wd.c revision 1.358
1 /* $NetBSD: wd.c,v 1.358 2008/02/29 06:38:28 dyoung 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 1.358 2008/02/29 06:38:28 dyoung Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/reboot.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <sys/intr.h> 98 #include <sys/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #include <prop/proplib.h> 108 109 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 110 111 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 112 #define WDIORETRIES 5 /* number of retries before giving up */ 113 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 114 115 #define WDUNIT(dev) DISKUNIT(dev) 116 #define WDPART(dev) DISKPART(dev) 117 #define WDMINOR(unit, part) DISKMINOR(unit, part) 118 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 119 120 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 121 122 #define DEBUG_INTR 0x01 123 #define DEBUG_XFERS 0x02 124 #define DEBUG_STATUS 0x04 125 #define DEBUG_FUNCS 0x08 126 #define DEBUG_PROBE 0x10 127 #ifdef ATADEBUG 128 int wdcdebug_wd_mask = 0x0; 129 #define ATADEBUG_PRINT(args, level) \ 130 if (wdcdebug_wd_mask & (level)) \ 131 printf args 132 #else 133 #define ATADEBUG_PRINT(args, level) 134 #endif 135 136 int wdprobe(struct device *, struct cfdata *, void *); 137 void wdattach(struct device *, struct device *, void *); 138 int wddetach(struct device *, int); 139 int wdactivate(struct device *, enum devact); 140 int wdprint(void *, char *); 141 void wdperror(const struct wd_softc *); 142 143 static bool wd_suspend(device_t PMF_FN_PROTO); 144 static int wd_standby(struct wd_softc *, int); 145 146 CFATTACH_DECL(wd, sizeof(struct wd_softc), 147 wdprobe, wdattach, wddetach, wdactivate); 148 149 extern struct cfdriver wd_cd; 150 151 dev_type_open(wdopen); 152 dev_type_close(wdclose); 153 dev_type_read(wdread); 154 dev_type_write(wdwrite); 155 dev_type_ioctl(wdioctl); 156 dev_type_strategy(wdstrategy); 157 dev_type_dump(wddump); 158 dev_type_size(wdsize); 159 160 const struct bdevsw wd_bdevsw = { 161 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 162 }; 163 164 const struct cdevsw wd_cdevsw = { 165 wdopen, wdclose, wdread, wdwrite, wdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 /* 170 * Glue necessary to hook WDCIOCCOMMAND into physio 171 */ 172 173 struct wd_ioctl { 174 LIST_ENTRY(wd_ioctl) wi_list; 175 struct buf wi_bp; 176 struct uio wi_uio; 177 struct iovec wi_iov; 178 atareq_t wi_atareq; 179 struct wd_softc *wi_softc; 180 }; 181 182 LIST_HEAD(, wd_ioctl) wi_head; 183 184 struct wd_ioctl *wi_find(struct buf *); 185 void wi_free(struct wd_ioctl *); 186 struct wd_ioctl *wi_get(void); 187 void wdioctlstrategy(struct buf *); 188 189 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 190 void wdgetdisklabel(struct wd_softc *); 191 void wdstart(void *); 192 void __wdstart(struct wd_softc*, struct buf *); 193 void wdrestart(void *); 194 void wddone(void *); 195 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 196 int wd_flushcache(struct wd_softc *, int); 197 bool wd_shutdown(device_t, int); 198 199 int wd_getcache(struct wd_softc *, int *); 200 int wd_setcache(struct wd_softc *, int); 201 202 struct dkdriver wddkdriver = { wdstrategy, minphys }; 203 204 #ifdef HAS_BAD144_HANDLING 205 static void bad144intern(struct wd_softc *); 206 #endif 207 208 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 209 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 210 211 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 212 213 /* 214 * Quirk table for IDE drives. Put more-specific matches first, since 215 * a simple globbing routine is used for matching. 216 */ 217 static const struct wd_quirk { 218 const char *wdq_match; /* inquiry pattern to match */ 219 int wdq_quirks; /* drive quirks */ 220 } wd_quirk_table[] = { 221 /* 222 * Some Seagate S-ATA drives have a PHY which can get confused 223 * with the way data is packetized by some S-ATA controllers. 224 * 225 * The work-around is to split in two any write transfer whose 226 * sector count % 15 == 1 (assuming 512 byte sectors). 227 * 228 * XXX This is an incomplete list. There are at least a couple 229 * XXX more model numbers. If you have trouble with such transfers 230 * XXX (8K is the most common) on Seagate S-ATA drives, please 231 * XXX notify thorpej (at) NetBSD.org. 232 */ 233 { "ST3120023AS", 234 WD_QUIRK_SPLIT_MOD15_WRITE }, 235 { "ST380023AS", 236 WD_QUIRK_SPLIT_MOD15_WRITE }, 237 238 /* 239 * These seagate drives seems to have issue addressing sector 0xfffffff 240 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 241 * LBA48 242 * Note that we can't just change the code to always use LBA48 for 243 * sector 0xfffffff, because this would break valid and working 244 * setups using LBA48 drives on non-LBA48-capable controllers 245 * (and it's hard to get a list of such controllers) 246 */ 247 { "ST3160021A*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { "ST3160811A*", 250 WD_QUIRK_FORCE_LBA48 }, 251 { "ST3160812A*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { "ST3160023A*", 254 WD_QUIRK_FORCE_LBA48 }, 255 { "ST3160827A*", 256 WD_QUIRK_FORCE_LBA48 }, 257 /* Attempt to catch all seagate drives larger than 200GB */ 258 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 259 WD_QUIRK_FORCE_LBA48 }, 260 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 261 WD_QUIRK_FORCE_LBA48 }, 262 { NULL, 263 0 } 264 }; 265 266 static const struct wd_quirk * 267 wd_lookup_quirks(const char *name) 268 { 269 const struct wd_quirk *wdq; 270 const char *estr; 271 272 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 273 /* 274 * We only want exact matches (which include matches 275 * against globbing characters). 276 */ 277 if (pmatch(name, wdq->wdq_match, &estr) == 2) 278 return (wdq); 279 } 280 return (NULL); 281 } 282 283 int 284 wdprobe(struct device *parent, struct cfdata *match, void *aux) 285 { 286 struct ata_device *adev = aux; 287 288 if (adev == NULL) 289 return 0; 290 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 291 return 0; 292 293 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 294 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 295 return 0; 296 return 1; 297 } 298 299 void 300 wdattach(struct device *parent, struct device *self, void *aux) 301 { 302 struct wd_softc *wd = (void *)self; 303 struct ata_device *adev= aux; 304 int i, blank; 305 char tbuf[41], pbuf[9], c, *p, *q; 306 const struct wd_quirk *wdq; 307 308 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 309 callout_init(&wd->sc_restart_ch, 0); 310 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 311 #ifdef WD_SOFTBADSECT 312 SLIST_INIT(&wd->sc_bslist); 313 #endif 314 wd->atabus = adev->adev_bustype; 315 wd->openings = adev->adev_openings; 316 wd->drvp = adev->adev_drv_data; 317 318 wd->drvp->drv_done = wddone; 319 wd->drvp->drv_softc = &wd->sc_dev; 320 321 aprint_naive("\n"); 322 323 /* read our drive info */ 324 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 325 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 326 return; 327 } 328 329 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 330 i < sizeof(wd->sc_params.atap_model); i++) { 331 c = *p++; 332 if (c == '\0') 333 break; 334 if (c != ' ') { 335 if (blank) { 336 *q++ = ' '; 337 blank = 0; 338 } 339 *q++ = c; 340 } else 341 blank = 1; 342 } 343 *q++ = '\0'; 344 345 aprint_normal(": <%s>\n", tbuf); 346 347 wdq = wd_lookup_quirks(tbuf); 348 if (wdq != NULL) 349 wd->sc_quirks = wdq->wdq_quirks; 350 351 if (wd->sc_quirks != 0) { 352 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 353 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 354 sbuf, sizeof(sbuf)); 355 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 356 } 357 358 if ((wd->sc_params.atap_multi & 0xff) > 1) { 359 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 360 } else { 361 wd->sc_multi = 1; 362 } 363 364 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 365 wd->sc_dev.dv_xname, wd->sc_multi); 366 367 /* 48-bit LBA addressing */ 368 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 369 wd->sc_flags |= WDF_LBA48; 370 371 /* Prior to ATA-4, LBA was optional. */ 372 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 373 wd->sc_flags |= WDF_LBA; 374 #if 0 375 /* ATA-4 requires LBA. */ 376 if (wd->sc_params.atap_ataversion != 0xffff && 377 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 378 wd->sc_flags |= WDF_LBA; 379 #endif 380 381 if ((wd->sc_flags & WDF_LBA48) != 0) { 382 aprint_verbose(" LBA48 addressing\n"); 383 wd->sc_capacity = 384 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 385 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 386 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 387 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 388 } else if ((wd->sc_flags & WDF_LBA) != 0) { 389 aprint_verbose(" LBA addressing\n"); 390 wd->sc_capacity = 391 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 392 wd->sc_params.atap_capacity[0]; 393 } else { 394 aprint_verbose(" chs addressing\n"); 395 wd->sc_capacity = 396 wd->sc_params.atap_cylinders * 397 wd->sc_params.atap_heads * 398 wd->sc_params.atap_sectors; 399 } 400 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 401 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 402 "%d bytes/sect x %llu sectors\n", 403 self->dv_xname, pbuf, 404 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 405 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 406 wd->sc_params.atap_cylinders, 407 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 408 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 409 410 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 411 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 412 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 413 /* 414 * Initialize and attach the disk structure. 415 */ 416 /* we fill in dk_info later */ 417 disk_init(&wd->sc_dk, wd->sc_dev.dv_xname, &wddkdriver); 418 disk_attach(&wd->sc_dk); 419 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 420 #if NRND > 0 421 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 422 RND_TYPE_DISK, 0); 423 #endif 424 425 /* Discover wedges on this disk. */ 426 dkwedge_discover(&wd->sc_dk); 427 428 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 429 aprint_error_dev(self, "couldn't establish power handler\n"); 430 } 431 432 static bool 433 wd_suspend(device_t dv PMF_FN_ARGS) 434 { 435 struct wd_softc *sc = device_private(dv); 436 437 wd_flushcache(sc, AT_WAIT); 438 wd_standby(sc, AT_WAIT); 439 return true; 440 } 441 442 int 443 wdactivate(struct device *self, enum devact act) 444 { 445 int rv = 0; 446 447 switch (act) { 448 case DVACT_ACTIVATE: 449 rv = EOPNOTSUPP; 450 break; 451 452 case DVACT_DEACTIVATE: 453 /* 454 * Nothing to do; we key off the device's DVF_ACTIVATE. 455 */ 456 break; 457 } 458 return (rv); 459 } 460 461 int 462 wddetach(struct device *self, int flags) 463 { 464 struct wd_softc *sc = (struct wd_softc *)self; 465 int s, bmaj, cmaj, i, mn; 466 467 /* locate the major number */ 468 bmaj = bdevsw_lookup_major(&wd_bdevsw); 469 cmaj = cdevsw_lookup_major(&wd_cdevsw); 470 471 /* Nuke the vnodes for any open instances. */ 472 for (i = 0; i < MAXPARTITIONS; i++) { 473 mn = WDMINOR(device_unit(self), i); 474 vdevgone(bmaj, mn, mn, VBLK); 475 vdevgone(cmaj, mn, mn, VCHR); 476 } 477 478 /* Delete all of our wedges. */ 479 dkwedge_delall(&sc->sc_dk); 480 481 s = splbio(); 482 483 /* Kill off any queued buffers. */ 484 bufq_drain(sc->sc_q); 485 486 bufq_free(sc->sc_q); 487 sc->atabus->ata_killpending(sc->drvp); 488 489 splx(s); 490 491 /* Detach disk. */ 492 disk_detach(&sc->sc_dk); 493 494 #ifdef WD_SOFTBADSECT 495 /* Clean out the bad sector list */ 496 while (!SLIST_EMPTY(&sc->sc_bslist)) { 497 void *head = SLIST_FIRST(&sc->sc_bslist); 498 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 499 free(head, M_TEMP); 500 } 501 sc->sc_bscount = 0; 502 #endif 503 504 pmf_device_deregister(self); 505 506 #if NRND > 0 507 /* Unhook the entropy source. */ 508 rnd_detach_source(&sc->rnd_source); 509 #endif 510 511 sc->drvp->drive_flags = 0; /* no drive any more here */ 512 513 return (0); 514 } 515 516 /* 517 * Read/write routine for a buffer. Validates the arguments and schedules the 518 * transfer. Does not wait for the transfer to complete. 519 */ 520 void 521 wdstrategy(struct buf *bp) 522 { 523 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 524 struct disklabel *lp = wd->sc_dk.dk_label; 525 daddr_t blkno; 526 int s; 527 528 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 529 DEBUG_XFERS); 530 531 /* Valid request? */ 532 if (bp->b_blkno < 0 || 533 (bp->b_bcount % lp->d_secsize) != 0 || 534 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 535 bp->b_error = EINVAL; 536 goto done; 537 } 538 539 /* If device invalidated (e.g. media change, door open), error. */ 540 if ((wd->sc_flags & WDF_LOADED) == 0) { 541 bp->b_error = EIO; 542 goto done; 543 } 544 545 /* If it's a null transfer, return immediately. */ 546 if (bp->b_bcount == 0) 547 goto done; 548 549 /* 550 * Do bounds checking, adjust transfer. if error, process. 551 * If end of partition, just return. 552 */ 553 if (WDPART(bp->b_dev) == RAW_PART) { 554 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 555 wd->sc_capacity) <= 0) 556 goto done; 557 } else { 558 if (bounds_check_with_label(&wd->sc_dk, bp, 559 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 560 goto done; 561 } 562 563 /* 564 * Now convert the block number to absolute and put it in 565 * terms of the device's logical block size. 566 */ 567 if (lp->d_secsize >= DEV_BSIZE) 568 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 569 else 570 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 571 572 if (WDPART(bp->b_dev) != RAW_PART) 573 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 574 575 bp->b_rawblkno = blkno; 576 577 #ifdef WD_SOFTBADSECT 578 /* 579 * If the transfer about to be attempted contains only a block that 580 * is known to be bad then return an error for the transfer without 581 * even attempting to start a transfer up under the premis that we 582 * will just end up doing more retries for a transfer that will end 583 * up failing again. 584 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 585 */ 586 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 587 struct disk_badsectors *dbs; 588 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 589 590 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 591 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 592 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 593 bp->b_error = EIO; 594 goto done; 595 } 596 } 597 #endif 598 599 /* Queue transfer on drive, activate drive and controller if idle. */ 600 s = splbio(); 601 BUFQ_PUT(wd->sc_q, bp); 602 wdstart(wd); 603 splx(s); 604 return; 605 done: 606 /* Toss transfer; we're done early. */ 607 bp->b_resid = bp->b_bcount; 608 biodone(bp); 609 } 610 611 /* 612 * Queue a drive for I/O. 613 */ 614 void 615 wdstart(void *arg) 616 { 617 struct wd_softc *wd = arg; 618 struct buf *bp = NULL; 619 620 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 621 DEBUG_XFERS); 622 while (wd->openings > 0) { 623 624 /* Is there a buf for us ? */ 625 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 626 return; 627 628 /* 629 * Make the command. First lock the device 630 */ 631 wd->openings--; 632 633 wd->retries = 0; 634 __wdstart(wd, bp); 635 } 636 } 637 638 static void 639 wd_split_mod15_write(struct buf *bp) 640 { 641 struct buf *obp = bp->b_private; 642 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 643 644 if (__predict_false(bp->b_error != 0)) { 645 /* 646 * Propagate the error. If this was the first half of 647 * the original transfer, make sure to account for that 648 * in the residual. 649 */ 650 if (bp->b_data == obp->b_data) 651 bp->b_resid += bp->b_bcount; 652 goto done; 653 } 654 655 /* 656 * If this was the second half of the transfer, we're all done! 657 */ 658 if (bp->b_data != obp->b_data) 659 goto done; 660 661 /* 662 * Advance the pointer to the second half and issue that command 663 * using the same opening. 664 */ 665 bp->b_flags = obp->b_flags; 666 bp->b_oflags = obp->b_oflags; 667 bp->b_cflags = obp->b_cflags; 668 bp->b_data = (char *)bp->b_data + bp->b_bcount; 669 bp->b_blkno += (bp->b_bcount / 512); 670 bp->b_rawblkno += (bp->b_bcount / 512); 671 __wdstart(sc, bp); 672 return; 673 674 done: 675 obp->b_error = bp->b_error; 676 obp->b_resid = bp->b_resid; 677 putiobuf(bp); 678 biodone(obp); 679 sc->openings++; 680 /* wddone() will call wdstart() */ 681 } 682 683 void 684 __wdstart(struct wd_softc *wd, struct buf *bp) 685 { 686 687 /* 688 * Deal with the "split mod15 write" quirk. We just divide the 689 * transfer in two, doing the first half and then then second half 690 * with the same command opening. 691 * 692 * Note we MUST do this here, because we can't let insertion 693 * into the bufq cause the transfers to be re-merged. 694 */ 695 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 696 (bp->b_flags & B_READ) == 0 && 697 bp->b_bcount > 512 && 698 ((bp->b_bcount / 512) % 15) == 1)) { 699 struct buf *nbp; 700 701 /* already at splbio */ 702 nbp = getiobuf(NULL, false); 703 if (__predict_false(nbp == NULL)) { 704 /* No memory -- fail the iop. */ 705 bp->b_error = ENOMEM; 706 bp->b_resid = bp->b_bcount; 707 biodone(bp); 708 wd->openings++; 709 return; 710 } 711 712 nbp->b_error = 0; 713 nbp->b_proc = bp->b_proc; 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; 724 nbp->b_oflags = bp->b_oflags; 725 nbp->b_cflags = bp->b_cflags; 726 nbp->b_iodone = wd_split_mod15_write; 727 728 /* Put ptr to orig buf in b_private and use new buf */ 729 nbp->b_private = bp; 730 731 BIO_COPYPRIO(nbp, bp); 732 733 bp = nbp; 734 } 735 736 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 737 wd->sc_wdc_bio.blkdone =0; 738 wd->sc_bp = bp; 739 /* 740 * If we're retrying, retry in single-sector mode. This will give us 741 * the sector number of the problem, and will eventually allow the 742 * transfer to succeed. 743 */ 744 if (wd->retries >= WDIORETRIES_SINGLE) 745 wd->sc_wdc_bio.flags = ATA_SINGLE; 746 else 747 wd->sc_wdc_bio.flags = 0; 748 if (wd->sc_flags & WDF_LBA48 && 749 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 750 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 751 wd->sc_wdc_bio.flags |= ATA_LBA48; 752 if (wd->sc_flags & WDF_LBA) 753 wd->sc_wdc_bio.flags |= ATA_LBA; 754 if (bp->b_flags & B_READ) 755 wd->sc_wdc_bio.flags |= ATA_READ; 756 wd->sc_wdc_bio.bcount = bp->b_bcount; 757 wd->sc_wdc_bio.databuf = bp->b_data; 758 /* Instrumentation. */ 759 disk_busy(&wd->sc_dk); 760 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 761 case ATACMD_TRY_AGAIN: 762 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 763 break; 764 case ATACMD_QUEUED: 765 case ATACMD_COMPLETE: 766 break; 767 default: 768 panic("__wdstart: bad return code from ata_bio()"); 769 } 770 } 771 772 void 773 wddone(void *v) 774 { 775 struct wd_softc *wd = v; 776 struct buf *bp = wd->sc_bp; 777 const char *errmsg; 778 int do_perror = 0; 779 int nblks; 780 781 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 782 DEBUG_XFERS); 783 if (bp == NULL) 784 return; 785 bp->b_resid = wd->sc_wdc_bio.bcount; 786 switch (wd->sc_wdc_bio.error) { 787 case ERR_DMA: 788 errmsg = "DMA error"; 789 goto retry; 790 case ERR_DF: 791 errmsg = "device fault"; 792 goto retry; 793 case TIMEOUT: 794 errmsg = "device timeout"; 795 goto retry; 796 case ERR_RESET: 797 errmsg = "channel reset"; 798 goto retry2; 799 case ERROR: 800 /* Don't care about media change bits */ 801 if (wd->sc_wdc_bio.r_error != 0 && 802 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 803 goto noerror; 804 errmsg = "error"; 805 do_perror = 1; 806 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 807 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 808 nblks = wd->sc_wdc_bio.bcount / 809 wd->sc_dk.dk_label->d_secsize; 810 /* 811 * If we get a "id not found" when crossing the 812 * LBA48_THRESHOLD, and the drive is larger than 813 * 128GB, then we can assume the drive has the 814 * LBA48 bug and we switch to LBA48. 815 */ 816 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 817 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 818 wd->sc_capacity > LBA48_THRESHOLD + 1) { 819 errmsg = "LBA48 bug"; 820 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 821 do_perror = 0; 822 goto retry2; 823 } 824 } 825 retry: /* Just reset and retry. Can we do more ? */ 826 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 827 retry2: 828 diskerr(bp, "wd", errmsg, LOG_PRINTF, 829 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 830 if (wd->retries < WDIORETRIES) 831 printf(", retrying"); 832 printf("\n"); 833 if (do_perror) 834 wdperror(wd); 835 if (wd->retries < WDIORETRIES) { 836 wd->retries++; 837 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 838 wdrestart, wd); 839 return; 840 } 841 842 #ifdef WD_SOFTBADSECT 843 /* 844 * Not all errors indicate a failed block but those that do, 845 * put the block on the bad-block list for the device. Only 846 * do this for reads because the drive should do it for writes, 847 * itself, according to Manuel. 848 */ 849 if ((bp->b_flags & B_READ) && 850 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 851 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 852 struct disk_badsectors *dbs; 853 854 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 855 dbs->dbs_min = bp->b_rawblkno; 856 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 857 microtime(&dbs->dbs_failedat); 858 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 859 wd->sc_bscount++; 860 } 861 #endif 862 bp->b_error = EIO; 863 break; 864 case NOERROR: 865 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 866 printf("%s: soft error (corrected)\n", 867 wd->sc_dev.dv_xname); 868 break; 869 case ERR_NODEV: 870 bp->b_error = EIO; 871 break; 872 } 873 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 874 (bp->b_flags & B_READ)); 875 #if NRND > 0 876 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 877 #endif 878 /* XXX Yuck, but we don't want to increment openings in this case */ 879 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 880 biodone(bp); 881 else { 882 biodone(bp); 883 wd->openings++; 884 } 885 wdstart(wd); 886 } 887 888 void 889 wdrestart(void *v) 890 { 891 struct wd_softc *wd = v; 892 struct buf *bp = wd->sc_bp; 893 int s; 894 895 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 896 DEBUG_XFERS); 897 s = splbio(); 898 __wdstart(v, bp); 899 splx(s); 900 } 901 902 int 903 wdread(dev_t dev, struct uio *uio, int flags) 904 { 905 906 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 907 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 908 } 909 910 int 911 wdwrite(dev_t dev, struct uio *uio, int flags) 912 { 913 914 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 915 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 916 } 917 918 int 919 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 920 { 921 struct wd_softc *wd; 922 int part, error; 923 924 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 925 wd = device_lookup(&wd_cd, WDUNIT(dev)); 926 if (wd == NULL) 927 return (ENXIO); 928 929 if (! device_is_active(&wd->sc_dev)) 930 return (ENODEV); 931 932 part = WDPART(dev); 933 934 mutex_enter(&wd->sc_dk.dk_openlock); 935 936 /* 937 * If there are wedges, and this is not RAW_PART, then we 938 * need to fail. 939 */ 940 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 941 error = EBUSY; 942 goto bad1; 943 } 944 945 /* 946 * If this is the first open of this device, add a reference 947 * to the adapter. 948 */ 949 if (wd->sc_dk.dk_openmask == 0 && 950 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 951 goto bad1; 952 953 if (wd->sc_dk.dk_openmask != 0) { 954 /* 955 * If any partition is open, but the disk has been invalidated, 956 * disallow further opens. 957 */ 958 if ((wd->sc_flags & WDF_LOADED) == 0) { 959 error = EIO; 960 goto bad2; 961 } 962 } else { 963 if ((wd->sc_flags & WDF_LOADED) == 0) { 964 wd->sc_flags |= WDF_LOADED; 965 966 /* Load the physical device parameters. */ 967 wd_get_params(wd, AT_WAIT, &wd->sc_params); 968 969 /* Load the partition info if not already loaded. */ 970 wdgetdisklabel(wd); 971 } 972 } 973 974 /* Check that the partition exists. */ 975 if (part != RAW_PART && 976 (part >= wd->sc_dk.dk_label->d_npartitions || 977 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 978 error = ENXIO; 979 goto bad2; 980 } 981 982 /* Insure only one open at a time. */ 983 switch (fmt) { 984 case S_IFCHR: 985 wd->sc_dk.dk_copenmask |= (1 << part); 986 break; 987 case S_IFBLK: 988 wd->sc_dk.dk_bopenmask |= (1 << part); 989 break; 990 } 991 wd->sc_dk.dk_openmask = 992 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 993 994 mutex_exit(&wd->sc_dk.dk_openlock); 995 return 0; 996 997 bad2: 998 if (wd->sc_dk.dk_openmask == 0) 999 wd->atabus->ata_delref(wd->drvp); 1000 bad1: 1001 mutex_exit(&wd->sc_dk.dk_openlock); 1002 return error; 1003 } 1004 1005 int 1006 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1007 { 1008 struct wd_softc *wd = device_lookup(&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 printf("%s: %s\n", wd->sc_dev.dv_xname, 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 = wd->sc_dev.dv_xname; 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 = device_lookup(&wd_cd, WDUNIT(dev)); 1180 int error = 0, s; 1181 #ifdef __HAVE_OLD_DISKLABEL 1182 struct disklabel *newlabel = NULL; 1183 #endif 1184 1185 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1186 1187 if ((wd->sc_flags & WDF_LOADED) == 0) 1188 return EIO; 1189 1190 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1191 if (error != EPASSTHROUGH) 1192 return (error); 1193 1194 switch (xfer) { 1195 #ifdef HAS_BAD144_HANDLING 1196 case DIOCSBAD: 1197 if ((flag & FWRITE) == 0) 1198 return EBADF; 1199 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1200 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1201 bad144intern(wd); 1202 return 0; 1203 #endif 1204 #ifdef WD_SOFTBADSECT 1205 case DIOCBSLIST : 1206 { 1207 u_int32_t count, missing, skip; 1208 struct disk_badsecinfo dbsi; 1209 struct disk_badsectors *dbs; 1210 size_t available; 1211 uint8_t *laddr; 1212 1213 dbsi = *(struct disk_badsecinfo *)addr; 1214 missing = wd->sc_bscount; 1215 count = 0; 1216 available = dbsi.dbsi_bufsize; 1217 skip = dbsi.dbsi_skip; 1218 laddr = (uint8_t *)dbsi.dbsi_buffer; 1219 1220 /* 1221 * We start this loop with the expectation that all of the 1222 * entries will be missed and decrement this counter each 1223 * time we either skip over one (already copied out) or 1224 * we actually copy it back to user space. The structs 1225 * holding the bad sector information are copied directly 1226 * back to user space whilst the summary is returned via 1227 * the struct passed in via the ioctl. 1228 */ 1229 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1230 if (skip > 0) { 1231 missing--; 1232 skip--; 1233 continue; 1234 } 1235 if (available < sizeof(*dbs)) 1236 break; 1237 available -= sizeof(*dbs); 1238 copyout(dbs, laddr, sizeof(*dbs)); 1239 laddr += sizeof(*dbs); 1240 missing--; 1241 count++; 1242 } 1243 dbsi.dbsi_left = missing; 1244 dbsi.dbsi_copied = count; 1245 *(struct disk_badsecinfo *)addr = dbsi; 1246 return 0; 1247 } 1248 1249 case DIOCBSFLUSH : 1250 /* Clean out the bad sector list */ 1251 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1252 void *head = SLIST_FIRST(&wd->sc_bslist); 1253 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1254 free(head, M_TEMP); 1255 } 1256 wd->sc_bscount = 0; 1257 return 0; 1258 #endif 1259 case DIOCGDINFO: 1260 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1261 return 0; 1262 #ifdef __HAVE_OLD_DISKLABEL 1263 case ODIOCGDINFO: 1264 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1265 if (newlabel == NULL) 1266 return EIO; 1267 *newlabel = *(wd->sc_dk.dk_label); 1268 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1269 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1270 else 1271 error = ENOTTY; 1272 free(newlabel, M_TEMP); 1273 return error; 1274 #endif 1275 1276 case DIOCGPART: 1277 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1278 ((struct partinfo *)addr)->part = 1279 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1280 return 0; 1281 1282 case DIOCWDINFO: 1283 case DIOCSDINFO: 1284 #ifdef __HAVE_OLD_DISKLABEL 1285 case ODIOCWDINFO: 1286 case ODIOCSDINFO: 1287 #endif 1288 { 1289 struct disklabel *lp; 1290 1291 if ((flag & FWRITE) == 0) 1292 return EBADF; 1293 1294 #ifdef __HAVE_OLD_DISKLABEL 1295 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1296 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1297 if (newlabel == NULL) 1298 return EIO; 1299 memset(newlabel, 0, sizeof newlabel); 1300 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1301 lp = newlabel; 1302 } else 1303 #endif 1304 lp = (struct disklabel *)addr; 1305 1306 mutex_enter(&wd->sc_dk.dk_openlock); 1307 wd->sc_flags |= WDF_LABELLING; 1308 1309 error = setdisklabel(wd->sc_dk.dk_label, 1310 lp, /*wd->sc_dk.dk_openmask : */0, 1311 wd->sc_dk.dk_cpulabel); 1312 if (error == 0) { 1313 if (wd->drvp->state > RESET) { 1314 s = splbio(); 1315 wd->drvp->drive_flags |= DRIVE_RESET; 1316 splx(s); 1317 } 1318 if (xfer == DIOCWDINFO 1319 #ifdef __HAVE_OLD_DISKLABEL 1320 || xfer == ODIOCWDINFO 1321 #endif 1322 ) 1323 error = writedisklabel(WDLABELDEV(dev), 1324 wdstrategy, wd->sc_dk.dk_label, 1325 wd->sc_dk.dk_cpulabel); 1326 } 1327 1328 wd->sc_flags &= ~WDF_LABELLING; 1329 mutex_exit(&wd->sc_dk.dk_openlock); 1330 #ifdef __HAVE_OLD_DISKLABEL 1331 if (newlabel != NULL) 1332 free(newlabel, M_TEMP); 1333 #endif 1334 return error; 1335 } 1336 1337 case DIOCKLABEL: 1338 if (*(int *)addr) 1339 wd->sc_flags |= WDF_KLABEL; 1340 else 1341 wd->sc_flags &= ~WDF_KLABEL; 1342 return 0; 1343 1344 case DIOCWLABEL: 1345 if ((flag & FWRITE) == 0) 1346 return EBADF; 1347 if (*(int *)addr) 1348 wd->sc_flags |= WDF_WLABEL; 1349 else 1350 wd->sc_flags &= ~WDF_WLABEL; 1351 return 0; 1352 1353 case DIOCGDEFLABEL: 1354 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1355 return 0; 1356 #ifdef __HAVE_OLD_DISKLABEL 1357 case ODIOCGDEFLABEL: 1358 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1359 if (newlabel == NULL) 1360 return EIO; 1361 wdgetdefaultlabel(wd, newlabel); 1362 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1363 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1364 else 1365 error = ENOTTY; 1366 free(newlabel, M_TEMP); 1367 return error; 1368 #endif 1369 1370 #ifdef notyet 1371 case DIOCWFORMAT: 1372 if ((flag & FWRITE) == 0) 1373 return EBADF; 1374 { 1375 register struct format_op *fop; 1376 struct iovec aiov; 1377 struct uio auio; 1378 1379 fop = (struct format_op *)addr; 1380 aiov.iov_base = fop->df_buf; 1381 aiov.iov_len = fop->df_count; 1382 auio.uio_iov = &aiov; 1383 auio.uio_iovcnt = 1; 1384 auio.uio_resid = fop->df_count; 1385 auio.uio_offset = 1386 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1387 auio.uio_vmspace = l->l_proc->p_vmspace; 1388 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1389 &auio); 1390 fop->df_count -= auio.uio_resid; 1391 fop->df_reg[0] = wdc->sc_status; 1392 fop->df_reg[1] = wdc->sc_error; 1393 return error; 1394 } 1395 #endif 1396 case DIOCGCACHE: 1397 return wd_getcache(wd, (int *)addr); 1398 1399 case DIOCSCACHE: 1400 return wd_setcache(wd, *(int *)addr); 1401 1402 case DIOCCACHESYNC: 1403 return wd_flushcache(wd, AT_WAIT); 1404 1405 case ATAIOCCOMMAND: 1406 /* 1407 * Make sure this command is (relatively) safe first 1408 */ 1409 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1410 (flag & FWRITE) == 0) 1411 return (EBADF); 1412 { 1413 struct wd_ioctl *wi; 1414 atareq_t *atareq = (atareq_t *) addr; 1415 int error1; 1416 1417 wi = wi_get(); 1418 wi->wi_softc = wd; 1419 wi->wi_atareq = *atareq; 1420 1421 if (atareq->datalen && atareq->flags & 1422 (ATACMD_READ | ATACMD_WRITE)) { 1423 void *tbuf; 1424 if (atareq->datalen < DEV_BSIZE 1425 && atareq->command == WDCC_IDENTIFY) { 1426 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1427 wi->wi_iov.iov_base = tbuf; 1428 wi->wi_iov.iov_len = DEV_BSIZE; 1429 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1430 } else { 1431 tbuf = NULL; 1432 wi->wi_iov.iov_base = atareq->databuf; 1433 wi->wi_iov.iov_len = atareq->datalen; 1434 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1435 } 1436 wi->wi_uio.uio_iov = &wi->wi_iov; 1437 wi->wi_uio.uio_iovcnt = 1; 1438 wi->wi_uio.uio_resid = atareq->datalen; 1439 wi->wi_uio.uio_offset = 0; 1440 wi->wi_uio.uio_rw = 1441 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1442 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1443 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1444 minphys, &wi->wi_uio); 1445 if (tbuf != NULL && error1 == 0) { 1446 error1 = copyout(tbuf, atareq->databuf, 1447 atareq->datalen); 1448 free(tbuf, M_TEMP); 1449 } 1450 } else { 1451 /* No need to call physio if we don't have any 1452 user data */ 1453 wi->wi_bp.b_flags = 0; 1454 wi->wi_bp.b_data = 0; 1455 wi->wi_bp.b_bcount = 0; 1456 wi->wi_bp.b_dev = 0; 1457 wi->wi_bp.b_proc = l->l_proc; 1458 wdioctlstrategy(&wi->wi_bp); 1459 error1 = wi->wi_bp.b_error; 1460 } 1461 *atareq = wi->wi_atareq; 1462 wi_free(wi); 1463 return(error1); 1464 } 1465 1466 case DIOCAWEDGE: 1467 { 1468 struct dkwedge_info *dkw = (void *) addr; 1469 1470 if ((flag & FWRITE) == 0) 1471 return (EBADF); 1472 1473 /* If the ioctl happens here, the parent is us. */ 1474 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1475 return (dkwedge_add(dkw)); 1476 } 1477 1478 case DIOCDWEDGE: 1479 { 1480 struct dkwedge_info *dkw = (void *) addr; 1481 1482 if ((flag & FWRITE) == 0) 1483 return (EBADF); 1484 1485 /* If the ioctl happens here, the parent is us. */ 1486 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1487 return (dkwedge_del(dkw)); 1488 } 1489 1490 case DIOCLWEDGES: 1491 { 1492 struct dkwedge_list *dkwl = (void *) addr; 1493 1494 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1495 } 1496 1497 case DIOCGSTRATEGY: 1498 { 1499 struct disk_strategy *dks = (void *)addr; 1500 1501 s = splbio(); 1502 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1503 sizeof(dks->dks_name)); 1504 splx(s); 1505 dks->dks_paramlen = 0; 1506 1507 return 0; 1508 } 1509 1510 case DIOCSSTRATEGY: 1511 { 1512 struct disk_strategy *dks = (void *)addr; 1513 struct bufq_state *new; 1514 struct bufq_state *old; 1515 1516 if ((flag & FWRITE) == 0) { 1517 return EBADF; 1518 } 1519 if (dks->dks_param != NULL) { 1520 return EINVAL; 1521 } 1522 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1523 error = bufq_alloc(&new, dks->dks_name, 1524 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1525 if (error) { 1526 return error; 1527 } 1528 s = splbio(); 1529 old = wd->sc_q; 1530 bufq_move(new, old); 1531 wd->sc_q = new; 1532 splx(s); 1533 bufq_free(old); 1534 1535 return 0; 1536 } 1537 1538 default: 1539 return ENOTTY; 1540 } 1541 1542 #ifdef DIAGNOSTIC 1543 panic("wdioctl: impossible"); 1544 #endif 1545 } 1546 1547 #ifdef B_FORMAT 1548 int 1549 wdformat(struct buf *bp) 1550 { 1551 1552 bp->b_flags |= B_FORMAT; 1553 return wdstrategy(bp); 1554 } 1555 #endif 1556 1557 int 1558 wdsize(dev_t dev) 1559 { 1560 struct wd_softc *wd; 1561 int part, omask; 1562 int size; 1563 1564 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1565 1566 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1567 if (wd == NULL) 1568 return (-1); 1569 1570 part = WDPART(dev); 1571 omask = wd->sc_dk.dk_openmask & (1 << part); 1572 1573 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1574 return (-1); 1575 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1576 size = -1; 1577 else 1578 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1579 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1580 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1581 return (-1); 1582 return (size); 1583 } 1584 1585 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1586 static int wddoingadump = 0; 1587 static int wddumprecalibrated = 0; 1588 1589 /* 1590 * Dump core after a system crash. 1591 */ 1592 int 1593 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1594 { 1595 struct wd_softc *wd; /* disk unit to do the I/O */ 1596 struct disklabel *lp; /* disk's disklabel */ 1597 int part, err; 1598 int nblks; /* total number of sectors left to write */ 1599 1600 /* Check if recursive dump; if so, punt. */ 1601 if (wddoingadump) 1602 return EFAULT; 1603 wddoingadump = 1; 1604 1605 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1606 if (wd == NULL) 1607 return (ENXIO); 1608 1609 part = WDPART(dev); 1610 1611 /* Convert to disk sectors. Request must be a multiple of size. */ 1612 lp = wd->sc_dk.dk_label; 1613 if ((size % lp->d_secsize) != 0) 1614 return EFAULT; 1615 nblks = size / lp->d_secsize; 1616 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1617 1618 /* Check transfer bounds against partition size. */ 1619 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1620 return EINVAL; 1621 1622 /* Offset block number to start of partition. */ 1623 blkno += lp->d_partitions[part].p_offset; 1624 1625 /* Recalibrate, if first dump transfer. */ 1626 if (wddumprecalibrated == 0) { 1627 wddumprecalibrated = 1; 1628 (*wd->atabus->ata_reset_drive)(wd->drvp, 1629 AT_POLL | AT_RST_EMERG); 1630 wd->drvp->state = RESET; 1631 } 1632 1633 wd->sc_bp = NULL; 1634 wd->sc_wdc_bio.blkno = blkno; 1635 wd->sc_wdc_bio.flags = ATA_POLL; 1636 if (wd->sc_flags & WDF_LBA48 && 1637 (blkno > LBA48_THRESHOLD || 1638 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1639 wd->sc_wdc_bio.flags |= ATA_LBA48; 1640 if (wd->sc_flags & WDF_LBA) 1641 wd->sc_wdc_bio.flags |= ATA_LBA; 1642 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1643 wd->sc_wdc_bio.databuf = va; 1644 #ifndef WD_DUMP_NOT_TRUSTED 1645 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1646 case ATACMD_TRY_AGAIN: 1647 panic("wddump: try again"); 1648 break; 1649 case ATACMD_QUEUED: 1650 panic("wddump: polled command has been queued"); 1651 break; 1652 case ATACMD_COMPLETE: 1653 break; 1654 } 1655 switch(wd->sc_wdc_bio.error) { 1656 case TIMEOUT: 1657 printf("wddump: device timed out"); 1658 err = EIO; 1659 break; 1660 case ERR_DF: 1661 printf("wddump: drive fault"); 1662 err = EIO; 1663 break; 1664 case ERR_DMA: 1665 printf("wddump: DMA error"); 1666 err = EIO; 1667 break; 1668 case ERROR: 1669 printf("wddump: "); 1670 wdperror(wd); 1671 err = EIO; 1672 break; 1673 case NOERROR: 1674 err = 0; 1675 break; 1676 default: 1677 panic("wddump: unknown error type"); 1678 } 1679 if (err != 0) { 1680 printf("\n"); 1681 return err; 1682 } 1683 #else /* WD_DUMP_NOT_TRUSTED */ 1684 /* Let's just talk about this first... */ 1685 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1686 unit, va, cylin, head, sector); 1687 delay(500 * 1000); /* half a second */ 1688 #endif 1689 1690 wddoingadump = 0; 1691 return 0; 1692 } 1693 1694 #ifdef HAS_BAD144_HANDLING 1695 /* 1696 * Internalize the bad sector table. 1697 */ 1698 void 1699 bad144intern(struct wd_softc *wd) 1700 { 1701 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1702 struct disklabel *lp = wd->sc_dk.dk_label; 1703 int i = 0; 1704 1705 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1706 1707 for (; i < NBT_BAD; i++) { 1708 if (bt->bt_bad[i].bt_cyl == 0xffff) 1709 break; 1710 wd->sc_badsect[i] = 1711 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1712 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1713 (bt->bt_bad[i].bt_trksec & 0xff); 1714 } 1715 for (; i < NBT_BAD+1; i++) 1716 wd->sc_badsect[i] = -1; 1717 } 1718 #endif 1719 1720 static void 1721 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1722 { 1723 prop_dictionary_t disk_info, odisk_info, geom; 1724 const char *cp; 1725 1726 disk_info = prop_dictionary_create(); 1727 1728 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1729 cp = "ST506"; 1730 else { 1731 /* XXX Should have a case for ATA here, too. */ 1732 cp = "ESDI"; 1733 } 1734 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1735 1736 geom = prop_dictionary_create(); 1737 1738 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1739 1740 prop_dictionary_set_uint32(geom, "sector-size", 1741 DEV_BSIZE /* XXX 512? */); 1742 1743 prop_dictionary_set_uint16(geom, "sectors-per-track", 1744 wd->sc_params.atap_sectors); 1745 1746 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1747 wd->sc_params.atap_heads); 1748 1749 if (wd->sc_flags & WDF_LBA) 1750 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1751 wd->sc_capacity / 1752 (wd->sc_params.atap_heads * 1753 wd->sc_params.atap_sectors)); 1754 else 1755 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1756 wd->sc_params.atap_cylinders); 1757 1758 prop_dictionary_set(disk_info, "geometry", geom); 1759 prop_object_release(geom); 1760 1761 prop_dictionary_set(device_properties(&wd->sc_dev), 1762 "disk-info", disk_info); 1763 1764 /* 1765 * Don't release disk_info here; we keep a reference to it. 1766 * disk_detach() will release it when we go away. 1767 */ 1768 1769 odisk_info = wd->sc_dk.dk_info; 1770 wd->sc_dk.dk_info = disk_info; 1771 if (odisk_info) 1772 prop_object_release(odisk_info); 1773 } 1774 1775 int 1776 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1777 { 1778 1779 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1780 case CMD_AGAIN: 1781 return 1; 1782 case CMD_ERR: 1783 /* 1784 * We `know' there's a drive here; just assume it's old. 1785 * This geometry is only used to read the MBR and print a 1786 * (false) attach message. 1787 */ 1788 strncpy(params->atap_model, "ST506", 1789 sizeof params->atap_model); 1790 params->atap_config = ATA_CFG_FIXED; 1791 params->atap_cylinders = 1024; 1792 params->atap_heads = 8; 1793 params->atap_sectors = 17; 1794 params->atap_multi = 1; 1795 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1796 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1797 /* FALLTHROUGH */ 1798 case CMD_OK: 1799 wd_params_to_properties(wd, params); 1800 return 0; 1801 default: 1802 panic("wd_get_params: bad return code from ata_get_params"); 1803 /* NOTREACHED */ 1804 } 1805 } 1806 1807 int 1808 wd_getcache(struct wd_softc *wd, int *bitsp) 1809 { 1810 struct ataparams params; 1811 1812 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1813 return EIO; 1814 if (params.atap_cmd_set1 == 0x0000 || 1815 params.atap_cmd_set1 == 0xffff || 1816 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1817 *bitsp = 0; 1818 return 0; 1819 } 1820 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1821 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1822 *bitsp |= DKCACHE_WRITE; 1823 1824 return 0; 1825 } 1826 1827 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1828 1829 int 1830 wd_setcache(struct wd_softc *wd, int bits) 1831 { 1832 struct ataparams params; 1833 struct ata_command ata_c; 1834 1835 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1836 return EIO; 1837 1838 if (params.atap_cmd_set1 == 0x0000 || 1839 params.atap_cmd_set1 == 0xffff || 1840 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1841 return EOPNOTSUPP; 1842 1843 if ((bits & DKCACHE_READ) == 0 || 1844 (bits & DKCACHE_SAVE) != 0) 1845 return EOPNOTSUPP; 1846 1847 memset(&ata_c, 0, sizeof(struct ata_command)); 1848 ata_c.r_command = SET_FEATURES; 1849 ata_c.r_st_bmask = 0; 1850 ata_c.r_st_pmask = 0; 1851 ata_c.timeout = 30000; /* 30s timeout */ 1852 ata_c.flags = AT_WAIT; 1853 if (bits & DKCACHE_WRITE) 1854 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1855 else 1856 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1857 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1858 printf("%s: wd_setcache command not complete\n", 1859 wd->sc_dev.dv_xname); 1860 return EIO; 1861 } 1862 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1863 char sbuf[sizeof(at_errbits) + 64]; 1864 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1865 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1866 sbuf); 1867 return EIO; 1868 } 1869 return 0; 1870 } 1871 1872 static int 1873 wd_standby(struct wd_softc *wd, int flags) 1874 { 1875 struct ata_command ata_c; 1876 1877 memset(&ata_c, 0, sizeof(struct ata_command)); 1878 ata_c.r_command = WDCC_STANDBY_IMMED; 1879 ata_c.r_st_bmask = WDCS_DRDY; 1880 ata_c.r_st_pmask = WDCS_DRDY; 1881 ata_c.flags = flags; 1882 ata_c.timeout = 30000; /* 30s timeout */ 1883 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1884 aprint_error_dev(&wd->sc_dev, 1885 "standby immediate command didn't complete\n"); 1886 return EIO; 1887 } 1888 if (ata_c.flags & AT_ERROR) { 1889 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1890 return ENODEV; 1891 } 1892 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1893 char sbuf[sizeof(at_errbits) + 64]; 1894 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1895 aprint_error_dev(&wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1896 return EIO; 1897 } 1898 return 0; 1899 } 1900 1901 int 1902 wd_flushcache(struct wd_softc *wd, int flags) 1903 { 1904 struct ata_command ata_c; 1905 1906 /* 1907 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1908 * only ATA-2 and still support it. 1909 */ 1910 if (wd->drvp->ata_vers < 4 && 1911 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1912 wd->sc_params.atap_cmd_set2 == 0xffff)) 1913 return ENODEV; 1914 memset(&ata_c, 0, sizeof(struct ata_command)); 1915 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1916 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1917 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1918 else 1919 ata_c.r_command = WDCC_FLUSHCACHE; 1920 ata_c.r_st_bmask = WDCS_DRDY; 1921 ata_c.r_st_pmask = WDCS_DRDY; 1922 ata_c.flags = flags; 1923 ata_c.timeout = 30000; /* 30s timeout */ 1924 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1925 printf("%s: flush cache command didn't complete\n", 1926 wd->sc_dev.dv_xname); 1927 return EIO; 1928 } 1929 if (ata_c.flags & AT_ERROR) { 1930 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1931 return ENODEV; 1932 } 1933 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1934 char sbuf[sizeof(at_errbits) + 64]; 1935 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1936 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1937 sbuf); 1938 return EIO; 1939 } 1940 return 0; 1941 } 1942 1943 bool 1944 wd_shutdown(device_t dev, int how) 1945 { 1946 1947 struct wd_softc *wd = device_private(dev); 1948 wd_flushcache(wd, AT_POLL); 1949 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1950 wd_standby(wd, AT_POLL); 1951 return true; 1952 } 1953 1954 /* 1955 * Allocate space for a ioctl queue structure. Mostly taken from 1956 * scsipi_ioctl.c 1957 */ 1958 struct wd_ioctl * 1959 wi_get(void) 1960 { 1961 struct wd_ioctl *wi; 1962 int s; 1963 1964 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1965 buf_init(&wi->wi_bp); 1966 s = splbio(); 1967 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1968 splx(s); 1969 return (wi); 1970 } 1971 1972 /* 1973 * Free an ioctl structure and remove it from our list 1974 */ 1975 1976 void 1977 wi_free(struct wd_ioctl *wi) 1978 { 1979 int s; 1980 1981 s = splbio(); 1982 LIST_REMOVE(wi, wi_list); 1983 splx(s); 1984 buf_destroy(&wi->wi_bp); 1985 free(wi, M_TEMP); 1986 } 1987 1988 /* 1989 * Find a wd_ioctl structure based on the struct buf. 1990 */ 1991 1992 struct wd_ioctl * 1993 wi_find(struct buf *bp) 1994 { 1995 struct wd_ioctl *wi; 1996 int s; 1997 1998 s = splbio(); 1999 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 2000 if (bp == &wi->wi_bp) 2001 break; 2002 splx(s); 2003 return (wi); 2004 } 2005 2006 /* 2007 * Ioctl pseudo strategy routine 2008 * 2009 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2010 * happens here is: 2011 * 2012 * - wdioctl() queues a wd_ioctl structure. 2013 * 2014 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2015 * user space I/O is required. If physio() is called, physio() eventually 2016 * calls wdioctlstrategy(). 2017 * 2018 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2019 * to perform the actual command 2020 * 2021 * The reason for the use of the pseudo strategy routine is because 2022 * when doing I/O to/from user space, physio _really_ wants to be in 2023 * the loop. We could put the entire buffer into the ioctl request 2024 * structure, but that won't scale if we want to do things like download 2025 * microcode. 2026 */ 2027 2028 void 2029 wdioctlstrategy(struct buf *bp) 2030 { 2031 struct wd_ioctl *wi; 2032 struct ata_command ata_c; 2033 int error = 0; 2034 2035 wi = wi_find(bp); 2036 if (wi == NULL) { 2037 printf("wdioctlstrategy: " 2038 "No matching ioctl request found in queue\n"); 2039 error = EINVAL; 2040 goto bad; 2041 } 2042 2043 memset(&ata_c, 0, sizeof(ata_c)); 2044 2045 /* 2046 * Abort if physio broke up the transfer 2047 */ 2048 2049 if (bp->b_bcount != wi->wi_atareq.datalen) { 2050 printf("physio split wd ioctl request... cannot proceed\n"); 2051 error = EIO; 2052 goto bad; 2053 } 2054 2055 /* 2056 * Abort if we didn't get a buffer size that was a multiple of 2057 * our sector size (or was larger than NBBY) 2058 */ 2059 2060 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2061 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2062 (1 << NBBY)) { 2063 error = EINVAL; 2064 goto bad; 2065 } 2066 2067 /* 2068 * Make sure a timeout was supplied in the ioctl request 2069 */ 2070 2071 if (wi->wi_atareq.timeout == 0) { 2072 error = EINVAL; 2073 goto bad; 2074 } 2075 2076 if (wi->wi_atareq.flags & ATACMD_READ) 2077 ata_c.flags |= AT_READ; 2078 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2079 ata_c.flags |= AT_WRITE; 2080 2081 if (wi->wi_atareq.flags & ATACMD_READREG) 2082 ata_c.flags |= AT_READREG; 2083 2084 ata_c.flags |= AT_WAIT; 2085 2086 ata_c.timeout = wi->wi_atareq.timeout; 2087 ata_c.r_command = wi->wi_atareq.command; 2088 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2089 ata_c.r_cyl = wi->wi_atareq.cylinder; 2090 ata_c.r_sector = wi->wi_atareq.sec_num; 2091 ata_c.r_count = wi->wi_atareq.sec_count; 2092 ata_c.r_features = wi->wi_atareq.features; 2093 ata_c.r_st_bmask = WDCS_DRDY; 2094 ata_c.r_st_pmask = WDCS_DRDY; 2095 ata_c.data = wi->wi_bp.b_data; 2096 ata_c.bcount = wi->wi_bp.b_bcount; 2097 2098 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2099 != ATACMD_COMPLETE) { 2100 wi->wi_atareq.retsts = ATACMD_ERROR; 2101 goto bad; 2102 } 2103 2104 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2105 if (ata_c.flags & AT_ERROR) { 2106 wi->wi_atareq.retsts = ATACMD_ERROR; 2107 wi->wi_atareq.error = ata_c.r_error; 2108 } else if (ata_c.flags & AT_DF) 2109 wi->wi_atareq.retsts = ATACMD_DF; 2110 else 2111 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2112 } else { 2113 wi->wi_atareq.retsts = ATACMD_OK; 2114 if (wi->wi_atareq.flags & ATACMD_READREG) { 2115 wi->wi_atareq.head = ata_c.r_head ; 2116 wi->wi_atareq.cylinder = ata_c.r_cyl; 2117 wi->wi_atareq.sec_num = ata_c.r_sector; 2118 wi->wi_atareq.sec_count = ata_c.r_count; 2119 wi->wi_atareq.features = ata_c.r_features; 2120 wi->wi_atareq.error = ata_c.r_error; 2121 } 2122 } 2123 2124 bp->b_error = 0; 2125 biodone(bp); 2126 return; 2127 bad: 2128 bp->b_error = error; 2129 biodone(bp); 2130 } 2131
Indexes created Sat Sep 27 22:09:54 GMT 2025