wd.c revision 1.315.2.3
1 /* $NetBSD: wd.c,v 1.315.2.3 2006/02/05 11:34:49 yamt 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 1.315.2.3 2006/02/05 11:34:49 yamt 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 /* 209 * Quirk table for IDE drives. Put more-specific matches first, since 210 * a simple globbing routine is used for matching. 211 */ 212 static const struct wd_quirk { 213 const char *wdq_match; /* inquiry pattern to match */ 214 int wdq_quirks; /* drive quirks */ 215 } wd_quirk_table[] = { 216 /* 217 * Some Seagate S-ATA drives have a PHY which can get confused 218 * with the way data is packetized by some S-ATA controllers. 219 * 220 * The work-around is to split in two any write transfer whose 221 * sector count % 15 == 1 (assuming 512 byte sectors). 222 * 223 * XXX This is an incomplete list. There are at least a couple 224 * XXX more model numbers. If you have trouble with such transfers 225 * XXX (8K is the most common) on Seagate S-ATA drives, please 226 * XXX notify thorpej (at) NetBSD.org. 227 */ 228 { "ST3120023AS", 229 WD_QUIRK_SPLIT_MOD15_WRITE }, 230 { "ST380023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 233 /* 234 * These seagate drives seems to have issue addressing sector 0xfffffff 235 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 236 * LBA48 237 * Note that we can't just change the code to always use LBA48 for 238 * sector 0xfffffff, because this would break valid and working 239 * setups using LBA48 drives on non-LBA48-capable controllers 240 * (and it's hard to get a list of such controllers) 241 */ 242 { "ST3160023A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160827A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 /* Attempt to catch all seagate drives larger than 200GB */ 247 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9]A*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { NULL, 250 0 } 251 }; 252 253 static const struct wd_quirk * 254 wd_lookup_quirks(const char *name) 255 { 256 const struct wd_quirk *wdq; 257 const char *estr; 258 259 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 260 /* 261 * We only want exact matches (which include matches 262 * against globbing characters). 263 */ 264 if (pmatch(name, wdq->wdq_match, &estr) == 2) 265 return (wdq); 266 } 267 return (NULL); 268 } 269 270 int 271 wdprobe(struct device *parent, struct cfdata *match, void *aux) 272 { 273 struct ata_device *adev = aux; 274 275 if (adev == NULL) 276 return 0; 277 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 278 return 0; 279 280 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 281 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 282 return 0; 283 return 1; 284 } 285 286 void 287 wdattach(struct device *parent, struct device *self, void *aux) 288 { 289 struct wd_softc *wd = (void *)self; 290 struct ata_device *adev= aux; 291 int i, blank; 292 char tbuf[41], pbuf[9], c, *p, *q; 293 const struct wd_quirk *wdq; 294 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 295 296 callout_init(&wd->sc_restart_ch); 297 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 298 #ifdef WD_SOFTBADSECT 299 SLIST_INIT(&wd->sc_bslist); 300 #endif 301 wd->atabus = adev->adev_bustype; 302 wd->openings = adev->adev_openings; 303 wd->drvp = adev->adev_drv_data; 304 305 wd->drvp->drv_done = wddone; 306 wd->drvp->drv_softc = &wd->sc_dev; 307 308 aprint_naive("\n"); 309 310 /* read our drive info */ 311 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 312 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 313 return; 314 } 315 316 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 317 i < sizeof(wd->sc_params.atap_model); i++) { 318 c = *p++; 319 if (c == '\0') 320 break; 321 if (c != ' ') { 322 if (blank) { 323 *q++ = ' '; 324 blank = 0; 325 } 326 *q++ = c; 327 } else 328 blank = 1; 329 } 330 *q++ = '\0'; 331 332 aprint_normal(": <%s>\n", tbuf); 333 334 wdq = wd_lookup_quirks(tbuf); 335 if (wdq != NULL) 336 wd->sc_quirks = wdq->wdq_quirks; 337 338 if ((wd->sc_params.atap_multi & 0xff) > 1) { 339 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 340 } else { 341 wd->sc_multi = 1; 342 } 343 344 aprint_normal("%s: drive supports %d-sector PIO transfers,", 345 wd->sc_dev.dv_xname, wd->sc_multi); 346 347 /* 48-bit LBA addressing */ 348 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 349 wd->sc_flags |= WDF_LBA48; 350 351 /* Prior to ATA-4, LBA was optional. */ 352 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 353 wd->sc_flags |= WDF_LBA; 354 #if 0 355 /* ATA-4 requires LBA. */ 356 if (wd->sc_params.atap_ataversion != 0xffff && 357 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 358 wd->sc_flags |= WDF_LBA; 359 #endif 360 361 if ((wd->sc_flags & WDF_LBA48) != 0) { 362 aprint_normal(" LBA48 addressing\n"); 363 wd->sc_capacity = 364 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 365 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 366 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 367 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 368 } else if ((wd->sc_flags & WDF_LBA) != 0) { 369 aprint_normal(" LBA addressing\n"); 370 wd->sc_capacity = 371 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 372 wd->sc_params.atap_capacity[0]; 373 } else { 374 aprint_normal(" chs addressing\n"); 375 wd->sc_capacity = 376 wd->sc_params.atap_cylinders * 377 wd->sc_params.atap_heads * 378 wd->sc_params.atap_sectors; 379 } 380 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 381 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 382 "%d bytes/sect x %llu sectors\n", 383 self->dv_xname, pbuf, 384 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 385 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 386 wd->sc_params.atap_cylinders, 387 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 388 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 389 390 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 391 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 392 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 393 /* 394 * Initialize and attach the disk structure. 395 */ 396 wd->sc_dk.dk_driver = &wddkdriver; 397 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 398 disk_attach(&wd->sc_dk); 399 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 400 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 401 if (wd->sc_sdhook == NULL) 402 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 403 wd->sc_dev.dv_xname); 404 #if NRND > 0 405 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 406 RND_TYPE_DISK, 0); 407 #endif 408 409 /* Discover wedges on this disk. */ 410 dkwedge_discover(&wd->sc_dk); 411 } 412 413 int 414 wdactivate(struct device *self, enum devact act) 415 { 416 int rv = 0; 417 418 switch (act) { 419 case DVACT_ACTIVATE: 420 rv = EOPNOTSUPP; 421 break; 422 423 case DVACT_DEACTIVATE: 424 /* 425 * Nothing to do; we key off the device's DVF_ACTIVATE. 426 */ 427 break; 428 } 429 return (rv); 430 } 431 432 int 433 wddetach(struct device *self, int flags) 434 { 435 struct wd_softc *sc = (struct wd_softc *)self; 436 int s, bmaj, cmaj, i, mn; 437 438 /* locate the major number */ 439 bmaj = bdevsw_lookup_major(&wd_bdevsw); 440 cmaj = cdevsw_lookup_major(&wd_cdevsw); 441 442 /* Nuke the vnodes for any open instances. */ 443 for (i = 0; i < MAXPARTITIONS; i++) { 444 mn = WDMINOR(self->dv_unit, i); 445 vdevgone(bmaj, mn, mn, VBLK); 446 vdevgone(cmaj, mn, mn, VCHR); 447 } 448 449 /* Delete all of our wedges. */ 450 dkwedge_delall(&sc->sc_dk); 451 452 s = splbio(); 453 454 /* Kill off any queued buffers. */ 455 bufq_drain(sc->sc_q); 456 457 bufq_free(sc->sc_q); 458 sc->atabus->ata_killpending(sc->drvp); 459 460 splx(s); 461 462 /* Detach disk. */ 463 disk_detach(&sc->sc_dk); 464 465 #ifdef WD_SOFTBADSECT 466 /* Clean out the bad sector list */ 467 while (!SLIST_EMPTY(&sc->sc_bslist)) { 468 void *head = SLIST_FIRST(&sc->sc_bslist); 469 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 470 free(head, M_TEMP); 471 } 472 sc->sc_bscount = 0; 473 #endif 474 475 /* Get rid of the shutdown hook. */ 476 if (sc->sc_sdhook != NULL) 477 shutdownhook_disestablish(sc->sc_sdhook); 478 479 #if NRND > 0 480 /* Unhook the entropy source. */ 481 rnd_detach_source(&sc->rnd_source); 482 #endif 483 484 sc->drvp->drive_flags = 0; /* no drive any more here */ 485 486 return (0); 487 } 488 489 /* 490 * Read/write routine for a buffer. Validates the arguments and schedules the 491 * transfer. Does not wait for the transfer to complete. 492 */ 493 void 494 wdstrategy(struct buf *bp) 495 { 496 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 497 struct disklabel *lp = wd->sc_dk.dk_label; 498 daddr_t blkno; 499 int s; 500 501 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 502 DEBUG_XFERS); 503 504 /* Valid request? */ 505 if (bp->b_blkno < 0 || 506 (bp->b_bcount % lp->d_secsize) != 0 || 507 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 508 bp->b_error = EINVAL; 509 goto bad; 510 } 511 512 /* If device invalidated (e.g. media change, door open), error. */ 513 if ((wd->sc_flags & WDF_LOADED) == 0) { 514 bp->b_error = EIO; 515 goto bad; 516 } 517 518 /* If it's a null transfer, return immediately. */ 519 if (bp->b_bcount == 0) 520 goto done; 521 522 /* 523 * Do bounds checking, adjust transfer. if error, process. 524 * If end of partition, just return. 525 */ 526 if (WDPART(bp->b_dev) == RAW_PART) { 527 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 528 wd->sc_capacity) <= 0) 529 goto done; 530 } else { 531 if (bounds_check_with_label(&wd->sc_dk, bp, 532 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 533 goto done; 534 } 535 536 /* 537 * Now convert the block number to absolute and put it in 538 * terms of the device's logical block size. 539 */ 540 if (lp->d_secsize >= DEV_BSIZE) 541 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 542 else 543 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 544 545 if (WDPART(bp->b_dev) != RAW_PART) 546 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 547 548 bp->b_rawblkno = blkno; 549 550 #ifdef WD_SOFTBADSECT 551 /* 552 * If the transfer about to be attempted contains only a block that 553 * is known to be bad then return an error for the transfer without 554 * even attempting to start a transfer up under the premis that we 555 * will just end up doing more retries for a transfer that will end 556 * up failing again. 557 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 558 */ 559 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 560 struct disk_badsectors *dbs; 561 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 562 563 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 564 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 565 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 566 bp->b_error = EIO; 567 goto bad; 568 } 569 } 570 #endif 571 572 /* Queue transfer on drive, activate drive and controller if idle. */ 573 s = splbio(); 574 BUFQ_PUT(wd->sc_q, bp); 575 wdstart(wd); 576 splx(s); 577 return; 578 bad: 579 bp->b_flags |= B_ERROR; 580 done: 581 /* Toss transfer; we're done early. */ 582 bp->b_resid = bp->b_bcount; 583 biodone(bp); 584 } 585 586 /* 587 * Queue a drive for I/O. 588 */ 589 void 590 wdstart(void *arg) 591 { 592 struct wd_softc *wd = arg; 593 struct buf *bp = NULL; 594 595 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 596 DEBUG_XFERS); 597 while (wd->openings > 0) { 598 599 /* Is there a buf for us ? */ 600 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 601 return; 602 603 /* 604 * Make the command. First lock the device 605 */ 606 wd->openings--; 607 608 wd->retries = 0; 609 __wdstart(wd, bp); 610 } 611 } 612 613 static void 614 wd_split_mod15_write(struct buf *bp) 615 { 616 struct buf *obp = bp->b_private; 617 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 618 619 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 620 /* 621 * Propagate the error. If this was the first half of 622 * the original transfer, make sure to account for that 623 * in the residual. 624 */ 625 if (bp->b_data == obp->b_data) 626 bp->b_resid += bp->b_bcount; 627 goto done; 628 } 629 630 /* 631 * If this was the second half of the transfer, we're all done! 632 */ 633 if (bp->b_data != obp->b_data) 634 goto done; 635 636 /* 637 * Advance the pointer to the second half and issue that command 638 * using the same opening. 639 */ 640 bp->b_flags = obp->b_flags | B_CALL; 641 bp->b_data += bp->b_bcount; 642 bp->b_blkno += (bp->b_bcount / 512); 643 bp->b_rawblkno += (bp->b_bcount / 512); 644 __wdstart(sc, bp); 645 return; 646 647 done: 648 obp->b_flags |= bp->b_flags & B_ERROR; 649 obp->b_error = bp->b_error; 650 obp->b_resid = bp->b_resid; 651 putiobuf(bp); 652 biodone(obp); 653 sc->openings++; 654 /* wddone() will call wdstart() */ 655 } 656 657 void 658 __wdstart(struct wd_softc *wd, struct buf *bp) 659 { 660 661 /* 662 * Deal with the "split mod15 write" quirk. We just divide the 663 * transfer in two, doing the first half and then then second half 664 * with the same command opening. 665 * 666 * Note we MUST do this here, because we can't let insertion 667 * into the bufq cause the transfers to be re-merged. 668 */ 669 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 670 (bp->b_flags & B_READ) == 0 && 671 bp->b_bcount > 512 && 672 ((bp->b_bcount / 512) % 15) == 1)) { 673 struct buf *nbp; 674 675 /* already at splbio */ 676 nbp = getiobuf_nowait(); 677 if (__predict_false(nbp == NULL)) { 678 /* No memory -- fail the iop. */ 679 bp->b_error = ENOMEM; 680 bp->b_flags |= B_ERROR; 681 bp->b_resid = bp->b_bcount; 682 biodone(bp); 683 wd->openings++; 684 return; 685 } 686 687 nbp->b_error = 0; 688 nbp->b_proc = bp->b_proc; 689 nbp->b_vp = NULLVP; 690 nbp->b_dev = bp->b_dev; 691 692 nbp->b_bcount = bp->b_bcount / 2; 693 nbp->b_bufsize = bp->b_bcount / 2; 694 nbp->b_data = bp->b_data; 695 696 nbp->b_blkno = bp->b_blkno; 697 nbp->b_rawblkno = bp->b_rawblkno; 698 699 nbp->b_flags = bp->b_flags | B_CALL; 700 nbp->b_iodone = wd_split_mod15_write; 701 702 /* Put ptr to orig buf in b_private and use new buf */ 703 nbp->b_private = bp; 704 705 BIO_COPYPRIO(nbp, bp); 706 707 bp = nbp; 708 } 709 710 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 711 wd->sc_wdc_bio.blkdone =0; 712 wd->sc_bp = bp; 713 /* 714 * If we're retrying, retry in single-sector mode. This will give us 715 * the sector number of the problem, and will eventually allow the 716 * transfer to succeed. 717 */ 718 if (wd->retries >= WDIORETRIES_SINGLE) 719 wd->sc_wdc_bio.flags = ATA_SINGLE; 720 else 721 wd->sc_wdc_bio.flags = 0; 722 if (wd->sc_flags & WDF_LBA48 && 723 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 724 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 725 wd->sc_wdc_bio.flags |= ATA_LBA48; 726 if (wd->sc_flags & WDF_LBA) 727 wd->sc_wdc_bio.flags |= ATA_LBA; 728 if (bp->b_flags & B_READ) 729 wd->sc_wdc_bio.flags |= ATA_READ; 730 wd->sc_wdc_bio.bcount = bp->b_bcount; 731 wd->sc_wdc_bio.databuf = bp->b_data; 732 /* Instrumentation. */ 733 disk_busy(&wd->sc_dk); 734 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 735 case ATACMD_TRY_AGAIN: 736 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 737 break; 738 case ATACMD_QUEUED: 739 case ATACMD_COMPLETE: 740 break; 741 default: 742 panic("__wdstart: bad return code from ata_bio()"); 743 } 744 } 745 746 void 747 wddone(void *v) 748 { 749 struct wd_softc *wd = v; 750 struct buf *bp = wd->sc_bp; 751 const char *errmsg; 752 int do_perror = 0; 753 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 754 DEBUG_XFERS); 755 756 if (bp == NULL) 757 return; 758 bp->b_resid = wd->sc_wdc_bio.bcount; 759 switch (wd->sc_wdc_bio.error) { 760 case ERR_DMA: 761 errmsg = "DMA error"; 762 goto retry; 763 case ERR_DF: 764 errmsg = "device fault"; 765 goto retry; 766 case TIMEOUT: 767 errmsg = "device timeout"; 768 goto retry; 769 case ERR_RESET: 770 errmsg = "channel reset"; 771 goto retry2; 772 case ERROR: 773 /* Don't care about media change bits */ 774 if (wd->sc_wdc_bio.r_error != 0 && 775 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 776 goto noerror; 777 errmsg = "error"; 778 do_perror = 1; 779 retry: /* Just reset and retry. Can we do more ? */ 780 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 781 retry2: 782 diskerr(bp, "wd", errmsg, LOG_PRINTF, 783 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 784 if (wd->retries < WDIORETRIES) 785 printf(", retrying\n"); 786 if (do_perror) 787 wdperror(wd); 788 if (wd->retries < WDIORETRIES) { 789 wd->retries++; 790 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 791 wdrestart, wd); 792 return; 793 } 794 printf("\n"); 795 796 #ifdef WD_SOFTBADSECT 797 /* 798 * Not all errors indicate a failed block but those that do, 799 * put the block on the bad-block list for the device. Only 800 * do this for reads because the drive should do it for writes, 801 * itself, according to Manuel. 802 */ 803 if ((bp->b_flags & B_READ) && 804 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 805 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 806 struct disk_badsectors *dbs; 807 808 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 809 dbs->dbs_min = bp->b_rawblkno; 810 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 811 microtime(&dbs->dbs_failedat); 812 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 813 wd->sc_bscount++; 814 } 815 #endif 816 bp->b_flags |= B_ERROR; 817 bp->b_error = EIO; 818 break; 819 case NOERROR: 820 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 821 printf("%s: soft error (corrected)\n", 822 wd->sc_dev.dv_xname); 823 break; 824 case ERR_NODEV: 825 bp->b_flags |= B_ERROR; 826 bp->b_error = EIO; 827 break; 828 } 829 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 830 (bp->b_flags & B_READ)); 831 #if NRND > 0 832 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 833 #endif 834 /* XXX Yuck, but we don't want to increment openings in this case */ 835 if (__predict_false((bp->b_flags & B_CALL) != 0 && 836 bp->b_iodone == wd_split_mod15_write)) 837 biodone(bp); 838 else { 839 biodone(bp); 840 wd->openings++; 841 } 842 wdstart(wd); 843 } 844 845 void 846 wdrestart(void *v) 847 { 848 struct wd_softc *wd = v; 849 struct buf *bp = wd->sc_bp; 850 int s; 851 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 852 DEBUG_XFERS); 853 854 s = splbio(); 855 __wdstart(v, bp); 856 splx(s); 857 } 858 859 int 860 wdread(dev_t dev, struct uio *uio, int flags) 861 { 862 863 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 864 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 865 } 866 867 int 868 wdwrite(dev_t dev, struct uio *uio, int flags) 869 { 870 871 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 872 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 873 } 874 875 int 876 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 877 { 878 struct wd_softc *wd; 879 int part, error; 880 881 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 882 wd = device_lookup(&wd_cd, WDUNIT(dev)); 883 if (wd == NULL) 884 return (ENXIO); 885 886 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 887 return (ENODEV); 888 889 part = WDPART(dev); 890 891 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 892 return (error); 893 894 /* 895 * If there are wedges, and this is not RAW_PART, then we 896 * need to fail. 897 */ 898 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 899 error = EBUSY; 900 goto bad1; 901 } 902 903 /* 904 * If this is the first open of this device, add a reference 905 * to the adapter. 906 */ 907 if (wd->sc_dk.dk_openmask == 0 && 908 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 909 goto bad1; 910 911 if (wd->sc_dk.dk_openmask != 0) { 912 /* 913 * If any partition is open, but the disk has been invalidated, 914 * disallow further opens. 915 */ 916 if ((wd->sc_flags & WDF_LOADED) == 0) { 917 error = EIO; 918 goto bad2; 919 } 920 } else { 921 if ((wd->sc_flags & WDF_LOADED) == 0) { 922 wd->sc_flags |= WDF_LOADED; 923 924 /* Load the physical device parameters. */ 925 wd_get_params(wd, AT_WAIT, &wd->sc_params); 926 927 /* Load the partition info if not already loaded. */ 928 wdgetdisklabel(wd); 929 } 930 } 931 932 /* Check that the partition exists. */ 933 if (part != RAW_PART && 934 (part >= wd->sc_dk.dk_label->d_npartitions || 935 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 936 error = ENXIO; 937 goto bad2; 938 } 939 940 /* Insure only one open at a time. */ 941 switch (fmt) { 942 case S_IFCHR: 943 wd->sc_dk.dk_copenmask |= (1 << part); 944 break; 945 case S_IFBLK: 946 wd->sc_dk.dk_bopenmask |= (1 << part); 947 break; 948 } 949 wd->sc_dk.dk_openmask = 950 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 951 952 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 953 return 0; 954 955 bad2: 956 if (wd->sc_dk.dk_openmask == 0) 957 wd->atabus->ata_delref(wd->drvp); 958 bad1: 959 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 960 return error; 961 } 962 963 int 964 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 965 { 966 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 967 int part = WDPART(dev); 968 int error; 969 970 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 971 972 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 973 return error; 974 975 switch (fmt) { 976 case S_IFCHR: 977 wd->sc_dk.dk_copenmask &= ~(1 << part); 978 break; 979 case S_IFBLK: 980 wd->sc_dk.dk_bopenmask &= ~(1 << part); 981 break; 982 } 983 wd->sc_dk.dk_openmask = 984 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 985 986 if (wd->sc_dk.dk_openmask == 0) { 987 wd_flushcache(wd, AT_WAIT); 988 989 if (! (wd->sc_flags & WDF_KLABEL)) 990 wd->sc_flags &= ~WDF_LOADED; 991 992 wd->atabus->ata_delref(wd->drvp); 993 } 994 995 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 996 return 0; 997 } 998 999 void 1000 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1001 { 1002 1003 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1004 memset(lp, 0, sizeof(struct disklabel)); 1005 1006 lp->d_secsize = DEV_BSIZE; 1007 lp->d_ntracks = wd->sc_params.atap_heads; 1008 lp->d_nsectors = wd->sc_params.atap_sectors; 1009 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1010 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1011 wd->sc_params.atap_cylinders; 1012 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1013 1014 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1015 lp->d_type = DTYPE_ST506; 1016 else 1017 lp->d_type = DTYPE_ESDI; 1018 1019 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1020 strncpy(lp->d_packname, "fictitious", 16); 1021 if (wd->sc_capacity > UINT32_MAX) 1022 lp->d_secperunit = UINT32_MAX; 1023 else 1024 lp->d_secperunit = wd->sc_capacity; 1025 lp->d_rpm = 3600; 1026 lp->d_interleave = 1; 1027 lp->d_flags = 0; 1028 1029 lp->d_partitions[RAW_PART].p_offset = 0; 1030 lp->d_partitions[RAW_PART].p_size = 1031 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1032 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1033 lp->d_npartitions = RAW_PART + 1; 1034 1035 lp->d_magic = DISKMAGIC; 1036 lp->d_magic2 = DISKMAGIC; 1037 lp->d_checksum = dkcksum(lp); 1038 } 1039 1040 /* 1041 * Fabricate a default disk label, and try to read the correct one. 1042 */ 1043 void 1044 wdgetdisklabel(struct wd_softc *wd) 1045 { 1046 struct disklabel *lp = wd->sc_dk.dk_label; 1047 const char *errstring; 1048 int s; 1049 1050 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1051 1052 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1053 1054 wdgetdefaultlabel(wd, lp); 1055 1056 wd->sc_badsect[0] = -1; 1057 1058 if (wd->drvp->state > RESET) { 1059 s = splbio(); 1060 wd->drvp->drive_flags |= DRIVE_RESET; 1061 splx(s); 1062 } 1063 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1064 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1065 if (errstring) { 1066 /* 1067 * This probably happened because the drive's default 1068 * geometry doesn't match the DOS geometry. We 1069 * assume the DOS geometry is now in the label and try 1070 * again. XXX This is a kluge. 1071 */ 1072 if (wd->drvp->state > RESET) { 1073 s = splbio(); 1074 wd->drvp->drive_flags |= DRIVE_RESET; 1075 splx(s); 1076 } 1077 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1078 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1079 } 1080 if (errstring) { 1081 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1082 return; 1083 } 1084 1085 if (wd->drvp->state > RESET) { 1086 s = splbio(); 1087 wd->drvp->drive_flags |= DRIVE_RESET; 1088 splx(s); 1089 } 1090 #ifdef HAS_BAD144_HANDLING 1091 if ((lp->d_flags & D_BADSECT) != 0) 1092 bad144intern(wd); 1093 #endif 1094 } 1095 1096 void 1097 wdperror(const struct wd_softc *wd) 1098 { 1099 static const char *const errstr0_3[] = {"address mark not found", 1100 "track 0 not found", "aborted command", "media change requested", 1101 "id not found", "media changed", "uncorrectable data error", 1102 "bad block detected"}; 1103 static const char *const errstr4_5[] = { 1104 "obsolete (address mark not found)", 1105 "no media/write protected", "aborted command", 1106 "media change requested", "id not found", "media changed", 1107 "uncorrectable data error", "interface CRC error"}; 1108 const char *const *errstr; 1109 int i; 1110 const char *sep = ""; 1111 1112 const char *devname = wd->sc_dev.dv_xname; 1113 struct ata_drive_datas *drvp = wd->drvp; 1114 int errno = wd->sc_wdc_bio.r_error; 1115 1116 if (drvp->ata_vers >= 4) 1117 errstr = errstr4_5; 1118 else 1119 errstr = errstr0_3; 1120 1121 printf("%s: (", devname); 1122 1123 if (errno == 0) 1124 printf("error not notified"); 1125 1126 for (i = 0; i < 8; i++) { 1127 if (errno & (1 << i)) { 1128 printf("%s%s", sep, errstr[i]); 1129 sep = ", "; 1130 } 1131 } 1132 printf(")\n"); 1133 } 1134 1135 int 1136 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct lwp *l) 1137 { 1138 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1139 int error = 0, s; 1140 #ifdef __HAVE_OLD_DISKLABEL 1141 struct disklabel *newlabel = NULL; 1142 #endif 1143 1144 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1145 1146 if ((wd->sc_flags & WDF_LOADED) == 0) 1147 return EIO; 1148 1149 switch (xfer) { 1150 #ifdef HAS_BAD144_HANDLING 1151 case DIOCSBAD: 1152 if ((flag & FWRITE) == 0) 1153 return EBADF; 1154 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1155 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1156 bad144intern(wd); 1157 return 0; 1158 #endif 1159 #ifdef WD_SOFTBADSECT 1160 case DIOCBSLIST : 1161 { 1162 u_int32_t count, missing, skip; 1163 struct disk_badsecinfo dbsi; 1164 struct disk_badsectors *dbs; 1165 size_t available; 1166 caddr_t laddr; 1167 1168 dbsi = *(struct disk_badsecinfo *)addr; 1169 missing = wd->sc_bscount; 1170 count = 0; 1171 available = dbsi.dbsi_bufsize; 1172 skip = dbsi.dbsi_skip; 1173 laddr = dbsi.dbsi_buffer; 1174 1175 /* 1176 * We start this loop with the expectation that all of the 1177 * entries will be missed and decrement this counter each 1178 * time we either skip over one (already copied out) or 1179 * we actually copy it back to user space. The structs 1180 * holding the bad sector information are copied directly 1181 * back to user space whilst the summary is returned via 1182 * the struct passed in via the ioctl. 1183 */ 1184 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1185 if (skip > 0) { 1186 missing--; 1187 skip--; 1188 continue; 1189 } 1190 if (available < sizeof(*dbs)) 1191 break; 1192 available -= sizeof(*dbs); 1193 copyout(dbs, laddr, sizeof(*dbs)); 1194 laddr += sizeof(*dbs); 1195 missing--; 1196 count++; 1197 } 1198 dbsi.dbsi_left = missing; 1199 dbsi.dbsi_copied = count; 1200 *(struct disk_badsecinfo *)addr = dbsi; 1201 return 0; 1202 } 1203 1204 case DIOCBSFLUSH : 1205 /* Clean out the bad sector list */ 1206 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1207 void *head = SLIST_FIRST(&wd->sc_bslist); 1208 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1209 free(head, M_TEMP); 1210 } 1211 wd->sc_bscount = 0; 1212 return 0; 1213 #endif 1214 case DIOCGDINFO: 1215 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1216 return 0; 1217 #ifdef __HAVE_OLD_DISKLABEL 1218 case ODIOCGDINFO: 1219 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1220 if (newlabel == NULL) 1221 return EIO; 1222 *newlabel = *(wd->sc_dk.dk_label); 1223 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1224 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1225 else 1226 error = ENOTTY; 1227 free(newlabel, M_TEMP); 1228 return error; 1229 #endif 1230 1231 case DIOCGPART: 1232 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1233 ((struct partinfo *)addr)->part = 1234 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1235 return 0; 1236 1237 case DIOCWDINFO: 1238 case DIOCSDINFO: 1239 #ifdef __HAVE_OLD_DISKLABEL 1240 case ODIOCWDINFO: 1241 case ODIOCSDINFO: 1242 #endif 1243 { 1244 struct disklabel *lp; 1245 1246 if ((flag & FWRITE) == 0) 1247 return EBADF; 1248 1249 #ifdef __HAVE_OLD_DISKLABEL 1250 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1251 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1252 if (newlabel == NULL) 1253 return EIO; 1254 memset(newlabel, 0, sizeof newlabel); 1255 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1256 lp = newlabel; 1257 } else 1258 #endif 1259 lp = (struct disklabel *)addr; 1260 1261 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1262 NULL)) != 0) 1263 goto bad; 1264 wd->sc_flags |= WDF_LABELLING; 1265 1266 error = setdisklabel(wd->sc_dk.dk_label, 1267 lp, /*wd->sc_dk.dk_openmask : */0, 1268 wd->sc_dk.dk_cpulabel); 1269 if (error == 0) { 1270 if (wd->drvp->state > RESET) { 1271 s = splbio(); 1272 wd->drvp->drive_flags |= DRIVE_RESET; 1273 splx(s); 1274 } 1275 if (xfer == DIOCWDINFO 1276 #ifdef __HAVE_OLD_DISKLABEL 1277 || xfer == ODIOCWDINFO 1278 #endif 1279 ) 1280 error = writedisklabel(WDLABELDEV(dev), 1281 wdstrategy, wd->sc_dk.dk_label, 1282 wd->sc_dk.dk_cpulabel); 1283 } 1284 1285 wd->sc_flags &= ~WDF_LABELLING; 1286 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1287 bad: 1288 #ifdef __HAVE_OLD_DISKLABEL 1289 if (newlabel != NULL) 1290 free(newlabel, M_TEMP); 1291 #endif 1292 return error; 1293 } 1294 1295 case DIOCKLABEL: 1296 if (*(int *)addr) 1297 wd->sc_flags |= WDF_KLABEL; 1298 else 1299 wd->sc_flags &= ~WDF_KLABEL; 1300 return 0; 1301 1302 case DIOCWLABEL: 1303 if ((flag & FWRITE) == 0) 1304 return EBADF; 1305 if (*(int *)addr) 1306 wd->sc_flags |= WDF_WLABEL; 1307 else 1308 wd->sc_flags &= ~WDF_WLABEL; 1309 return 0; 1310 1311 case DIOCGDEFLABEL: 1312 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1313 return 0; 1314 #ifdef __HAVE_OLD_DISKLABEL 1315 case ODIOCGDEFLABEL: 1316 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1317 if (newlabel == NULL) 1318 return EIO; 1319 wdgetdefaultlabel(wd, newlabel); 1320 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1321 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1322 else 1323 error = ENOTTY; 1324 free(newlabel, M_TEMP); 1325 return error; 1326 #endif 1327 1328 #ifdef notyet 1329 case DIOCWFORMAT: 1330 if ((flag & FWRITE) == 0) 1331 return EBADF; 1332 { 1333 register struct format_op *fop; 1334 struct iovec aiov; 1335 struct uio auio; 1336 1337 fop = (struct format_op *)addr; 1338 aiov.iov_base = fop->df_buf; 1339 aiov.iov_len = fop->df_count; 1340 auio.uio_iov = &aiov; 1341 auio.uio_iovcnt = 1; 1342 auio.uio_resid = fop->df_count; 1343 auio.uio_offset = 1344 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1345 auio.uio_vmspace = l->l_proc->p_vmspace; 1346 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1347 &auio); 1348 fop->df_count -= auio.uio_resid; 1349 fop->df_reg[0] = wdc->sc_status; 1350 fop->df_reg[1] = wdc->sc_error; 1351 return error; 1352 } 1353 #endif 1354 case DIOCGCACHE: 1355 return wd_getcache(wd, (int *)addr); 1356 1357 case DIOCSCACHE: 1358 return wd_setcache(wd, *(int *)addr); 1359 1360 case DIOCCACHESYNC: 1361 return wd_flushcache(wd, AT_WAIT); 1362 1363 case ATAIOCCOMMAND: 1364 /* 1365 * Make sure this command is (relatively) safe first 1366 */ 1367 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1368 (flag & FWRITE) == 0) 1369 return (EBADF); 1370 { 1371 struct wd_ioctl *wi; 1372 atareq_t *atareq = (atareq_t *) addr; 1373 int error1; 1374 1375 wi = wi_get(); 1376 wi->wi_softc = wd; 1377 wi->wi_atareq = *atareq; 1378 1379 if (atareq->datalen && atareq->flags & 1380 (ATACMD_READ | ATACMD_WRITE)) { 1381 wi->wi_iov.iov_base = atareq->databuf; 1382 wi->wi_iov.iov_len = atareq->datalen; 1383 wi->wi_uio.uio_iov = &wi->wi_iov; 1384 wi->wi_uio.uio_iovcnt = 1; 1385 wi->wi_uio.uio_resid = atareq->datalen; 1386 wi->wi_uio.uio_offset = 0; 1387 wi->wi_uio.uio_rw = 1388 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1389 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1390 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1391 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1392 minphys, &wi->wi_uio); 1393 } else { 1394 /* No need to call physio if we don't have any 1395 user data */ 1396 wi->wi_bp.b_flags = 0; 1397 wi->wi_bp.b_data = 0; 1398 wi->wi_bp.b_bcount = 0; 1399 wi->wi_bp.b_dev = 0; 1400 wi->wi_bp.b_proc = l->l_proc; 1401 wdioctlstrategy(&wi->wi_bp); 1402 error1 = wi->wi_bp.b_error; 1403 } 1404 *atareq = wi->wi_atareq; 1405 wi_free(wi); 1406 return(error1); 1407 } 1408 1409 case DIOCAWEDGE: 1410 { 1411 struct dkwedge_info *dkw = (void *) addr; 1412 1413 if ((flag & FWRITE) == 0) 1414 return (EBADF); 1415 1416 /* If the ioctl happens here, the parent is us. */ 1417 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1418 return (dkwedge_add(dkw)); 1419 } 1420 1421 case DIOCDWEDGE: 1422 { 1423 struct dkwedge_info *dkw = (void *) addr; 1424 1425 if ((flag & FWRITE) == 0) 1426 return (EBADF); 1427 1428 /* If the ioctl happens here, the parent is us. */ 1429 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1430 return (dkwedge_del(dkw)); 1431 } 1432 1433 case DIOCLWEDGES: 1434 { 1435 struct dkwedge_list *dkwl = (void *) addr; 1436 1437 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1438 } 1439 1440 case DIOCGSTRATEGY: 1441 { 1442 struct disk_strategy *dks = (void *)addr; 1443 1444 s = splbio(); 1445 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1446 sizeof(dks->dks_name)); 1447 splx(s); 1448 dks->dks_paramlen = 0; 1449 1450 return 0; 1451 } 1452 1453 case DIOCSSTRATEGY: 1454 { 1455 struct disk_strategy *dks = (void *)addr; 1456 struct bufq_state *new; 1457 struct bufq_state *old; 1458 1459 if ((flag & FWRITE) == 0) { 1460 return EBADF; 1461 } 1462 if (dks->dks_param != NULL) { 1463 return EINVAL; 1464 } 1465 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1466 error = bufq_alloc(&new, dks->dks_name, 1467 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1468 if (error) { 1469 return error; 1470 } 1471 s = splbio(); 1472 old = wd->sc_q; 1473 bufq_move(new, old); 1474 wd->sc_q = new; 1475 splx(s); 1476 bufq_free(old); 1477 1478 return 0; 1479 } 1480 1481 default: 1482 return ENOTTY; 1483 } 1484 1485 #ifdef DIAGNOSTIC 1486 panic("wdioctl: impossible"); 1487 #endif 1488 } 1489 1490 #ifdef B_FORMAT 1491 int 1492 wdformat(struct buf *bp) 1493 { 1494 1495 bp->b_flags |= B_FORMAT; 1496 return wdstrategy(bp); 1497 } 1498 #endif 1499 1500 int 1501 wdsize(dev_t dev) 1502 { 1503 struct wd_softc *wd; 1504 int part, omask; 1505 int size; 1506 1507 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1508 1509 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1510 if (wd == NULL) 1511 return (-1); 1512 1513 part = WDPART(dev); 1514 omask = wd->sc_dk.dk_openmask & (1 << part); 1515 1516 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1517 return (-1); 1518 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1519 size = -1; 1520 else 1521 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1522 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1523 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1524 return (-1); 1525 return (size); 1526 } 1527 1528 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1529 static int wddoingadump = 0; 1530 static int wddumprecalibrated = 0; 1531 1532 /* 1533 * Dump core after a system crash. 1534 */ 1535 int 1536 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1537 { 1538 struct wd_softc *wd; /* disk unit to do the I/O */ 1539 struct disklabel *lp; /* disk's disklabel */ 1540 int part, err; 1541 int nblks; /* total number of sectors left to write */ 1542 1543 /* Check if recursive dump; if so, punt. */ 1544 if (wddoingadump) 1545 return EFAULT; 1546 wddoingadump = 1; 1547 1548 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1549 if (wd == NULL) 1550 return (ENXIO); 1551 1552 part = WDPART(dev); 1553 1554 /* Convert to disk sectors. Request must be a multiple of size. */ 1555 lp = wd->sc_dk.dk_label; 1556 if ((size % lp->d_secsize) != 0) 1557 return EFAULT; 1558 nblks = size / lp->d_secsize; 1559 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1560 1561 /* Check transfer bounds against partition size. */ 1562 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1563 return EINVAL; 1564 1565 /* Offset block number to start of partition. */ 1566 blkno += lp->d_partitions[part].p_offset; 1567 1568 /* Recalibrate, if first dump transfer. */ 1569 if (wddumprecalibrated == 0) { 1570 wddumprecalibrated = 1; 1571 (*wd->atabus->ata_reset_drive)(wd->drvp, 1572 AT_POLL | AT_RST_EMERG); 1573 wd->drvp->state = RESET; 1574 } 1575 1576 wd->sc_bp = NULL; 1577 wd->sc_wdc_bio.blkno = blkno; 1578 wd->sc_wdc_bio.flags = ATA_POLL; 1579 if (wd->sc_flags & WDF_LBA48 && 1580 (blkno > LBA48_THRESHOLD || 1581 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1582 wd->sc_wdc_bio.flags |= ATA_LBA48; 1583 if (wd->sc_flags & WDF_LBA) 1584 wd->sc_wdc_bio.flags |= ATA_LBA; 1585 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1586 wd->sc_wdc_bio.databuf = va; 1587 #ifndef WD_DUMP_NOT_TRUSTED 1588 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1589 case ATACMD_TRY_AGAIN: 1590 panic("wddump: try again"); 1591 break; 1592 case ATACMD_QUEUED: 1593 panic("wddump: polled command has been queued"); 1594 break; 1595 case ATACMD_COMPLETE: 1596 break; 1597 } 1598 switch(wd->sc_wdc_bio.error) { 1599 case TIMEOUT: 1600 printf("wddump: device timed out"); 1601 err = EIO; 1602 break; 1603 case ERR_DF: 1604 printf("wddump: drive fault"); 1605 err = EIO; 1606 break; 1607 case ERR_DMA: 1608 printf("wddump: DMA error"); 1609 err = EIO; 1610 break; 1611 case ERROR: 1612 printf("wddump: "); 1613 wdperror(wd); 1614 err = EIO; 1615 break; 1616 case NOERROR: 1617 err = 0; 1618 break; 1619 default: 1620 panic("wddump: unknown error type"); 1621 } 1622 if (err != 0) { 1623 printf("\n"); 1624 return err; 1625 } 1626 #else /* WD_DUMP_NOT_TRUSTED */ 1627 /* Let's just talk about this first... */ 1628 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1629 unit, va, cylin, head, sector); 1630 delay(500 * 1000); /* half a second */ 1631 #endif 1632 1633 wddoingadump = 0; 1634 return 0; 1635 } 1636 1637 #ifdef HAS_BAD144_HANDLING 1638 /* 1639 * Internalize the bad sector table. 1640 */ 1641 void 1642 bad144intern(struct wd_softc *wd) 1643 { 1644 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1645 struct disklabel *lp = wd->sc_dk.dk_label; 1646 int i = 0; 1647 1648 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1649 1650 for (; i < NBT_BAD; i++) { 1651 if (bt->bt_bad[i].bt_cyl == 0xffff) 1652 break; 1653 wd->sc_badsect[i] = 1654 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1655 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1656 (bt->bt_bad[i].bt_trksec & 0xff); 1657 } 1658 for (; i < NBT_BAD+1; i++) 1659 wd->sc_badsect[i] = -1; 1660 } 1661 #endif 1662 1663 int 1664 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1665 { 1666 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1667 case CMD_AGAIN: 1668 return 1; 1669 case CMD_ERR: 1670 /* 1671 * We `know' there's a drive here; just assume it's old. 1672 * This geometry is only used to read the MBR and print a 1673 * (false) attach message. 1674 */ 1675 strncpy(params->atap_model, "ST506", 1676 sizeof params->atap_model); 1677 params->atap_config = ATA_CFG_FIXED; 1678 params->atap_cylinders = 1024; 1679 params->atap_heads = 8; 1680 params->atap_sectors = 17; 1681 params->atap_multi = 1; 1682 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1683 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1684 return 0; 1685 case CMD_OK: 1686 return 0; 1687 default: 1688 panic("wd_get_params: bad return code from ata_get_params"); 1689 /* NOTREACHED */ 1690 } 1691 } 1692 1693 int 1694 wd_getcache(struct wd_softc *wd, int *bitsp) 1695 { 1696 struct ataparams params; 1697 1698 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1699 return EIO; 1700 if (params.atap_cmd_set1 == 0x0000 || 1701 params.atap_cmd_set1 == 0xffff || 1702 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1703 *bitsp = 0; 1704 return 0; 1705 } 1706 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1707 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1708 *bitsp |= DKCACHE_WRITE; 1709 1710 return 0; 1711 } 1712 1713 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1714 1715 int 1716 wd_setcache(struct wd_softc *wd, int bits) 1717 { 1718 struct ataparams params; 1719 struct ata_command ata_c; 1720 1721 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1722 return EIO; 1723 1724 if (params.atap_cmd_set1 == 0x0000 || 1725 params.atap_cmd_set1 == 0xffff || 1726 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1727 return EOPNOTSUPP; 1728 1729 if ((bits & DKCACHE_READ) == 0 || 1730 (bits & DKCACHE_SAVE) != 0) 1731 return EOPNOTSUPP; 1732 1733 memset(&ata_c, 0, sizeof(struct ata_command)); 1734 ata_c.r_command = SET_FEATURES; 1735 ata_c.r_st_bmask = 0; 1736 ata_c.r_st_pmask = 0; 1737 ata_c.timeout = 30000; /* 30s timeout */ 1738 ata_c.flags = AT_WAIT; 1739 if (bits & DKCACHE_WRITE) 1740 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1741 else 1742 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1743 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1744 printf("%s: wd_setcache command not complete\n", 1745 wd->sc_dev.dv_xname); 1746 return EIO; 1747 } 1748 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1749 char sbuf[sizeof(at_errbits) + 64]; 1750 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1751 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1752 sbuf); 1753 return EIO; 1754 } 1755 return 0; 1756 } 1757 1758 int 1759 wd_standby(struct wd_softc *wd, int flags) 1760 { 1761 struct ata_command ata_c; 1762 1763 memset(&ata_c, 0, sizeof(struct ata_command)); 1764 ata_c.r_command = WDCC_STANDBY_IMMED; 1765 ata_c.r_st_bmask = WDCS_DRDY; 1766 ata_c.r_st_pmask = WDCS_DRDY; 1767 ata_c.flags = flags; 1768 ata_c.timeout = 30000; /* 30s timeout */ 1769 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1770 printf("%s: standby immediate command didn't complete\n", 1771 wd->sc_dev.dv_xname); 1772 return EIO; 1773 } 1774 if (ata_c.flags & AT_ERROR) { 1775 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1776 return ENODEV; 1777 } 1778 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1779 char sbuf[sizeof(at_errbits) + 64]; 1780 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1781 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1782 sbuf); 1783 return EIO; 1784 } 1785 return 0; 1786 } 1787 1788 int 1789 wd_flushcache(struct wd_softc *wd, int flags) 1790 { 1791 struct ata_command ata_c; 1792 1793 /* 1794 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1795 * only ATA-2 and still support it. 1796 */ 1797 if (wd->drvp->ata_vers < 4 && 1798 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1799 wd->sc_params.atap_cmd_set2 == 0xffff)) 1800 return ENODEV; 1801 memset(&ata_c, 0, sizeof(struct ata_command)); 1802 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1803 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1804 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1805 else 1806 ata_c.r_command = WDCC_FLUSHCACHE; 1807 ata_c.r_st_bmask = WDCS_DRDY; 1808 ata_c.r_st_pmask = WDCS_DRDY; 1809 ata_c.flags = flags; 1810 ata_c.timeout = 30000; /* 30s timeout */ 1811 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1812 printf("%s: flush cache command didn't complete\n", 1813 wd->sc_dev.dv_xname); 1814 return EIO; 1815 } 1816 if (ata_c.flags & AT_ERROR) { 1817 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1818 return ENODEV; 1819 } 1820 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1821 char sbuf[sizeof(at_errbits) + 64]; 1822 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1823 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1824 sbuf); 1825 return EIO; 1826 } 1827 return 0; 1828 } 1829 1830 void 1831 wd_shutdown(void *arg) 1832 { 1833 struct wd_softc *wd = arg; 1834 wd_flushcache(wd, AT_POLL); 1835 } 1836 1837 /* 1838 * Allocate space for a ioctl queue structure. Mostly taken from 1839 * scsipi_ioctl.c 1840 */ 1841 struct wd_ioctl * 1842 wi_get(void) 1843 { 1844 struct wd_ioctl *wi; 1845 int s; 1846 1847 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1848 simple_lock_init(&wi->wi_bp.b_interlock); 1849 s = splbio(); 1850 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1851 splx(s); 1852 return (wi); 1853 } 1854 1855 /* 1856 * Free an ioctl structure and remove it from our list 1857 */ 1858 1859 void 1860 wi_free(struct wd_ioctl *wi) 1861 { 1862 int s; 1863 1864 s = splbio(); 1865 LIST_REMOVE(wi, wi_list); 1866 splx(s); 1867 free(wi, M_TEMP); 1868 } 1869 1870 /* 1871 * Find a wd_ioctl structure based on the struct buf. 1872 */ 1873 1874 struct wd_ioctl * 1875 wi_find(struct buf *bp) 1876 { 1877 struct wd_ioctl *wi; 1878 int s; 1879 1880 s = splbio(); 1881 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1882 if (bp == &wi->wi_bp) 1883 break; 1884 splx(s); 1885 return (wi); 1886 } 1887 1888 /* 1889 * Ioctl pseudo strategy routine 1890 * 1891 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1892 * happens here is: 1893 * 1894 * - wdioctl() queues a wd_ioctl structure. 1895 * 1896 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1897 * user space I/O is required. If physio() is called, physio() eventually 1898 * calls wdioctlstrategy(). 1899 * 1900 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1901 * to perform the actual command 1902 * 1903 * The reason for the use of the pseudo strategy routine is because 1904 * when doing I/O to/from user space, physio _really_ wants to be in 1905 * the loop. We could put the entire buffer into the ioctl request 1906 * structure, but that won't scale if we want to do things like download 1907 * microcode. 1908 */ 1909 1910 void 1911 wdioctlstrategy(struct buf *bp) 1912 { 1913 struct wd_ioctl *wi; 1914 struct ata_command ata_c; 1915 int error = 0; 1916 1917 wi = wi_find(bp); 1918 if (wi == NULL) { 1919 printf("wdioctlstrategy: " 1920 "No matching ioctl request found in queue\n"); 1921 error = EINVAL; 1922 goto bad; 1923 } 1924 1925 memset(&ata_c, 0, sizeof(ata_c)); 1926 1927 /* 1928 * Abort if physio broke up the transfer 1929 */ 1930 1931 if (bp->b_bcount != wi->wi_atareq.datalen) { 1932 printf("physio split wd ioctl request... cannot proceed\n"); 1933 error = EIO; 1934 goto bad; 1935 } 1936 1937 /* 1938 * Abort if we didn't get a buffer size that was a multiple of 1939 * our sector size (or was larger than NBBY) 1940 */ 1941 1942 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1943 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1944 (1 << NBBY)) { 1945 error = EINVAL; 1946 goto bad; 1947 } 1948 1949 /* 1950 * Make sure a timeout was supplied in the ioctl request 1951 */ 1952 1953 if (wi->wi_atareq.timeout == 0) { 1954 error = EINVAL; 1955 goto bad; 1956 } 1957 1958 if (wi->wi_atareq.flags & ATACMD_READ) 1959 ata_c.flags |= AT_READ; 1960 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1961 ata_c.flags |= AT_WRITE; 1962 1963 if (wi->wi_atareq.flags & ATACMD_READREG) 1964 ata_c.flags |= AT_READREG; 1965 1966 ata_c.flags |= AT_WAIT; 1967 1968 ata_c.timeout = wi->wi_atareq.timeout; 1969 ata_c.r_command = wi->wi_atareq.command; 1970 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1971 ata_c.r_cyl = wi->wi_atareq.cylinder; 1972 ata_c.r_sector = wi->wi_atareq.sec_num; 1973 ata_c.r_count = wi->wi_atareq.sec_count; 1974 ata_c.r_features = wi->wi_atareq.features; 1975 ata_c.r_st_bmask = WDCS_DRDY; 1976 ata_c.r_st_pmask = WDCS_DRDY; 1977 ata_c.data = wi->wi_bp.b_data; 1978 ata_c.bcount = wi->wi_bp.b_bcount; 1979 1980 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1981 != ATACMD_COMPLETE) { 1982 wi->wi_atareq.retsts = ATACMD_ERROR; 1983 goto bad; 1984 } 1985 1986 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1987 if (ata_c.flags & AT_ERROR) { 1988 wi->wi_atareq.retsts = ATACMD_ERROR; 1989 wi->wi_atareq.error = ata_c.r_error; 1990 } else if (ata_c.flags & AT_DF) 1991 wi->wi_atareq.retsts = ATACMD_DF; 1992 else 1993 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1994 } else { 1995 wi->wi_atareq.retsts = ATACMD_OK; 1996 if (wi->wi_atareq.flags & ATACMD_READREG) { 1997 wi->wi_atareq.head = ata_c.r_head ; 1998 wi->wi_atareq.cylinder = ata_c.r_cyl; 1999 wi->wi_atareq.sec_num = ata_c.r_sector; 2000 wi->wi_atareq.sec_count = ata_c.r_count; 2001 wi->wi_atareq.features = ata_c.r_features; 2002 wi->wi_atareq.error = ata_c.r_error; 2003 } 2004 } 2005 2006 bp->b_error = 0; 2007 biodone(bp); 2008 return; 2009 bad: 2010 bp->b_flags |= B_ERROR; 2011 bp->b_error = error; 2012 biodone(bp); 2013 } 2014
Indexes created Sun Oct 19 16:10:00 GMT 2025