wd.c revision 1.344
1 /* $NetBSD: wd.c,v 1.344 2007/09/05 05:36:19 jnemeth 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 1.344 2007/09/05 05:36:19 jnemeth 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, 0); 305 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 306 #ifdef WD_SOFTBADSECT 307 SLIST_INIT(&wd->sc_bslist); 308 #endif 309 wd->atabus = adev->adev_bustype; 310 wd->openings = adev->adev_openings; 311 wd->drvp = adev->adev_drv_data; 312 313 wd->drvp->drv_done = wddone; 314 wd->drvp->drv_softc = &wd->sc_dev; 315 316 aprint_naive("\n"); 317 318 /* read our drive info */ 319 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 320 aprint_error("\n%s: IDENTIFY failed\n", 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; 516 517 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 518 DEBUG_XFERS); 519 520 /* Valid request? */ 521 if (bp->b_blkno < 0 || 522 (bp->b_bcount % lp->d_secsize) != 0 || 523 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 524 bp->b_error = EINVAL; 525 goto done; 526 } 527 528 /* If device invalidated (e.g. media change, door open), error. */ 529 if ((wd->sc_flags & WDF_LOADED) == 0) { 530 bp->b_error = EIO; 531 goto done; 532 } 533 534 /* If it's a null transfer, return immediately. */ 535 if (bp->b_bcount == 0) 536 goto done; 537 538 /* 539 * Do bounds checking, adjust transfer. if error, process. 540 * If end of partition, just return. 541 */ 542 if (WDPART(bp->b_dev) == RAW_PART) { 543 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 544 wd->sc_capacity) <= 0) 545 goto done; 546 } else { 547 if (bounds_check_with_label(&wd->sc_dk, bp, 548 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 549 goto done; 550 } 551 552 /* 553 * Now convert the block number to absolute and put it in 554 * terms of the device's logical block size. 555 */ 556 if (lp->d_secsize >= DEV_BSIZE) 557 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 558 else 559 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 560 561 if (WDPART(bp->b_dev) != RAW_PART) 562 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 563 564 bp->b_rawblkno = blkno; 565 566 #ifdef WD_SOFTBADSECT 567 /* 568 * If the transfer about to be attempted contains only a block that 569 * is known to be bad then return an error for the transfer without 570 * even attempting to start a transfer up under the premis that we 571 * will just end up doing more retries for a transfer that will end 572 * up failing again. 573 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 574 */ 575 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 576 struct disk_badsectors *dbs; 577 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 578 579 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 580 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 581 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 582 bp->b_error = EIO; 583 goto done; 584 } 585 } 586 #endif 587 588 /* Queue transfer on drive, activate drive and controller if idle. */ 589 s = splbio(); 590 BUFQ_PUT(wd->sc_q, bp); 591 wdstart(wd); 592 splx(s); 593 return; 594 done: 595 /* Toss transfer; we're done early. */ 596 bp->b_resid = bp->b_bcount; 597 biodone(bp); 598 } 599 600 /* 601 * Queue a drive for I/O. 602 */ 603 void 604 wdstart(void *arg) 605 { 606 struct wd_softc *wd = arg; 607 struct buf *bp = NULL; 608 609 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 610 DEBUG_XFERS); 611 while (wd->openings > 0) { 612 613 /* Is there a buf for us ? */ 614 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 615 return; 616 617 /* 618 * Make the command. First lock the device 619 */ 620 wd->openings--; 621 622 wd->retries = 0; 623 __wdstart(wd, bp); 624 } 625 } 626 627 static void 628 wd_split_mod15_write(struct buf *bp) 629 { 630 struct buf *obp = bp->b_private; 631 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 632 633 if (__predict_false(bp->b_error != 0)) { 634 /* 635 * Propagate the error. If this was the first half of 636 * the original transfer, make sure to account for that 637 * in the residual. 638 */ 639 if (bp->b_data == obp->b_data) 640 bp->b_resid += bp->b_bcount; 641 goto done; 642 } 643 644 /* 645 * If this was the second half of the transfer, we're all done! 646 */ 647 if (bp->b_data != obp->b_data) 648 goto done; 649 650 /* 651 * Advance the pointer to the second half and issue that command 652 * using the same opening. 653 */ 654 bp->b_flags = obp->b_flags | B_CALL; 655 bp->b_data = (char *)bp->b_data + bp->b_bcount; 656 bp->b_blkno += (bp->b_bcount / 512); 657 bp->b_rawblkno += (bp->b_bcount / 512); 658 __wdstart(sc, bp); 659 return; 660 661 done: 662 obp->b_error = bp->b_error; 663 obp->b_resid = bp->b_resid; 664 putiobuf(bp); 665 biodone(obp); 666 sc->openings++; 667 /* wddone() will call wdstart() */ 668 } 669 670 void 671 __wdstart(struct wd_softc *wd, struct buf *bp) 672 { 673 674 /* 675 * Deal with the "split mod15 write" quirk. We just divide the 676 * transfer in two, doing the first half and then then second half 677 * with the same command opening. 678 * 679 * Note we MUST do this here, because we can't let insertion 680 * into the bufq cause the transfers to be re-merged. 681 */ 682 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 683 (bp->b_flags & B_READ) == 0 && 684 bp->b_bcount > 512 && 685 ((bp->b_bcount / 512) % 15) == 1)) { 686 struct buf *nbp; 687 688 /* already at splbio */ 689 nbp = getiobuf_nowait(); 690 if (__predict_false(nbp == NULL)) { 691 /* No memory -- fail the iop. */ 692 bp->b_error = ENOMEM; 693 bp->b_resid = bp->b_bcount; 694 biodone(bp); 695 wd->openings++; 696 return; 697 } 698 699 nbp->b_error = 0; 700 nbp->b_proc = bp->b_proc; 701 nbp->b_vp = NULLVP; 702 nbp->b_dev = bp->b_dev; 703 704 nbp->b_bcount = bp->b_bcount / 2; 705 nbp->b_bufsize = bp->b_bcount / 2; 706 nbp->b_data = bp->b_data; 707 708 nbp->b_blkno = bp->b_blkno; 709 nbp->b_rawblkno = bp->b_rawblkno; 710 711 nbp->b_flags = bp->b_flags | B_CALL; 712 nbp->b_iodone = wd_split_mod15_write; 713 714 /* Put ptr to orig buf in b_private and use new buf */ 715 nbp->b_private = bp; 716 717 BIO_COPYPRIO(nbp, bp); 718 719 bp = nbp; 720 } 721 722 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 723 wd->sc_wdc_bio.blkdone =0; 724 wd->sc_bp = bp; 725 /* 726 * If we're retrying, retry in single-sector mode. This will give us 727 * the sector number of the problem, and will eventually allow the 728 * transfer to succeed. 729 */ 730 if (wd->retries >= WDIORETRIES_SINGLE) 731 wd->sc_wdc_bio.flags = ATA_SINGLE; 732 else 733 wd->sc_wdc_bio.flags = 0; 734 if (wd->sc_flags & WDF_LBA48 && 735 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 736 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 737 wd->sc_wdc_bio.flags |= ATA_LBA48; 738 if (wd->sc_flags & WDF_LBA) 739 wd->sc_wdc_bio.flags |= ATA_LBA; 740 if (bp->b_flags & B_READ) 741 wd->sc_wdc_bio.flags |= ATA_READ; 742 wd->sc_wdc_bio.bcount = bp->b_bcount; 743 wd->sc_wdc_bio.databuf = bp->b_data; 744 /* Instrumentation. */ 745 disk_busy(&wd->sc_dk); 746 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 747 case ATACMD_TRY_AGAIN: 748 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 749 break; 750 case ATACMD_QUEUED: 751 case ATACMD_COMPLETE: 752 break; 753 default: 754 panic("__wdstart: bad return code from ata_bio()"); 755 } 756 } 757 758 void 759 wddone(void *v) 760 { 761 struct wd_softc *wd = v; 762 struct buf *bp = wd->sc_bp; 763 const char *errmsg; 764 int do_perror = 0; 765 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 766 DEBUG_XFERS); 767 768 if (bp == NULL) 769 return; 770 bp->b_resid = wd->sc_wdc_bio.bcount; 771 switch (wd->sc_wdc_bio.error) { 772 case ERR_DMA: 773 errmsg = "DMA error"; 774 goto retry; 775 case ERR_DF: 776 errmsg = "device fault"; 777 goto retry; 778 case TIMEOUT: 779 errmsg = "device timeout"; 780 goto retry; 781 case ERR_RESET: 782 errmsg = "channel reset"; 783 goto retry2; 784 case ERROR: 785 /* Don't care about media change bits */ 786 if (wd->sc_wdc_bio.r_error != 0 && 787 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 788 goto noerror; 789 errmsg = "error"; 790 do_perror = 1; 791 retry: /* Just reset and retry. Can we do more ? */ 792 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 793 retry2: 794 diskerr(bp, "wd", errmsg, LOG_PRINTF, 795 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 796 if (wd->retries < WDIORETRIES) 797 printf(", retrying\n"); 798 if (do_perror) 799 wdperror(wd); 800 if (wd->retries < WDIORETRIES) { 801 wd->retries++; 802 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 803 wdrestart, wd); 804 return; 805 } 806 printf("\n"); 807 808 #ifdef WD_SOFTBADSECT 809 /* 810 * Not all errors indicate a failed block but those that do, 811 * put the block on the bad-block list for the device. Only 812 * do this for reads because the drive should do it for writes, 813 * itself, according to Manuel. 814 */ 815 if ((bp->b_flags & B_READ) && 816 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 817 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 818 struct disk_badsectors *dbs; 819 820 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 821 dbs->dbs_min = bp->b_rawblkno; 822 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 823 microtime(&dbs->dbs_failedat); 824 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 825 wd->sc_bscount++; 826 } 827 #endif 828 bp->b_error = EIO; 829 break; 830 case NOERROR: 831 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 832 printf("%s: soft error (corrected)\n", 833 wd->sc_dev.dv_xname); 834 break; 835 case ERR_NODEV: 836 bp->b_error = EIO; 837 break; 838 } 839 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 840 (bp->b_flags & B_READ)); 841 #if NRND > 0 842 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 843 #endif 844 /* XXX Yuck, but we don't want to increment openings in this case */ 845 if (__predict_false((bp->b_flags & B_CALL) != 0 && 846 bp->b_iodone == wd_split_mod15_write)) 847 biodone(bp); 848 else { 849 biodone(bp); 850 wd->openings++; 851 } 852 wdstart(wd); 853 } 854 855 void 856 wdrestart(void *v) 857 { 858 struct wd_softc *wd = v; 859 struct buf *bp = wd->sc_bp; 860 int s; 861 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 862 DEBUG_XFERS); 863 864 s = splbio(); 865 __wdstart(v, bp); 866 splx(s); 867 } 868 869 int 870 wdread(dev_t dev, struct uio *uio, int flags) 871 { 872 873 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 874 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 875 } 876 877 int 878 wdwrite(dev_t dev, struct uio *uio, int flags) 879 { 880 881 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 882 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 883 } 884 885 int 886 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 887 { 888 struct wd_softc *wd; 889 int part, error; 890 891 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 892 wd = device_lookup(&wd_cd, WDUNIT(dev)); 893 if (wd == NULL) 894 return (ENXIO); 895 896 if (! device_is_active(&wd->sc_dev)) 897 return (ENODEV); 898 899 part = WDPART(dev); 900 901 mutex_enter(&wd->sc_dk.dk_openlock); 902 903 /* 904 * If there are wedges, and this is not RAW_PART, then we 905 * need to fail. 906 */ 907 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 908 error = EBUSY; 909 goto bad1; 910 } 911 912 /* 913 * If this is the first open of this device, add a reference 914 * to the adapter. 915 */ 916 if (wd->sc_dk.dk_openmask == 0 && 917 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 918 goto bad1; 919 920 if (wd->sc_dk.dk_openmask != 0) { 921 /* 922 * If any partition is open, but the disk has been invalidated, 923 * disallow further opens. 924 */ 925 if ((wd->sc_flags & WDF_LOADED) == 0) { 926 error = EIO; 927 goto bad2; 928 } 929 } else { 930 if ((wd->sc_flags & WDF_LOADED) == 0) { 931 wd->sc_flags |= WDF_LOADED; 932 933 /* Load the physical device parameters. */ 934 wd_get_params(wd, AT_WAIT, &wd->sc_params); 935 936 /* Load the partition info if not already loaded. */ 937 wdgetdisklabel(wd); 938 } 939 } 940 941 /* Check that the partition exists. */ 942 if (part != RAW_PART && 943 (part >= wd->sc_dk.dk_label->d_npartitions || 944 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 945 error = ENXIO; 946 goto bad2; 947 } 948 949 /* Insure only one open at a time. */ 950 switch (fmt) { 951 case S_IFCHR: 952 wd->sc_dk.dk_copenmask |= (1 << part); 953 break; 954 case S_IFBLK: 955 wd->sc_dk.dk_bopenmask |= (1 << part); 956 break; 957 } 958 wd->sc_dk.dk_openmask = 959 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 960 961 mutex_exit(&wd->sc_dk.dk_openlock); 962 return 0; 963 964 bad2: 965 if (wd->sc_dk.dk_openmask == 0) 966 wd->atabus->ata_delref(wd->drvp); 967 bad1: 968 mutex_exit(&wd->sc_dk.dk_openlock); 969 return error; 970 } 971 972 int 973 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 974 { 975 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 976 int part = WDPART(dev); 977 978 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 979 980 mutex_enter(&wd->sc_dk.dk_openlock); 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 mutex_exit(&wd->sc_dk.dk_openlock); 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 uint8_t *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 = (uint8_t *)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 mutex_enter(&wd->sc_dk.dk_openlock); 1274 wd->sc_flags |= WDF_LABELLING; 1275 1276 error = setdisklabel(wd->sc_dk.dk_label, 1277 lp, /*wd->sc_dk.dk_openmask : */0, 1278 wd->sc_dk.dk_cpulabel); 1279 if (error == 0) { 1280 if (wd->drvp->state > RESET) { 1281 s = splbio(); 1282 wd->drvp->drive_flags |= DRIVE_RESET; 1283 splx(s); 1284 } 1285 if (xfer == DIOCWDINFO 1286 #ifdef __HAVE_OLD_DISKLABEL 1287 || xfer == ODIOCWDINFO 1288 #endif 1289 ) 1290 error = writedisklabel(WDLABELDEV(dev), 1291 wdstrategy, wd->sc_dk.dk_label, 1292 wd->sc_dk.dk_cpulabel); 1293 } 1294 1295 wd->sc_flags &= ~WDF_LABELLING; 1296 mutex_exit(&wd->sc_dk.dk_openlock); 1297 #ifdef __HAVE_OLD_DISKLABEL 1298 if (newlabel != NULL) 1299 free(newlabel, M_TEMP); 1300 #endif 1301 return error; 1302 } 1303 1304 case DIOCKLABEL: 1305 if (*(int *)addr) 1306 wd->sc_flags |= WDF_KLABEL; 1307 else 1308 wd->sc_flags &= ~WDF_KLABEL; 1309 return 0; 1310 1311 case DIOCWLABEL: 1312 if ((flag & FWRITE) == 0) 1313 return EBADF; 1314 if (*(int *)addr) 1315 wd->sc_flags |= WDF_WLABEL; 1316 else 1317 wd->sc_flags &= ~WDF_WLABEL; 1318 return 0; 1319 1320 case DIOCGDEFLABEL: 1321 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1322 return 0; 1323 #ifdef __HAVE_OLD_DISKLABEL 1324 case ODIOCGDEFLABEL: 1325 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1326 if (newlabel == NULL) 1327 return EIO; 1328 wdgetdefaultlabel(wd, newlabel); 1329 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1330 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1331 else 1332 error = ENOTTY; 1333 free(newlabel, M_TEMP); 1334 return error; 1335 #endif 1336 1337 #ifdef notyet 1338 case DIOCWFORMAT: 1339 if ((flag & FWRITE) == 0) 1340 return EBADF; 1341 { 1342 register struct format_op *fop; 1343 struct iovec aiov; 1344 struct uio auio; 1345 1346 fop = (struct format_op *)addr; 1347 aiov.iov_base = fop->df_buf; 1348 aiov.iov_len = fop->df_count; 1349 auio.uio_iov = &aiov; 1350 auio.uio_iovcnt = 1; 1351 auio.uio_resid = fop->df_count; 1352 auio.uio_offset = 1353 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1354 auio.uio_vmspace = l->l_proc->p_vmspace; 1355 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1356 &auio); 1357 fop->df_count -= auio.uio_resid; 1358 fop->df_reg[0] = wdc->sc_status; 1359 fop->df_reg[1] = wdc->sc_error; 1360 return error; 1361 } 1362 #endif 1363 case DIOCGCACHE: 1364 return wd_getcache(wd, (int *)addr); 1365 1366 case DIOCSCACHE: 1367 return wd_setcache(wd, *(int *)addr); 1368 1369 case DIOCCACHESYNC: 1370 return wd_flushcache(wd, AT_WAIT); 1371 1372 case ATAIOCCOMMAND: 1373 /* 1374 * Make sure this command is (relatively) safe first 1375 */ 1376 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1377 (flag & FWRITE) == 0) 1378 return (EBADF); 1379 { 1380 struct wd_ioctl *wi; 1381 atareq_t *atareq = (atareq_t *) addr; 1382 int error1; 1383 1384 wi = wi_get(); 1385 wi->wi_softc = wd; 1386 wi->wi_atareq = *atareq; 1387 1388 if (atareq->datalen && atareq->flags & 1389 (ATACMD_READ | ATACMD_WRITE)) { 1390 void *tbuf; 1391 if (atareq->datalen < DEV_BSIZE 1392 && atareq->command == WDCC_IDENTIFY) { 1393 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1394 wi->wi_iov.iov_base = tbuf; 1395 wi->wi_iov.iov_len = DEV_BSIZE; 1396 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1397 } else { 1398 tbuf = NULL; 1399 wi->wi_iov.iov_base = atareq->databuf; 1400 wi->wi_iov.iov_len = atareq->datalen; 1401 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1402 } 1403 wi->wi_uio.uio_iov = &wi->wi_iov; 1404 wi->wi_uio.uio_iovcnt = 1; 1405 wi->wi_uio.uio_resid = atareq->datalen; 1406 wi->wi_uio.uio_offset = 0; 1407 wi->wi_uio.uio_rw = 1408 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1409 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1410 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1411 minphys, &wi->wi_uio); 1412 if (tbuf != NULL && error1 == 0) { 1413 error1 = copyout(tbuf, atareq->databuf, 1414 atareq->datalen); 1415 free(tbuf, M_TEMP); 1416 } 1417 } else { 1418 /* No need to call physio if we don't have any 1419 user data */ 1420 wi->wi_bp.b_flags = 0; 1421 wi->wi_bp.b_data = 0; 1422 wi->wi_bp.b_bcount = 0; 1423 wi->wi_bp.b_dev = 0; 1424 wi->wi_bp.b_proc = l->l_proc; 1425 wdioctlstrategy(&wi->wi_bp); 1426 error1 = wi->wi_bp.b_error; 1427 } 1428 *atareq = wi->wi_atareq; 1429 wi_free(wi); 1430 return(error1); 1431 } 1432 1433 case DIOCAWEDGE: 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_add(dkw)); 1443 } 1444 1445 case DIOCDWEDGE: 1446 { 1447 struct dkwedge_info *dkw = (void *) addr; 1448 1449 if ((flag & FWRITE) == 0) 1450 return (EBADF); 1451 1452 /* If the ioctl happens here, the parent is us. */ 1453 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1454 return (dkwedge_del(dkw)); 1455 } 1456 1457 case DIOCLWEDGES: 1458 { 1459 struct dkwedge_list *dkwl = (void *) addr; 1460 1461 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1462 } 1463 1464 case DIOCGSTRATEGY: 1465 { 1466 struct disk_strategy *dks = (void *)addr; 1467 1468 s = splbio(); 1469 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1470 sizeof(dks->dks_name)); 1471 splx(s); 1472 dks->dks_paramlen = 0; 1473 1474 return 0; 1475 } 1476 1477 case DIOCSSTRATEGY: 1478 { 1479 struct disk_strategy *dks = (void *)addr; 1480 struct bufq_state *new; 1481 struct bufq_state *old; 1482 1483 if ((flag & FWRITE) == 0) { 1484 return EBADF; 1485 } 1486 if (dks->dks_param != NULL) { 1487 return EINVAL; 1488 } 1489 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1490 error = bufq_alloc(&new, dks->dks_name, 1491 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1492 if (error) { 1493 return error; 1494 } 1495 s = splbio(); 1496 old = wd->sc_q; 1497 bufq_move(new, old); 1498 wd->sc_q = new; 1499 splx(s); 1500 bufq_free(old); 1501 1502 return 0; 1503 } 1504 1505 default: 1506 return ENOTTY; 1507 } 1508 1509 #ifdef DIAGNOSTIC 1510 panic("wdioctl: impossible"); 1511 #endif 1512 } 1513 1514 #ifdef B_FORMAT 1515 int 1516 wdformat(struct buf *bp) 1517 { 1518 1519 bp->b_flags |= B_FORMAT; 1520 return wdstrategy(bp); 1521 } 1522 #endif 1523 1524 int 1525 wdsize(dev_t dev) 1526 { 1527 struct wd_softc *wd; 1528 int part, omask; 1529 int size; 1530 1531 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1532 1533 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1534 if (wd == NULL) 1535 return (-1); 1536 1537 part = WDPART(dev); 1538 omask = wd->sc_dk.dk_openmask & (1 << part); 1539 1540 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1541 return (-1); 1542 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1543 size = -1; 1544 else 1545 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1546 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1547 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1548 return (-1); 1549 return (size); 1550 } 1551 1552 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1553 static int wddoingadump = 0; 1554 static int wddumprecalibrated = 0; 1555 1556 /* 1557 * Dump core after a system crash. 1558 */ 1559 int 1560 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1561 { 1562 struct wd_softc *wd; /* disk unit to do the I/O */ 1563 struct disklabel *lp; /* disk's disklabel */ 1564 int part, err; 1565 int nblks; /* total number of sectors left to write */ 1566 1567 /* Check if recursive dump; if so, punt. */ 1568 if (wddoingadump) 1569 return EFAULT; 1570 wddoingadump = 1; 1571 1572 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1573 if (wd == NULL) 1574 return (ENXIO); 1575 1576 part = WDPART(dev); 1577 1578 /* Convert to disk sectors. Request must be a multiple of size. */ 1579 lp = wd->sc_dk.dk_label; 1580 if ((size % lp->d_secsize) != 0) 1581 return EFAULT; 1582 nblks = size / lp->d_secsize; 1583 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1584 1585 /* Check transfer bounds against partition size. */ 1586 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1587 return EINVAL; 1588 1589 /* Offset block number to start of partition. */ 1590 blkno += lp->d_partitions[part].p_offset; 1591 1592 /* Recalibrate, if first dump transfer. */ 1593 if (wddumprecalibrated == 0) { 1594 wddumprecalibrated = 1; 1595 (*wd->atabus->ata_reset_drive)(wd->drvp, 1596 AT_POLL | AT_RST_EMERG); 1597 wd->drvp->state = RESET; 1598 } 1599 1600 wd->sc_bp = NULL; 1601 wd->sc_wdc_bio.blkno = blkno; 1602 wd->sc_wdc_bio.flags = ATA_POLL; 1603 if (wd->sc_flags & WDF_LBA48 && 1604 (blkno > LBA48_THRESHOLD || 1605 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1606 wd->sc_wdc_bio.flags |= ATA_LBA48; 1607 if (wd->sc_flags & WDF_LBA) 1608 wd->sc_wdc_bio.flags |= ATA_LBA; 1609 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1610 wd->sc_wdc_bio.databuf = va; 1611 #ifndef WD_DUMP_NOT_TRUSTED 1612 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1613 case ATACMD_TRY_AGAIN: 1614 panic("wddump: try again"); 1615 break; 1616 case ATACMD_QUEUED: 1617 panic("wddump: polled command has been queued"); 1618 break; 1619 case ATACMD_COMPLETE: 1620 break; 1621 } 1622 switch(wd->sc_wdc_bio.error) { 1623 case TIMEOUT: 1624 printf("wddump: device timed out"); 1625 err = EIO; 1626 break; 1627 case ERR_DF: 1628 printf("wddump: drive fault"); 1629 err = EIO; 1630 break; 1631 case ERR_DMA: 1632 printf("wddump: DMA error"); 1633 err = EIO; 1634 break; 1635 case ERROR: 1636 printf("wddump: "); 1637 wdperror(wd); 1638 err = EIO; 1639 break; 1640 case NOERROR: 1641 err = 0; 1642 break; 1643 default: 1644 panic("wddump: unknown error type"); 1645 } 1646 if (err != 0) { 1647 printf("\n"); 1648 return err; 1649 } 1650 #else /* WD_DUMP_NOT_TRUSTED */ 1651 /* Let's just talk about this first... */ 1652 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1653 unit, va, cylin, head, sector); 1654 delay(500 * 1000); /* half a second */ 1655 #endif 1656 1657 wddoingadump = 0; 1658 return 0; 1659 } 1660 1661 #ifdef HAS_BAD144_HANDLING 1662 /* 1663 * Internalize the bad sector table. 1664 */ 1665 void 1666 bad144intern(struct wd_softc *wd) 1667 { 1668 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1669 struct disklabel *lp = wd->sc_dk.dk_label; 1670 int i = 0; 1671 1672 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1673 1674 for (; i < NBT_BAD; i++) { 1675 if (bt->bt_bad[i].bt_cyl == 0xffff) 1676 break; 1677 wd->sc_badsect[i] = 1678 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1679 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1680 (bt->bt_bad[i].bt_trksec & 0xff); 1681 } 1682 for (; i < NBT_BAD+1; i++) 1683 wd->sc_badsect[i] = -1; 1684 } 1685 #endif 1686 1687 static void 1688 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1689 { 1690 prop_dictionary_t disk_info, odisk_info, geom; 1691 const char *cp; 1692 1693 disk_info = prop_dictionary_create(); 1694 1695 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1696 cp = "ST506"; 1697 else { 1698 /* XXX Should have a case for ATA here, too. */ 1699 cp = "ESDI"; 1700 } 1701 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1702 1703 geom = prop_dictionary_create(); 1704 1705 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1706 1707 prop_dictionary_set_uint32(geom, "sector-size", 1708 DEV_BSIZE /* XXX 512? */); 1709 1710 prop_dictionary_set_uint16(geom, "sectors-per-track", 1711 wd->sc_params.atap_sectors); 1712 1713 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1714 wd->sc_params.atap_heads); 1715 1716 if (wd->sc_flags & WDF_LBA) 1717 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1718 wd->sc_capacity / 1719 (wd->sc_params.atap_heads * 1720 wd->sc_params.atap_sectors)); 1721 else 1722 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1723 wd->sc_params.atap_cylinders); 1724 1725 prop_dictionary_set(disk_info, "geometry", geom); 1726 prop_object_release(geom); 1727 1728 prop_dictionary_set(device_properties(&wd->sc_dev), 1729 "disk-info", disk_info); 1730 1731 /* 1732 * Don't release disk_info here; we keep a reference to it. 1733 * disk_detach() will release it when we go away. 1734 */ 1735 1736 odisk_info = wd->sc_dk.dk_info; 1737 wd->sc_dk.dk_info = disk_info; 1738 if (odisk_info) 1739 prop_object_release(odisk_info); 1740 } 1741 1742 int 1743 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1744 { 1745 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1746 case CMD_AGAIN: 1747 return 1; 1748 case CMD_ERR: 1749 /* 1750 * We `know' there's a drive here; just assume it's old. 1751 * This geometry is only used to read the MBR and print a 1752 * (false) attach message. 1753 */ 1754 strncpy(params->atap_model, "ST506", 1755 sizeof params->atap_model); 1756 params->atap_config = ATA_CFG_FIXED; 1757 params->atap_cylinders = 1024; 1758 params->atap_heads = 8; 1759 params->atap_sectors = 17; 1760 params->atap_multi = 1; 1761 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1762 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1763 /* FALLTHROUGH */ 1764 case CMD_OK: 1765 wd_params_to_properties(wd, params); 1766 return 0; 1767 default: 1768 panic("wd_get_params: bad return code from ata_get_params"); 1769 /* NOTREACHED */ 1770 } 1771 } 1772 1773 int 1774 wd_getcache(struct wd_softc *wd, int *bitsp) 1775 { 1776 struct ataparams params; 1777 1778 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1779 return EIO; 1780 if (params.atap_cmd_set1 == 0x0000 || 1781 params.atap_cmd_set1 == 0xffff || 1782 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1783 *bitsp = 0; 1784 return 0; 1785 } 1786 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1787 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1788 *bitsp |= DKCACHE_WRITE; 1789 1790 return 0; 1791 } 1792 1793 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1794 1795 int 1796 wd_setcache(struct wd_softc *wd, int bits) 1797 { 1798 struct ataparams params; 1799 struct ata_command ata_c; 1800 1801 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1802 return EIO; 1803 1804 if (params.atap_cmd_set1 == 0x0000 || 1805 params.atap_cmd_set1 == 0xffff || 1806 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1807 return EOPNOTSUPP; 1808 1809 if ((bits & DKCACHE_READ) == 0 || 1810 (bits & DKCACHE_SAVE) != 0) 1811 return EOPNOTSUPP; 1812 1813 memset(&ata_c, 0, sizeof(struct ata_command)); 1814 ata_c.r_command = SET_FEATURES; 1815 ata_c.r_st_bmask = 0; 1816 ata_c.r_st_pmask = 0; 1817 ata_c.timeout = 30000; /* 30s timeout */ 1818 ata_c.flags = AT_WAIT; 1819 if (bits & DKCACHE_WRITE) 1820 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1821 else 1822 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1823 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1824 printf("%s: wd_setcache command not complete\n", 1825 wd->sc_dev.dv_xname); 1826 return EIO; 1827 } 1828 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1829 char sbuf[sizeof(at_errbits) + 64]; 1830 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1831 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1832 sbuf); 1833 return EIO; 1834 } 1835 return 0; 1836 } 1837 1838 int 1839 wd_standby(struct wd_softc *wd, int flags) 1840 { 1841 struct ata_command ata_c; 1842 1843 memset(&ata_c, 0, sizeof(struct ata_command)); 1844 ata_c.r_command = WDCC_STANDBY_IMMED; 1845 ata_c.r_st_bmask = WDCS_DRDY; 1846 ata_c.r_st_pmask = WDCS_DRDY; 1847 ata_c.flags = flags; 1848 ata_c.timeout = 30000; /* 30s timeout */ 1849 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1850 printf("%s: standby immediate command didn't complete\n", 1851 wd->sc_dev.dv_xname); 1852 return EIO; 1853 } 1854 if (ata_c.flags & AT_ERROR) { 1855 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1856 return ENODEV; 1857 } 1858 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1859 char sbuf[sizeof(at_errbits) + 64]; 1860 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1861 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1862 sbuf); 1863 return EIO; 1864 } 1865 return 0; 1866 } 1867 1868 int 1869 wd_flushcache(struct wd_softc *wd, int flags) 1870 { 1871 struct ata_command ata_c; 1872 1873 /* 1874 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1875 * only ATA-2 and still support it. 1876 */ 1877 if (wd->drvp->ata_vers < 4 && 1878 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1879 wd->sc_params.atap_cmd_set2 == 0xffff)) 1880 return ENODEV; 1881 memset(&ata_c, 0, sizeof(struct ata_command)); 1882 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1883 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1884 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1885 else 1886 ata_c.r_command = WDCC_FLUSHCACHE; 1887 ata_c.r_st_bmask = WDCS_DRDY; 1888 ata_c.r_st_pmask = WDCS_DRDY; 1889 ata_c.flags = flags; 1890 ata_c.timeout = 30000; /* 30s timeout */ 1891 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1892 printf("%s: flush cache command didn't complete\n", 1893 wd->sc_dev.dv_xname); 1894 return EIO; 1895 } 1896 if (ata_c.flags & AT_ERROR) { 1897 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1898 return ENODEV; 1899 } 1900 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1901 char sbuf[sizeof(at_errbits) + 64]; 1902 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1903 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1904 sbuf); 1905 return EIO; 1906 } 1907 return 0; 1908 } 1909 1910 void 1911 wd_shutdown(void *arg) 1912 { 1913 struct wd_softc *wd = arg; 1914 wd_flushcache(wd, AT_POLL); 1915 } 1916 1917 /* 1918 * Allocate space for a ioctl queue structure. Mostly taken from 1919 * scsipi_ioctl.c 1920 */ 1921 struct wd_ioctl * 1922 wi_get(void) 1923 { 1924 struct wd_ioctl *wi; 1925 int s; 1926 1927 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1928 simple_lock_init(&wi->wi_bp.b_interlock); 1929 s = splbio(); 1930 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1931 splx(s); 1932 return (wi); 1933 } 1934 1935 /* 1936 * Free an ioctl structure and remove it from our list 1937 */ 1938 1939 void 1940 wi_free(struct wd_ioctl *wi) 1941 { 1942 int s; 1943 1944 s = splbio(); 1945 LIST_REMOVE(wi, wi_list); 1946 splx(s); 1947 free(wi, M_TEMP); 1948 } 1949 1950 /* 1951 * Find a wd_ioctl structure based on the struct buf. 1952 */ 1953 1954 struct wd_ioctl * 1955 wi_find(struct buf *bp) 1956 { 1957 struct wd_ioctl *wi; 1958 int s; 1959 1960 s = splbio(); 1961 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1962 if (bp == &wi->wi_bp) 1963 break; 1964 splx(s); 1965 return (wi); 1966 } 1967 1968 /* 1969 * Ioctl pseudo strategy routine 1970 * 1971 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1972 * happens here is: 1973 * 1974 * - wdioctl() queues a wd_ioctl structure. 1975 * 1976 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1977 * user space I/O is required. If physio() is called, physio() eventually 1978 * calls wdioctlstrategy(). 1979 * 1980 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1981 * to perform the actual command 1982 * 1983 * The reason for the use of the pseudo strategy routine is because 1984 * when doing I/O to/from user space, physio _really_ wants to be in 1985 * the loop. We could put the entire buffer into the ioctl request 1986 * structure, but that won't scale if we want to do things like download 1987 * microcode. 1988 */ 1989 1990 void 1991 wdioctlstrategy(struct buf *bp) 1992 { 1993 struct wd_ioctl *wi; 1994 struct ata_command ata_c; 1995 int error = 0; 1996 1997 wi = wi_find(bp); 1998 if (wi == NULL) { 1999 printf("wdioctlstrategy: " 2000 "No matching ioctl request found in queue\n"); 2001 error = EINVAL; 2002 goto done; 2003 } 2004 2005 memset(&ata_c, 0, sizeof(ata_c)); 2006 2007 /* 2008 * Abort if physio broke up the transfer 2009 */ 2010 2011 if (bp->b_bcount != wi->wi_atareq.datalen) { 2012 printf("physio split wd ioctl request... cannot proceed\n"); 2013 error = EIO; 2014 goto done; 2015 } 2016 2017 /* 2018 * Abort if we didn't get a buffer size that was a multiple of 2019 * our sector size (or was larger than NBBY) 2020 */ 2021 2022 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2023 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2024 (1 << NBBY)) { 2025 error = EINVAL; 2026 goto done; 2027 } 2028 2029 /* 2030 * Make sure a timeout was supplied in the ioctl request 2031 */ 2032 2033 if (wi->wi_atareq.timeout == 0) { 2034 error = EINVAL; 2035 goto done; 2036 } 2037 2038 if (wi->wi_atareq.flags & ATACMD_READ) 2039 ata_c.flags |= AT_READ; 2040 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2041 ata_c.flags |= AT_WRITE; 2042 2043 if (wi->wi_atareq.flags & ATACMD_READREG) 2044 ata_c.flags |= AT_READREG; 2045 2046 ata_c.flags |= AT_WAIT; 2047 2048 ata_c.timeout = wi->wi_atareq.timeout; 2049 ata_c.r_command = wi->wi_atareq.command; 2050 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2051 ata_c.r_cyl = wi->wi_atareq.cylinder; 2052 ata_c.r_sector = wi->wi_atareq.sec_num; 2053 ata_c.r_count = wi->wi_atareq.sec_count; 2054 ata_c.r_features = wi->wi_atareq.features; 2055 ata_c.r_st_bmask = WDCS_DRDY; 2056 ata_c.r_st_pmask = WDCS_DRDY; 2057 ata_c.data = wi->wi_bp.b_data; 2058 ata_c.bcount = wi->wi_bp.b_bcount; 2059 2060 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2061 != ATACMD_COMPLETE) { 2062 wi->wi_atareq.retsts = ATACMD_ERROR; 2063 error = EIO; 2064 goto done; 2065 } 2066 2067 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2068 if (ata_c.flags & AT_ERROR) { 2069 wi->wi_atareq.retsts = ATACMD_ERROR; 2070 wi->wi_atareq.error = ata_c.r_error; 2071 } else if (ata_c.flags & AT_DF) 2072 wi->wi_atareq.retsts = ATACMD_DF; 2073 else 2074 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2075 } else { 2076 wi->wi_atareq.retsts = ATACMD_OK; 2077 if (wi->wi_atareq.flags & ATACMD_READREG) { 2078 wi->wi_atareq.head = ata_c.r_head ; 2079 wi->wi_atareq.cylinder = ata_c.r_cyl; 2080 wi->wi_atareq.sec_num = ata_c.r_sector; 2081 wi->wi_atareq.sec_count = ata_c.r_count; 2082 wi->wi_atareq.features = ata_c.r_features; 2083 wi->wi_atareq.error = ata_c.r_error; 2084 } 2085 } 2086 2087 done: 2088 bp->b_error = error; 2089 biodone(bp); 2090 } 2091
Indexes created Sat Sep 27 22:09:54 GMT 2025