wd.c revision 1.337.2.3
1 /* $NetBSD: wd.c,v 1.337.2.3 2007/05/13 17:36:22 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.337.2.3 2007/05/13 17:36:22 ad Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/vnode.h> 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <machine/intr.h> 97 #include <machine/bus.h> 98 99 #include <dev/ata/atareg.h> 100 #include <dev/ata/atavar.h> 101 #include <dev/ata/wdvar.h> 102 #include <dev/ic/wdcreg.h> 103 #include <sys/ataio.h> 104 #include "locators.h" 105 106 #include <prop/proplib.h> 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 CFATTACH_DECL(wd, sizeof(struct wd_softc), 143 wdprobe, wdattach, wddetach, wdactivate); 144 145 extern struct cfdriver wd_cd; 146 147 dev_type_open(wdopen); 148 dev_type_close(wdclose); 149 dev_type_read(wdread); 150 dev_type_write(wdwrite); 151 dev_type_ioctl(wdioctl); 152 dev_type_strategy(wdstrategy); 153 dev_type_dump(wddump); 154 dev_type_size(wdsize); 155 156 const struct bdevsw wd_bdevsw = { 157 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 158 }; 159 160 const struct cdevsw wd_cdevsw = { 161 wdopen, wdclose, wdread, wdwrite, wdioctl, 162 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 163 }; 164 165 /* 166 * Glue necessary to hook WDCIOCCOMMAND into physio 167 */ 168 169 struct wd_ioctl { 170 LIST_ENTRY(wd_ioctl) wi_list; 171 struct buf wi_bp; 172 struct uio wi_uio; 173 struct iovec wi_iov; 174 atareq_t wi_atareq; 175 struct wd_softc *wi_softc; 176 }; 177 178 LIST_HEAD(, wd_ioctl) wi_head; 179 180 struct wd_ioctl *wi_find(struct buf *); 181 void wi_free(struct wd_ioctl *); 182 struct wd_ioctl *wi_get(void); 183 void wdioctlstrategy(struct buf *); 184 185 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 186 void wdgetdisklabel(struct wd_softc *); 187 void wdstart(void *); 188 void __wdstart(struct wd_softc*, struct buf *); 189 void wdrestart(void *); 190 void wddone(void *); 191 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 192 int wd_standby(struct wd_softc *, int); 193 int wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy, minphys }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 207 208 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 209 210 /* 211 * Quirk table for IDE drives. Put more-specific matches first, since 212 * a simple globbing routine is used for matching. 213 */ 214 static const struct wd_quirk { 215 const char *wdq_match; /* inquiry pattern to match */ 216 int wdq_quirks; /* drive quirks */ 217 } wd_quirk_table[] = { 218 /* 219 * Some Seagate S-ATA drives have a PHY which can get confused 220 * with the way data is packetized by some S-ATA controllers. 221 * 222 * The work-around is to split in two any write transfer whose 223 * sector count % 15 == 1 (assuming 512 byte sectors). 224 * 225 * XXX This is an incomplete list. There are at least a couple 226 * XXX more model numbers. If you have trouble with such transfers 227 * XXX (8K is the most common) on Seagate S-ATA drives, please 228 * XXX notify thorpej (at) NetBSD.org. 229 */ 230 { "ST3120023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 { "ST380023AS", 233 WD_QUIRK_SPLIT_MOD15_WRITE }, 234 235 /* 236 * These seagate drives seems to have issue addressing sector 0xfffffff 237 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 238 * LBA48 239 * Note that we can't just change the code to always use LBA48 for 240 * sector 0xfffffff, because this would break valid and working 241 * setups using LBA48 drives on non-LBA48-capable controllers 242 * (and it's hard to get a list of such controllers) 243 */ 244 { "ST3160021A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160811A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160812A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 { "ST3160023A*", 251 WD_QUIRK_FORCE_LBA48 }, 252 { "ST3160827A*", 253 WD_QUIRK_FORCE_LBA48 }, 254 /* Attempt to catch all seagate drives larger than 200GB */ 255 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 256 WD_QUIRK_FORCE_LBA48 }, 257 { NULL, 258 0 } 259 }; 260 261 static const struct wd_quirk * 262 wd_lookup_quirks(const char *name) 263 { 264 const struct wd_quirk *wdq; 265 const char *estr; 266 267 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 268 /* 269 * We only want exact matches (which include matches 270 * against globbing characters). 271 */ 272 if (pmatch(name, wdq->wdq_match, &estr) == 2) 273 return (wdq); 274 } 275 return (NULL); 276 } 277 278 int 279 wdprobe(struct device *parent, struct cfdata *match, void *aux) 280 { 281 struct ata_device *adev = aux; 282 283 if (adev == NULL) 284 return 0; 285 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 286 return 0; 287 288 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 289 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 290 return 0; 291 return 1; 292 } 293 294 void 295 wdattach(struct device *parent, struct device *self, void *aux) 296 { 297 struct wd_softc *wd = (void *)self; 298 struct ata_device *adev= aux; 299 int i, blank; 300 char tbuf[41], pbuf[9], c, *p, *q; 301 const struct wd_quirk *wdq; 302 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 303 304 callout_init(&wd->sc_restart_ch); 305 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 306 #ifdef WD_SOFTBADSECT 307 SLIST_INIT(&wd->sc_bslist); 308 #endif 309 wd->atabus = adev->adev_bustype; 310 wd->openings = adev->adev_openings; 311 wd->drvp = adev->adev_drv_data; 312 313 wd->drvp->drv_done = wddone; 314 wd->drvp->drv_softc = &wd->sc_dev; 315 316 aprint_naive("\n"); 317 318 /* read our drive info */ 319 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 320 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 321 return; 322 } 323 324 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 325 i < sizeof(wd->sc_params.atap_model); i++) { 326 c = *p++; 327 if (c == '\0') 328 break; 329 if (c != ' ') { 330 if (blank) { 331 *q++ = ' '; 332 blank = 0; 333 } 334 *q++ = c; 335 } else 336 blank = 1; 337 } 338 *q++ = '\0'; 339 340 aprint_normal(": <%s>\n", tbuf); 341 342 wdq = wd_lookup_quirks(tbuf); 343 if (wdq != NULL) 344 wd->sc_quirks = wdq->wdq_quirks; 345 346 if (wd->sc_quirks != 0) { 347 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 348 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 349 sbuf, sizeof(sbuf)); 350 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 351 } 352 353 if ((wd->sc_params.atap_multi & 0xff) > 1) { 354 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 355 } else { 356 wd->sc_multi = 1; 357 } 358 359 aprint_verbose("%s: drive supports %d-sector PIO transfers,", 360 wd->sc_dev.dv_xname, wd->sc_multi); 361 362 /* 48-bit LBA addressing */ 363 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 364 wd->sc_flags |= WDF_LBA48; 365 366 /* Prior to ATA-4, LBA was optional. */ 367 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 368 wd->sc_flags |= WDF_LBA; 369 #if 0 370 /* ATA-4 requires LBA. */ 371 if (wd->sc_params.atap_ataversion != 0xffff && 372 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 373 wd->sc_flags |= WDF_LBA; 374 #endif 375 376 if ((wd->sc_flags & WDF_LBA48) != 0) { 377 aprint_verbose(" LBA48 addressing\n"); 378 wd->sc_capacity = 379 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 380 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 381 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 382 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 383 } else if ((wd->sc_flags & WDF_LBA) != 0) { 384 aprint_verbose(" LBA addressing\n"); 385 wd->sc_capacity = 386 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 387 wd->sc_params.atap_capacity[0]; 388 } else { 389 aprint_verbose(" chs addressing\n"); 390 wd->sc_capacity = 391 wd->sc_params.atap_cylinders * 392 wd->sc_params.atap_heads * 393 wd->sc_params.atap_sectors; 394 } 395 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 396 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 397 "%d bytes/sect x %llu sectors\n", 398 self->dv_xname, pbuf, 399 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 400 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 401 wd->sc_params.atap_cylinders, 402 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 403 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 404 405 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 406 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 407 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 408 /* 409 * Initialize and attach the disk structure. 410 */ 411 wd->sc_dk.dk_driver = &wddkdriver; 412 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 413 /* we fill in dk_info later */ 414 disk_attach(&wd->sc_dk); 415 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 416 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 417 if (wd->sc_sdhook == NULL) 418 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 419 wd->sc_dev.dv_xname); 420 #if NRND > 0 421 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 422 RND_TYPE_DISK, 0); 423 #endif 424 425 /* Discover wedges on this disk. */ 426 dkwedge_discover(&wd->sc_dk); 427 } 428 429 int 430 wdactivate(struct device *self, enum devact act) 431 { 432 int rv = 0; 433 434 switch (act) { 435 case DVACT_ACTIVATE: 436 rv = EOPNOTSUPP; 437 break; 438 439 case DVACT_DEACTIVATE: 440 /* 441 * Nothing to do; we key off the device's DVF_ACTIVATE. 442 */ 443 break; 444 } 445 return (rv); 446 } 447 448 int 449 wddetach(struct device *self, int flags) 450 { 451 struct wd_softc *sc = (struct wd_softc *)self; 452 int s, bmaj, cmaj, i, mn; 453 454 /* locate the major number */ 455 bmaj = bdevsw_lookup_major(&wd_bdevsw); 456 cmaj = cdevsw_lookup_major(&wd_cdevsw); 457 458 /* Nuke the vnodes for any open instances. */ 459 for (i = 0; i < MAXPARTITIONS; i++) { 460 mn = WDMINOR(device_unit(self), i); 461 vdevgone(bmaj, mn, mn, VBLK); 462 vdevgone(cmaj, mn, mn, VCHR); 463 } 464 465 /* Delete all of our wedges. */ 466 dkwedge_delall(&sc->sc_dk); 467 468 s = splbio(); 469 470 /* Kill off any queued buffers. */ 471 bufq_drain(sc->sc_q); 472 473 bufq_free(sc->sc_q); 474 sc->atabus->ata_killpending(sc->drvp); 475 476 splx(s); 477 478 /* Detach disk. */ 479 disk_detach(&sc->sc_dk); 480 481 #ifdef WD_SOFTBADSECT 482 /* Clean out the bad sector list */ 483 while (!SLIST_EMPTY(&sc->sc_bslist)) { 484 void *head = SLIST_FIRST(&sc->sc_bslist); 485 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 486 free(head, M_TEMP); 487 } 488 sc->sc_bscount = 0; 489 #endif 490 491 /* Get rid of the shutdown hook. */ 492 if (sc->sc_sdhook != NULL) 493 shutdownhook_disestablish(sc->sc_sdhook); 494 495 #if NRND > 0 496 /* Unhook the entropy source. */ 497 rnd_detach_source(&sc->rnd_source); 498 #endif 499 500 sc->drvp->drive_flags = 0; /* no drive any more here */ 501 502 return (0); 503 } 504 505 /* 506 * Read/write routine for a buffer. Validates the arguments and schedules the 507 * transfer. Does not wait for the transfer to complete. 508 */ 509 void 510 wdstrategy(struct buf *bp) 511 { 512 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 513 struct disklabel *lp = wd->sc_dk.dk_label; 514 daddr_t blkno; 515 int s, error; 516 517 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 518 DEBUG_XFERS); 519 520 error = 0; 521 522 /* Valid request? */ 523 if (bp->b_blkno < 0 || 524 (bp->b_bcount % lp->d_secsize) != 0 || 525 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 526 error = EINVAL; 527 goto done; 528 } 529 530 /* If device invalidated (e.g. media change, door open), error. */ 531 if ((wd->sc_flags & WDF_LOADED) == 0) { 532 error = EIO; 533 goto done; 534 } 535 536 /* If it's a null transfer, return immediately. */ 537 if (bp->b_bcount == 0) 538 goto done; 539 540 /* 541 * Do bounds checking, adjust transfer. if error, process. 542 * If end of partition, just return. 543 */ 544 if (WDPART(bp->b_dev) == RAW_PART) { 545 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 546 wd->sc_capacity) <= 0) 547 goto done; 548 } else { 549 if (bounds_check_with_label(&wd->sc_dk, bp, 550 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 551 goto done; 552 } 553 554 /* 555 * Now convert the block number to absolute and put it in 556 * terms of the device's logical block size. 557 */ 558 if (lp->d_secsize >= DEV_BSIZE) 559 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 560 else 561 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 562 563 if (WDPART(bp->b_dev) != RAW_PART) 564 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 565 566 bp->b_rawblkno = blkno; 567 568 #ifdef WD_SOFTBADSECT 569 /* 570 * If the transfer about to be attempted contains only a block that 571 * is known to be bad then return an error for the transfer without 572 * even attempting to start a transfer up under the premis that we 573 * will just end up doing more retries for a transfer that will end 574 * up failing again. 575 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 576 */ 577 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 578 struct disk_badsectors *dbs; 579 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 580 581 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 582 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 583 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 584 bp->b_error = EIO; 585 goto bad; 586 } 587 } 588 #endif 589 590 /* Queue transfer on drive, activate drive and controller if idle. */ 591 s = splbio(); 592 BUFQ_PUT(wd->sc_q, bp); 593 wdstart(wd); 594 splx(s); 595 return; 596 done: 597 /* Toss transfer; we're done early. */ 598 biodone(bp, error, 0); 599 } 600 601 /* 602 * Queue a drive for I/O. 603 */ 604 void 605 wdstart(void *arg) 606 { 607 struct wd_softc *wd = arg; 608 struct buf *bp = NULL; 609 610 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 611 DEBUG_XFERS); 612 while (wd->openings > 0) { 613 614 /* Is there a buf for us ? */ 615 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 616 return; 617 618 /* 619 * Make the command. First lock the device 620 */ 621 wd->openings--; 622 623 wd->retries = 0; 624 __wdstart(wd, bp); 625 } 626 } 627 628 static void 629 wd_split_mod15_write(struct buf *bp) 630 { 631 struct buf *obp = bp->b_private; 632 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 633 634 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 635 /* 636 * Propagate the error. If this was the first half of 637 * the original transfer, make sure to account for that 638 * in the residual. 639 */ 640 if (bp->b_data == obp->b_data) 641 bp->b_resid += bp->b_bcount; 642 goto done; 643 } 644 645 /* 646 * If this was the second half of the transfer, we're all done! 647 */ 648 if (bp->b_data != obp->b_data) 649 goto done; 650 651 /* 652 * Advance the pointer to the second half and issue that command 653 * using the same opening. 654 */ 655 bp->b_flags = obp->b_flags | B_CALL; 656 bp->b_data = (char *)bp->b_data + bp->b_bcount; 657 bp->b_blkno += (bp->b_bcount / 512); 658 bp->b_rawblkno += (bp->b_bcount / 512); 659 __wdstart(sc, bp); 660 return; 661 662 done: 663 putiobuf(bp); 664 biodone(obp, bp->b_error, bp->b_resid); 665 sc->openings++; 666 /* wddone() will call wdstart() */ 667 } 668 669 void 670 __wdstart(struct wd_softc *wd, struct buf *bp) 671 { 672 673 /* 674 * Deal with the "split mod15 write" quirk. We just divide the 675 * transfer in two, doing the first half and then then second half 676 * with the same command opening. 677 * 678 * Note we MUST do this here, because we can't let insertion 679 * into the bufq cause the transfers to be re-merged. 680 */ 681 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 682 (bp->b_flags & B_READ) == 0 && 683 bp->b_bcount > 512 && 684 ((bp->b_bcount / 512) % 15) == 1)) { 685 struct buf *nbp; 686 687 /* already at splbio */ 688 nbp = getiobuf_nowait(); 689 if (__predict_false(nbp == NULL)) { 690 /* No memory -- fail the iop. */ 691 biodone(bp, ENOMEM, 0); 692 wd->openings++; 693 return; 694 } 695 696 nbp->b_error = 0; 697 nbp->b_proc = bp->b_proc; 698 nbp->b_vp = NULLVP; 699 nbp->b_dev = bp->b_dev; 700 701 nbp->b_bcount = bp->b_bcount / 2; 702 nbp->b_bufsize = bp->b_bcount / 2; 703 nbp->b_data = bp->b_data; 704 705 nbp->b_blkno = bp->b_blkno; 706 nbp->b_rawblkno = bp->b_rawblkno; 707 708 nbp->b_flags = bp->b_flags | B_CALL; 709 nbp->b_iodone = wd_split_mod15_write; 710 711 /* Put ptr to orig buf in b_private and use new buf */ 712 nbp->b_private = bp; 713 714 BIO_COPYPRIO(nbp, bp); 715 716 bp = nbp; 717 } 718 719 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 720 wd->sc_wdc_bio.blkdone =0; 721 wd->sc_bp = bp; 722 /* 723 * If we're retrying, retry in single-sector mode. This will give us 724 * the sector number of the problem, and will eventually allow the 725 * transfer to succeed. 726 */ 727 if (wd->retries >= WDIORETRIES_SINGLE) 728 wd->sc_wdc_bio.flags = ATA_SINGLE; 729 else 730 wd->sc_wdc_bio.flags = 0; 731 if (wd->sc_flags & WDF_LBA48 && 732 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 733 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 734 wd->sc_wdc_bio.flags |= ATA_LBA48; 735 if (wd->sc_flags & WDF_LBA) 736 wd->sc_wdc_bio.flags |= ATA_LBA; 737 if (bp->b_flags & B_READ) 738 wd->sc_wdc_bio.flags |= ATA_READ; 739 wd->sc_wdc_bio.bcount = bp->b_bcount; 740 wd->sc_wdc_bio.databuf = bp->b_data; 741 /* Instrumentation. */ 742 disk_busy(&wd->sc_dk); 743 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 744 case ATACMD_TRY_AGAIN: 745 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 746 break; 747 case ATACMD_QUEUED: 748 case ATACMD_COMPLETE: 749 break; 750 default: 751 panic("__wdstart: bad return code from ata_bio()"); 752 } 753 } 754 755 void 756 wddone(void *v) 757 { 758 struct wd_softc *wd = v; 759 struct buf *bp = wd->sc_bp; 760 const char *errmsg; 761 int do_perror = 0, error = 0; 762 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 763 DEBUG_XFERS); 764 765 if (bp == NULL) 766 return; 767 bp->b_resid = wd->sc_wdc_bio.bcount; 768 switch (wd->sc_wdc_bio.error) { 769 case ERR_DMA: 770 errmsg = "DMA error"; 771 goto retry; 772 case ERR_DF: 773 errmsg = "device fault"; 774 goto retry; 775 case TIMEOUT: 776 errmsg = "device timeout"; 777 goto retry; 778 case ERR_RESET: 779 errmsg = "channel reset"; 780 goto retry2; 781 case ERROR: 782 /* Don't care about media change bits */ 783 if (wd->sc_wdc_bio.r_error != 0 && 784 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 785 goto noerror; 786 errmsg = "error"; 787 do_perror = 1; 788 retry: /* Just reset and retry. Can we do more ? */ 789 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 790 retry2: 791 diskerr(bp, "wd", errmsg, LOG_PRINTF, 792 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 793 if (wd->retries < WDIORETRIES) 794 printf(", retrying\n"); 795 if (do_perror) 796 wdperror(wd); 797 if (wd->retries < WDIORETRIES) { 798 wd->retries++; 799 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 800 wdrestart, wd); 801 return; 802 } 803 printf("\n"); 804 805 #ifdef WD_SOFTBADSECT 806 /* 807 * Not all errors indicate a failed block but those that do, 808 * put the block on the bad-block list for the device. Only 809 * do this for reads because the drive should do it for writes, 810 * itself, according to Manuel. 811 */ 812 if ((bp->b_flags & B_READ) && 813 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 814 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 815 struct disk_badsectors *dbs; 816 817 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 818 dbs->dbs_min = bp->b_rawblkno; 819 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 820 microtime(&dbs->dbs_failedat); 821 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 822 wd->sc_bscount++; 823 } 824 #endif 825 error = EIO; 826 break; 827 case NOERROR: 828 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 829 printf("%s: soft error (corrected)\n", 830 wd->sc_dev.dv_xname); 831 break; 832 case ERR_NODEV: 833 error = EIO; 834 break; 835 } 836 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 837 (bp->b_flags & B_READ)); 838 #if NRND > 0 839 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 840 #endif 841 /* XXX Yuck, but we don't want to increment openings in this case */ 842 if (__predict_false((bp->b_flags & B_CALL) != 0 && 843 bp->b_iodone == wd_split_mod15_write)) 844 biodone(bp, error, bp->b_resid); 845 else { 846 biodone(bp, error, bp->b_resid); 847 wd->openings++; 848 } 849 wdstart(wd); 850 } 851 852 void 853 wdrestart(void *v) 854 { 855 struct wd_softc *wd = v; 856 struct buf *bp = wd->sc_bp; 857 int s; 858 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 859 DEBUG_XFERS); 860 861 s = splbio(); 862 __wdstart(v, bp); 863 splx(s); 864 } 865 866 int 867 wdread(dev_t dev, struct uio *uio, int flags) 868 { 869 870 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 871 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 872 } 873 874 int 875 wdwrite(dev_t dev, struct uio *uio, int flags) 876 { 877 878 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 879 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 880 } 881 882 int 883 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 884 { 885 struct wd_softc *wd; 886 int part, error; 887 888 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 889 wd = device_lookup(&wd_cd, WDUNIT(dev)); 890 if (wd == NULL) 891 return (ENXIO); 892 893 if (! device_is_active(&wd->sc_dev)) 894 return (ENODEV); 895 896 part = WDPART(dev); 897 898 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 899 return (error); 900 901 /* 902 * If there are wedges, and this is not RAW_PART, then we 903 * need to fail. 904 */ 905 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 906 error = EBUSY; 907 goto bad1; 908 } 909 910 /* 911 * If this is the first open of this device, add a reference 912 * to the adapter. 913 */ 914 if (wd->sc_dk.dk_openmask == 0 && 915 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 916 goto bad1; 917 918 if (wd->sc_dk.dk_openmask != 0) { 919 /* 920 * If any partition is open, but the disk has been invalidated, 921 * disallow further opens. 922 */ 923 if ((wd->sc_flags & WDF_LOADED) == 0) { 924 error = EIO; 925 goto bad2; 926 } 927 } else { 928 if ((wd->sc_flags & WDF_LOADED) == 0) { 929 wd->sc_flags |= WDF_LOADED; 930 931 /* Load the physical device parameters. */ 932 wd_get_params(wd, AT_WAIT, &wd->sc_params); 933 934 /* Load the partition info if not already loaded. */ 935 wdgetdisklabel(wd); 936 } 937 } 938 939 /* Check that the partition exists. */ 940 if (part != RAW_PART && 941 (part >= wd->sc_dk.dk_label->d_npartitions || 942 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 943 error = ENXIO; 944 goto bad2; 945 } 946 947 /* Insure only one open at a time. */ 948 switch (fmt) { 949 case S_IFCHR: 950 wd->sc_dk.dk_copenmask |= (1 << part); 951 break; 952 case S_IFBLK: 953 wd->sc_dk.dk_bopenmask |= (1 << part); 954 break; 955 } 956 wd->sc_dk.dk_openmask = 957 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 958 959 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 960 return 0; 961 962 bad2: 963 if (wd->sc_dk.dk_openmask == 0) 964 wd->atabus->ata_delref(wd->drvp); 965 bad1: 966 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 967 return error; 968 } 969 970 int 971 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 972 { 973 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 974 int part = WDPART(dev); 975 int error; 976 977 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 978 979 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 980 return error; 981 982 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 if (wd->sc_dk.dk_openmask == 0) { 994 wd_flushcache(wd, AT_WAIT); 995 996 if (! (wd->sc_flags & WDF_KLABEL)) 997 wd->sc_flags &= ~WDF_LOADED; 998 999 wd->atabus->ata_delref(wd->drvp); 1000 } 1001 1002 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1003 return 0; 1004 } 1005 1006 void 1007 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1008 { 1009 1010 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1011 memset(lp, 0, sizeof(struct disklabel)); 1012 1013 lp->d_secsize = DEV_BSIZE; 1014 lp->d_ntracks = wd->sc_params.atap_heads; 1015 lp->d_nsectors = wd->sc_params.atap_sectors; 1016 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1017 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1018 wd->sc_params.atap_cylinders; 1019 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1020 1021 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1022 lp->d_type = DTYPE_ST506; 1023 else 1024 lp->d_type = DTYPE_ESDI; 1025 1026 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1027 strncpy(lp->d_packname, "fictitious", 16); 1028 if (wd->sc_capacity > UINT32_MAX) 1029 lp->d_secperunit = UINT32_MAX; 1030 else 1031 lp->d_secperunit = wd->sc_capacity; 1032 lp->d_rpm = 3600; 1033 lp->d_interleave = 1; 1034 lp->d_flags = 0; 1035 1036 lp->d_partitions[RAW_PART].p_offset = 0; 1037 lp->d_partitions[RAW_PART].p_size = 1038 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1039 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1040 lp->d_npartitions = RAW_PART + 1; 1041 1042 lp->d_magic = DISKMAGIC; 1043 lp->d_magic2 = DISKMAGIC; 1044 lp->d_checksum = dkcksum(lp); 1045 } 1046 1047 /* 1048 * Fabricate a default disk label, and try to read the correct one. 1049 */ 1050 void 1051 wdgetdisklabel(struct wd_softc *wd) 1052 { 1053 struct disklabel *lp = wd->sc_dk.dk_label; 1054 const char *errstring; 1055 int s; 1056 1057 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1058 1059 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1060 1061 wdgetdefaultlabel(wd, lp); 1062 1063 wd->sc_badsect[0] = -1; 1064 1065 if (wd->drvp->state > RESET) { 1066 s = splbio(); 1067 wd->drvp->drive_flags |= DRIVE_RESET; 1068 splx(s); 1069 } 1070 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1071 RAW_PART), wdstrategy, lp, 1072 wd->sc_dk.dk_cpulabel); 1073 if (errstring) { 1074 /* 1075 * This probably happened because the drive's default 1076 * geometry doesn't match the DOS geometry. We 1077 * assume the DOS geometry is now in the label and try 1078 * again. XXX This is a kluge. 1079 */ 1080 if (wd->drvp->state > RESET) { 1081 s = splbio(); 1082 wd->drvp->drive_flags |= DRIVE_RESET; 1083 splx(s); 1084 } 1085 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1086 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1087 } 1088 if (errstring) { 1089 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1090 return; 1091 } 1092 1093 if (wd->drvp->state > RESET) { 1094 s = splbio(); 1095 wd->drvp->drive_flags |= DRIVE_RESET; 1096 splx(s); 1097 } 1098 #ifdef HAS_BAD144_HANDLING 1099 if ((lp->d_flags & D_BADSECT) != 0) 1100 bad144intern(wd); 1101 #endif 1102 } 1103 1104 void 1105 wdperror(const struct wd_softc *wd) 1106 { 1107 static const char *const errstr0_3[] = {"address mark not found", 1108 "track 0 not found", "aborted command", "media change requested", 1109 "id not found", "media changed", "uncorrectable data error", 1110 "bad block detected"}; 1111 static const char *const errstr4_5[] = { 1112 "obsolete (address mark not found)", 1113 "no media/write protected", "aborted command", 1114 "media change requested", "id not found", "media changed", 1115 "uncorrectable data error", "interface CRC error"}; 1116 const char *const *errstr; 1117 int i; 1118 const char *sep = ""; 1119 1120 const char *devname = wd->sc_dev.dv_xname; 1121 struct ata_drive_datas *drvp = wd->drvp; 1122 int errno = wd->sc_wdc_bio.r_error; 1123 1124 if (drvp->ata_vers >= 4) 1125 errstr = errstr4_5; 1126 else 1127 errstr = errstr0_3; 1128 1129 printf("%s: (", devname); 1130 1131 if (errno == 0) 1132 printf("error not notified"); 1133 1134 for (i = 0; i < 8; i++) { 1135 if (errno & (1 << i)) { 1136 printf("%s%s", sep, errstr[i]); 1137 sep = ", "; 1138 } 1139 } 1140 printf(")\n"); 1141 } 1142 1143 int 1144 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1145 { 1146 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1147 int error = 0, s; 1148 #ifdef __HAVE_OLD_DISKLABEL 1149 struct disklabel *newlabel = NULL; 1150 #endif 1151 1152 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1153 1154 if ((wd->sc_flags & WDF_LOADED) == 0) 1155 return EIO; 1156 1157 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1158 if (error != EPASSTHROUGH) 1159 return (error); 1160 1161 switch (xfer) { 1162 #ifdef HAS_BAD144_HANDLING 1163 case DIOCSBAD: 1164 if ((flag & FWRITE) == 0) 1165 return EBADF; 1166 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1167 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1168 bad144intern(wd); 1169 return 0; 1170 #endif 1171 #ifdef WD_SOFTBADSECT 1172 case DIOCBSLIST : 1173 { 1174 u_int32_t count, missing, skip; 1175 struct disk_badsecinfo dbsi; 1176 struct disk_badsectors *dbs; 1177 size_t available; 1178 void *laddr; 1179 1180 dbsi = *(struct disk_badsecinfo *)addr; 1181 missing = wd->sc_bscount; 1182 count = 0; 1183 available = dbsi.dbsi_bufsize; 1184 skip = dbsi.dbsi_skip; 1185 laddr = dbsi.dbsi_buffer; 1186 1187 /* 1188 * We start this loop with the expectation that all of the 1189 * entries will be missed and decrement this counter each 1190 * time we either skip over one (already copied out) or 1191 * we actually copy it back to user space. The structs 1192 * holding the bad sector information are copied directly 1193 * back to user space whilst the summary is returned via 1194 * the struct passed in via the ioctl. 1195 */ 1196 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1197 if (skip > 0) { 1198 missing--; 1199 skip--; 1200 continue; 1201 } 1202 if (available < sizeof(*dbs)) 1203 break; 1204 available -= sizeof(*dbs); 1205 copyout(dbs, laddr, sizeof(*dbs)); 1206 laddr += sizeof(*dbs); 1207 missing--; 1208 count++; 1209 } 1210 dbsi.dbsi_left = missing; 1211 dbsi.dbsi_copied = count; 1212 *(struct disk_badsecinfo *)addr = dbsi; 1213 return 0; 1214 } 1215 1216 case DIOCBSFLUSH : 1217 /* Clean out the bad sector list */ 1218 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1219 void *head = SLIST_FIRST(&wd->sc_bslist); 1220 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1221 free(head, M_TEMP); 1222 } 1223 wd->sc_bscount = 0; 1224 return 0; 1225 #endif 1226 case DIOCGDINFO: 1227 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1228 return 0; 1229 #ifdef __HAVE_OLD_DISKLABEL 1230 case ODIOCGDINFO: 1231 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1232 if (newlabel == NULL) 1233 return EIO; 1234 *newlabel = *(wd->sc_dk.dk_label); 1235 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1236 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1237 else 1238 error = ENOTTY; 1239 free(newlabel, M_TEMP); 1240 return error; 1241 #endif 1242 1243 case DIOCGPART: 1244 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1245 ((struct partinfo *)addr)->part = 1246 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1247 return 0; 1248 1249 case DIOCWDINFO: 1250 case DIOCSDINFO: 1251 #ifdef __HAVE_OLD_DISKLABEL 1252 case ODIOCWDINFO: 1253 case ODIOCSDINFO: 1254 #endif 1255 { 1256 struct disklabel *lp; 1257 1258 if ((flag & FWRITE) == 0) 1259 return EBADF; 1260 1261 #ifdef __HAVE_OLD_DISKLABEL 1262 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1263 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1264 if (newlabel == NULL) 1265 return EIO; 1266 memset(newlabel, 0, sizeof newlabel); 1267 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1268 lp = newlabel; 1269 } else 1270 #endif 1271 lp = (struct disklabel *)addr; 1272 1273 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1274 NULL)) != 0) 1275 goto bad; 1276 wd->sc_flags |= WDF_LABELLING; 1277 1278 error = setdisklabel(wd->sc_dk.dk_label, 1279 lp, /*wd->sc_dk.dk_openmask : */0, 1280 wd->sc_dk.dk_cpulabel); 1281 if (error == 0) { 1282 if (wd->drvp->state > RESET) { 1283 s = splbio(); 1284 wd->drvp->drive_flags |= DRIVE_RESET; 1285 splx(s); 1286 } 1287 if (xfer == DIOCWDINFO 1288 #ifdef __HAVE_OLD_DISKLABEL 1289 || xfer == ODIOCWDINFO 1290 #endif 1291 ) 1292 error = writedisklabel(WDLABELDEV(dev), 1293 wdstrategy, wd->sc_dk.dk_label, 1294 wd->sc_dk.dk_cpulabel); 1295 } 1296 1297 wd->sc_flags &= ~WDF_LABELLING; 1298 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1299 bad: 1300 #ifdef __HAVE_OLD_DISKLABEL 1301 if (newlabel != NULL) 1302 free(newlabel, M_TEMP); 1303 #endif 1304 return error; 1305 } 1306 1307 case DIOCKLABEL: 1308 if (*(int *)addr) 1309 wd->sc_flags |= WDF_KLABEL; 1310 else 1311 wd->sc_flags &= ~WDF_KLABEL; 1312 return 0; 1313 1314 case DIOCWLABEL: 1315 if ((flag & FWRITE) == 0) 1316 return EBADF; 1317 if (*(int *)addr) 1318 wd->sc_flags |= WDF_WLABEL; 1319 else 1320 wd->sc_flags &= ~WDF_WLABEL; 1321 return 0; 1322 1323 case DIOCGDEFLABEL: 1324 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1325 return 0; 1326 #ifdef __HAVE_OLD_DISKLABEL 1327 case ODIOCGDEFLABEL: 1328 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1329 if (newlabel == NULL) 1330 return EIO; 1331 wdgetdefaultlabel(wd, newlabel); 1332 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1333 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1334 else 1335 error = ENOTTY; 1336 free(newlabel, M_TEMP); 1337 return error; 1338 #endif 1339 1340 #ifdef notyet 1341 case DIOCWFORMAT: 1342 if ((flag & FWRITE) == 0) 1343 return EBADF; 1344 { 1345 register struct format_op *fop; 1346 struct iovec aiov; 1347 struct uio auio; 1348 1349 fop = (struct format_op *)addr; 1350 aiov.iov_base = fop->df_buf; 1351 aiov.iov_len = fop->df_count; 1352 auio.uio_iov = &aiov; 1353 auio.uio_iovcnt = 1; 1354 auio.uio_resid = fop->df_count; 1355 auio.uio_offset = 1356 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1357 auio.uio_vmspace = l->l_proc->p_vmspace; 1358 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1359 &auio); 1360 fop->df_count -= auio.uio_resid; 1361 fop->df_reg[0] = wdc->sc_status; 1362 fop->df_reg[1] = wdc->sc_error; 1363 return error; 1364 } 1365 #endif 1366 case DIOCGCACHE: 1367 return wd_getcache(wd, (int *)addr); 1368 1369 case DIOCSCACHE: 1370 return wd_setcache(wd, *(int *)addr); 1371 1372 case DIOCCACHESYNC: 1373 return wd_flushcache(wd, AT_WAIT); 1374 1375 case ATAIOCCOMMAND: 1376 /* 1377 * Make sure this command is (relatively) safe first 1378 */ 1379 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1380 (flag & FWRITE) == 0) 1381 return (EBADF); 1382 { 1383 struct wd_ioctl *wi; 1384 atareq_t *atareq = (atareq_t *) addr; 1385 int error1; 1386 1387 wi = wi_get(); 1388 wi->wi_softc = wd; 1389 wi->wi_atareq = *atareq; 1390 1391 if (atareq->datalen && atareq->flags & 1392 (ATACMD_READ | ATACMD_WRITE)) { 1393 wi->wi_iov.iov_base = atareq->databuf; 1394 wi->wi_iov.iov_len = atareq->datalen; 1395 wi->wi_uio.uio_iov = &wi->wi_iov; 1396 wi->wi_uio.uio_iovcnt = 1; 1397 wi->wi_uio.uio_resid = atareq->datalen; 1398 wi->wi_uio.uio_offset = 0; 1399 wi->wi_uio.uio_rw = 1400 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1401 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1402 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1403 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1404 minphys, &wi->wi_uio); 1405 } else { 1406 /* No need to call physio if we don't have any 1407 user data */ 1408 wi->wi_bp.b_flags = 0; 1409 wi->wi_bp.b_data = 0; 1410 wi->wi_bp.b_bcount = 0; 1411 wi->wi_bp.b_dev = 0; 1412 wi->wi_bp.b_proc = l->l_proc; 1413 wdioctlstrategy(&wi->wi_bp); 1414 error1 = wi->wi_bp.b_error; 1415 } 1416 *atareq = wi->wi_atareq; 1417 wi_free(wi); 1418 return(error1); 1419 } 1420 1421 case DIOCAWEDGE: 1422 { 1423 struct dkwedge_info *dkw = (void *) addr; 1424 1425 if ((flag & FWRITE) == 0) 1426 return (EBADF); 1427 1428 /* If the ioctl happens here, the parent is us. */ 1429 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1430 return (dkwedge_add(dkw)); 1431 } 1432 1433 case DIOCDWEDGE: 1434 { 1435 struct dkwedge_info *dkw = (void *) addr; 1436 1437 if ((flag & FWRITE) == 0) 1438 return (EBADF); 1439 1440 /* If the ioctl happens here, the parent is us. */ 1441 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1442 return (dkwedge_del(dkw)); 1443 } 1444 1445 case DIOCLWEDGES: 1446 { 1447 struct dkwedge_list *dkwl = (void *) addr; 1448 1449 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1450 } 1451 1452 case DIOCGSTRATEGY: 1453 { 1454 struct disk_strategy *dks = (void *)addr; 1455 1456 s = splbio(); 1457 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1458 sizeof(dks->dks_name)); 1459 splx(s); 1460 dks->dks_paramlen = 0; 1461 1462 return 0; 1463 } 1464 1465 case DIOCSSTRATEGY: 1466 { 1467 struct disk_strategy *dks = (void *)addr; 1468 struct bufq_state *new; 1469 struct bufq_state *old; 1470 1471 if ((flag & FWRITE) == 0) { 1472 return EBADF; 1473 } 1474 if (dks->dks_param != NULL) { 1475 return EINVAL; 1476 } 1477 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1478 error = bufq_alloc(&new, dks->dks_name, 1479 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1480 if (error) { 1481 return error; 1482 } 1483 s = splbio(); 1484 old = wd->sc_q; 1485 bufq_move(new, old); 1486 wd->sc_q = new; 1487 splx(s); 1488 bufq_free(old); 1489 1490 return 0; 1491 } 1492 1493 default: 1494 return ENOTTY; 1495 } 1496 1497 #ifdef DIAGNOSTIC 1498 panic("wdioctl: impossible"); 1499 #endif 1500 } 1501 1502 #ifdef B_FORMAT 1503 int 1504 wdformat(struct buf *bp) 1505 { 1506 1507 bp->b_flags |= B_FORMAT; 1508 return wdstrategy(bp); 1509 } 1510 #endif 1511 1512 int 1513 wdsize(dev_t dev) 1514 { 1515 struct wd_softc *wd; 1516 int part, omask; 1517 int size; 1518 1519 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1520 1521 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1522 if (wd == NULL) 1523 return (-1); 1524 1525 part = WDPART(dev); 1526 omask = wd->sc_dk.dk_openmask & (1 << part); 1527 1528 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1529 return (-1); 1530 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1531 size = -1; 1532 else 1533 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1534 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1535 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1536 return (-1); 1537 return (size); 1538 } 1539 1540 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1541 static int wddoingadump = 0; 1542 static int wddumprecalibrated = 0; 1543 1544 /* 1545 * Dump core after a system crash. 1546 */ 1547 int 1548 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1549 { 1550 struct wd_softc *wd; /* disk unit to do the I/O */ 1551 struct disklabel *lp; /* disk's disklabel */ 1552 int part, err; 1553 int nblks; /* total number of sectors left to write */ 1554 1555 /* Check if recursive dump; if so, punt. */ 1556 if (wddoingadump) 1557 return EFAULT; 1558 wddoingadump = 1; 1559 1560 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1561 if (wd == NULL) 1562 return (ENXIO); 1563 1564 part = WDPART(dev); 1565 1566 /* Convert to disk sectors. Request must be a multiple of size. */ 1567 lp = wd->sc_dk.dk_label; 1568 if ((size % lp->d_secsize) != 0) 1569 return EFAULT; 1570 nblks = size / lp->d_secsize; 1571 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1572 1573 /* Check transfer bounds against partition size. */ 1574 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1575 return EINVAL; 1576 1577 /* Offset block number to start of partition. */ 1578 blkno += lp->d_partitions[part].p_offset; 1579 1580 /* Recalibrate, if first dump transfer. */ 1581 if (wddumprecalibrated == 0) { 1582 wddumprecalibrated = 1; 1583 (*wd->atabus->ata_reset_drive)(wd->drvp, 1584 AT_POLL | AT_RST_EMERG); 1585 wd->drvp->state = RESET; 1586 } 1587 1588 wd->sc_bp = NULL; 1589 wd->sc_wdc_bio.blkno = blkno; 1590 wd->sc_wdc_bio.flags = ATA_POLL; 1591 if (wd->sc_flags & WDF_LBA48 && 1592 (blkno > LBA48_THRESHOLD || 1593 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1594 wd->sc_wdc_bio.flags |= ATA_LBA48; 1595 if (wd->sc_flags & WDF_LBA) 1596 wd->sc_wdc_bio.flags |= ATA_LBA; 1597 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1598 wd->sc_wdc_bio.databuf = va; 1599 #ifndef WD_DUMP_NOT_TRUSTED 1600 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1601 case ATACMD_TRY_AGAIN: 1602 panic("wddump: try again"); 1603 break; 1604 case ATACMD_QUEUED: 1605 panic("wddump: polled command has been queued"); 1606 break; 1607 case ATACMD_COMPLETE: 1608 break; 1609 } 1610 switch(wd->sc_wdc_bio.error) { 1611 case TIMEOUT: 1612 printf("wddump: device timed out"); 1613 err = EIO; 1614 break; 1615 case ERR_DF: 1616 printf("wddump: drive fault"); 1617 err = EIO; 1618 break; 1619 case ERR_DMA: 1620 printf("wddump: DMA error"); 1621 err = EIO; 1622 break; 1623 case ERROR: 1624 printf("wddump: "); 1625 wdperror(wd); 1626 err = EIO; 1627 break; 1628 case NOERROR: 1629 err = 0; 1630 break; 1631 default: 1632 panic("wddump: unknown error type"); 1633 } 1634 if (err != 0) { 1635 printf("\n"); 1636 return err; 1637 } 1638 #else /* WD_DUMP_NOT_TRUSTED */ 1639 /* Let's just talk about this first... */ 1640 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1641 unit, va, cylin, head, sector); 1642 delay(500 * 1000); /* half a second */ 1643 #endif 1644 1645 wddoingadump = 0; 1646 return 0; 1647 } 1648 1649 #ifdef HAS_BAD144_HANDLING 1650 /* 1651 * Internalize the bad sector table. 1652 */ 1653 void 1654 bad144intern(struct wd_softc *wd) 1655 { 1656 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1657 struct disklabel *lp = wd->sc_dk.dk_label; 1658 int i = 0; 1659 1660 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1661 1662 for (; i < NBT_BAD; i++) { 1663 if (bt->bt_bad[i].bt_cyl == 0xffff) 1664 break; 1665 wd->sc_badsect[i] = 1666 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1667 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1668 (bt->bt_bad[i].bt_trksec & 0xff); 1669 } 1670 for (; i < NBT_BAD+1; i++) 1671 wd->sc_badsect[i] = -1; 1672 } 1673 #endif 1674 1675 static void 1676 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1677 { 1678 prop_dictionary_t disk_info, odisk_info, geom; 1679 const char *cp; 1680 1681 disk_info = prop_dictionary_create(); 1682 1683 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1684 cp = "ST506"; 1685 else { 1686 /* XXX Should have a case for ATA here, too. */ 1687 cp = "ESDI"; 1688 } 1689 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1690 1691 geom = prop_dictionary_create(); 1692 1693 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1694 1695 prop_dictionary_set_uint32(geom, "sector-size", 1696 DEV_BSIZE /* XXX 512? */); 1697 1698 prop_dictionary_set_uint16(geom, "sectors-per-track", 1699 wd->sc_params.atap_sectors); 1700 1701 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1702 wd->sc_params.atap_heads); 1703 1704 if (wd->sc_flags & WDF_LBA) 1705 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1706 wd->sc_capacity / 1707 (wd->sc_params.atap_heads * 1708 wd->sc_params.atap_sectors)); 1709 else 1710 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1711 wd->sc_params.atap_cylinders); 1712 1713 prop_dictionary_set(disk_info, "geometry", geom); 1714 prop_object_release(geom); 1715 1716 prop_dictionary_set(device_properties(&wd->sc_dev), 1717 "disk-info", disk_info); 1718 1719 /* 1720 * Don't release disk_info here; we keep a reference to it. 1721 * disk_detach() will release it when we go away. 1722 */ 1723 1724 odisk_info = wd->sc_dk.dk_info; 1725 wd->sc_dk.dk_info = disk_info; 1726 if (odisk_info) 1727 prop_object_release(odisk_info); 1728 } 1729 1730 int 1731 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1732 { 1733 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1734 case CMD_AGAIN: 1735 return 1; 1736 case CMD_ERR: 1737 /* 1738 * We `know' there's a drive here; just assume it's old. 1739 * This geometry is only used to read the MBR and print a 1740 * (false) attach message. 1741 */ 1742 strncpy(params->atap_model, "ST506", 1743 sizeof params->atap_model); 1744 params->atap_config = ATA_CFG_FIXED; 1745 params->atap_cylinders = 1024; 1746 params->atap_heads = 8; 1747 params->atap_sectors = 17; 1748 params->atap_multi = 1; 1749 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1750 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1751 /* FALLTHROUGH */ 1752 case CMD_OK: 1753 wd_params_to_properties(wd, params); 1754 return 0; 1755 default: 1756 panic("wd_get_params: bad return code from ata_get_params"); 1757 /* NOTREACHED */ 1758 } 1759 } 1760 1761 int 1762 wd_getcache(struct wd_softc *wd, int *bitsp) 1763 { 1764 struct ataparams params; 1765 1766 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1767 return EIO; 1768 if (params.atap_cmd_set1 == 0x0000 || 1769 params.atap_cmd_set1 == 0xffff || 1770 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1771 *bitsp = 0; 1772 return 0; 1773 } 1774 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1775 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1776 *bitsp |= DKCACHE_WRITE; 1777 1778 return 0; 1779 } 1780 1781 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1782 1783 int 1784 wd_setcache(struct wd_softc *wd, int bits) 1785 { 1786 struct ataparams params; 1787 struct ata_command ata_c; 1788 1789 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1790 return EIO; 1791 1792 if (params.atap_cmd_set1 == 0x0000 || 1793 params.atap_cmd_set1 == 0xffff || 1794 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1795 return EOPNOTSUPP; 1796 1797 if ((bits & DKCACHE_READ) == 0 || 1798 (bits & DKCACHE_SAVE) != 0) 1799 return EOPNOTSUPP; 1800 1801 memset(&ata_c, 0, sizeof(struct ata_command)); 1802 ata_c.r_command = SET_FEATURES; 1803 ata_c.r_st_bmask = 0; 1804 ata_c.r_st_pmask = 0; 1805 ata_c.timeout = 30000; /* 30s timeout */ 1806 ata_c.flags = AT_WAIT; 1807 if (bits & DKCACHE_WRITE) 1808 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1809 else 1810 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1811 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1812 printf("%s: wd_setcache command not complete\n", 1813 wd->sc_dev.dv_xname); 1814 return EIO; 1815 } 1816 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1817 char sbuf[sizeof(at_errbits) + 64]; 1818 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1819 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1820 sbuf); 1821 return EIO; 1822 } 1823 return 0; 1824 } 1825 1826 int 1827 wd_standby(struct wd_softc *wd, int flags) 1828 { 1829 struct ata_command ata_c; 1830 1831 memset(&ata_c, 0, sizeof(struct ata_command)); 1832 ata_c.r_command = WDCC_STANDBY_IMMED; 1833 ata_c.r_st_bmask = WDCS_DRDY; 1834 ata_c.r_st_pmask = WDCS_DRDY; 1835 ata_c.flags = flags; 1836 ata_c.timeout = 30000; /* 30s timeout */ 1837 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1838 printf("%s: standby immediate command didn't complete\n", 1839 wd->sc_dev.dv_xname); 1840 return EIO; 1841 } 1842 if (ata_c.flags & AT_ERROR) { 1843 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1844 return ENODEV; 1845 } 1846 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1847 char sbuf[sizeof(at_errbits) + 64]; 1848 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1849 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1850 sbuf); 1851 return EIO; 1852 } 1853 return 0; 1854 } 1855 1856 int 1857 wd_flushcache(struct wd_softc *wd, int flags) 1858 { 1859 struct ata_command ata_c; 1860 1861 /* 1862 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1863 * only ATA-2 and still support it. 1864 */ 1865 if (wd->drvp->ata_vers < 4 && 1866 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1867 wd->sc_params.atap_cmd_set2 == 0xffff)) 1868 return ENODEV; 1869 memset(&ata_c, 0, sizeof(struct ata_command)); 1870 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1871 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1872 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1873 else 1874 ata_c.r_command = WDCC_FLUSHCACHE; 1875 ata_c.r_st_bmask = WDCS_DRDY; 1876 ata_c.r_st_pmask = WDCS_DRDY; 1877 ata_c.flags = flags; 1878 ata_c.timeout = 30000; /* 30s timeout */ 1879 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1880 printf("%s: flush cache command didn't complete\n", 1881 wd->sc_dev.dv_xname); 1882 return EIO; 1883 } 1884 if (ata_c.flags & AT_ERROR) { 1885 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1886 return ENODEV; 1887 } 1888 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1889 char sbuf[sizeof(at_errbits) + 64]; 1890 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1891 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1892 sbuf); 1893 return EIO; 1894 } 1895 return 0; 1896 } 1897 1898 void 1899 wd_shutdown(void *arg) 1900 { 1901 struct wd_softc *wd = arg; 1902 wd_flushcache(wd, AT_POLL); 1903 } 1904 1905 /* 1906 * Allocate space for a ioctl queue structure. Mostly taken from 1907 * scsipi_ioctl.c 1908 */ 1909 struct wd_ioctl * 1910 wi_get(void) 1911 { 1912 struct wd_ioctl *wi; 1913 int s; 1914 1915 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1916 BUF_INIT(&wi->wi_bp); 1917 s = splbio(); 1918 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1919 splx(s); 1920 return (wi); 1921 } 1922 1923 /* 1924 * Free an ioctl structure and remove it from our list 1925 */ 1926 1927 void 1928 wi_free(struct wd_ioctl *wi) 1929 { 1930 int s; 1931 1932 s = splbio(); 1933 LIST_REMOVE(wi, wi_list); 1934 splx(s); 1935 BUF_DESTROY(&wi->wi_bp); 1936 free(wi, M_TEMP); 1937 } 1938 1939 /* 1940 * Find a wd_ioctl structure based on the struct buf. 1941 */ 1942 1943 struct wd_ioctl * 1944 wi_find(struct buf *bp) 1945 { 1946 struct wd_ioctl *wi; 1947 int s; 1948 1949 s = splbio(); 1950 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1951 if (bp == &wi->wi_bp) 1952 break; 1953 splx(s); 1954 return (wi); 1955 } 1956 1957 /* 1958 * Ioctl pseudo strategy routine 1959 * 1960 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1961 * happens here is: 1962 * 1963 * - wdioctl() queues a wd_ioctl structure. 1964 * 1965 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1966 * user space I/O is required. If physio() is called, physio() eventually 1967 * calls wdioctlstrategy(). 1968 * 1969 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1970 * to perform the actual command 1971 * 1972 * The reason for the use of the pseudo strategy routine is because 1973 * when doing I/O to/from user space, physio _really_ wants to be in 1974 * the loop. We could put the entire buffer into the ioctl request 1975 * structure, but that won't scale if we want to do things like download 1976 * microcode. 1977 */ 1978 1979 void 1980 wdioctlstrategy(struct buf *bp) 1981 { 1982 struct wd_ioctl *wi; 1983 struct ata_command ata_c; 1984 int error = 0; 1985 1986 wi = wi_find(bp); 1987 if (wi == NULL) { 1988 printf("wdioctlstrategy: " 1989 "No matching ioctl request found in queue\n"); 1990 error = EINVAL; 1991 goto bad; 1992 } 1993 1994 memset(&ata_c, 0, sizeof(ata_c)); 1995 1996 /* 1997 * Abort if physio broke up the transfer 1998 */ 1999 2000 if (bp->b_bcount != wi->wi_atareq.datalen) { 2001 printf("physio split wd ioctl request... cannot proceed\n"); 2002 error = EIO; 2003 goto bad; 2004 } 2005 2006 /* 2007 * Abort if we didn't get a buffer size that was a multiple of 2008 * our sector size (or was larger than NBBY) 2009 */ 2010 2011 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2012 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2013 (1 << NBBY)) { 2014 error = EINVAL; 2015 goto bad; 2016 } 2017 2018 /* 2019 * Make sure a timeout was supplied in the ioctl request 2020 */ 2021 2022 if (wi->wi_atareq.timeout == 0) { 2023 error = EINVAL; 2024 goto bad; 2025 } 2026 2027 if (wi->wi_atareq.flags & ATACMD_READ) 2028 ata_c.flags |= AT_READ; 2029 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2030 ata_c.flags |= AT_WRITE; 2031 2032 if (wi->wi_atareq.flags & ATACMD_READREG) 2033 ata_c.flags |= AT_READREG; 2034 2035 ata_c.flags |= AT_WAIT; 2036 2037 ata_c.timeout = wi->wi_atareq.timeout; 2038 ata_c.r_command = wi->wi_atareq.command; 2039 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2040 ata_c.r_cyl = wi->wi_atareq.cylinder; 2041 ata_c.r_sector = wi->wi_atareq.sec_num; 2042 ata_c.r_count = wi->wi_atareq.sec_count; 2043 ata_c.r_features = wi->wi_atareq.features; 2044 ata_c.r_st_bmask = WDCS_DRDY; 2045 ata_c.r_st_pmask = WDCS_DRDY; 2046 ata_c.data = wi->wi_bp.b_data; 2047 ata_c.bcount = wi->wi_bp.b_bcount; 2048 2049 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2050 != ATACMD_COMPLETE) { 2051 wi->wi_atareq.retsts = ATACMD_ERROR; 2052 goto bad; 2053 } 2054 2055 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2056 if (ata_c.flags & AT_ERROR) { 2057 wi->wi_atareq.retsts = ATACMD_ERROR; 2058 wi->wi_atareq.error = ata_c.r_error; 2059 } else if (ata_c.flags & AT_DF) 2060 wi->wi_atareq.retsts = ATACMD_DF; 2061 else 2062 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2063 } else { 2064 wi->wi_atareq.retsts = ATACMD_OK; 2065 if (wi->wi_atareq.flags & ATACMD_READREG) { 2066 wi->wi_atareq.head = ata_c.r_head ; 2067 wi->wi_atareq.cylinder = ata_c.r_cyl; 2068 wi->wi_atareq.sec_num = ata_c.r_sector; 2069 wi->wi_atareq.sec_count = ata_c.r_count; 2070 wi->wi_atareq.features = ata_c.r_features; 2071 wi->wi_atareq.error = ata_c.r_error; 2072 } 2073 } 2074 2075 biodone(bp, 0, 0); 2076 return; 2077 bad: 2078 biodone(bp, error, bp->b_bcount); 2079 } 2080
Indexes created Sun Oct 19 02:09:48 GMT 2025