addr; 1501 1502 s = splbio(); 1503 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1504 sizeof(dks->dks_name)); 1505 splx(s); 1506 dks->dks_paramlen = 0; 1507 1508 return 0; 1509 } 1510 1511 case DIOCSSTRATEGY: 1512 { 1513 struct disk_strategy *dks = (void *)addr; 1514 struct bufq_state *new; 1515 struct bufq_state *old; 1516 1517 if ((flag & FWRITE) == 0) { 1518 return EBADF; 1519 } 1520 if (dks->dks_param != NULL) { 1521 return EINVAL; 1522 } 1523 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1524 error = bufq_alloc(&new, dks->dks_name, 1525 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1526 if (error) { 1527 return error; 1528 } 1529 s = splbio(); 1530 old = wd->sc_q; 1531 bufq_move(new, old); 1532 wd->sc_q = new; 1533 splx(s); 1534 bufq_free(old); 1535 1536 return 0; 1537 } 1538 1539 default: 1540 return ENOTTY; 1541 } 1542 1543 #ifdef DIAGNOSTIC 1544 panic("wdioctl: impossible"); 1545 #endif 1546 } 1547 1548 #ifdef B_FORMAT 1549 int 1550 wdformat(struct buf *bp) 1551 { 1552 1553 bp->b_flags |= B_FORMAT; 1554 return wdstrategy(bp); 1555 } 1556 #endif 1557 1558 int 1559 wdsize(dev_t dev) 1560 { 1561 struct wd_softc *wd; 1562 int part, omask; 1563 int size; 1564 1565 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1566 1567 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1568 if (wd == NULL) 1569 return (-1); 1570 1571 part = WDPART(dev); 1572 omask = wd->sc_dk.dk_openmask & (1 << part); 1573 1574 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1575 return (-1); 1576 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1577 size = -1; 1578 else 1579 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1580 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1581 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1582 return (-1); 1583 return (size); 1584 } 1585 1586 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1587 static int wddoingadump = 0; 1588 static int wddumprecalibrated = 0; 1589 1590 /* 1591 * Dump core after a system crash. 1592 */ 1593 int 1594 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1595 { 1596 struct wd_softc *wd; /* disk unit to do the I/O */ 1597 struct disklabel *lp; /* disk's disklabel */ 1598 int part, err; 1599 int nblks; /* total number of sectors left to write */ 1600 1601 /* Check if recursive dump; if so, punt. */ 1602 if (wddoingadump) 1603 return EFAULT; 1604 wddoingadump = 1; 1605 1606 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1607 if (wd == NULL) 1608 return (ENXIO); 1609 1610 part = WDPART(dev); 1611 1612 /* Convert to disk sectors. Request must be a multiple of size. */ 1613 lp = wd->sc_dk.dk_label; 1614 if ((size % lp->d_secsize) != 0) 1615 return EFAULT; 1616 nblks = size / lp->d_secsize; 1617 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1618 1619 /* Check transfer bounds against partition size. */ 1620 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1621 return EINVAL; 1622 1623 /* Offset block number to start of partition. */ 1624 blkno += lp->d_partitions[part].p_offset; 1625 1626 /* Recalibrate, if first dump transfer. */ 1627 if (wddumprecalibrated == 0) { 1628 wddumprecalibrated = 1; 1629 (*wd->atabus->ata_reset_drive)(wd->drvp, 1630 AT_POLL | AT_RST_EMERG); 1631 wd->drvp->state = RESET; 1632 } 1633 1634 wd->sc_bp = NULL; 1635 wd->sc_wdc_bio.blkno = blkno; 1636 wd->sc_wdc_bio.flags = ATA_POLL; 1637 if (wd->sc_flags & WDF_LBA48 && 1638 (blkno > LBA48_THRESHOLD || 1639 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1640 wd->sc_wdc_bio.flags |= ATA_LBA48; 1641 if (wd->sc_flags & WDF_LBA) 1642 wd->sc_wdc_bio.flags |= ATA_LBA; 1643 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1644 wd->sc_wdc_bio.databuf = va; 1645 #ifndef WD_DUMP_NOT_TRUSTED 1646 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1647 case ATACMD_TRY_AGAIN: 1648 panic("wddump: try again"); 1649 break; 1650 case ATACMD_QUEUED: 1651 panic("wddump: polled command has been queued"); 1652 break; 1653 case ATACMD_COMPLETE: 1654 break; 1655 default: 1656 panic("wddump: unknown atacmd code %d", err); 1657 } 1658 switch(err = wd->sc_wdc_bio.error) { 1659 case TIMEOUT: 1660 printf("wddump: device timed out"); 1661 err = EIO; 1662 break; 1663 case ERR_DF: 1664 printf("wddump: drive fault"); 1665 err = EIO; 1666 break; 1667 case ERR_DMA: 1668 printf("wddump: DMA error"); 1669 err = EIO; 1670 break; 1671 case ERROR: 1672 printf("wddump: "); 1673 wdperror(wd); 1674 err = EIO; 1675 break; 1676 case NOERROR: 1677 err = 0; 1678 break; 1679 default: 1680 panic("wddump: unknown error type %d", err); 1681 } 1682 if (err != 0) { 1683 printf("\n"); 1684 return err; 1685 } 1686 #else /* WD_DUMP_NOT_TRUSTED */ 1687 /* Let's just talk about this first... */ 1688 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1689 unit, va, cylin, head, sector); 1690 delay(500 * 1000); /* half a second */ 1691 #endif 1692 1693 wddoingadump = 0; 1694 return 0; 1695 } 1696 1697 #ifdef HAS_BAD144_HANDLING 1698 /* 1699 * Internalize the bad sector table. 1700 */ 1701 void 1702 bad144intern(struct wd_softc *wd) 1703 { 1704 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1705 struct disklabel *lp = wd->sc_dk.dk_label; 1706 int i = 0; 1707 1708 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1709 1710 for (; i < NBT_BAD; i++) { 1711 if (bt->bt_bad[i].bt_cyl == 0xffff) 1712 break; 1713 wd->sc_badsect[i] = 1714 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1715 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1716 (bt->bt_bad[i].bt_trksec & 0xff); 1717 } 1718 for (; i < NBT_BAD+1; i++) 1719 wd->sc_badsect[i] = -1; 1720 } 1721 #endif 1722 1723 static void 1724 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1725 { 1726 prop_dictionary_t disk_info, odisk_info, geom; 1727 const char *cp; 1728 1729 disk_info = prop_dictionary_create(); 1730 1731 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1732 cp = "ST506"; 1733 else { 1734 /* XXX Should have a case for ATA here, too. */ 1735 cp = "ESDI"; 1736 } 1737 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1738 1739 geom = prop_dictionary_create(); 1740 1741 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1742 1743 prop_dictionary_set_uint32(geom, "sector-size", 1744 DEV_BSIZE /* XXX 512? */); 1745 1746 prop_dictionary_set_uint16(geom, "sectors-per-track", 1747 wd->sc_params.atap_sectors); 1748 1749 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1750 wd->sc_params.atap_heads); 1751 1752 if (wd->sc_flags & WDF_LBA) 1753 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1754 wd->sc_capacity / 1755 (wd->sc_params.atap_heads * 1756 wd->sc_params.atap_sectors)); 1757 else 1758 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1759 wd->sc_params.atap_cylinders); 1760 1761 prop_dictionary_set(disk_info, "geometry", geom); 1762 prop_object_release(geom); 1763 1764 prop_dictionary_set(device_properties(wd->sc_dev), 1765 "disk-info", disk_info); 1766 1767 /* 1768 * Don't release disk_info here; we keep a reference to it. 1769 * disk_detach() will release it when we go away. 1770 */ 1771 1772 odisk_info = wd->sc_dk.dk_info; 1773 wd->sc_dk.dk_info = disk_info; 1774 if (odisk_info) 1775 prop_object_release(odisk_info); 1776 } 1777 1778 int 1779 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1780 { 1781 1782 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1783 case CMD_AGAIN: 1784 return 1; 1785 case CMD_ERR: 1786 /* 1787 * We `know' there's a drive here; just assume it's old. 1788 * This geometry is only used to read the MBR and print a 1789 * (false) attach message. 1790 */ 1791 strncpy(params->atap_model, "ST506", 1792 sizeof params->atap_model); 1793 params->atap_config = ATA_CFG_FIXED; 1794 params->atap_cylinders = 1024; 1795 params->atap_heads = 8; 1796 params->atap_sectors = 17; 1797 params->atap_multi = 1; 1798 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1799 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1800 /* FALLTHROUGH */ 1801 case CMD_OK: 1802 wd_params_to_properties(wd, params); 1803 return 0; 1804 default: 1805 panic("wd_get_params: bad return code from ata_get_params"); 1806 /* NOTREACHED */ 1807 } 1808 } 1809 1810 int 1811 wd_getcache(struct wd_softc *wd, int *bitsp) 1812 { 1813 struct ataparams params; 1814 1815 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1816 return EIO; 1817 if (params.atap_cmd_set1 == 0x0000 || 1818 params.atap_cmd_set1 == 0xffff || 1819 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1820 *bitsp = 0; 1821 return 0; 1822 } 1823 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1824 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1825 *bitsp |= DKCACHE_WRITE; 1826 1827 return 0; 1828 } 1829 1830 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1831 1832 int 1833 wd_setcache(struct wd_softc *wd, int bits) 1834 { 1835 struct ataparams params; 1836 struct ata_command ata_c; 1837 1838 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1839 return EIO; 1840 1841 if (params.atap_cmd_set1 == 0x0000 || 1842 params.atap_cmd_set1 == 0xffff || 1843 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1844 return EOPNOTSUPP; 1845 1846 if ((bits & DKCACHE_READ) == 0 || 1847 (bits & DKCACHE_SAVE) != 0) 1848 return EOPNOTSUPP; 1849 1850 memset(&ata_c, 0, sizeof(struct ata_command)); 1851 ata_c.r_command = SET_FEATURES; 1852 ata_c.r_st_bmask = 0; 1853 ata_c.r_st_pmask = 0; 1854 ata_c.timeout = 30000; /* 30s timeout */ 1855 ata_c.flags = AT_WAIT; 1856 if (bits & DKCACHE_WRITE) 1857 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1858 else 1859 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1860 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1861 aprint_error_dev(wd->sc_dev, 1862 "wd_setcache command not complete\n"); 1863 return EIO; 1864 } 1865 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1866 char sbuf[sizeof(at_errbits) + 64]; 1867 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1868 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1869 return EIO; 1870 } 1871 return 0; 1872 } 1873 1874 static int 1875 wd_standby(struct wd_softc *wd, int flags) 1876 { 1877 struct ata_command ata_c; 1878 1879 memset(&ata_c, 0, sizeof(struct ata_command)); 1880 ata_c.r_command = WDCC_STANDBY_IMMED; 1881 ata_c.r_st_bmask = WDCS_DRDY; 1882 ata_c.r_st_pmask = WDCS_DRDY; 1883 ata_c.flags = flags; 1884 ata_c.timeout = 30000; /* 30s timeout */ 1885 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1886 aprint_error_dev(wd->sc_dev, 1887 "standby immediate command didn't complete\n"); 1888 return EIO; 1889 } 1890 if (ata_c.flags & AT_ERROR) { 1891 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1892 return ENODEV; 1893 } 1894 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1895 char sbuf[sizeof(at_errbits) + 64]; 1896 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1897 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1898 return EIO; 1899 } 1900 return 0; 1901 } 1902 1903 int 1904 wd_flushcache(struct wd_softc *wd, int flags) 1905 { 1906 struct ata_command ata_c; 1907 1908 /* 1909 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1910 * only ATA-2 and still support it. 1911 */ 1912 if (wd->drvp->ata_vers < 4 && 1913 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1914 wd->sc_params.atap_cmd_set2 == 0xffff)) 1915 return ENODEV; 1916 memset(&ata_c, 0, sizeof(struct ata_command)); 1917 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1918 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1919 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1920 else 1921 ata_c.r_command = WDCC_FLUSHCACHE; 1922 ata_c.r_st_bmask = WDCS_DRDY; 1923 ata_c.r_st_pmask = WDCS_DRDY; 1924 ata_c.flags = flags; 1925 ata_c.timeout = 30000; /* 30s timeout */ 1926 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1927 aprint_error_dev(wd->sc_dev, 1928 "flush cache command didn't complete\n"); 1929 return EIO; 1930 } 1931 if (ata_c.flags & AT_ERROR) { 1932 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1933 return ENODEV; 1934 } 1935 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1936 char sbuf[sizeof(at_errbits) + 64]; 1937 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1938 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1939 sbuf); 1940 return EIO; 1941 } 1942 return 0; 1943 } 1944 1945 bool 1946 wd_shutdown(device_t dev, int how) 1947 { 1948 1949 struct wd_softc *wd = device_private(dev); 1950 wd_flushcache(wd, AT_POLL); 1951 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1952 wd_standby(wd, AT_POLL); 1953 return true; 1954 } 1955 1956 /* 1957 * Allocate space for a ioctl queue structure. Mostly taken from 1958 * scsipi_ioctl.c 1959 */ 1960 struct wd_ioctl * 1961 wi_get(void) 1962 { 1963 struct wd_ioctl *wi; 1964 int s; 1965 1966 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1967 buf_init(&wi->wi_bp); 1968 s = splbio(); 1969 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1970 splx(s); 1971 return (wi); 1972 } 1973 1974 /* 1975 * Free an ioctl structure and remove it from our list 1976 */ 1977 1978 void 1979 wi_free(struct wd_ioctl *wi) 1980 { 1981 int s; 1982 1983 s = splbio(); 1984 LIST_REMOVE(wi, wi_list); 1985 splx(s); 1986 buf_destroy(&wi->wi_bp); 1987 free(wi, M_TEMP); 1988 } 1989 1990 /* 1991 * Find a wd_ioctl structure based on the struct buf. 1992 */ 1993 1994 struct wd_ioctl * 1995 wi_find(struct buf *bp) 1996 { 1997 struct wd_ioctl *wi; 1998 int s; 1999 2000 s = splbio(); 2001 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 2002 if (bp == &wi->wi_bp) 2003 break; 2004 splx(s); 2005 return (wi); 2006 } 2007 2008 /* 2009 * Ioctl pseudo strategy routine 2010 * 2011 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2012 * happens here is: 2013 * 2014 * - wdioctl() queues a wd_ioctl structure. 2015 * 2016 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2017 * user space I/O is required. If physio() is called, physio() eventually 2018 * calls wdioctlstrategy(). 2019 * 2020 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2021 * to perform the actual command 2022 * 2023 * The reason for the use of the pseudo strategy routine is because 2024 * when doing I/O to/from user space, physio _really_ wants to be in 2025 * the loop. We could put the entire buffer into the ioctl request 2026 * structure, but that won't scale if we want to do things like download 2027 * microcode. 2028 */ 2029 2030 void 2031 wdioctlstrategy(struct buf *bp) 2032 { 2033 struct wd_ioctl *wi; 2034 struct ata_command ata_c; 2035 int error = 0; 2036 2037 wi = wi_find(bp); 2038 if (wi == NULL) { 2039 printf("wdioctlstrategy: " 2040 "No matching ioctl request found in queue\n"); 2041 error = EINVAL; 2042 goto bad; 2043 } 2044 2045 memset(&ata_c, 0, sizeof(ata_c)); 2046 2047 /* 2048 * Abort if physio broke up the transfer 2049 */ 2050 2051 if (bp->b_bcount != wi->wi_atareq.datalen) { 2052 printf("physio split wd ioctl request... cannot proceed\n"); 2053 error = EIO; 2054 goto bad; 2055 } 2056 2057 /* 2058 * Abort if we didn't get a buffer size that was a multiple of 2059 * our sector size (or was larger than NBBY) 2060 */ 2061 2062 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2063 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2064 (1 << NBBY)) { 2065 error = EINVAL; 2066 goto bad; 2067 } 2068 2069 /* 2070 * Make sure a timeout was supplied in the ioctl request 2071 */ 2072 2073 if (wi->wi_atareq.timeout == 0) { 2074 error = EINVAL; 2075 goto bad; 2076 } 2077 2078 if (wi->wi_atareq.flags & ATACMD_READ) 2079 ata_c.flags |= AT_READ; 2080 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2081 ata_c.flags |= AT_WRITE; 2082 2083 if (wi->wi_atareq.flags & ATACMD_READREG) 2084 ata_c.flags |= AT_READREG; 2085 2086 ata_c.flags |= AT_WAIT; 2087 2088 ata_c.timeout = wi->wi_atareq.timeout; 2089 ata_c.r_command = wi->wi_atareq.command; 2090 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2091 ata_c.r_cyl = wi->wi_atareq.cylinder; 2092 ata_c.r_sector = wi->wi_atareq.sec_num; 2093 ata_c.r_count = wi->wi_atareq.sec_count; 2094 ata_c.r_features = wi->wi_atareq.features; 2095 ata_c.r_st_bmask = WDCS_DRDY; 2096 ata_c.r_st_pmask = WDCS_DRDY; 2097 ata_c.data = wi->wi_bp.b_data; 2098 ata_c.bcount = wi->wi_bp.b_bcount; 2099 2100 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2101 != ATACMD_COMPLETE) { 2102 wi->wi_atareq.retsts = ATACMD_ERROR; 2103 goto bad; 2104 } 2105 2106 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2107 if (ata_c.flags & AT_ERROR) { 2108 wi->wi_atareq.retsts = ATACMD_ERROR; 2109 wi->wi_atareq.error = ata_c.r_error; 2110 } else if (ata_c.flags & AT_DF) 2111 wi->wi_atareq.retsts = ATACMD_DF; 2112 else 2113 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2114 } else { 2115 wi->wi_atareq.retsts = ATACMD_OK; 2116 if (wi->wi_atareq.flags & ATACMD_READREG) { 2117 wi->wi_atareq.head = ata_c.r_head ; 2118 wi->wi_atareq.cylinder = ata_c.r_cyl; 2119 wi->wi_atareq.sec_num = ata_c.r_sector; 2120 wi->wi_atareq.sec_count = ata_c.r_count; 2121 wi->wi_atareq.features = ata_c.r_features; 2122 wi->wi_atareq.error = ata_c.r_error; 2123 } 2124 } 2125 2126 bp->b_error = 0; 2127 biodone(bp); 2128 return; 2129 bad: 2130 bp->b_error = error; 2131 biodone(bp); 2132 } 2133
Indexes created Mon Sep 29 18:09:42 GMT 2025