wd.c revision 1.335
1 /* $NetBSD: wd.c,v 1.335 2006/11/16 01:32:48 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 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 1.335 2006/11/16 01:32:48 christos Exp $"); 70 71 #ifndef ATADEBUG 72 #define ATADEBUG 73 #endif /* ATADEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/bufq.h> 86 #include <sys/uio.h> 87 #include <sys/malloc.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/disk.h> 91 #include <sys/syslog.h> 92 #include <sys/proc.h> 93 #include <sys/vnode.h> 94 #if NRND > 0 95 #include <sys/rnd.h> 96 #endif 97 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #include <dev/ata/atareg.h> 102 #include <dev/ata/atavar.h> 103 #include <dev/ata/wdvar.h> 104 #include <dev/ic/wdcreg.h> 105 #include <sys/ataio.h> 106 #include "locators.h" 107 108 #include <prop/proplib.h> 109 110 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 111 112 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 113 #define WDIORETRIES 5 /* number of retries before giving up */ 114 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 115 116 #define WDUNIT(dev) DISKUNIT(dev) 117 #define WDPART(dev) DISKPART(dev) 118 #define WDMINOR(unit, part) DISKMINOR(unit, part) 119 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 120 121 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 122 123 #define DEBUG_INTR 0x01 124 #define DEBUG_XFERS 0x02 125 #define DEBUG_STATUS 0x04 126 #define DEBUG_FUNCS 0x08 127 #define DEBUG_PROBE 0x10 128 #ifdef ATADEBUG 129 int wdcdebug_wd_mask = 0x0; 130 #define ATADEBUG_PRINT(args, level) \ 131 if (wdcdebug_wd_mask & (level)) \ 132 printf args 133 #else 134 #define ATADEBUG_PRINT(args, level) 135 #endif 136 137 int wdprobe(struct device *, struct cfdata *, void *); 138 void wdattach(struct device *, struct device *, void *); 139 int wddetach(struct device *, int); 140 int wdactivate(struct device *, enum devact); 141 int wdprint(void *, char *); 142 void wdperror(const struct wd_softc *); 143 144 CFATTACH_DECL(wd, sizeof(struct wd_softc), 145 wdprobe, wdattach, wddetach, wdactivate); 146 147 extern struct cfdriver wd_cd; 148 149 dev_type_open(wdopen); 150 dev_type_close(wdclose); 151 dev_type_read(wdread); 152 dev_type_write(wdwrite); 153 dev_type_ioctl(wdioctl); 154 dev_type_strategy(wdstrategy); 155 dev_type_dump(wddump); 156 dev_type_size(wdsize); 157 158 const struct bdevsw wd_bdevsw = { 159 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 160 }; 161 162 const struct cdevsw wd_cdevsw = { 163 wdopen, wdclose, wdread, wdwrite, wdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 /* 168 * Glue necessary to hook WDCIOCCOMMAND into physio 169 */ 170 171 struct wd_ioctl { 172 LIST_ENTRY(wd_ioctl) wi_list; 173 struct buf wi_bp; 174 struct uio wi_uio; 175 struct iovec wi_iov; 176 atareq_t wi_atareq; 177 struct wd_softc *wi_softc; 178 }; 179 180 LIST_HEAD(, wd_ioctl) wi_head; 181 182 struct wd_ioctl *wi_find(struct buf *); 183 void wi_free(struct wd_ioctl *); 184 struct wd_ioctl *wi_get(void); 185 void wdioctlstrategy(struct buf *); 186 187 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 188 void wdgetdisklabel(struct wd_softc *); 189 void wdstart(void *); 190 void __wdstart(struct wd_softc*, struct buf *); 191 void wdrestart(void *); 192 void wddone(void *); 193 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 194 int wd_standby(struct wd_softc *, int); 195 int wd_flushcache(struct wd_softc *, int); 196 void wd_shutdown(void *); 197 198 int wd_getcache(struct wd_softc *, int *); 199 int wd_setcache(struct wd_softc *, int); 200 201 struct dkdriver wddkdriver = { wdstrategy, minphys }; 202 203 #ifdef HAS_BAD144_HANDLING 204 static void bad144intern(struct wd_softc *); 205 #endif 206 207 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 208 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 209 210 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 211 212 /* 213 * Quirk table for IDE drives. Put more-specific matches first, since 214 * a simple globbing routine is used for matching. 215 */ 216 static const struct wd_quirk { 217 const char *wdq_match; /* inquiry pattern to match */ 218 int wdq_quirks; /* drive quirks */ 219 } wd_quirk_table[] = { 220 /* 221 * Some Seagate S-ATA drives have a PHY which can get confused 222 * with the way data is packetized by some S-ATA controllers. 223 * 224 * The work-around is to split in two any write transfer whose 225 * sector count % 15 == 1 (assuming 512 byte sectors). 226 * 227 * XXX This is an incomplete list. There are at least a couple 228 * XXX more model numbers. If you have trouble with such transfers 229 * XXX (8K is the most common) on Seagate S-ATA drives, please 230 * XXX notify thorpej (at) NetBSD.org. 231 */ 232 { "ST3120023AS", 233 WD_QUIRK_SPLIT_MOD15_WRITE }, 234 { "ST380023AS", 235 WD_QUIRK_SPLIT_MOD15_WRITE }, 236 237 /* 238 * These seagate drives seems to have issue addressing sector 0xfffffff 239 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 240 * LBA48 241 * Note that we can't just change the code to always use LBA48 for 242 * sector 0xfffffff, because this would break valid and working 243 * setups using LBA48 drives on non-LBA48-capable controllers 244 * (and it's hard to get a list of such controllers) 245 */ 246 { "ST3160021A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160811A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 { "ST3160812A*", 251 WD_QUIRK_FORCE_LBA48 }, 252 { "ST3160023A*", 253 WD_QUIRK_FORCE_LBA48 }, 254 { "ST3160827A*", 255 WD_QUIRK_FORCE_LBA48 }, 256 /* Attempt to catch all seagate drives larger than 200GB */ 257 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 258 WD_QUIRK_FORCE_LBA48 }, 259 { NULL, 260 0 } 261 }; 262 263 static const struct wd_quirk * 264 wd_lookup_quirks(const char *name) 265 { 266 const struct wd_quirk *wdq; 267 const char *estr; 268 269 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 270 /* 271 * We only want exact matches (which include matches 272 * against globbing characters). 273 */ 274 if (pmatch(name, wdq->wdq_match, &estr) == 2) 275 return (wdq); 276 } 277 return (NULL); 278 } 279 280 int 281 wdprobe(struct device *parent, struct cfdata *match, void *aux) 282 { 283 struct ata_device *adev = aux; 284 285 if (adev == NULL) 286 return 0; 287 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 288 return 0; 289 290 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 291 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 292 return 0; 293 return 1; 294 } 295 296 void 297 wdattach(struct device *parent, struct device *self, void *aux) 298 { 299 struct wd_softc *wd = (void *)self; 300 struct ata_device *adev= aux; 301 int i, blank; 302 char tbuf[41], pbuf[9], c, *p, *q; 303 const struct wd_quirk *wdq; 304 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 305 306 callout_init(&wd->sc_restart_ch); 307 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 308 #ifdef WD_SOFTBADSECT 309 SLIST_INIT(&wd->sc_bslist); 310 #endif 311 wd->atabus = adev->adev_bustype; 312 wd->openings = adev->adev_openings; 313 wd->drvp = adev->adev_drv_data; 314 315 wd->drvp->drv_done = wddone; 316 wd->drvp->drv_softc = &wd->sc_dev; 317 318 aprint_naive("\n"); 319 320 /* read our drive info */ 321 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 322 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 323 return; 324 } 325 326 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 327 i < sizeof(wd->sc_params.atap_model); i++) { 328 c = *p++; 329 if (c == '\0') 330 break; 331 if (c != ' ') { 332 if (blank) { 333 *q++ = ' '; 334 blank = 0; 335 } 336 *q++ = c; 337 } else 338 blank = 1; 339 } 340 *q++ = '\0'; 341 342 aprint_normal(": <%s>\n", tbuf); 343 344 wdq = wd_lookup_quirks(tbuf); 345 if (wdq != NULL) 346 wd->sc_quirks = wdq->wdq_quirks; 347 348 if (wd->sc_quirks != 0) { 349 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 350 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 351 sbuf, sizeof(sbuf)); 352 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 353 } 354 355 if ((wd->sc_params.atap_multi & 0xff) > 1) { 356 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 357 } else { 358 wd->sc_multi = 1; 359 } 360 361 aprint_normal("%s: drive supports %d-sector PIO transfers,", 362 wd->sc_dev.dv_xname, wd->sc_multi); 363 364 /* 48-bit LBA addressing */ 365 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 366 wd->sc_flags |= WDF_LBA48; 367 368 /* Prior to ATA-4, LBA was optional. */ 369 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 370 wd->sc_flags |= WDF_LBA; 371 #if 0 372 /* ATA-4 requires LBA. */ 373 if (wd->sc_params.atap_ataversion != 0xffff && 374 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 375 wd->sc_flags |= WDF_LBA; 376 #endif 377 378 if ((wd->sc_flags & WDF_LBA48) != 0) { 379 aprint_normal(" LBA48 addressing\n"); 380 wd->sc_capacity = 381 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 382 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 383 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 384 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 385 } else if ((wd->sc_flags & WDF_LBA) != 0) { 386 aprint_normal(" LBA addressing\n"); 387 wd->sc_capacity = 388 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 389 wd->sc_params.atap_capacity[0]; 390 } else { 391 aprint_normal(" chs addressing\n"); 392 wd->sc_capacity = 393 wd->sc_params.atap_cylinders * 394 wd->sc_params.atap_heads * 395 wd->sc_params.atap_sectors; 396 } 397 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 398 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 399 "%d bytes/sect x %llu sectors\n", 400 self->dv_xname, pbuf, 401 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 402 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 403 wd->sc_params.atap_cylinders, 404 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 405 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 406 407 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 408 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 409 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 410 /* 411 * Initialize and attach the disk structure. 412 */ 413 wd->sc_dk.dk_driver = &wddkdriver; 414 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 415 /* we fill in dk_info later */ 416 disk_attach(&wd->sc_dk); 417 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 418 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 419 if (wd->sc_sdhook == NULL) 420 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 421 wd->sc_dev.dv_xname); 422 #if NRND > 0 423 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 424 RND_TYPE_DISK, 0); 425 #endif 426 427 /* Discover wedges on this disk. */ 428 dkwedge_discover(&wd->sc_dk); 429 } 430 431 int 432 wdactivate(struct device *self, enum devact act) 433 { 434 int rv = 0; 435 436 switch (act) { 437 case DVACT_ACTIVATE: 438 rv = EOPNOTSUPP; 439 break; 440 441 case DVACT_DEACTIVATE: 442 /* 443 * Nothing to do; we key off the device's DVF_ACTIVATE. 444 */ 445 break; 446 } 447 return (rv); 448 } 449 450 int 451 wddetach(struct device *self, int flags) 452 { 453 struct wd_softc *sc = (struct wd_softc *)self; 454 int s, bmaj, cmaj, i, mn; 455 456 /* locate the major number */ 457 bmaj = bdevsw_lookup_major(&wd_bdevsw); 458 cmaj = cdevsw_lookup_major(&wd_cdevsw); 459 460 /* Nuke the vnodes for any open instances. */ 461 for (i = 0; i < MAXPARTITIONS; i++) { 462 mn = WDMINOR(device_unit(self), i); 463 vdevgone(bmaj, mn, mn, VBLK); 464 vdevgone(cmaj, mn, mn, VCHR); 465 } 466 467 /* Delete all of our wedges. */ 468 dkwedge_delall(&sc->sc_dk); 469 470 s = splbio(); 471 472 /* Kill off any queued buffers. */ 473 bufq_drain(sc->sc_q); 474 475 bufq_free(sc->sc_q); 476 sc->atabus->ata_killpending(sc->drvp); 477 478 splx(s); 479 480 /* Detach disk. */ 481 disk_detach(&sc->sc_dk); 482 483 #ifdef WD_SOFTBADSECT 484 /* Clean out the bad sector list */ 485 while (!SLIST_EMPTY(&sc->sc_bslist)) { 486 void *head = SLIST_FIRST(&sc->sc_bslist); 487 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 488 free(head, M_TEMP); 489 } 490 sc->sc_bscount = 0; 491 #endif 492 493 /* Get rid of the shutdown hook. */ 494 if (sc->sc_sdhook != NULL) 495 shutdownhook_disestablish(sc->sc_sdhook); 496 497 #if NRND > 0 498 /* Unhook the entropy source. */ 499 rnd_detach_source(&sc->rnd_source); 500 #endif 501 502 sc->drvp->drive_flags = 0; /* no drive any more here */ 503 504 return (0); 505 } 506 507 /* 508 * Read/write routine for a buffer. Validates the arguments and schedules the 509 * transfer. Does not wait for the transfer to complete. 510 */ 511 void 512 wdstrategy(struct buf *bp) 513 { 514 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 515 struct disklabel *lp = wd->sc_dk.dk_label; 516 daddr_t blkno; 517 int s; 518 519 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 520 DEBUG_XFERS); 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 bp->b_error = EINVAL; 527 goto bad; 528 } 529 530 /* If device invalidated (e.g. media change, door open), error. */ 531 if ((wd->sc_flags & WDF_LOADED) == 0) { 532 bp->b_error = EIO; 533 goto bad; 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 bad: 597 bp->b_flags |= B_ERROR; 598 done: 599 /* Toss transfer; we're done early. */ 600 bp->b_resid = bp->b_bcount; 601 biodone(bp); 602 } 603 604 /* 605 * Queue a drive for I/O. 606 */ 607 void 608 wdstart(void *arg) 609 { 610 struct wd_softc *wd = arg; 611 struct buf *bp = NULL; 612 613 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 614 DEBUG_XFERS); 615 while (wd->openings > 0) { 616 617 /* Is there a buf for us ? */ 618 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 619 return; 620 621 /* 622 * Make the command. First lock the device 623 */ 624 wd->openings--; 625 626 wd->retries = 0; 627 __wdstart(wd, bp); 628 } 629 } 630 631 static void 632 wd_split_mod15_write(struct buf *bp) 633 { 634 struct buf *obp = bp->b_private; 635 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 636 637 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 638 /* 639 * Propagate the error. If this was the first half of 640 * the original transfer, make sure to account for that 641 * in the residual. 642 */ 643 if (bp->b_data == obp->b_data) 644 bp->b_resid += bp->b_bcount; 645 goto done; 646 } 647 648 /* 649 * If this was the second half of the transfer, we're all done! 650 */ 651 if (bp->b_data != obp->b_data) 652 goto done; 653 654 /* 655 * Advance the pointer to the second half and issue that command 656 * using the same opening. 657 */ 658 bp->b_flags = obp->b_flags | B_CALL; 659 bp->b_data += bp->b_bcount; 660 bp->b_blkno += (bp->b_bcount / 512); 661 bp->b_rawblkno += (bp->b_bcount / 512); 662 __wdstart(sc, bp); 663 return; 664 665 done: 666 obp->b_flags |= bp->b_flags & B_ERROR; 667 obp->b_error = bp->b_error; 668 obp->b_resid = bp->b_resid; 669 putiobuf(bp); 670 biodone(obp); 671 sc->openings++; 672 /* wddone() will call wdstart() */ 673 } 674 675 void 676 __wdstart(struct wd_softc *wd, struct buf *bp) 677 { 678 679 /* 680 * Deal with the "split mod15 write" quirk. We just divide the 681 * transfer in two, doing the first half and then then second half 682 * with the same command opening. 683 * 684 * Note we MUST do this here, because we can't let insertion 685 * into the bufq cause the transfers to be re-merged. 686 */ 687 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 688 (bp->b_flags & B_READ) == 0 && 689 bp->b_bcount > 512 && 690 ((bp->b_bcount / 512) % 15) == 1)) { 691 struct buf *nbp; 692 693 /* already at splbio */ 694 nbp = getiobuf_nowait(); 695 if (__predict_false(nbp == NULL)) { 696 /* No memory -- fail the iop. */ 697 bp->b_error = ENOMEM; 698 bp->b_flags |= B_ERROR; 699 bp->b_resid = bp->b_bcount; 700 biodone(bp); 701 wd->openings++; 702 return; 703 } 704 705 nbp->b_error = 0; 706 nbp->b_proc = bp->b_proc; 707 nbp->b_vp = NULLVP; 708 nbp->b_dev = bp->b_dev; 709 710 nbp->b_bcount = bp->b_bcount / 2; 711 nbp->b_bufsize = bp->b_bcount / 2; 712 nbp->b_data = bp->b_data; 713 714 nbp->b_blkno = bp->b_blkno; 715 nbp->b_rawblkno = bp->b_rawblkno; 716 717 nbp->b_flags = bp->b_flags | B_CALL; 718 nbp->b_iodone = wd_split_mod15_write; 719 720 /* Put ptr to orig buf in b_private and use new buf */ 721 nbp->b_private = bp; 722 723 BIO_COPYPRIO(nbp, bp); 724 725 bp = nbp; 726 } 727 728 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 729 wd->sc_wdc_bio.blkdone =0; 730 wd->sc_bp = bp; 731 /* 732 * If we're retrying, retry in single-sector mode. This will give us 733 * the sector number of the problem, and will eventually allow the 734 * transfer to succeed. 735 */ 736 if (wd->retries >= WDIORETRIES_SINGLE) 737 wd->sc_wdc_bio.flags = ATA_SINGLE; 738 else 739 wd->sc_wdc_bio.flags = 0; 740 if (wd->sc_flags & WDF_LBA48 && 741 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 742 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 743 wd->sc_wdc_bio.flags |= ATA_LBA48; 744 if (wd->sc_flags & WDF_LBA) 745 wd->sc_wdc_bio.flags |= ATA_LBA; 746 if (bp->b_flags & B_READ) 747 wd->sc_wdc_bio.flags |= ATA_READ; 748 wd->sc_wdc_bio.bcount = bp->b_bcount; 749 wd->sc_wdc_bio.databuf = bp->b_data; 750 /* Instrumentation. */ 751 disk_busy(&wd->sc_dk); 752 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 753 case ATACMD_TRY_AGAIN: 754 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 755 break; 756 case ATACMD_QUEUED: 757 case ATACMD_COMPLETE: 758 break; 759 default: 760 panic("__wdstart: bad return code from ata_bio()"); 761 } 762 } 763 764 void 765 wddone(void *v) 766 { 767 struct wd_softc *wd = v; 768 struct buf *bp = wd->sc_bp; 769 const char *errmsg; 770 int do_perror = 0; 771 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 772 DEBUG_XFERS); 773 774 if (bp == NULL) 775 return; 776 bp->b_resid = wd->sc_wdc_bio.bcount; 777 switch (wd->sc_wdc_bio.error) { 778 case ERR_DMA: 779 errmsg = "DMA error"; 780 goto retry; 781 case ERR_DF: 782 errmsg = "device fault"; 783 goto retry; 784 case TIMEOUT: 785 errmsg = "device timeout"; 786 goto retry; 787 case ERR_RESET: 788 errmsg = "channel reset"; 789 goto retry2; 790 case ERROR: 791 /* Don't care about media change bits */ 792 if (wd->sc_wdc_bio.r_error != 0 && 793 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 794 goto noerror; 795 errmsg = "error"; 796 do_perror = 1; 797 retry: /* Just reset and retry. Can we do more ? */ 798 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 799 retry2: 800 diskerr(bp, "wd", errmsg, LOG_PRINTF, 801 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 802 if (wd->retries < WDIORETRIES) 803 printf(", retrying\n"); 804 if (do_perror) 805 wdperror(wd); 806 if (wd->retries < WDIORETRIES) { 807 wd->retries++; 808 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 809 wdrestart, wd); 810 return; 811 } 812 printf("\n"); 813 814 #ifdef WD_SOFTBADSECT 815 /* 816 * Not all errors indicate a failed block but those that do, 817 * put the block on the bad-block list for the device. Only 818 * do this for reads because the drive should do it for writes, 819 * itself, according to Manuel. 820 */ 821 if ((bp->b_flags & B_READ) && 822 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 823 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 824 struct disk_badsectors *dbs; 825 826 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 827 dbs->dbs_min = bp->b_rawblkno; 828 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 829 microtime(&dbs->dbs_failedat); 830 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 831 wd->sc_bscount++; 832 } 833 #endif 834 bp->b_flags |= B_ERROR; 835 bp->b_error = EIO; 836 break; 837 case NOERROR: 838 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 839 printf("%s: soft error (corrected)\n", 840 wd->sc_dev.dv_xname); 841 break; 842 case ERR_NODEV: 843 bp->b_flags |= B_ERROR; 844 bp->b_error = EIO; 845 break; 846 } 847 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 848 (bp->b_flags & B_READ)); 849 #if NRND > 0 850 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 851 #endif 852 /* XXX Yuck, but we don't want to increment openings in this case */ 853 if (__predict_false((bp->b_flags & B_CALL) != 0 && 854 bp->b_iodone == wd_split_mod15_write)) 855 biodone(bp); 856 else { 857 biodone(bp); 858 wd->openings++; 859 } 860 wdstart(wd); 861 } 862 863 void 864 wdrestart(void *v) 865 { 866 struct wd_softc *wd = v; 867 struct buf *bp = wd->sc_bp; 868 int s; 869 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 870 DEBUG_XFERS); 871 872 s = splbio(); 873 __wdstart(v, bp); 874 splx(s); 875 } 876 877 int 878 wdread(dev_t dev, struct uio *uio, int flags) 879 { 880 881 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 882 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 883 } 884 885 int 886 wdwrite(dev_t dev, struct uio *uio, int flags) 887 { 888 889 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 890 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 891 } 892 893 int 894 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 895 { 896 struct wd_softc *wd; 897 int part, error; 898 899 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 900 wd = device_lookup(&wd_cd, WDUNIT(dev)); 901 if (wd == NULL) 902 return (ENXIO); 903 904 if (! device_is_active(&wd->sc_dev)) 905 return (ENODEV); 906 907 part = WDPART(dev); 908 909 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 910 return (error); 911 912 /* 913 * If there are wedges, and this is not RAW_PART, then we 914 * need to fail. 915 */ 916 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 917 error = EBUSY; 918 goto bad1; 919 } 920 921 /* 922 * If this is the first open of this device, add a reference 923 * to the adapter. 924 */ 925 if (wd->sc_dk.dk_openmask == 0 && 926 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 927 goto bad1; 928 929 if (wd->sc_dk.dk_openmask != 0) { 930 /* 931 * If any partition is open, but the disk has been invalidated, 932 * disallow further opens. 933 */ 934 if ((wd->sc_flags & WDF_LOADED) == 0) { 935 error = EIO; 936 goto bad2; 937 } 938 } else { 939 if ((wd->sc_flags & WDF_LOADED) == 0) { 940 wd->sc_flags |= WDF_LOADED; 941 942 /* Load the physical device parameters. */ 943 wd_get_params(wd, AT_WAIT, &wd->sc_params); 944 945 /* Load the partition info if not already loaded. */ 946 wdgetdisklabel(wd); 947 } 948 } 949 950 /* Check that the partition exists. */ 951 if (part != RAW_PART && 952 (part >= wd->sc_dk.dk_label->d_npartitions || 953 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 954 error = ENXIO; 955 goto bad2; 956 } 957 958 /* Insure only one open at a time. */ 959 switch (fmt) { 960 case S_IFCHR: 961 wd->sc_dk.dk_copenmask |= (1 << part); 962 break; 963 case S_IFBLK: 964 wd->sc_dk.dk_bopenmask |= (1 << part); 965 break; 966 } 967 wd->sc_dk.dk_openmask = 968 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 969 970 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 971 return 0; 972 973 bad2: 974 if (wd->sc_dk.dk_openmask == 0) 975 wd->atabus->ata_delref(wd->drvp); 976 bad1: 977 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 978 return error; 979 } 980 981 int 982 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 983 { 984 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 985 int part = WDPART(dev); 986 int error; 987 988 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 989 990 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 991 return error; 992 993 switch (fmt) { 994 case S_IFCHR: 995 wd->sc_dk.dk_copenmask &= ~(1 << part); 996 break; 997 case S_IFBLK: 998 wd->sc_dk.dk_bopenmask &= ~(1 << part); 999 break; 1000 } 1001 wd->sc_dk.dk_openmask = 1002 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1003 1004 if (wd->sc_dk.dk_openmask == 0) { 1005 wd_flushcache(wd, AT_WAIT); 1006 1007 if (! (wd->sc_flags & WDF_KLABEL)) 1008 wd->sc_flags &= ~WDF_LOADED; 1009 1010 wd->atabus->ata_delref(wd->drvp); 1011 } 1012 1013 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1014 return 0; 1015 } 1016 1017 void 1018 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1019 { 1020 1021 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1022 memset(lp, 0, sizeof(struct disklabel)); 1023 1024 lp->d_secsize = DEV_BSIZE; 1025 lp->d_ntracks = wd->sc_params.atap_heads; 1026 lp->d_nsectors = wd->sc_params.atap_sectors; 1027 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1028 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1029 wd->sc_params.atap_cylinders; 1030 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1031 1032 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1033 lp->d_type = DTYPE_ST506; 1034 else 1035 lp->d_type = DTYPE_ESDI; 1036 1037 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1038 strncpy(lp->d_packname, "fictitious", 16); 1039 if (wd->sc_capacity > UINT32_MAX) 1040 lp->d_secperunit = UINT32_MAX; 1041 else 1042 lp->d_secperunit = wd->sc_capacity; 1043 lp->d_rpm = 3600; 1044 lp->d_interleave = 1; 1045 lp->d_flags = 0; 1046 1047 lp->d_partitions[RAW_PART].p_offset = 0; 1048 lp->d_partitions[RAW_PART].p_size = 1049 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1050 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1051 lp->d_npartitions = RAW_PART + 1; 1052 1053 lp->d_magic = DISKMAGIC; 1054 lp->d_magic2 = DISKMAGIC; 1055 lp->d_checksum = dkcksum(lp); 1056 } 1057 1058 /* 1059 * Fabricate a default disk label, and try to read the correct one. 1060 */ 1061 void 1062 wdgetdisklabel(struct wd_softc *wd) 1063 { 1064 struct disklabel *lp = wd->sc_dk.dk_label; 1065 const char *errstring; 1066 int s; 1067 1068 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1069 1070 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1071 1072 wdgetdefaultlabel(wd, lp); 1073 1074 wd->sc_badsect[0] = -1; 1075 1076 if (wd->drvp->state > RESET) { 1077 s = splbio(); 1078 wd->drvp->drive_flags |= DRIVE_RESET; 1079 splx(s); 1080 } 1081 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1082 RAW_PART), wdstrategy, lp, 1083 wd->sc_dk.dk_cpulabel); 1084 if (errstring) { 1085 /* 1086 * This probably happened because the drive's default 1087 * geometry doesn't match the DOS geometry. We 1088 * assume the DOS geometry is now in the label and try 1089 * again. XXX This is a kluge. 1090 */ 1091 if (wd->drvp->state > RESET) { 1092 s = splbio(); 1093 wd->drvp->drive_flags |= DRIVE_RESET; 1094 splx(s); 1095 } 1096 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1097 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1098 } 1099 if (errstring) { 1100 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1101 return; 1102 } 1103 1104 if (wd->drvp->state > RESET) { 1105 s = splbio(); 1106 wd->drvp->drive_flags |= DRIVE_RESET; 1107 splx(s); 1108 } 1109 #ifdef HAS_BAD144_HANDLING 1110 if ((lp->d_flags & D_BADSECT) != 0) 1111 bad144intern(wd); 1112 #endif 1113 } 1114 1115 void 1116 wdperror(const struct wd_softc *wd) 1117 { 1118 static const char *const errstr0_3[] = {"address mark not found", 1119 "track 0 not found", "aborted command", "media change requested", 1120 "id not found", "media changed", "uncorrectable data error", 1121 "bad block detected"}; 1122 static const char *const errstr4_5[] = { 1123 "obsolete (address mark not found)", 1124 "no media/write protected", "aborted command", 1125 "media change requested", "id not found", "media changed", 1126 "uncorrectable data error", "interface CRC error"}; 1127 const char *const *errstr; 1128 int i; 1129 const char *sep = ""; 1130 1131 const char *devname = wd->sc_dev.dv_xname; 1132 struct ata_drive_datas *drvp = wd->drvp; 1133 int errno = wd->sc_wdc_bio.r_error; 1134 1135 if (drvp->ata_vers >= 4) 1136 errstr = errstr4_5; 1137 else 1138 errstr = errstr0_3; 1139 1140 printf("%s: (", devname); 1141 1142 if (errno == 0) 1143 printf("error not notified"); 1144 1145 for (i = 0; i < 8; i++) { 1146 if (errno & (1 << i)) { 1147 printf("%s%s", sep, errstr[i]); 1148 sep = ", "; 1149 } 1150 } 1151 printf(")\n"); 1152 } 1153 1154 int 1155 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct lwp *l) 1156 { 1157 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1158 int error = 0, s; 1159 #ifdef __HAVE_OLD_DISKLABEL 1160 struct disklabel *newlabel = NULL; 1161 #endif 1162 1163 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1164 1165 if ((wd->sc_flags & WDF_LOADED) == 0) 1166 return EIO; 1167 1168 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1169 if (error != EPASSTHROUGH) 1170 return (error); 1171 1172 switch (xfer) { 1173 #ifdef HAS_BAD144_HANDLING 1174 case DIOCSBAD: 1175 if ((flag & FWRITE) == 0) 1176 return EBADF; 1177 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1178 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1179 bad144intern(wd); 1180 return 0; 1181 #endif 1182 #ifdef WD_SOFTBADSECT 1183 case DIOCBSLIST : 1184 { 1185 u_int32_t count, missing, skip; 1186 struct disk_badsecinfo dbsi; 1187 struct disk_badsectors *dbs; 1188 size_t available; 1189 caddr_t laddr; 1190 1191 dbsi = *(struct disk_badsecinfo *)addr; 1192 missing = wd->sc_bscount; 1193 count = 0; 1194 available = dbsi.dbsi_bufsize; 1195 skip = dbsi.dbsi_skip; 1196 laddr = dbsi.dbsi_buffer; 1197 1198 /* 1199 * We start this loop with the expectation that all of the 1200 * entries will be missed and decrement this counter each 1201 * time we either skip over one (already copied out) or 1202 * we actually copy it back to user space. The structs 1203 * holding the bad sector information are copied directly 1204 * back to user space whilst the summary is returned via 1205 * the struct passed in via the ioctl. 1206 */ 1207 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1208 if (skip > 0) { 1209 missing--; 1210 skip--; 1211 continue; 1212 } 1213 if (available < sizeof(*dbs)) 1214 break; 1215 available -= sizeof(*dbs); 1216 copyout(dbs, laddr, sizeof(*dbs)); 1217 laddr += sizeof(*dbs); 1218 missing--; 1219 count++; 1220 } 1221 dbsi.dbsi_left = missing; 1222 dbsi.dbsi_copied = count; 1223 *(struct disk_badsecinfo *)addr = dbsi; 1224 return 0; 1225 } 1226 1227 case DIOCBSFLUSH : 1228 /* Clean out the bad sector list */ 1229 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1230 void *head = SLIST_FIRST(&wd->sc_bslist); 1231 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1232 free(head, M_TEMP); 1233 } 1234 wd->sc_bscount = 0; 1235 return 0; 1236 #endif 1237 case DIOCGDINFO: 1238 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1239 return 0; 1240 #ifdef __HAVE_OLD_DISKLABEL 1241 case ODIOCGDINFO: 1242 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1243 if (newlabel == NULL) 1244 return EIO; 1245 *newlabel = *(wd->sc_dk.dk_label); 1246 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1247 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1248 else 1249 error = ENOTTY; 1250 free(newlabel, M_TEMP); 1251 return error; 1252 #endif 1253 1254 case DIOCGPART: 1255 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1256 ((struct partinfo *)addr)->part = 1257 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1258 return 0; 1259 1260 case DIOCWDINFO: 1261 case DIOCSDINFO: 1262 #ifdef __HAVE_OLD_DISKLABEL 1263 case ODIOCWDINFO: 1264 case ODIOCSDINFO: 1265 #endif 1266 { 1267 struct disklabel *lp; 1268 1269 if ((flag & FWRITE) == 0) 1270 return EBADF; 1271 1272 #ifdef __HAVE_OLD_DISKLABEL 1273 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1274 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1275 if (newlabel == NULL) 1276 return EIO; 1277 memset(newlabel, 0, sizeof newlabel); 1278 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1279 lp = newlabel; 1280 } else 1281 #endif 1282 lp = (struct disklabel *)addr; 1283 1284 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1285 NULL)) != 0) 1286 goto bad; 1287 wd->sc_flags |= WDF_LABELLING; 1288 1289 error = setdisklabel(wd->sc_dk.dk_label, 1290 lp, /*wd->sc_dk.dk_openmask : */0, 1291 wd->sc_dk.dk_cpulabel); 1292 if (error == 0) { 1293 if (wd->drvp->state > RESET) { 1294 s = splbio(); 1295 wd->drvp->drive_flags |= DRIVE_RESET; 1296 splx(s); 1297 } 1298 if (xfer == DIOCWDINFO 1299 #ifdef __HAVE_OLD_DISKLABEL 1300 || xfer == ODIOCWDINFO 1301 #endif 1302 ) 1303 error = writedisklabel(WDLABELDEV(dev), 1304 wdstrategy, wd->sc_dk.dk_label, 1305 wd->sc_dk.dk_cpulabel); 1306 } 1307 1308 wd->sc_flags &= ~WDF_LABELLING; 1309 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1310 bad: 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 if (newlabel != NULL) 1313 free(newlabel, M_TEMP); 1314 #endif 1315 return error; 1316 } 1317 1318 case DIOCKLABEL: 1319 if (*(int *)addr) 1320 wd->sc_flags |= WDF_KLABEL; 1321 else 1322 wd->sc_flags &= ~WDF_KLABEL; 1323 return 0; 1324 1325 case DIOCWLABEL: 1326 if ((flag & FWRITE) == 0) 1327 return EBADF; 1328 if (*(int *)addr) 1329 wd->sc_flags |= WDF_WLABEL; 1330 else 1331 wd->sc_flags &= ~WDF_WLABEL; 1332 return 0; 1333 1334 case DIOCGDEFLABEL: 1335 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1336 return 0; 1337 #ifdef __HAVE_OLD_DISKLABEL 1338 case ODIOCGDEFLABEL: 1339 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1340 if (newlabel == NULL) 1341 return EIO; 1342 wdgetdefaultlabel(wd, newlabel); 1343 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1344 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1345 else 1346 error = ENOTTY; 1347 free(newlabel, M_TEMP); 1348 return error; 1349 #endif 1350 1351 #ifdef notyet 1352 case DIOCWFORMAT: 1353 if ((flag & FWRITE) == 0) 1354 return EBADF; 1355 { 1356 register struct format_op *fop; 1357 struct iovec aiov; 1358 struct uio auio; 1359 1360 fop = (struct format_op *)addr; 1361 aiov.iov_base = fop->df_buf; 1362 aiov.iov_len = fop->df_count; 1363 auio.uio_iov = &aiov; 1364 auio.uio_iovcnt = 1; 1365 auio.uio_resid = fop->df_count; 1366 auio.uio_offset = 1367 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1368 auio.uio_vmspace = l->l_proc->p_vmspace; 1369 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1370 &auio); 1371 fop->df_count -= auio.uio_resid; 1372 fop->df_reg[0] = wdc->sc_status; 1373 fop->df_reg[1] = wdc->sc_error; 1374 return error; 1375 } 1376 #endif 1377 case DIOCGCACHE: 1378 return wd_getcache(wd, (int *)addr); 1379 1380 case DIOCSCACHE: 1381 return wd_setcache(wd, *(int *)addr); 1382 1383 case DIOCCACHESYNC: 1384 return wd_flushcache(wd, AT_WAIT); 1385 1386 case ATAIOCCOMMAND: 1387 /* 1388 * Make sure this command is (relatively) safe first 1389 */ 1390 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1391 (flag & FWRITE) == 0) 1392 return (EBADF); 1393 { 1394 struct wd_ioctl *wi; 1395 atareq_t *atareq = (atareq_t *) addr; 1396 int error1; 1397 1398 wi = wi_get(); 1399 wi->wi_softc = wd; 1400 wi->wi_atareq = *atareq; 1401 1402 if (atareq->datalen && atareq->flags & 1403 (ATACMD_READ | ATACMD_WRITE)) { 1404 wi->wi_iov.iov_base = atareq->databuf; 1405 wi->wi_iov.iov_len = atareq->datalen; 1406 wi->wi_uio.uio_iov = &wi->wi_iov; 1407 wi->wi_uio.uio_iovcnt = 1; 1408 wi->wi_uio.uio_resid = atareq->datalen; 1409 wi->wi_uio.uio_offset = 0; 1410 wi->wi_uio.uio_rw = 1411 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1412 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1413 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1414 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1415 minphys, &wi->wi_uio); 1416 } else { 1417 /* No need to call physio if we don't have any 1418 user data */ 1419 wi->wi_bp.b_flags = 0; 1420 wi->wi_bp.b_data = 0; 1421 wi->wi_bp.b_bcount = 0; 1422 wi->wi_bp.b_dev = 0; 1423 wi->wi_bp.b_proc = l->l_proc; 1424 wdioctlstrategy(&wi->wi_bp); 1425 error1 = wi->wi_bp.b_error; 1426 } 1427 *atareq = wi->wi_atareq; 1428 wi_free(wi); 1429 return(error1); 1430 } 1431 1432 case DIOCAWEDGE: 1433 { 1434 struct dkwedge_info *dkw = (void *) addr; 1435 1436 if ((flag & FWRITE) == 0) 1437 return (EBADF); 1438 1439 /* If the ioctl happens here, the parent is us. */ 1440 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1441 return (dkwedge_add(dkw)); 1442 } 1443 1444 case DIOCDWEDGE: 1445 { 1446 struct dkwedge_info *dkw = (void *) addr; 1447 1448 if ((flag & FWRITE) == 0) 1449 return (EBADF); 1450 1451 /* If the ioctl happens here, the parent is us. */ 1452 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1453 return (dkwedge_del(dkw)); 1454 } 1455 1456 case DIOCLWEDGES: 1457 { 1458 struct dkwedge_list *dkwl = (void *) addr; 1459 1460 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1461 } 1462 1463 case DIOCGSTRATEGY: 1464 { 1465 struct disk_strategy *dks = (void *)addr; 1466 1467 s = splbio(); 1468 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1469 sizeof(dks->dks_name)); 1470 splx(s); 1471 dks->dks_paramlen = 0; 1472 1473 return 0; 1474 } 1475 1476 case DIOCSSTRATEGY: 1477 { 1478 struct disk_strategy *dks = (void *)addr; 1479 struct bufq_state *new; 1480 struct bufq_state *old; 1481 1482 if ((flag & FWRITE) == 0) { 1483 return EBADF; 1484 } 1485 if (dks->dks_param != NULL) { 1486 return EINVAL; 1487 } 1488 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1489 error = bufq_alloc(&new, dks->dks_name, 1490 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1491 if (error) { 1492 return error; 1493 } 1494 s = splbio(); 1495 old = wd->sc_q; 1496 bufq_move(new, old); 1497 wd->sc_q = new; 1498 splx(s); 1499 bufq_free(old); 1500 1501 return 0; 1502 } 1503 1504 default: 1505 return ENOTTY; 1506 } 1507 1508 #ifdef DIAGNOSTIC 1509 panic("wdioctl: impossible"); 1510 #endif 1511 } 1512 1513 #ifdef B_FORMAT 1514 int 1515 wdformat(struct buf *bp) 1516 { 1517 1518 bp->b_flags |= B_FORMAT; 1519 return wdstrategy(bp); 1520 } 1521 #endif 1522 1523 int 1524 wdsize(dev_t dev) 1525 { 1526 struct wd_softc *wd; 1527 int part, omask; 1528 int size; 1529 1530 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1531 1532 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1533 if (wd == NULL) 1534 return (-1); 1535 1536 part = WDPART(dev); 1537 omask = wd->sc_dk.dk_openmask & (1 << part); 1538 1539 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1540 return (-1); 1541 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1542 size = -1; 1543 else 1544 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1545 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1546 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1547 return (-1); 1548 return (size); 1549 } 1550 1551 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1552 static int wddoingadump = 0; 1553 static int wddumprecalibrated = 0; 1554 1555 /* 1556 * Dump core after a system crash. 1557 */ 1558 int 1559 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1560 { 1561 struct wd_softc *wd; /* disk unit to do the I/O */ 1562 struct disklabel *lp; /* disk's disklabel */ 1563 int part, err; 1564 int nblks; /* total number of sectors left to write */ 1565 1566 /* Check if recursive dump; if so, punt. */ 1567 if (wddoingadump) 1568 return EFAULT; 1569 wddoingadump = 1; 1570 1571 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1572 if (wd == NULL) 1573 return (ENXIO); 1574 1575 part = WDPART(dev); 1576 1577 /* Convert to disk sectors. Request must be a multiple of size. */ 1578 lp = wd->sc_dk.dk_label; 1579 if ((size % lp->d_secsize) != 0) 1580 return EFAULT; 1581 nblks = size / lp->d_secsize; 1582 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1583 1584 /* Check transfer bounds against partition size. */ 1585 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1586 return EINVAL; 1587 1588 /* Offset block number to start of partition. */ 1589 blkno += lp->d_partitions[part].p_offset; 1590 1591 /* Recalibrate, if first dump transfer. */ 1592 if (wddumprecalibrated == 0) { 1593 wddumprecalibrated = 1; 1594 (*wd->atabus->ata_reset_drive)(wd->drvp, 1595 AT_POLL | AT_RST_EMERG); 1596 wd->drvp->state = RESET; 1597 } 1598 1599 wd->sc_bp = NULL; 1600 wd->sc_wdc_bio.blkno = blkno; 1601 wd->sc_wdc_bio.flags = ATA_POLL; 1602 if (wd->sc_flags & WDF_LBA48 && 1603 (blkno > LBA48_THRESHOLD || 1604 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1605 wd->sc_wdc_bio.flags |= ATA_LBA48; 1606 if (wd->sc_flags & WDF_LBA) 1607 wd->sc_wdc_bio.flags |= ATA_LBA; 1608 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1609 wd->sc_wdc_bio.databuf = va; 1610 #ifndef WD_DUMP_NOT_TRUSTED 1611 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1612 case ATACMD_TRY_AGAIN: 1613 panic("wddump: try again"); 1614 break; 1615 case ATACMD_QUEUED: 1616 panic("wddump: polled command has been queued"); 1617 break; 1618 case ATACMD_COMPLETE: 1619 break; 1620 } 1621 switch(wd->sc_wdc_bio.error) { 1622 case TIMEOUT: 1623 printf("wddump: device timed out"); 1624 err = EIO; 1625 break; 1626 case ERR_DF: 1627 printf("wddump: drive fault"); 1628 err = EIO; 1629 break; 1630 case ERR_DMA: 1631 printf("wddump: DMA error"); 1632 err = EIO; 1633 break; 1634 case ERROR: 1635 printf("wddump: "); 1636 wdperror(wd); 1637 err = EIO; 1638 break; 1639 case NOERROR: 1640 err = 0; 1641 break; 1642 default: 1643 panic("wddump: unknown error type"); 1644 } 1645 if (err != 0) { 1646 printf("\n"); 1647 return err; 1648 } 1649 #else /* WD_DUMP_NOT_TRUSTED */ 1650 /* Let's just talk about this first... */ 1651 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1652 unit, va, cylin, head, sector); 1653 delay(500 * 1000); /* half a second */ 1654 #endif 1655 1656 wddoingadump = 0; 1657 return 0; 1658 } 1659 1660 #ifdef HAS_BAD144_HANDLING 1661 /* 1662 * Internalize the bad sector table. 1663 */ 1664 void 1665 bad144intern(struct wd_softc *wd) 1666 { 1667 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1668 struct disklabel *lp = wd->sc_dk.dk_label; 1669 int i = 0; 1670 1671 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1672 1673 for (; i < NBT_BAD; i++) { 1674 if (bt->bt_bad[i].bt_cyl == 0xffff) 1675 break; 1676 wd->sc_badsect[i] = 1677 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1678 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1679 (bt->bt_bad[i].bt_trksec & 0xff); 1680 } 1681 for (; i < NBT_BAD+1; i++) 1682 wd->sc_badsect[i] = -1; 1683 } 1684 #endif 1685 1686 static void 1687 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1688 { 1689 prop_dictionary_t disk_info, odisk_info, geom; 1690 const char *cp; 1691 1692 disk_info = prop_dictionary_create(); 1693 1694 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1695 cp = "ST506"; 1696 else { 1697 /* XXX Should have a case for ATA here, too. */ 1698 cp = "ESDI"; 1699 } 1700 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1701 1702 geom = prop_dictionary_create(); 1703 1704 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1705 1706 prop_dictionary_set_uint32(geom, "sector-size", 1707 DEV_BSIZE /* XXX 512? */); 1708 1709 prop_dictionary_set_uint16(geom, "sectors-per-track", 1710 wd->sc_params.atap_sectors); 1711 1712 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1713 wd->sc_params.atap_heads); 1714 1715 if (wd->sc_flags & WDF_LBA) 1716 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1717 wd->sc_capacity / 1718 (wd->sc_params.atap_heads * 1719 wd->sc_params.atap_sectors)); 1720 else 1721 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1722 wd->sc_params.atap_cylinders); 1723 1724 prop_dictionary_set(disk_info, "geometry", geom); 1725 prop_object_release(geom); 1726 1727 prop_dictionary_set(device_properties(&wd->sc_dev), 1728 "disk-info", disk_info); 1729 1730 /* 1731 * Don't release disk_info here; we keep a reference to it. 1732 * disk_detach() will release it when we go away. 1733 */ 1734 1735 odisk_info = wd->sc_dk.dk_info; 1736 wd->sc_dk.dk_info = disk_info; 1737 if (odisk_info) 1738 prop_object_release(odisk_info); 1739 } 1740 1741 int 1742 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1743 { 1744 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1745 case CMD_AGAIN: 1746 return 1; 1747 case CMD_ERR: 1748 /* 1749 * We `know' there's a drive here; just assume it's old. 1750 * This geometry is only used to read the MBR and print a 1751 * (false) attach message. 1752 */ 1753 strncpy(params->atap_model, "ST506", 1754 sizeof params->atap_model); 1755 params->atap_config = ATA_CFG_FIXED; 1756 params->atap_cylinders = 1024; 1757 params->atap_heads = 8; 1758 params->atap_sectors = 17; 1759 params->atap_multi = 1; 1760 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1761 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1762 /* FALLTHROUGH */ 1763 case CMD_OK: 1764 wd_params_to_properties(wd, params); 1765 return 0; 1766 default: 1767 panic("wd_get_params: bad return code from ata_get_params"); 1768 /* NOTREACHED */ 1769 } 1770 } 1771 1772 int 1773 wd_getcache(struct wd_softc *wd, int *bitsp) 1774 { 1775 struct ataparams params; 1776 1777 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1778 return EIO; 1779 if (params.atap_cmd_set1 == 0x0000 || 1780 params.atap_cmd_set1 == 0xffff || 1781 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1782 *bitsp = 0; 1783 return 0; 1784 } 1785 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1786 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1787 *bitsp |= DKCACHE_WRITE; 1788 1789 return 0; 1790 } 1791 1792 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1793 1794 int 1795 wd_setcache(struct wd_softc *wd, int bits) 1796 { 1797 struct ataparams params; 1798 struct ata_command ata_c; 1799 1800 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1801 return EIO; 1802 1803 if (params.atap_cmd_set1 == 0x0000 || 1804 params.atap_cmd_set1 == 0xffff || 1805 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1806 return EOPNOTSUPP; 1807 1808 if ((bits & DKCACHE_READ) == 0 || 1809 (bits & DKCACHE_SAVE) != 0) 1810 return EOPNOTSUPP; 1811 1812 memset(&ata_c, 0, sizeof(struct ata_command)); 1813 ata_c.r_command = SET_FEATURES; 1814 ata_c.r_st_bmask = 0; 1815 ata_c.r_st_pmask = 0; 1816 ata_c.timeout = 30000; /* 30s timeout */ 1817 ata_c.flags = AT_WAIT; 1818 if (bits & DKCACHE_WRITE) 1819 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1820 else 1821 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1822 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1823 printf("%s: wd_setcache command not complete\n", 1824 wd->sc_dev.dv_xname); 1825 return EIO; 1826 } 1827 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1828 char sbuf[sizeof(at_errbits) + 64]; 1829 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1830 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1831 sbuf); 1832 return EIO; 1833 } 1834 return 0; 1835 } 1836 1837 int 1838 wd_standby(struct wd_softc *wd, int flags) 1839 { 1840 struct ata_command ata_c; 1841 1842 memset(&ata_c, 0, sizeof(struct ata_command)); 1843 ata_c.r_command = WDCC_STANDBY_IMMED; 1844 ata_c.r_st_bmask = WDCS_DRDY; 1845 ata_c.r_st_pmask = WDCS_DRDY; 1846 ata_c.flags = flags; 1847 ata_c.timeout = 30000; /* 30s timeout */ 1848 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1849 printf("%s: standby immediate command didn't complete\n", 1850 wd->sc_dev.dv_xname); 1851 return EIO; 1852 } 1853 if (ata_c.flags & AT_ERROR) { 1854 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1855 return ENODEV; 1856 } 1857 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1858 char sbuf[sizeof(at_errbits) + 64]; 1859 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1860 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1861 sbuf); 1862 return EIO; 1863 } 1864 return 0; 1865 } 1866 1867 int 1868 wd_flushcache(struct wd_softc *wd, int flags) 1869 { 1870 struct ata_command ata_c; 1871 1872 /* 1873 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1874 * only ATA-2 and still support it. 1875 */ 1876 if (wd->drvp->ata_vers < 4 && 1877 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1878 wd->sc_params.atap_cmd_set2 == 0xffff)) 1879 return ENODEV; 1880 memset(&ata_c, 0, sizeof(struct ata_command)); 1881 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1882 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1883 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1884 else 1885 ata_c.r_command = WDCC_FLUSHCACHE; 1886 ata_c.r_st_bmask = WDCS_DRDY; 1887 ata_c.r_st_pmask = WDCS_DRDY; 1888 ata_c.flags = flags; 1889 ata_c.timeout = 30000; /* 30s timeout */ 1890 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1891 printf("%s: flush cache command didn't complete\n", 1892 wd->sc_dev.dv_xname); 1893 return EIO; 1894 } 1895 if (ata_c.flags & AT_ERROR) { 1896 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1897 return ENODEV; 1898 } 1899 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1900 char sbuf[sizeof(at_errbits) + 64]; 1901 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1902 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1903 sbuf); 1904 return EIO; 1905 } 1906 return 0; 1907 } 1908 1909 void 1910 wd_shutdown(void *arg) 1911 { 1912 struct wd_softc *wd = arg; 1913 wd_flushcache(wd, AT_POLL); 1914 } 1915 1916 /* 1917 * Allocate space for a ioctl queue structure. Mostly taken from 1918 * scsipi_ioctl.c 1919 */ 1920 struct wd_ioctl * 1921 wi_get(void) 1922 { 1923 struct wd_ioctl *wi; 1924 int s; 1925 1926 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1927 simple_lock_init(&wi->wi_bp.b_interlock); 1928 s = splbio(); 1929 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1930 splx(s); 1931 return (wi); 1932 } 1933 1934 /* 1935 * Free an ioctl structure and remove it from our list 1936 */ 1937 1938 void 1939 wi_free(struct wd_ioctl *wi) 1940 { 1941 int s; 1942 1943 s = splbio(); 1944 LIST_REMOVE(wi, wi_list); 1945 splx(s); 1946 free(wi, M_TEMP); 1947 } 1948 1949 /* 1950 * Find a wd_ioctl structure based on the struct buf. 1951 */ 1952 1953 struct wd_ioctl * 1954 wi_find(struct buf *bp) 1955 { 1956 struct wd_ioctl *wi; 1957 int s; 1958 1959 s = splbio(); 1960 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1961 if (bp == &wi->wi_bp) 1962 break; 1963 splx(s); 1964 return (wi); 1965 } 1966 1967 /* 1968 * Ioctl pseudo strategy routine 1969 * 1970 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1971 * happens here is: 1972 * 1973 * - wdioctl() queues a wd_ioctl structure. 1974 * 1975 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1976 * user space I/O is required. If physio() is called, physio() eventually 1977 * calls wdioctlstrategy(). 1978 * 1979 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1980 * to perform the actual command 1981 * 1982 * The reason for the use of the pseudo strategy routine is because 1983 * when doing I/O to/from user space, physio _really_ wants to be in 1984 * the loop. We could put the entire buffer into the ioctl request 1985 * structure, but that won't scale if we want to do things like download 1986 * microcode. 1987 */ 1988 1989 void 1990 wdioctlstrategy(struct buf *bp) 1991 { 1992 struct wd_ioctl *wi; 1993 struct ata_command ata_c; 1994 int error = 0; 1995 1996 wi = wi_find(bp); 1997 if (wi == NULL) { 1998 printf("wdioctlstrategy: " 1999 "No matching ioctl request found in queue\n"); 2000 error = EINVAL; 2001 goto bad; 2002 } 2003 2004 memset(&ata_c, 0, sizeof(ata_c)); 2005 2006 /* 2007 * Abort if physio broke up the transfer 2008 */ 2009 2010 if (bp->b_bcount != wi->wi_atareq.datalen) { 2011 printf("physio split wd ioctl request... cannot proceed\n"); 2012 error = EIO; 2013 goto bad; 2014 } 2015 2016 /* 2017 * Abort if we didn't get a buffer size that was a multiple of 2018 * our sector size (or was larger than NBBY) 2019 */ 2020 2021 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2022 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2023 (1 << NBBY)) { 2024 error = EINVAL; 2025 goto bad; 2026 } 2027 2028 /* 2029 * Make sure a timeout was supplied in the ioctl request 2030 */ 2031 2032 if (wi->wi_atareq.timeout == 0) { 2033 error = EINVAL; 2034 goto bad; 2035 } 2036 2037 if (wi->wi_atareq.flags & ATACMD_READ) 2038 ata_c.flags |= AT_READ; 2039 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2040 ata_c.flags |= AT_WRITE; 2041 2042 if (wi->wi_atareq.flags & ATACMD_READREG) 2043 ata_c.flags |= AT_READREG; 2044 2045 ata_c.flags |= AT_WAIT; 2046 2047 ata_c.timeout = wi->wi_atareq.timeout; 2048 ata_c.r_command = wi->wi_atareq.command; 2049 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2050 ata_c.r_cyl = wi->wi_atareq.cylinder; 2051 ata_c.r_sector = wi->wi_atareq.sec_num; 2052 ata_c.r_count = wi->wi_atareq.sec_count; 2053 ata_c.r_features = wi->wi_atareq.features; 2054 ata_c.r_st_bmask = WDCS_DRDY; 2055 ata_c.r_st_pmask = WDCS_DRDY; 2056 ata_c.data = wi->wi_bp.b_data; 2057 ata_c.bcount = wi->wi_bp.b_bcount; 2058 2059 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2060 != ATACMD_COMPLETE) { 2061 wi->wi_atareq.retsts = ATACMD_ERROR; 2062 goto bad; 2063 } 2064 2065 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2066 if (ata_c.flags & AT_ERROR) { 2067 wi->wi_atareq.retsts = ATACMD_ERROR; 2068 wi->wi_atareq.error = ata_c.r_error; 2069 } else if (ata_c.flags & AT_DF) 2070 wi->wi_atareq.retsts = ATACMD_DF; 2071 else 2072 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2073 } else { 2074 wi->wi_atareq.retsts = ATACMD_OK; 2075 if (wi->wi_atareq.flags & ATACMD_READREG) { 2076 wi->wi_atareq.head = ata_c.r_head ; 2077 wi->wi_atareq.cylinder = ata_c.r_cyl; 2078 wi->wi_atareq.sec_num = ata_c.r_sector; 2079 wi->wi_atareq.sec_count = ata_c.r_count; 2080 wi->wi_atareq.features = ata_c.r_features; 2081 wi->wi_atareq.error = ata_c.r_error; 2082 } 2083 } 2084 2085 bp->b_error = 0; 2086 biodone(bp); 2087 return; 2088 bad: 2089 bp->b_flags |= B_ERROR; 2090 bp->b_error = error; 2091 biodone(bp); 2092 } 2093
Indexes created Mon Sep 29 18:09:42 GMT 2025