wd.c revision 1.327
1 /* $NetBSD: wd.c,v 1.327 2006/08/01 07:19:07 lukem 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 1.327 2006/08/01 07:19:07 lukem 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 #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 { "ST3160812A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160023A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 { "ST3160827A*", 251 WD_QUIRK_FORCE_LBA48 }, 252 /* Attempt to catch all seagate drives larger than 200GB */ 253 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 254 WD_QUIRK_FORCE_LBA48 }, 255 { NULL, 256 0 } 257 }; 258 259 static const struct wd_quirk * 260 wd_lookup_quirks(const char *name) 261 { 262 const struct wd_quirk *wdq; 263 const char *estr; 264 265 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 266 /* 267 * We only want exact matches (which include matches 268 * against globbing characters). 269 */ 270 if (pmatch(name, wdq->wdq_match, &estr) == 2) 271 return (wdq); 272 } 273 return (NULL); 274 } 275 276 int 277 wdprobe(struct device *parent, struct cfdata *match, void *aux) 278 { 279 struct ata_device *adev = aux; 280 281 if (adev == NULL) 282 return 0; 283 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 284 return 0; 285 286 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 287 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 288 return 0; 289 return 1; 290 } 291 292 void 293 wdattach(struct device *parent, struct device *self, void *aux) 294 { 295 struct wd_softc *wd = (void *)self; 296 struct ata_device *adev= aux; 297 int i, blank; 298 char tbuf[41], pbuf[9], c, *p, *q; 299 const struct wd_quirk *wdq; 300 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 301 302 callout_init(&wd->sc_restart_ch); 303 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 304 #ifdef WD_SOFTBADSECT 305 SLIST_INIT(&wd->sc_bslist); 306 #endif 307 wd->atabus = adev->adev_bustype; 308 wd->openings = adev->adev_openings; 309 wd->drvp = adev->adev_drv_data; 310 311 wd->drvp->drv_done = wddone; 312 wd->drvp->drv_softc = &wd->sc_dev; 313 314 aprint_naive("\n"); 315 316 /* read our drive info */ 317 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 318 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 319 return; 320 } 321 322 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 323 i < sizeof(wd->sc_params.atap_model); i++) { 324 c = *p++; 325 if (c == '\0') 326 break; 327 if (c != ' ') { 328 if (blank) { 329 *q++ = ' '; 330 blank = 0; 331 } 332 *q++ = c; 333 } else 334 blank = 1; 335 } 336 *q++ = '\0'; 337 338 aprint_normal(": <%s>\n", tbuf); 339 340 wdq = wd_lookup_quirks(tbuf); 341 if (wdq != NULL) 342 wd->sc_quirks = wdq->wdq_quirks; 343 344 if (wd->sc_quirks != 0) { 345 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 346 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 347 sbuf, sizeof(sbuf)); 348 aprint_normal("%s: quirks %s\n", wd->sc_dev.dv_xname, sbuf); 349 } 350 351 if ((wd->sc_params.atap_multi & 0xff) > 1) { 352 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 353 } else { 354 wd->sc_multi = 1; 355 } 356 357 aprint_normal("%s: drive supports %d-sector PIO transfers,", 358 wd->sc_dev.dv_xname, wd->sc_multi); 359 360 /* 48-bit LBA addressing */ 361 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 362 wd->sc_flags |= WDF_LBA48; 363 364 /* Prior to ATA-4, LBA was optional. */ 365 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 366 wd->sc_flags |= WDF_LBA; 367 #if 0 368 /* ATA-4 requires LBA. */ 369 if (wd->sc_params.atap_ataversion != 0xffff && 370 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 371 wd->sc_flags |= WDF_LBA; 372 #endif 373 374 if ((wd->sc_flags & WDF_LBA48) != 0) { 375 aprint_normal(" LBA48 addressing\n"); 376 wd->sc_capacity = 377 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 378 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 379 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 380 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 381 } else if ((wd->sc_flags & WDF_LBA) != 0) { 382 aprint_normal(" LBA addressing\n"); 383 wd->sc_capacity = 384 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 385 wd->sc_params.atap_capacity[0]; 386 } else { 387 aprint_normal(" chs addressing\n"); 388 wd->sc_capacity = 389 wd->sc_params.atap_cylinders * 390 wd->sc_params.atap_heads * 391 wd->sc_params.atap_sectors; 392 } 393 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 394 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 395 "%d bytes/sect x %llu sectors\n", 396 self->dv_xname, pbuf, 397 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 398 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 399 wd->sc_params.atap_cylinders, 400 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 401 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 402 403 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 404 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 405 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 406 /* 407 * Initialize and attach the disk structure. 408 */ 409 wd->sc_dk.dk_driver = &wddkdriver; 410 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 411 disk_attach(&wd->sc_dk); 412 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 413 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 414 if (wd->sc_sdhook == NULL) 415 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 416 wd->sc_dev.dv_xname); 417 #if NRND > 0 418 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 419 RND_TYPE_DISK, 0); 420 #endif 421 422 /* Discover wedges on this disk. */ 423 dkwedge_discover(&wd->sc_dk); 424 } 425 426 int 427 wdactivate(struct device *self, enum devact act) 428 { 429 int rv = 0; 430 431 switch (act) { 432 case DVACT_ACTIVATE: 433 rv = EOPNOTSUPP; 434 break; 435 436 case DVACT_DEACTIVATE: 437 /* 438 * Nothing to do; we key off the device's DVF_ACTIVATE. 439 */ 440 break; 441 } 442 return (rv); 443 } 444 445 int 446 wddetach(struct device *self, int flags) 447 { 448 struct wd_softc *sc = (struct wd_softc *)self; 449 int s, bmaj, cmaj, i, mn; 450 451 /* locate the major number */ 452 bmaj = bdevsw_lookup_major(&wd_bdevsw); 453 cmaj = cdevsw_lookup_major(&wd_cdevsw); 454 455 /* Nuke the vnodes for any open instances. */ 456 for (i = 0; i < MAXPARTITIONS; i++) { 457 mn = WDMINOR(device_unit(self), i); 458 vdevgone(bmaj, mn, mn, VBLK); 459 vdevgone(cmaj, mn, mn, VCHR); 460 } 461 462 /* Delete all of our wedges. */ 463 dkwedge_delall(&sc->sc_dk); 464 465 s = splbio(); 466 467 /* Kill off any queued buffers. */ 468 bufq_drain(sc->sc_q); 469 470 bufq_free(sc->sc_q); 471 sc->atabus->ata_killpending(sc->drvp); 472 473 splx(s); 474 475 /* Detach disk. */ 476 disk_detach(&sc->sc_dk); 477 478 #ifdef WD_SOFTBADSECT 479 /* Clean out the bad sector list */ 480 while (!SLIST_EMPTY(&sc->sc_bslist)) { 481 void *head = SLIST_FIRST(&sc->sc_bslist); 482 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 483 free(head, M_TEMP); 484 } 485 sc->sc_bscount = 0; 486 #endif 487 488 /* Get rid of the shutdown hook. */ 489 if (sc->sc_sdhook != NULL) 490 shutdownhook_disestablish(sc->sc_sdhook); 491 492 #if NRND > 0 493 /* Unhook the entropy source. */ 494 rnd_detach_source(&sc->rnd_source); 495 #endif 496 497 sc->drvp->drive_flags = 0; /* no drive any more here */ 498 499 return (0); 500 } 501 502 /* 503 * Read/write routine for a buffer. Validates the arguments and schedules the 504 * transfer. Does not wait for the transfer to complete. 505 */ 506 void 507 wdstrategy(struct buf *bp) 508 { 509 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 510 struct disklabel *lp = wd->sc_dk.dk_label; 511 daddr_t blkno; 512 int s; 513 514 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 515 DEBUG_XFERS); 516 517 /* Valid request? */ 518 if (bp->b_blkno < 0 || 519 (bp->b_bcount % lp->d_secsize) != 0 || 520 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 521 bp->b_error = EINVAL; 522 goto bad; 523 } 524 525 /* If device invalidated (e.g. media change, door open), error. */ 526 if ((wd->sc_flags & WDF_LOADED) == 0) { 527 bp->b_error = EIO; 528 goto bad; 529 } 530 531 /* If it's a null transfer, return immediately. */ 532 if (bp->b_bcount == 0) 533 goto done; 534 535 /* 536 * Do bounds checking, adjust transfer. if error, process. 537 * If end of partition, just return. 538 */ 539 if (WDPART(bp->b_dev) == RAW_PART) { 540 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 541 wd->sc_capacity) <= 0) 542 goto done; 543 } else { 544 if (bounds_check_with_label(&wd->sc_dk, bp, 545 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 546 goto done; 547 } 548 549 /* 550 * Now convert the block number to absolute and put it in 551 * terms of the device's logical block size. 552 */ 553 if (lp->d_secsize >= DEV_BSIZE) 554 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 555 else 556 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 557 558 if (WDPART(bp->b_dev) != RAW_PART) 559 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 560 561 bp->b_rawblkno = blkno; 562 563 #ifdef WD_SOFTBADSECT 564 /* 565 * If the transfer about to be attempted contains only a block that 566 * is known to be bad then return an error for the transfer without 567 * even attempting to start a transfer up under the premis that we 568 * will just end up doing more retries for a transfer that will end 569 * up failing again. 570 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 571 */ 572 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 573 struct disk_badsectors *dbs; 574 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 575 576 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 577 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 578 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 579 bp->b_error = EIO; 580 goto bad; 581 } 582 } 583 #endif 584 585 /* Queue transfer on drive, activate drive and controller if idle. */ 586 s = splbio(); 587 BUFQ_PUT(wd->sc_q, bp); 588 wdstart(wd); 589 splx(s); 590 return; 591 bad: 592 bp->b_flags |= B_ERROR; 593 done: 594 /* Toss transfer; we're done early. */ 595 bp->b_resid = bp->b_bcount; 596 biodone(bp); 597 } 598 599 /* 600 * Queue a drive for I/O. 601 */ 602 void 603 wdstart(void *arg) 604 { 605 struct wd_softc *wd = arg; 606 struct buf *bp = NULL; 607 608 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 609 DEBUG_XFERS); 610 while (wd->openings > 0) { 611 612 /* Is there a buf for us ? */ 613 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 614 return; 615 616 /* 617 * Make the command. First lock the device 618 */ 619 wd->openings--; 620 621 wd->retries = 0; 622 __wdstart(wd, bp); 623 } 624 } 625 626 static void 627 wd_split_mod15_write(struct buf *bp) 628 { 629 struct buf *obp = bp->b_private; 630 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 631 632 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 633 /* 634 * Propagate the error. If this was the first half of 635 * the original transfer, make sure to account for that 636 * in the residual. 637 */ 638 if (bp->b_data == obp->b_data) 639 bp->b_resid += bp->b_bcount; 640 goto done; 641 } 642 643 /* 644 * If this was the second half of the transfer, we're all done! 645 */ 646 if (bp->b_data != obp->b_data) 647 goto done; 648 649 /* 650 * Advance the pointer to the second half and issue that command 651 * using the same opening. 652 */ 653 bp->b_flags = obp->b_flags | B_CALL; 654 bp->b_data += bp->b_bcount; 655 bp->b_blkno += (bp->b_bcount / 512); 656 bp->b_rawblkno += (bp->b_bcount / 512); 657 __wdstart(sc, bp); 658 return; 659 660 done: 661 obp->b_flags |= bp->b_flags & B_ERROR; 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_flags |= B_ERROR; 694 bp->b_resid = bp->b_bcount; 695 biodone(bp); 696 wd->openings++; 697 return; 698 } 699 700 nbp->b_error = 0; 701 nbp->b_proc = bp->b_proc; 702 nbp->b_vp = NULLVP; 703 nbp->b_dev = bp->b_dev; 704 705 nbp->b_bcount = bp->b_bcount / 2; 706 nbp->b_bufsize = bp->b_bcount / 2; 707 nbp->b_data = bp->b_data; 708 709 nbp->b_blkno = bp->b_blkno; 710 nbp->b_rawblkno = bp->b_rawblkno; 711 712 nbp->b_flags = bp->b_flags | B_CALL; 713 nbp->b_iodone = wd_split_mod15_write; 714 715 /* Put ptr to orig buf in b_private and use new buf */ 716 nbp->b_private = bp; 717 718 BIO_COPYPRIO(nbp, bp); 719 720 bp = nbp; 721 } 722 723 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 724 wd->sc_wdc_bio.blkdone =0; 725 wd->sc_bp = bp; 726 /* 727 * If we're retrying, retry in single-sector mode. This will give us 728 * the sector number of the problem, and will eventually allow the 729 * transfer to succeed. 730 */ 731 if (wd->retries >= WDIORETRIES_SINGLE) 732 wd->sc_wdc_bio.flags = ATA_SINGLE; 733 else 734 wd->sc_wdc_bio.flags = 0; 735 if (wd->sc_flags & WDF_LBA48 && 736 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 737 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 738 wd->sc_wdc_bio.flags |= ATA_LBA48; 739 if (wd->sc_flags & WDF_LBA) 740 wd->sc_wdc_bio.flags |= ATA_LBA; 741 if (bp->b_flags & B_READ) 742 wd->sc_wdc_bio.flags |= ATA_READ; 743 wd->sc_wdc_bio.bcount = bp->b_bcount; 744 wd->sc_wdc_bio.databuf = bp->b_data; 745 /* Instrumentation. */ 746 disk_busy(&wd->sc_dk); 747 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 748 case ATACMD_TRY_AGAIN: 749 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 750 break; 751 case ATACMD_QUEUED: 752 case ATACMD_COMPLETE: 753 break; 754 default: 755 panic("__wdstart: bad return code from ata_bio()"); 756 } 757 } 758 759 void 760 wddone(void *v) 761 { 762 struct wd_softc *wd = v; 763 struct buf *bp = wd->sc_bp; 764 const char *errmsg; 765 int do_perror = 0; 766 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 767 DEBUG_XFERS); 768 769 if (bp == NULL) 770 return; 771 bp->b_resid = wd->sc_wdc_bio.bcount; 772 switch (wd->sc_wdc_bio.error) { 773 case ERR_DMA: 774 errmsg = "DMA error"; 775 goto retry; 776 case ERR_DF: 777 errmsg = "device fault"; 778 goto retry; 779 case TIMEOUT: 780 errmsg = "device timeout"; 781 goto retry; 782 case ERR_RESET: 783 errmsg = "channel reset"; 784 goto retry2; 785 case ERROR: 786 /* Don't care about media change bits */ 787 if (wd->sc_wdc_bio.r_error != 0 && 788 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 789 goto noerror; 790 errmsg = "error"; 791 do_perror = 1; 792 retry: /* Just reset and retry. Can we do more ? */ 793 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 794 retry2: 795 diskerr(bp, "wd", errmsg, LOG_PRINTF, 796 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 797 if (wd->retries < WDIORETRIES) 798 printf(", retrying\n"); 799 if (do_perror) 800 wdperror(wd); 801 if (wd->retries < WDIORETRIES) { 802 wd->retries++; 803 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 804 wdrestart, wd); 805 return; 806 } 807 printf("\n"); 808 809 #ifdef WD_SOFTBADSECT 810 /* 811 * Not all errors indicate a failed block but those that do, 812 * put the block on the bad-block list for the device. Only 813 * do this for reads because the drive should do it for writes, 814 * itself, according to Manuel. 815 */ 816 if ((bp->b_flags & B_READ) && 817 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 818 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 819 struct disk_badsectors *dbs; 820 821 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 822 dbs->dbs_min = bp->b_rawblkno; 823 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 824 microtime(&dbs->dbs_failedat); 825 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 826 wd->sc_bscount++; 827 } 828 #endif 829 bp->b_flags |= B_ERROR; 830 bp->b_error = EIO; 831 break; 832 case NOERROR: 833 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 834 printf("%s: soft error (corrected)\n", 835 wd->sc_dev.dv_xname); 836 break; 837 case ERR_NODEV: 838 bp->b_flags |= B_ERROR; 839 bp->b_error = EIO; 840 break; 841 } 842 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 843 (bp->b_flags & B_READ)); 844 #if NRND > 0 845 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 846 #endif 847 /* XXX Yuck, but we don't want to increment openings in this case */ 848 if (__predict_false((bp->b_flags & B_CALL) != 0 && 849 bp->b_iodone == wd_split_mod15_write)) 850 biodone(bp); 851 else { 852 biodone(bp); 853 wd->openings++; 854 } 855 wdstart(wd); 856 } 857 858 void 859 wdrestart(void *v) 860 { 861 struct wd_softc *wd = v; 862 struct buf *bp = wd->sc_bp; 863 int s; 864 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 865 DEBUG_XFERS); 866 867 s = splbio(); 868 __wdstart(v, bp); 869 splx(s); 870 } 871 872 int 873 wdread(dev_t dev, struct uio *uio, int flags) 874 { 875 876 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 877 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 878 } 879 880 int 881 wdwrite(dev_t dev, struct uio *uio, int flags) 882 { 883 884 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 885 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 886 } 887 888 int 889 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 890 { 891 struct wd_softc *wd; 892 int part, error; 893 894 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 895 wd = device_lookup(&wd_cd, WDUNIT(dev)); 896 if (wd == NULL) 897 return (ENXIO); 898 899 if (! device_is_active(&wd->sc_dev)) 900 return (ENODEV); 901 902 part = WDPART(dev); 903 904 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 905 return (error); 906 907 /* 908 * If there are wedges, and this is not RAW_PART, then we 909 * need to fail. 910 */ 911 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 912 error = EBUSY; 913 goto bad1; 914 } 915 916 /* 917 * If this is the first open of this device, add a reference 918 * to the adapter. 919 */ 920 if (wd->sc_dk.dk_openmask == 0 && 921 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 922 goto bad1; 923 924 if (wd->sc_dk.dk_openmask != 0) { 925 /* 926 * If any partition is open, but the disk has been invalidated, 927 * disallow further opens. 928 */ 929 if ((wd->sc_flags & WDF_LOADED) == 0) { 930 error = EIO; 931 goto bad2; 932 } 933 } else { 934 if ((wd->sc_flags & WDF_LOADED) == 0) { 935 wd->sc_flags |= WDF_LOADED; 936 937 /* Load the physical device parameters. */ 938 wd_get_params(wd, AT_WAIT, &wd->sc_params); 939 940 /* Load the partition info if not already loaded. */ 941 wdgetdisklabel(wd); 942 } 943 } 944 945 /* Check that the partition exists. */ 946 if (part != RAW_PART && 947 (part >= wd->sc_dk.dk_label->d_npartitions || 948 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 949 error = ENXIO; 950 goto bad2; 951 } 952 953 /* Insure only one open at a time. */ 954 switch (fmt) { 955 case S_IFCHR: 956 wd->sc_dk.dk_copenmask |= (1 << part); 957 break; 958 case S_IFBLK: 959 wd->sc_dk.dk_bopenmask |= (1 << part); 960 break; 961 } 962 wd->sc_dk.dk_openmask = 963 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 964 965 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 966 return 0; 967 968 bad2: 969 if (wd->sc_dk.dk_openmask == 0) 970 wd->atabus->ata_delref(wd->drvp); 971 bad1: 972 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 973 return error; 974 } 975 976 int 977 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 978 { 979 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 980 int part = WDPART(dev); 981 int error; 982 983 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 984 985 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 986 return error; 987 988 switch (fmt) { 989 case S_IFCHR: 990 wd->sc_dk.dk_copenmask &= ~(1 << part); 991 break; 992 case S_IFBLK: 993 wd->sc_dk.dk_bopenmask &= ~(1 << part); 994 break; 995 } 996 wd->sc_dk.dk_openmask = 997 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 998 999 if (wd->sc_dk.dk_openmask == 0) { 1000 wd_flushcache(wd, AT_WAIT); 1001 1002 if (! (wd->sc_flags & WDF_KLABEL)) 1003 wd->sc_flags &= ~WDF_LOADED; 1004 1005 wd->atabus->ata_delref(wd->drvp); 1006 } 1007 1008 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1009 return 0; 1010 } 1011 1012 void 1013 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1014 { 1015 1016 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1017 memset(lp, 0, sizeof(struct disklabel)); 1018 1019 lp->d_secsize = DEV_BSIZE; 1020 lp->d_ntracks = wd->sc_params.atap_heads; 1021 lp->d_nsectors = wd->sc_params.atap_sectors; 1022 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1023 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1024 wd->sc_params.atap_cylinders; 1025 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1026 1027 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1028 lp->d_type = DTYPE_ST506; 1029 else 1030 lp->d_type = DTYPE_ESDI; 1031 1032 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1033 strncpy(lp->d_packname, "fictitious", 16); 1034 if (wd->sc_capacity > UINT32_MAX) 1035 lp->d_secperunit = UINT32_MAX; 1036 else 1037 lp->d_secperunit = wd->sc_capacity; 1038 lp->d_rpm = 3600; 1039 lp->d_interleave = 1; 1040 lp->d_flags = 0; 1041 1042 lp->d_partitions[RAW_PART].p_offset = 0; 1043 lp->d_partitions[RAW_PART].p_size = 1044 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1045 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1046 lp->d_npartitions = RAW_PART + 1; 1047 1048 lp->d_magic = DISKMAGIC; 1049 lp->d_magic2 = DISKMAGIC; 1050 lp->d_checksum = dkcksum(lp); 1051 } 1052 1053 /* 1054 * Fabricate a default disk label, and try to read the correct one. 1055 */ 1056 void 1057 wdgetdisklabel(struct wd_softc *wd) 1058 { 1059 struct disklabel *lp = wd->sc_dk.dk_label; 1060 const char *errstring; 1061 int s; 1062 1063 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1064 1065 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1066 1067 wdgetdefaultlabel(wd, lp); 1068 1069 wd->sc_badsect[0] = -1; 1070 1071 if (wd->drvp->state > RESET) { 1072 s = splbio(); 1073 wd->drvp->drive_flags |= DRIVE_RESET; 1074 splx(s); 1075 } 1076 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1077 RAW_PART), wdstrategy, lp, 1078 wd->sc_dk.dk_cpulabel); 1079 if (errstring) { 1080 /* 1081 * This probably happened because the drive's default 1082 * geometry doesn't match the DOS geometry. We 1083 * assume the DOS geometry is now in the label and try 1084 * again. XXX This is a kluge. 1085 */ 1086 if (wd->drvp->state > RESET) { 1087 s = splbio(); 1088 wd->drvp->drive_flags |= DRIVE_RESET; 1089 splx(s); 1090 } 1091 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1092 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1093 } 1094 if (errstring) { 1095 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1096 return; 1097 } 1098 1099 if (wd->drvp->state > RESET) { 1100 s = splbio(); 1101 wd->drvp->drive_flags |= DRIVE_RESET; 1102 splx(s); 1103 } 1104 #ifdef HAS_BAD144_HANDLING 1105 if ((lp->d_flags & D_BADSECT) != 0) 1106 bad144intern(wd); 1107 #endif 1108 } 1109 1110 void 1111 wdperror(const struct wd_softc *wd) 1112 { 1113 static const char *const errstr0_3[] = {"address mark not found", 1114 "track 0 not found", "aborted command", "media change requested", 1115 "id not found", "media changed", "uncorrectable data error", 1116 "bad block detected"}; 1117 static const char *const errstr4_5[] = { 1118 "obsolete (address mark not found)", 1119 "no media/write protected", "aborted command", 1120 "media change requested", "id not found", "media changed", 1121 "uncorrectable data error", "interface CRC error"}; 1122 const char *const *errstr; 1123 int i; 1124 const char *sep = ""; 1125 1126 const char *devname = wd->sc_dev.dv_xname; 1127 struct ata_drive_datas *drvp = wd->drvp; 1128 int errno = wd->sc_wdc_bio.r_error; 1129 1130 if (drvp->ata_vers >= 4) 1131 errstr = errstr4_5; 1132 else 1133 errstr = errstr0_3; 1134 1135 printf("%s: (", devname); 1136 1137 if (errno == 0) 1138 printf("error not notified"); 1139 1140 for (i = 0; i < 8; i++) { 1141 if (errno & (1 << i)) { 1142 printf("%s%s", sep, errstr[i]); 1143 sep = ", "; 1144 } 1145 } 1146 printf(")\n"); 1147 } 1148 1149 int 1150 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct lwp *l) 1151 { 1152 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1153 int error = 0, s; 1154 #ifdef __HAVE_OLD_DISKLABEL 1155 struct disklabel *newlabel = NULL; 1156 #endif 1157 1158 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1159 1160 if ((wd->sc_flags & WDF_LOADED) == 0) 1161 return EIO; 1162 1163 switch (xfer) { 1164 #ifdef HAS_BAD144_HANDLING 1165 case DIOCSBAD: 1166 if ((flag & FWRITE) == 0) 1167 return EBADF; 1168 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1169 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1170 bad144intern(wd); 1171 return 0; 1172 #endif 1173 #ifdef WD_SOFTBADSECT 1174 case DIOCBSLIST : 1175 { 1176 u_int32_t count, missing, skip; 1177 struct disk_badsecinfo dbsi; 1178 struct disk_badsectors *dbs; 1179 size_t available; 1180 caddr_t laddr; 1181 1182 dbsi = *(struct disk_badsecinfo *)addr; 1183 missing = wd->sc_bscount; 1184 count = 0; 1185 available = dbsi.dbsi_bufsize; 1186 skip = dbsi.dbsi_skip; 1187 laddr = dbsi.dbsi_buffer; 1188 1189 /* 1190 * We start this loop with the expectation that all of the 1191 * entries will be missed and decrement this counter each 1192 * time we either skip over one (already copied out) or 1193 * we actually copy it back to user space. The structs 1194 * holding the bad sector information are copied directly 1195 * back to user space whilst the summary is returned via 1196 * the struct passed in via the ioctl. 1197 */ 1198 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1199 if (skip > 0) { 1200 missing--; 1201 skip--; 1202 continue; 1203 } 1204 if (available < sizeof(*dbs)) 1205 break; 1206 available -= sizeof(*dbs); 1207 copyout(dbs, laddr, sizeof(*dbs)); 1208 laddr += sizeof(*dbs); 1209 missing--; 1210 count++; 1211 } 1212 dbsi.dbsi_left = missing; 1213 dbsi.dbsi_copied = count; 1214 *(struct disk_badsecinfo *)addr = dbsi; 1215 return 0; 1216 } 1217 1218 case DIOCBSFLUSH : 1219 /* Clean out the bad sector list */ 1220 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1221 void *head = SLIST_FIRST(&wd->sc_bslist); 1222 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1223 free(head, M_TEMP); 1224 } 1225 wd->sc_bscount = 0; 1226 return 0; 1227 #endif 1228 case DIOCGDINFO: 1229 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1230 return 0; 1231 #ifdef __HAVE_OLD_DISKLABEL 1232 case ODIOCGDINFO: 1233 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1234 if (newlabel == NULL) 1235 return EIO; 1236 *newlabel = *(wd->sc_dk.dk_label); 1237 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1238 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1239 else 1240 error = ENOTTY; 1241 free(newlabel, M_TEMP); 1242 return error; 1243 #endif 1244 1245 case DIOCGPART: 1246 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1247 ((struct partinfo *)addr)->part = 1248 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1249 return 0; 1250 1251 case DIOCWDINFO: 1252 case DIOCSDINFO: 1253 #ifdef __HAVE_OLD_DISKLABEL 1254 case ODIOCWDINFO: 1255 case ODIOCSDINFO: 1256 #endif 1257 { 1258 struct disklabel *lp; 1259 1260 if ((flag & FWRITE) == 0) 1261 return EBADF; 1262 1263 #ifdef __HAVE_OLD_DISKLABEL 1264 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1265 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1266 if (newlabel == NULL) 1267 return EIO; 1268 memset(newlabel, 0, sizeof newlabel); 1269 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1270 lp = newlabel; 1271 } else 1272 #endif 1273 lp = (struct disklabel *)addr; 1274 1275 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1276 NULL)) != 0) 1277 goto bad; 1278 wd->sc_flags |= WDF_LABELLING; 1279 1280 error = setdisklabel(wd->sc_dk.dk_label, 1281 lp, /*wd->sc_dk.dk_openmask : */0, 1282 wd->sc_dk.dk_cpulabel); 1283 if (error == 0) { 1284 if (wd->drvp->state > RESET) { 1285 s = splbio(); 1286 wd->drvp->drive_flags |= DRIVE_RESET; 1287 splx(s); 1288 } 1289 if (xfer == DIOCWDINFO 1290 #ifdef __HAVE_OLD_DISKLABEL 1291 || xfer == ODIOCWDINFO 1292 #endif 1293 ) 1294 error = writedisklabel(WDLABELDEV(dev), 1295 wdstrategy, wd->sc_dk.dk_label, 1296 wd->sc_dk.dk_cpulabel); 1297 } 1298 1299 wd->sc_flags &= ~WDF_LABELLING; 1300 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1301 bad: 1302 #ifdef __HAVE_OLD_DISKLABEL 1303 if (newlabel != NULL) 1304 free(newlabel, M_TEMP); 1305 #endif 1306 return error; 1307 } 1308 1309 case DIOCKLABEL: 1310 if (*(int *)addr) 1311 wd->sc_flags |= WDF_KLABEL; 1312 else 1313 wd->sc_flags &= ~WDF_KLABEL; 1314 return 0; 1315 1316 case DIOCWLABEL: 1317 if ((flag & FWRITE) == 0) 1318 return EBADF; 1319 if (*(int *)addr) 1320 wd->sc_flags |= WDF_WLABEL; 1321 else 1322 wd->sc_flags &= ~WDF_WLABEL; 1323 return 0; 1324 1325 case DIOCGDEFLABEL: 1326 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1327 return 0; 1328 #ifdef __HAVE_OLD_DISKLABEL 1329 case ODIOCGDEFLABEL: 1330 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1331 if (newlabel == NULL) 1332 return EIO; 1333 wdgetdefaultlabel(wd, newlabel); 1334 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1335 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1336 else 1337 error = ENOTTY; 1338 free(newlabel, M_TEMP); 1339 return error; 1340 #endif 1341 1342 #ifdef notyet 1343 case DIOCWFORMAT: 1344 if ((flag & FWRITE) == 0) 1345 return EBADF; 1346 { 1347 register struct format_op *fop; 1348 struct iovec aiov; 1349 struct uio auio; 1350 1351 fop = (struct format_op *)addr; 1352 aiov.iov_base = fop->df_buf; 1353 aiov.iov_len = fop->df_count; 1354 auio.uio_iov = &aiov; 1355 auio.uio_iovcnt = 1; 1356 auio.uio_resid = fop->df_count; 1357 auio.uio_offset = 1358 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1359 auio.uio_vmspace = l->l_proc->p_vmspace; 1360 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1361 &auio); 1362 fop->df_count -= auio.uio_resid; 1363 fop->df_reg[0] = wdc->sc_status; 1364 fop->df_reg[1] = wdc->sc_error; 1365 return error; 1366 } 1367 #endif 1368 case DIOCGCACHE: 1369 return wd_getcache(wd, (int *)addr); 1370 1371 case DIOCSCACHE: 1372 return wd_setcache(wd, *(int *)addr); 1373 1374 case DIOCCACHESYNC: 1375 return wd_flushcache(wd, AT_WAIT); 1376 1377 case ATAIOCCOMMAND: 1378 /* 1379 * Make sure this command is (relatively) safe first 1380 */ 1381 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1382 (flag & FWRITE) == 0) 1383 return (EBADF); 1384 { 1385 struct wd_ioctl *wi; 1386 atareq_t *atareq = (atareq_t *) addr; 1387 int error1; 1388 1389 wi = wi_get(); 1390 wi->wi_softc = wd; 1391 wi->wi_atareq = *atareq; 1392 1393 if (atareq->datalen && atareq->flags & 1394 (ATACMD_READ | ATACMD_WRITE)) { 1395 wi->wi_iov.iov_base = atareq->databuf; 1396 wi->wi_iov.iov_len = atareq->datalen; 1397 wi->wi_uio.uio_iov = &wi->wi_iov; 1398 wi->wi_uio.uio_iovcnt = 1; 1399 wi->wi_uio.uio_resid = atareq->datalen; 1400 wi->wi_uio.uio_offset = 0; 1401 wi->wi_uio.uio_rw = 1402 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1403 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1404 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1405 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1406 minphys, &wi->wi_uio); 1407 } else { 1408 /* No need to call physio if we don't have any 1409 user data */ 1410 wi->wi_bp.b_flags = 0; 1411 wi->wi_bp.b_data = 0; 1412 wi->wi_bp.b_bcount = 0; 1413 wi->wi_bp.b_dev = 0; 1414 wi->wi_bp.b_proc = l->l_proc; 1415 wdioctlstrategy(&wi->wi_bp); 1416 error1 = wi->wi_bp.b_error; 1417 } 1418 *atareq = wi->wi_atareq; 1419 wi_free(wi); 1420 return(error1); 1421 } 1422 1423 case DIOCAWEDGE: 1424 { 1425 struct dkwedge_info *dkw = (void *) addr; 1426 1427 if ((flag & FWRITE) == 0) 1428 return (EBADF); 1429 1430 /* If the ioctl happens here, the parent is us. */ 1431 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1432 return (dkwedge_add(dkw)); 1433 } 1434 1435 case DIOCDWEDGE: 1436 { 1437 struct dkwedge_info *dkw = (void *) addr; 1438 1439 if ((flag & FWRITE) == 0) 1440 return (EBADF); 1441 1442 /* If the ioctl happens here, the parent is us. */ 1443 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1444 return (dkwedge_del(dkw)); 1445 } 1446 1447 case DIOCLWEDGES: 1448 { 1449 struct dkwedge_list *dkwl = (void *) addr; 1450 1451 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1452 } 1453 1454 case DIOCGSTRATEGY: 1455 { 1456 struct disk_strategy *dks = (void *)addr; 1457 1458 s = splbio(); 1459 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1460 sizeof(dks->dks_name)); 1461 splx(s); 1462 dks->dks_paramlen = 0; 1463 1464 return 0; 1465 } 1466 1467 case DIOCSSTRATEGY: 1468 { 1469 struct disk_strategy *dks = (void *)addr; 1470 struct bufq_state *new; 1471 struct bufq_state *old; 1472 1473 if ((flag & FWRITE) == 0) { 1474 return EBADF; 1475 } 1476 if (dks->dks_param != NULL) { 1477 return EINVAL; 1478 } 1479 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1480 error = bufq_alloc(&new, dks->dks_name, 1481 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1482 if (error) { 1483 return error; 1484 } 1485 s = splbio(); 1486 old = wd->sc_q; 1487 bufq_move(new, old); 1488 wd->sc_q = new; 1489 splx(s); 1490 bufq_free(old); 1491 1492 return 0; 1493 } 1494 1495 default: 1496 return ENOTTY; 1497 } 1498 1499 #ifdef DIAGNOSTIC 1500 panic("wdioctl: impossible"); 1501 #endif 1502 } 1503 1504 #ifdef B_FORMAT 1505 int 1506 wdformat(struct buf *bp) 1507 { 1508 1509 bp->b_flags |= B_FORMAT; 1510 return wdstrategy(bp); 1511 } 1512 #endif 1513 1514 int 1515 wdsize(dev_t dev) 1516 { 1517 struct wd_softc *wd; 1518 int part, omask; 1519 int size; 1520 1521 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1522 1523 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1524 if (wd == NULL) 1525 return (-1); 1526 1527 part = WDPART(dev); 1528 omask = wd->sc_dk.dk_openmask & (1 << part); 1529 1530 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1531 return (-1); 1532 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1533 size = -1; 1534 else 1535 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1536 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1537 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1538 return (-1); 1539 return (size); 1540 } 1541 1542 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1543 static int wddoingadump = 0; 1544 static int wddumprecalibrated = 0; 1545 1546 /* 1547 * Dump core after a system crash. 1548 */ 1549 int 1550 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1551 { 1552 struct wd_softc *wd; /* disk unit to do the I/O */ 1553 struct disklabel *lp; /* disk's disklabel */ 1554 int part, err; 1555 int nblks; /* total number of sectors left to write */ 1556 1557 /* Check if recursive dump; if so, punt. */ 1558 if (wddoingadump) 1559 return EFAULT; 1560 wddoingadump = 1; 1561 1562 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1563 if (wd == NULL) 1564 return (ENXIO); 1565 1566 part = WDPART(dev); 1567 1568 /* Convert to disk sectors. Request must be a multiple of size. */ 1569 lp = wd->sc_dk.dk_label; 1570 if ((size % lp->d_secsize) != 0) 1571 return EFAULT; 1572 nblks = size / lp->d_secsize; 1573 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1574 1575 /* Check transfer bounds against partition size. */ 1576 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1577 return EINVAL; 1578 1579 /* Offset block number to start of partition. */ 1580 blkno += lp->d_partitions[part].p_offset; 1581 1582 /* Recalibrate, if first dump transfer. */ 1583 if (wddumprecalibrated == 0) { 1584 wddumprecalibrated = 1; 1585 (*wd->atabus->ata_reset_drive)(wd->drvp, 1586 AT_POLL | AT_RST_EMERG); 1587 wd->drvp->state = RESET; 1588 } 1589 1590 wd->sc_bp = NULL; 1591 wd->sc_wdc_bio.blkno = blkno; 1592 wd->sc_wdc_bio.flags = ATA_POLL; 1593 if (wd->sc_flags & WDF_LBA48 && 1594 (blkno > LBA48_THRESHOLD || 1595 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1596 wd->sc_wdc_bio.flags |= ATA_LBA48; 1597 if (wd->sc_flags & WDF_LBA) 1598 wd->sc_wdc_bio.flags |= ATA_LBA; 1599 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1600 wd->sc_wdc_bio.databuf = va; 1601 #ifndef WD_DUMP_NOT_TRUSTED 1602 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1603 case ATACMD_TRY_AGAIN: 1604 panic("wddump: try again"); 1605 break; 1606 case ATACMD_QUEUED: 1607 panic("wddump: polled command has been queued"); 1608 break; 1609 case ATACMD_COMPLETE: 1610 break; 1611 } 1612 switch(wd->sc_wdc_bio.error) { 1613 case TIMEOUT: 1614 printf("wddump: device timed out"); 1615 err = EIO; 1616 break; 1617 case ERR_DF: 1618 printf("wddump: drive fault"); 1619 err = EIO; 1620 break; 1621 case ERR_DMA: 1622 printf("wddump: DMA error"); 1623 err = EIO; 1624 break; 1625 case ERROR: 1626 printf("wddump: "); 1627 wdperror(wd); 1628 err = EIO; 1629 break; 1630 case NOERROR: 1631 err = 0; 1632 break; 1633 default: 1634 panic("wddump: unknown error type"); 1635 } 1636 if (err != 0) { 1637 printf("\n"); 1638 return err; 1639 } 1640 #else /* WD_DUMP_NOT_TRUSTED */ 1641 /* Let's just talk about this first... */ 1642 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1643 unit, va, cylin, head, sector); 1644 delay(500 * 1000); /* half a second */ 1645 #endif 1646 1647 wddoingadump = 0; 1648 return 0; 1649 } 1650 1651 #ifdef HAS_BAD144_HANDLING 1652 /* 1653 * Internalize the bad sector table. 1654 */ 1655 void 1656 bad144intern(struct wd_softc *wd) 1657 { 1658 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1659 struct disklabel *lp = wd->sc_dk.dk_label; 1660 int i = 0; 1661 1662 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1663 1664 for (; i < NBT_BAD; i++) { 1665 if (bt->bt_bad[i].bt_cyl == 0xffff) 1666 break; 1667 wd->sc_badsect[i] = 1668 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1669 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1670 (bt->bt_bad[i].bt_trksec & 0xff); 1671 } 1672 for (; i < NBT_BAD+1; i++) 1673 wd->sc_badsect[i] = -1; 1674 } 1675 #endif 1676 1677 int 1678 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1679 { 1680 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1681 case CMD_AGAIN: 1682 return 1; 1683 case CMD_ERR: 1684 /* 1685 * We `know' there's a drive here; just assume it's old. 1686 * This geometry is only used to read the MBR and print a 1687 * (false) attach message. 1688 */ 1689 strncpy(params->atap_model, "ST506", 1690 sizeof params->atap_model); 1691 params->atap_config = ATA_CFG_FIXED; 1692 params->atap_cylinders = 1024; 1693 params->atap_heads = 8; 1694 params->atap_sectors = 17; 1695 params->atap_multi = 1; 1696 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1697 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1698 return 0; 1699 case CMD_OK: 1700 return 0; 1701 default: 1702 panic("wd_get_params: bad return code from ata_get_params"); 1703 /* NOTREACHED */ 1704 } 1705 } 1706 1707 int 1708 wd_getcache(struct wd_softc *wd, int *bitsp) 1709 { 1710 struct ataparams params; 1711 1712 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1713 return EIO; 1714 if (params.atap_cmd_set1 == 0x0000 || 1715 params.atap_cmd_set1 == 0xffff || 1716 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1717 *bitsp = 0; 1718 return 0; 1719 } 1720 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1721 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1722 *bitsp |= DKCACHE_WRITE; 1723 1724 return 0; 1725 } 1726 1727 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1728 1729 int 1730 wd_setcache(struct wd_softc *wd, int bits) 1731 { 1732 struct ataparams params; 1733 struct ata_command ata_c; 1734 1735 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1736 return EIO; 1737 1738 if (params.atap_cmd_set1 == 0x0000 || 1739 params.atap_cmd_set1 == 0xffff || 1740 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1741 return EOPNOTSUPP; 1742 1743 if ((bits & DKCACHE_READ) == 0 || 1744 (bits & DKCACHE_SAVE) != 0) 1745 return EOPNOTSUPP; 1746 1747 memset(&ata_c, 0, sizeof(struct ata_command)); 1748 ata_c.r_command = SET_FEATURES; 1749 ata_c.r_st_bmask = 0; 1750 ata_c.r_st_pmask = 0; 1751 ata_c.timeout = 30000; /* 30s timeout */ 1752 ata_c.flags = AT_WAIT; 1753 if (bits & DKCACHE_WRITE) 1754 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1755 else 1756 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1757 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1758 printf("%s: wd_setcache command not complete\n", 1759 wd->sc_dev.dv_xname); 1760 return EIO; 1761 } 1762 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1763 char sbuf[sizeof(at_errbits) + 64]; 1764 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1765 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1766 sbuf); 1767 return EIO; 1768 } 1769 return 0; 1770 } 1771 1772 int 1773 wd_standby(struct wd_softc *wd, int flags) 1774 { 1775 struct ata_command ata_c; 1776 1777 memset(&ata_c, 0, sizeof(struct ata_command)); 1778 ata_c.r_command = WDCC_STANDBY_IMMED; 1779 ata_c.r_st_bmask = WDCS_DRDY; 1780 ata_c.r_st_pmask = WDCS_DRDY; 1781 ata_c.flags = flags; 1782 ata_c.timeout = 30000; /* 30s timeout */ 1783 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1784 printf("%s: standby immediate command didn't complete\n", 1785 wd->sc_dev.dv_xname); 1786 return EIO; 1787 } 1788 if (ata_c.flags & AT_ERROR) { 1789 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1790 return ENODEV; 1791 } 1792 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1793 char sbuf[sizeof(at_errbits) + 64]; 1794 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1795 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1796 sbuf); 1797 return EIO; 1798 } 1799 return 0; 1800 } 1801 1802 int 1803 wd_flushcache(struct wd_softc *wd, int flags) 1804 { 1805 struct ata_command ata_c; 1806 1807 /* 1808 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1809 * only ATA-2 and still support it. 1810 */ 1811 if (wd->drvp->ata_vers < 4 && 1812 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1813 wd->sc_params.atap_cmd_set2 == 0xffff)) 1814 return ENODEV; 1815 memset(&ata_c, 0, sizeof(struct ata_command)); 1816 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1817 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1818 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1819 else 1820 ata_c.r_command = WDCC_FLUSHCACHE; 1821 ata_c.r_st_bmask = WDCS_DRDY; 1822 ata_c.r_st_pmask = WDCS_DRDY; 1823 ata_c.flags = flags; 1824 ata_c.timeout = 30000; /* 30s timeout */ 1825 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1826 printf("%s: flush cache command didn't complete\n", 1827 wd->sc_dev.dv_xname); 1828 return EIO; 1829 } 1830 if (ata_c.flags & AT_ERROR) { 1831 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1832 return ENODEV; 1833 } 1834 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1835 char sbuf[sizeof(at_errbits) + 64]; 1836 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1837 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1838 sbuf); 1839 return EIO; 1840 } 1841 return 0; 1842 } 1843 1844 void 1845 wd_shutdown(void *arg) 1846 { 1847 struct wd_softc *wd = arg; 1848 wd_flushcache(wd, AT_POLL); 1849 } 1850 1851 /* 1852 * Allocate space for a ioctl queue structure. Mostly taken from 1853 * scsipi_ioctl.c 1854 */ 1855 struct wd_ioctl * 1856 wi_get(void) 1857 { 1858 struct wd_ioctl *wi; 1859 int s; 1860 1861 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1862 simple_lock_init(&wi->wi_bp.b_interlock); 1863 s = splbio(); 1864 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1865 splx(s); 1866 return (wi); 1867 } 1868 1869 /* 1870 * Free an ioctl structure and remove it from our list 1871 */ 1872 1873 void 1874 wi_free(struct wd_ioctl *wi) 1875 { 1876 int s; 1877 1878 s = splbio(); 1879 LIST_REMOVE(wi, wi_list); 1880 splx(s); 1881 free(wi, M_TEMP); 1882 } 1883 1884 /* 1885 * Find a wd_ioctl structure based on the struct buf. 1886 */ 1887 1888 struct wd_ioctl * 1889 wi_find(struct buf *bp) 1890 { 1891 struct wd_ioctl *wi; 1892 int s; 1893 1894 s = splbio(); 1895 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1896 if (bp == &wi->wi_bp) 1897 break; 1898 splx(s); 1899 return (wi); 1900 } 1901 1902 /* 1903 * Ioctl pseudo strategy routine 1904 * 1905 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1906 * happens here is: 1907 * 1908 * - wdioctl() queues a wd_ioctl structure. 1909 * 1910 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1911 * user space I/O is required. If physio() is called, physio() eventually 1912 * calls wdioctlstrategy(). 1913 * 1914 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1915 * to perform the actual command 1916 * 1917 * The reason for the use of the pseudo strategy routine is because 1918 * when doing I/O to/from user space, physio _really_ wants to be in 1919 * the loop. We could put the entire buffer into the ioctl request 1920 * structure, but that won't scale if we want to do things like download 1921 * microcode. 1922 */ 1923 1924 void 1925 wdioctlstrategy(struct buf *bp) 1926 { 1927 struct wd_ioctl *wi; 1928 struct ata_command ata_c; 1929 int error = 0; 1930 1931 wi = wi_find(bp); 1932 if (wi == NULL) { 1933 printf("wdioctlstrategy: " 1934 "No matching ioctl request found in queue\n"); 1935 error = EINVAL; 1936 goto bad; 1937 } 1938 1939 memset(&ata_c, 0, sizeof(ata_c)); 1940 1941 /* 1942 * Abort if physio broke up the transfer 1943 */ 1944 1945 if (bp->b_bcount != wi->wi_atareq.datalen) { 1946 printf("physio split wd ioctl request... cannot proceed\n"); 1947 error = EIO; 1948 goto bad; 1949 } 1950 1951 /* 1952 * Abort if we didn't get a buffer size that was a multiple of 1953 * our sector size (or was larger than NBBY) 1954 */ 1955 1956 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1957 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1958 (1 << NBBY)) { 1959 error = EINVAL; 1960 goto bad; 1961 } 1962 1963 /* 1964 * Make sure a timeout was supplied in the ioctl request 1965 */ 1966 1967 if (wi->wi_atareq.timeout == 0) { 1968 error = EINVAL; 1969 goto bad; 1970 } 1971 1972 if (wi->wi_atareq.flags & ATACMD_READ) 1973 ata_c.flags |= AT_READ; 1974 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1975 ata_c.flags |= AT_WRITE; 1976 1977 if (wi->wi_atareq.flags & ATACMD_READREG) 1978 ata_c.flags |= AT_READREG; 1979 1980 ata_c.flags |= AT_WAIT; 1981 1982 ata_c.timeout = wi->wi_atareq.timeout; 1983 ata_c.r_command = wi->wi_atareq.command; 1984 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1985 ata_c.r_cyl = wi->wi_atareq.cylinder; 1986 ata_c.r_sector = wi->wi_atareq.sec_num; 1987 ata_c.r_count = wi->wi_atareq.sec_count; 1988 ata_c.r_features = wi->wi_atareq.features; 1989 ata_c.r_st_bmask = WDCS_DRDY; 1990 ata_c.r_st_pmask = WDCS_DRDY; 1991 ata_c.data = wi->wi_bp.b_data; 1992 ata_c.bcount = wi->wi_bp.b_bcount; 1993 1994 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1995 != ATACMD_COMPLETE) { 1996 wi->wi_atareq.retsts = ATACMD_ERROR; 1997 goto bad; 1998 } 1999 2000 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2001 if (ata_c.flags & AT_ERROR) { 2002 wi->wi_atareq.retsts = ATACMD_ERROR; 2003 wi->wi_atareq.error = ata_c.r_error; 2004 } else if (ata_c.flags & AT_DF) 2005 wi->wi_atareq.retsts = ATACMD_DF; 2006 else 2007 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2008 } else { 2009 wi->wi_atareq.retsts = ATACMD_OK; 2010 if (wi->wi_atareq.flags & ATACMD_READREG) { 2011 wi->wi_atareq.head = ata_c.r_head ; 2012 wi->wi_atareq.cylinder = ata_c.r_cyl; 2013 wi->wi_atareq.sec_num = ata_c.r_sector; 2014 wi->wi_atareq.sec_count = ata_c.r_count; 2015 wi->wi_atareq.features = ata_c.r_features; 2016 wi->wi_atareq.error = ata_c.r_error; 2017 } 2018 } 2019 2020 bp->b_error = 0; 2021 biodone(bp); 2022 return; 2023 bad: 2024 bp->b_flags |= B_ERROR; 2025 bp->b_error = error; 2026 biodone(bp); 2027 } 2028
Indexes created Fri Sep 26 20:09:58 GMT 2025