wd.c revision 1.324
1 /* $NetBSD: wd.c,v 1.324 2006/05/18 19:42:09 bouyer 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 1.324 2006/05/18 19:42:09 bouyer 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 { "ST3160812A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160023A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160827A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 /* Attempt to catch all seagate drives larger than 200GB */ 249 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9]A*", 250 WD_QUIRK_FORCE_LBA48 }, 251 { NULL, 252 0 } 253 }; 254 255 static const struct wd_quirk * 256 wd_lookup_quirks(const char *name) 257 { 258 const struct wd_quirk *wdq; 259 const char *estr; 260 261 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 262 /* 263 * We only want exact matches (which include matches 264 * against globbing characters). 265 */ 266 if (pmatch(name, wdq->wdq_match, &estr) == 2) 267 return (wdq); 268 } 269 return (NULL); 270 } 271 272 int 273 wdprobe(struct device *parent, struct cfdata *match, void *aux) 274 { 275 struct ata_device *adev = aux; 276 277 if (adev == NULL) 278 return 0; 279 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 280 return 0; 281 282 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 283 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 284 return 0; 285 return 1; 286 } 287 288 void 289 wdattach(struct device *parent, struct device *self, void *aux) 290 { 291 struct wd_softc *wd = (void *)self; 292 struct ata_device *adev= aux; 293 int i, blank; 294 char tbuf[41], pbuf[9], c, *p, *q; 295 const struct wd_quirk *wdq; 296 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 297 298 callout_init(&wd->sc_restart_ch); 299 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 300 #ifdef WD_SOFTBADSECT 301 SLIST_INIT(&wd->sc_bslist); 302 #endif 303 wd->atabus = adev->adev_bustype; 304 wd->openings = adev->adev_openings; 305 wd->drvp = adev->adev_drv_data; 306 307 wd->drvp->drv_done = wddone; 308 wd->drvp->drv_softc = &wd->sc_dev; 309 310 aprint_naive("\n"); 311 312 /* read our drive info */ 313 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 314 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 315 return; 316 } 317 318 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 319 i < sizeof(wd->sc_params.atap_model); i++) { 320 c = *p++; 321 if (c == '\0') 322 break; 323 if (c != ' ') { 324 if (blank) { 325 *q++ = ' '; 326 blank = 0; 327 } 328 *q++ = c; 329 } else 330 blank = 1; 331 } 332 *q++ = '\0'; 333 334 aprint_normal(": <%s>\n", tbuf); 335 336 wdq = wd_lookup_quirks(tbuf); 337 if (wdq != NULL) 338 wd->sc_quirks = wdq->wdq_quirks; 339 340 if ((wd->sc_params.atap_multi & 0xff) > 1) { 341 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 342 } else { 343 wd->sc_multi = 1; 344 } 345 346 aprint_normal("%s: drive supports %d-sector PIO transfers,", 347 wd->sc_dev.dv_xname, wd->sc_multi); 348 349 /* 48-bit LBA addressing */ 350 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 351 wd->sc_flags |= WDF_LBA48; 352 353 /* Prior to ATA-4, LBA was optional. */ 354 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 355 wd->sc_flags |= WDF_LBA; 356 #if 0 357 /* ATA-4 requires LBA. */ 358 if (wd->sc_params.atap_ataversion != 0xffff && 359 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 360 wd->sc_flags |= WDF_LBA; 361 #endif 362 363 if ((wd->sc_flags & WDF_LBA48) != 0) { 364 aprint_normal(" LBA48 addressing\n"); 365 wd->sc_capacity = 366 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 367 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 368 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 369 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 370 } else if ((wd->sc_flags & WDF_LBA) != 0) { 371 aprint_normal(" LBA addressing\n"); 372 wd->sc_capacity = 373 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 374 wd->sc_params.atap_capacity[0]; 375 } else { 376 aprint_normal(" chs addressing\n"); 377 wd->sc_capacity = 378 wd->sc_params.atap_cylinders * 379 wd->sc_params.atap_heads * 380 wd->sc_params.atap_sectors; 381 } 382 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 383 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 384 "%d bytes/sect x %llu sectors\n", 385 self->dv_xname, pbuf, 386 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 387 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 388 wd->sc_params.atap_cylinders, 389 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 390 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 391 392 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 393 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 394 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 395 /* 396 * Initialize and attach the disk structure. 397 */ 398 wd->sc_dk.dk_driver = &wddkdriver; 399 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 400 disk_attach(&wd->sc_dk); 401 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 402 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 403 if (wd->sc_sdhook == NULL) 404 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 405 wd->sc_dev.dv_xname); 406 #if NRND > 0 407 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 408 RND_TYPE_DISK, 0); 409 #endif 410 411 /* Discover wedges on this disk. */ 412 dkwedge_discover(&wd->sc_dk); 413 } 414 415 int 416 wdactivate(struct device *self, enum devact act) 417 { 418 int rv = 0; 419 420 switch (act) { 421 case DVACT_ACTIVATE: 422 rv = EOPNOTSUPP; 423 break; 424 425 case DVACT_DEACTIVATE: 426 /* 427 * Nothing to do; we key off the device's DVF_ACTIVATE. 428 */ 429 break; 430 } 431 return (rv); 432 } 433 434 int 435 wddetach(struct device *self, int flags) 436 { 437 struct wd_softc *sc = (struct wd_softc *)self; 438 int s, bmaj, cmaj, i, mn; 439 440 /* locate the major number */ 441 bmaj = bdevsw_lookup_major(&wd_bdevsw); 442 cmaj = cdevsw_lookup_major(&wd_cdevsw); 443 444 /* Nuke the vnodes for any open instances. */ 445 for (i = 0; i < MAXPARTITIONS; i++) { 446 mn = WDMINOR(device_unit(self), i); 447 vdevgone(bmaj, mn, mn, VBLK); 448 vdevgone(cmaj, mn, mn, VCHR); 449 } 450 451 /* Delete all of our wedges. */ 452 dkwedge_delall(&sc->sc_dk); 453 454 s = splbio(); 455 456 /* Kill off any queued buffers. */ 457 bufq_drain(sc->sc_q); 458 459 bufq_free(sc->sc_q); 460 sc->atabus->ata_killpending(sc->drvp); 461 462 splx(s); 463 464 /* Detach disk. */ 465 disk_detach(&sc->sc_dk); 466 467 #ifdef WD_SOFTBADSECT 468 /* Clean out the bad sector list */ 469 while (!SLIST_EMPTY(&sc->sc_bslist)) { 470 void *head = SLIST_FIRST(&sc->sc_bslist); 471 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 472 free(head, M_TEMP); 473 } 474 sc->sc_bscount = 0; 475 #endif 476 477 /* Get rid of the shutdown hook. */ 478 if (sc->sc_sdhook != NULL) 479 shutdownhook_disestablish(sc->sc_sdhook); 480 481 #if NRND > 0 482 /* Unhook the entropy source. */ 483 rnd_detach_source(&sc->rnd_source); 484 #endif 485 486 sc->drvp->drive_flags = 0; /* no drive any more here */ 487 488 return (0); 489 } 490 491 /* 492 * Read/write routine for a buffer. Validates the arguments and schedules the 493 * transfer. Does not wait for the transfer to complete. 494 */ 495 void 496 wdstrategy(struct buf *bp) 497 { 498 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 499 struct disklabel *lp = wd->sc_dk.dk_label; 500 daddr_t blkno; 501 int s; 502 503 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 504 DEBUG_XFERS); 505 506 /* Valid request? */ 507 if (bp->b_blkno < 0 || 508 (bp->b_bcount % lp->d_secsize) != 0 || 509 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 510 bp->b_error = EINVAL; 511 goto bad; 512 } 513 514 /* If device invalidated (e.g. media change, door open), error. */ 515 if ((wd->sc_flags & WDF_LOADED) == 0) { 516 bp->b_error = EIO; 517 goto bad; 518 } 519 520 /* If it's a null transfer, return immediately. */ 521 if (bp->b_bcount == 0) 522 goto done; 523 524 /* 525 * Do bounds checking, adjust transfer. if error, process. 526 * If end of partition, just return. 527 */ 528 if (WDPART(bp->b_dev) == RAW_PART) { 529 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 530 wd->sc_capacity) <= 0) 531 goto done; 532 } else { 533 if (bounds_check_with_label(&wd->sc_dk, bp, 534 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 535 goto done; 536 } 537 538 /* 539 * Now convert the block number to absolute and put it in 540 * terms of the device's logical block size. 541 */ 542 if (lp->d_secsize >= DEV_BSIZE) 543 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 544 else 545 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 546 547 if (WDPART(bp->b_dev) != RAW_PART) 548 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 549 550 bp->b_rawblkno = blkno; 551 552 #ifdef WD_SOFTBADSECT 553 /* 554 * If the transfer about to be attempted contains only a block that 555 * is known to be bad then return an error for the transfer without 556 * even attempting to start a transfer up under the premis that we 557 * will just end up doing more retries for a transfer that will end 558 * up failing again. 559 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 560 */ 561 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 562 struct disk_badsectors *dbs; 563 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 564 565 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 566 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 567 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 568 bp->b_error = EIO; 569 goto bad; 570 } 571 } 572 #endif 573 574 /* Queue transfer on drive, activate drive and controller if idle. */ 575 s = splbio(); 576 BUFQ_PUT(wd->sc_q, bp); 577 wdstart(wd); 578 splx(s); 579 return; 580 bad: 581 bp->b_flags |= B_ERROR; 582 done: 583 /* Toss transfer; we're done early. */ 584 bp->b_resid = bp->b_bcount; 585 biodone(bp); 586 } 587 588 /* 589 * Queue a drive for I/O. 590 */ 591 void 592 wdstart(void *arg) 593 { 594 struct wd_softc *wd = arg; 595 struct buf *bp = NULL; 596 597 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 598 DEBUG_XFERS); 599 while (wd->openings > 0) { 600 601 /* Is there a buf for us ? */ 602 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 603 return; 604 605 /* 606 * Make the command. First lock the device 607 */ 608 wd->openings--; 609 610 wd->retries = 0; 611 __wdstart(wd, bp); 612 } 613 } 614 615 static void 616 wd_split_mod15_write(struct buf *bp) 617 { 618 struct buf *obp = bp->b_private; 619 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 620 621 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 622 /* 623 * Propagate the error. If this was the first half of 624 * the original transfer, make sure to account for that 625 * in the residual. 626 */ 627 if (bp->b_data == obp->b_data) 628 bp->b_resid += bp->b_bcount; 629 goto done; 630 } 631 632 /* 633 * If this was the second half of the transfer, we're all done! 634 */ 635 if (bp->b_data != obp->b_data) 636 goto done; 637 638 /* 639 * Advance the pointer to the second half and issue that command 640 * using the same opening. 641 */ 642 bp->b_flags = obp->b_flags | B_CALL; 643 bp->b_data += bp->b_bcount; 644 bp->b_blkno += (bp->b_bcount / 512); 645 bp->b_rawblkno += (bp->b_bcount / 512); 646 __wdstart(sc, bp); 647 return; 648 649 done: 650 obp->b_flags |= bp->b_flags & B_ERROR; 651 obp->b_error = bp->b_error; 652 obp->b_resid = bp->b_resid; 653 putiobuf(bp); 654 biodone(obp); 655 sc->openings++; 656 /* wddone() will call wdstart() */ 657 } 658 659 void 660 __wdstart(struct wd_softc *wd, struct buf *bp) 661 { 662 663 /* 664 * Deal with the "split mod15 write" quirk. We just divide the 665 * transfer in two, doing the first half and then then second half 666 * with the same command opening. 667 * 668 * Note we MUST do this here, because we can't let insertion 669 * into the bufq cause the transfers to be re-merged. 670 */ 671 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 672 (bp->b_flags & B_READ) == 0 && 673 bp->b_bcount > 512 && 674 ((bp->b_bcount / 512) % 15) == 1)) { 675 struct buf *nbp; 676 677 /* already at splbio */ 678 nbp = getiobuf_nowait(); 679 if (__predict_false(nbp == NULL)) { 680 /* No memory -- fail the iop. */ 681 bp->b_error = ENOMEM; 682 bp->b_flags |= B_ERROR; 683 bp->b_resid = bp->b_bcount; 684 biodone(bp); 685 wd->openings++; 686 return; 687 } 688 689 nbp->b_error = 0; 690 nbp->b_proc = bp->b_proc; 691 nbp->b_vp = NULLVP; 692 nbp->b_dev = bp->b_dev; 693 694 nbp->b_bcount = bp->b_bcount / 2; 695 nbp->b_bufsize = bp->b_bcount / 2; 696 nbp->b_data = bp->b_data; 697 698 nbp->b_blkno = bp->b_blkno; 699 nbp->b_rawblkno = bp->b_rawblkno; 700 701 nbp->b_flags = bp->b_flags | B_CALL; 702 nbp->b_iodone = wd_split_mod15_write; 703 704 /* Put ptr to orig buf in b_private and use new buf */ 705 nbp->b_private = bp; 706 707 BIO_COPYPRIO(nbp, bp); 708 709 bp = nbp; 710 } 711 712 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 713 wd->sc_wdc_bio.blkdone =0; 714 wd->sc_bp = bp; 715 /* 716 * If we're retrying, retry in single-sector mode. This will give us 717 * the sector number of the problem, and will eventually allow the 718 * transfer to succeed. 719 */ 720 if (wd->retries >= WDIORETRIES_SINGLE) 721 wd->sc_wdc_bio.flags = ATA_SINGLE; 722 else 723 wd->sc_wdc_bio.flags = 0; 724 if (wd->sc_flags & WDF_LBA48 && 725 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 726 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 727 wd->sc_wdc_bio.flags |= ATA_LBA48; 728 if (wd->sc_flags & WDF_LBA) 729 wd->sc_wdc_bio.flags |= ATA_LBA; 730 if (bp->b_flags & B_READ) 731 wd->sc_wdc_bio.flags |= ATA_READ; 732 wd->sc_wdc_bio.bcount = bp->b_bcount; 733 wd->sc_wdc_bio.databuf = bp->b_data; 734 /* Instrumentation. */ 735 disk_busy(&wd->sc_dk); 736 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 737 case ATACMD_TRY_AGAIN: 738 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 739 break; 740 case ATACMD_QUEUED: 741 case ATACMD_COMPLETE: 742 break; 743 default: 744 panic("__wdstart: bad return code from ata_bio()"); 745 } 746 } 747 748 void 749 wddone(void *v) 750 { 751 struct wd_softc *wd = v; 752 struct buf *bp = wd->sc_bp; 753 const char *errmsg; 754 int do_perror = 0; 755 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 756 DEBUG_XFERS); 757 758 if (bp == NULL) 759 return; 760 bp->b_resid = wd->sc_wdc_bio.bcount; 761 switch (wd->sc_wdc_bio.error) { 762 case ERR_DMA: 763 errmsg = "DMA error"; 764 goto retry; 765 case ERR_DF: 766 errmsg = "device fault"; 767 goto retry; 768 case TIMEOUT: 769 errmsg = "device timeout"; 770 goto retry; 771 case ERR_RESET: 772 errmsg = "channel reset"; 773 goto retry2; 774 case ERROR: 775 /* Don't care about media change bits */ 776 if (wd->sc_wdc_bio.r_error != 0 && 777 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 778 goto noerror; 779 errmsg = "error"; 780 do_perror = 1; 781 retry: /* Just reset and retry. Can we do more ? */ 782 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 783 retry2: 784 diskerr(bp, "wd", errmsg, LOG_PRINTF, 785 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 786 if (wd->retries < WDIORETRIES) 787 printf(", retrying\n"); 788 if (do_perror) 789 wdperror(wd); 790 if (wd->retries < WDIORETRIES) { 791 wd->retries++; 792 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 793 wdrestart, wd); 794 return; 795 } 796 printf("\n"); 797 798 #ifdef WD_SOFTBADSECT 799 /* 800 * Not all errors indicate a failed block but those that do, 801 * put the block on the bad-block list for the device. Only 802 * do this for reads because the drive should do it for writes, 803 * itself, according to Manuel. 804 */ 805 if ((bp->b_flags & B_READ) && 806 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 807 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 808 struct disk_badsectors *dbs; 809 810 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 811 dbs->dbs_min = bp->b_rawblkno; 812 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 813 microtime(&dbs->dbs_failedat); 814 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 815 wd->sc_bscount++; 816 } 817 #endif 818 bp->b_flags |= B_ERROR; 819 bp->b_error = EIO; 820 break; 821 case NOERROR: 822 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 823 printf("%s: soft error (corrected)\n", 824 wd->sc_dev.dv_xname); 825 break; 826 case ERR_NODEV: 827 bp->b_flags |= B_ERROR; 828 bp->b_error = EIO; 829 break; 830 } 831 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 832 (bp->b_flags & B_READ)); 833 #if NRND > 0 834 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 835 #endif 836 /* XXX Yuck, but we don't want to increment openings in this case */ 837 if (__predict_false((bp->b_flags & B_CALL) != 0 && 838 bp->b_iodone == wd_split_mod15_write)) 839 biodone(bp); 840 else { 841 biodone(bp); 842 wd->openings++; 843 } 844 wdstart(wd); 845 } 846 847 void 848 wdrestart(void *v) 849 { 850 struct wd_softc *wd = v; 851 struct buf *bp = wd->sc_bp; 852 int s; 853 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 854 DEBUG_XFERS); 855 856 s = splbio(); 857 __wdstart(v, bp); 858 splx(s); 859 } 860 861 int 862 wdread(dev_t dev, struct uio *uio, int flags) 863 { 864 865 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 866 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 867 } 868 869 int 870 wdwrite(dev_t dev, struct uio *uio, int flags) 871 { 872 873 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 874 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 875 } 876 877 int 878 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 879 { 880 struct wd_softc *wd; 881 int part, error; 882 883 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 884 wd = device_lookup(&wd_cd, WDUNIT(dev)); 885 if (wd == NULL) 886 return (ENXIO); 887 888 if (! device_is_active(&wd->sc_dev)) 889 return (ENODEV); 890 891 part = WDPART(dev); 892 893 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 894 return (error); 895 896 /* 897 * If there are wedges, and this is not RAW_PART, then we 898 * need to fail. 899 */ 900 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 901 error = EBUSY; 902 goto bad1; 903 } 904 905 /* 906 * If this is the first open of this device, add a reference 907 * to the adapter. 908 */ 909 if (wd->sc_dk.dk_openmask == 0 && 910 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 911 goto bad1; 912 913 if (wd->sc_dk.dk_openmask != 0) { 914 /* 915 * If any partition is open, but the disk has been invalidated, 916 * disallow further opens. 917 */ 918 if ((wd->sc_flags & WDF_LOADED) == 0) { 919 error = EIO; 920 goto bad2; 921 } 922 } else { 923 if ((wd->sc_flags & WDF_LOADED) == 0) { 924 wd->sc_flags |= WDF_LOADED; 925 926 /* Load the physical device parameters. */ 927 wd_get_params(wd, AT_WAIT, &wd->sc_params); 928 929 /* Load the partition info if not already loaded. */ 930 wdgetdisklabel(wd); 931 } 932 } 933 934 /* Check that the partition exists. */ 935 if (part != RAW_PART && 936 (part >= wd->sc_dk.dk_label->d_npartitions || 937 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 938 error = ENXIO; 939 goto bad2; 940 } 941 942 /* Insure only one open at a time. */ 943 switch (fmt) { 944 case S_IFCHR: 945 wd->sc_dk.dk_copenmask |= (1 << part); 946 break; 947 case S_IFBLK: 948 wd->sc_dk.dk_bopenmask |= (1 << part); 949 break; 950 } 951 wd->sc_dk.dk_openmask = 952 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 953 954 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 955 return 0; 956 957 bad2: 958 if (wd->sc_dk.dk_openmask == 0) 959 wd->atabus->ata_delref(wd->drvp); 960 bad1: 961 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 962 return error; 963 } 964 965 int 966 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 967 { 968 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 969 int part = WDPART(dev); 970 int error; 971 972 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 973 974 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 975 return error; 976 977 switch (fmt) { 978 case S_IFCHR: 979 wd->sc_dk.dk_copenmask &= ~(1 << part); 980 break; 981 case S_IFBLK: 982 wd->sc_dk.dk_bopenmask &= ~(1 << part); 983 break; 984 } 985 wd->sc_dk.dk_openmask = 986 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 987 988 if (wd->sc_dk.dk_openmask == 0) { 989 wd_flushcache(wd, AT_WAIT); 990 991 if (! (wd->sc_flags & WDF_KLABEL)) 992 wd->sc_flags &= ~WDF_LOADED; 993 994 wd->atabus->ata_delref(wd->drvp); 995 } 996 997 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 998 return 0; 999 } 1000 1001 void 1002 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1003 { 1004 1005 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1006 memset(lp, 0, sizeof(struct disklabel)); 1007 1008 lp->d_secsize = DEV_BSIZE; 1009 lp->d_ntracks = wd->sc_params.atap_heads; 1010 lp->d_nsectors = wd->sc_params.atap_sectors; 1011 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1012 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1013 wd->sc_params.atap_cylinders; 1014 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1015 1016 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1017 lp->d_type = DTYPE_ST506; 1018 else 1019 lp->d_type = DTYPE_ESDI; 1020 1021 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1022 strncpy(lp->d_packname, "fictitious", 16); 1023 if (wd->sc_capacity > UINT32_MAX) 1024 lp->d_secperunit = UINT32_MAX; 1025 else 1026 lp->d_secperunit = wd->sc_capacity; 1027 lp->d_rpm = 3600; 1028 lp->d_interleave = 1; 1029 lp->d_flags = 0; 1030 1031 lp->d_partitions[RAW_PART].p_offset = 0; 1032 lp->d_partitions[RAW_PART].p_size = 1033 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1034 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1035 lp->d_npartitions = RAW_PART + 1; 1036 1037 lp->d_magic = DISKMAGIC; 1038 lp->d_magic2 = DISKMAGIC; 1039 lp->d_checksum = dkcksum(lp); 1040 } 1041 1042 /* 1043 * Fabricate a default disk label, and try to read the correct one. 1044 */ 1045 void 1046 wdgetdisklabel(struct wd_softc *wd) 1047 { 1048 struct disklabel *lp = wd->sc_dk.dk_label; 1049 const char *errstring; 1050 int s; 1051 1052 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1053 1054 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1055 1056 wdgetdefaultlabel(wd, lp); 1057 1058 wd->sc_badsect[0] = -1; 1059 1060 if (wd->drvp->state > RESET) { 1061 s = splbio(); 1062 wd->drvp->drive_flags |= DRIVE_RESET; 1063 splx(s); 1064 } 1065 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1066 RAW_PART), wdstrategy, lp, 1067 wd->sc_dk.dk_cpulabel); 1068 if (errstring) { 1069 /* 1070 * This probably happened because the drive's default 1071 * geometry doesn't match the DOS geometry. We 1072 * assume the DOS geometry is now in the label and try 1073 * again. XXX This is a kluge. 1074 */ 1075 if (wd->drvp->state > RESET) { 1076 s = splbio(); 1077 wd->drvp->drive_flags |= DRIVE_RESET; 1078 splx(s); 1079 } 1080 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1081 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1082 } 1083 if (errstring) { 1084 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1085 return; 1086 } 1087 1088 if (wd->drvp->state > RESET) { 1089 s = splbio(); 1090 wd->drvp->drive_flags |= DRIVE_RESET; 1091 splx(s); 1092 } 1093 #ifdef HAS_BAD144_HANDLING 1094 if ((lp->d_flags & D_BADSECT) != 0) 1095 bad144intern(wd); 1096 #endif 1097 } 1098 1099 void 1100 wdperror(const struct wd_softc *wd) 1101 { 1102 static const char *const errstr0_3[] = {"address mark not found", 1103 "track 0 not found", "aborted command", "media change requested", 1104 "id not found", "media changed", "uncorrectable data error", 1105 "bad block detected"}; 1106 static const char *const errstr4_5[] = { 1107 "obsolete (address mark not found)", 1108 "no media/write protected", "aborted command", 1109 "media change requested", "id not found", "media changed", 1110 "uncorrectable data error", "interface CRC error"}; 1111 const char *const *errstr; 1112 int i; 1113 const char *sep = ""; 1114 1115 const char *devname = wd->sc_dev.dv_xname; 1116 struct ata_drive_datas *drvp = wd->drvp; 1117 int errno = wd->sc_wdc_bio.r_error; 1118 1119 if (drvp->ata_vers >= 4) 1120 errstr = errstr4_5; 1121 else 1122 errstr = errstr0_3; 1123 1124 printf("%s: (", devname); 1125 1126 if (errno == 0) 1127 printf("error not notified"); 1128 1129 for (i = 0; i < 8; i++) { 1130 if (errno & (1 << i)) { 1131 printf("%s%s", sep, errstr[i]); 1132 sep = ", "; 1133 } 1134 } 1135 printf(")\n"); 1136 } 1137 1138 int 1139 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct lwp *l) 1140 { 1141 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1142 int error = 0, s; 1143 #ifdef __HAVE_OLD_DISKLABEL 1144 struct disklabel *newlabel = NULL; 1145 #endif 1146 1147 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1148 1149 if ((wd->sc_flags & WDF_LOADED) == 0) 1150 return EIO; 1151 1152 switch (xfer) { 1153 #ifdef HAS_BAD144_HANDLING 1154 case DIOCSBAD: 1155 if ((flag & FWRITE) == 0) 1156 return EBADF; 1157 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1158 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1159 bad144intern(wd); 1160 return 0; 1161 #endif 1162 #ifdef WD_SOFTBADSECT 1163 case DIOCBSLIST : 1164 { 1165 u_int32_t count, missing, skip; 1166 struct disk_badsecinfo dbsi; 1167 struct disk_badsectors *dbs; 1168 size_t available; 1169 caddr_t laddr; 1170 1171 dbsi = *(struct disk_badsecinfo *)addr; 1172 missing = wd->sc_bscount; 1173 count = 0; 1174 available = dbsi.dbsi_bufsize; 1175 skip = dbsi.dbsi_skip; 1176 laddr = dbsi.dbsi_buffer; 1177 1178 /* 1179 * We start this loop with the expectation that all of the 1180 * entries will be missed and decrement this counter each 1181 * time we either skip over one (already copied out) or 1182 * we actually copy it back to user space. The structs 1183 * holding the bad sector information are copied directly 1184 * back to user space whilst the summary is returned via 1185 * the struct passed in via the ioctl. 1186 */ 1187 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1188 if (skip > 0) { 1189 missing--; 1190 skip--; 1191 continue; 1192 } 1193 if (available < sizeof(*dbs)) 1194 break; 1195 available -= sizeof(*dbs); 1196 copyout(dbs, laddr, sizeof(*dbs)); 1197 laddr += sizeof(*dbs); 1198 missing--; 1199 count++; 1200 } 1201 dbsi.dbsi_left = missing; 1202 dbsi.dbsi_copied = count; 1203 *(struct disk_badsecinfo *)addr = dbsi; 1204 return 0; 1205 } 1206 1207 case DIOCBSFLUSH : 1208 /* Clean out the bad sector list */ 1209 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1210 void *head = SLIST_FIRST(&wd->sc_bslist); 1211 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1212 free(head, M_TEMP); 1213 } 1214 wd->sc_bscount = 0; 1215 return 0; 1216 #endif 1217 case DIOCGDINFO: 1218 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1219 return 0; 1220 #ifdef __HAVE_OLD_DISKLABEL 1221 case ODIOCGDINFO: 1222 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1223 if (newlabel == NULL) 1224 return EIO; 1225 *newlabel = *(wd->sc_dk.dk_label); 1226 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1227 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1228 else 1229 error = ENOTTY; 1230 free(newlabel, M_TEMP); 1231 return error; 1232 #endif 1233 1234 case DIOCGPART: 1235 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1236 ((struct partinfo *)addr)->part = 1237 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1238 return 0; 1239 1240 case DIOCWDINFO: 1241 case DIOCSDINFO: 1242 #ifdef __HAVE_OLD_DISKLABEL 1243 case ODIOCWDINFO: 1244 case ODIOCSDINFO: 1245 #endif 1246 { 1247 struct disklabel *lp; 1248 1249 if ((flag & FWRITE) == 0) 1250 return EBADF; 1251 1252 #ifdef __HAVE_OLD_DISKLABEL 1253 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1254 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1255 if (newlabel == NULL) 1256 return EIO; 1257 memset(newlabel, 0, sizeof newlabel); 1258 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1259 lp = newlabel; 1260 } else 1261 #endif 1262 lp = (struct disklabel *)addr; 1263 1264 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1265 NULL)) != 0) 1266 goto bad; 1267 wd->sc_flags |= WDF_LABELLING; 1268 1269 error = setdisklabel(wd->sc_dk.dk_label, 1270 lp, /*wd->sc_dk.dk_openmask : */0, 1271 wd->sc_dk.dk_cpulabel); 1272 if (error == 0) { 1273 if (wd->drvp->state > RESET) { 1274 s = splbio(); 1275 wd->drvp->drive_flags |= DRIVE_RESET; 1276 splx(s); 1277 } 1278 if (xfer == DIOCWDINFO 1279 #ifdef __HAVE_OLD_DISKLABEL 1280 || xfer == ODIOCWDINFO 1281 #endif 1282 ) 1283 error = writedisklabel(WDLABELDEV(dev), 1284 wdstrategy, wd->sc_dk.dk_label, 1285 wd->sc_dk.dk_cpulabel); 1286 } 1287 1288 wd->sc_flags &= ~WDF_LABELLING; 1289 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1290 bad: 1291 #ifdef __HAVE_OLD_DISKLABEL 1292 if (newlabel != NULL) 1293 free(newlabel, M_TEMP); 1294 #endif 1295 return error; 1296 } 1297 1298 case DIOCKLABEL: 1299 if (*(int *)addr) 1300 wd->sc_flags |= WDF_KLABEL; 1301 else 1302 wd->sc_flags &= ~WDF_KLABEL; 1303 return 0; 1304 1305 case DIOCWLABEL: 1306 if ((flag & FWRITE) == 0) 1307 return EBADF; 1308 if (*(int *)addr) 1309 wd->sc_flags |= WDF_WLABEL; 1310 else 1311 wd->sc_flags &= ~WDF_WLABEL; 1312 return 0; 1313 1314 case DIOCGDEFLABEL: 1315 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1316 return 0; 1317 #ifdef __HAVE_OLD_DISKLABEL 1318 case ODIOCGDEFLABEL: 1319 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1320 if (newlabel == NULL) 1321 return EIO; 1322 wdgetdefaultlabel(wd, newlabel); 1323 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1324 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1325 else 1326 error = ENOTTY; 1327 free(newlabel, M_TEMP); 1328 return error; 1329 #endif 1330 1331 #ifdef notyet 1332 case DIOCWFORMAT: 1333 if ((flag & FWRITE) == 0) 1334 return EBADF; 1335 { 1336 register struct format_op *fop; 1337 struct iovec aiov; 1338 struct uio auio; 1339 1340 fop = (struct format_op *)addr; 1341 aiov.iov_base = fop->df_buf; 1342 aiov.iov_len = fop->df_count; 1343 auio.uio_iov = &aiov; 1344 auio.uio_iovcnt = 1; 1345 auio.uio_resid = fop->df_count; 1346 auio.uio_offset = 1347 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1348 auio.uio_vmspace = l->l_proc->p_vmspace; 1349 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1350 &auio); 1351 fop->df_count -= auio.uio_resid; 1352 fop->df_reg[0] = wdc->sc_status; 1353 fop->df_reg[1] = wdc->sc_error; 1354 return error; 1355 } 1356 #endif 1357 case DIOCGCACHE: 1358 return wd_getcache(wd, (int *)addr); 1359 1360 case DIOCSCACHE: 1361 return wd_setcache(wd, *(int *)addr); 1362 1363 case DIOCCACHESYNC: 1364 return wd_flushcache(wd, AT_WAIT); 1365 1366 case ATAIOCCOMMAND: 1367 /* 1368 * Make sure this command is (relatively) safe first 1369 */ 1370 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1371 (flag & FWRITE) == 0) 1372 return (EBADF); 1373 { 1374 struct wd_ioctl *wi; 1375 atareq_t *atareq = (atareq_t *) addr; 1376 int error1; 1377 1378 wi = wi_get(); 1379 wi->wi_softc = wd; 1380 wi->wi_atareq = *atareq; 1381 1382 if (atareq->datalen && atareq->flags & 1383 (ATACMD_READ | ATACMD_WRITE)) { 1384 wi->wi_iov.iov_base = atareq->databuf; 1385 wi->wi_iov.iov_len = atareq->datalen; 1386 wi->wi_uio.uio_iov = &wi->wi_iov; 1387 wi->wi_uio.uio_iovcnt = 1; 1388 wi->wi_uio.uio_resid = atareq->datalen; 1389 wi->wi_uio.uio_offset = 0; 1390 wi->wi_uio.uio_rw = 1391 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1392 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1393 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1394 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1395 minphys, &wi->wi_uio); 1396 } else { 1397 /* No need to call physio if we don't have any 1398 user data */ 1399 wi->wi_bp.b_flags = 0; 1400 wi->wi_bp.b_data = 0; 1401 wi->wi_bp.b_bcount = 0; 1402 wi->wi_bp.b_dev = 0; 1403 wi->wi_bp.b_proc = l->l_proc; 1404 wdioctlstrategy(&wi->wi_bp); 1405 error1 = wi->wi_bp.b_error; 1406 } 1407 *atareq = wi->wi_atareq; 1408 wi_free(wi); 1409 return(error1); 1410 } 1411 1412 case DIOCAWEDGE: 1413 { 1414 struct dkwedge_info *dkw = (void *) addr; 1415 1416 if ((flag & FWRITE) == 0) 1417 return (EBADF); 1418 1419 /* If the ioctl happens here, the parent is us. */ 1420 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1421 return (dkwedge_add(dkw)); 1422 } 1423 1424 case DIOCDWEDGE: 1425 { 1426 struct dkwedge_info *dkw = (void *) addr; 1427 1428 if ((flag & FWRITE) == 0) 1429 return (EBADF); 1430 1431 /* If the ioctl happens here, the parent is us. */ 1432 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1433 return (dkwedge_del(dkw)); 1434 } 1435 1436 case DIOCLWEDGES: 1437 { 1438 struct dkwedge_list *dkwl = (void *) addr; 1439 1440 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1441 } 1442 1443 case DIOCGSTRATEGY: 1444 { 1445 struct disk_strategy *dks = (void *)addr; 1446 1447 s = splbio(); 1448 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1449 sizeof(dks->dks_name)); 1450 splx(s); 1451 dks->dks_paramlen = 0; 1452 1453 return 0; 1454 } 1455 1456 case DIOCSSTRATEGY: 1457 { 1458 struct disk_strategy *dks = (void *)addr; 1459 struct bufq_state *new; 1460 struct bufq_state *old; 1461 1462 if ((flag & FWRITE) == 0) { 1463 return EBADF; 1464 } 1465 if (dks->dks_param != NULL) { 1466 return EINVAL; 1467 } 1468 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1469 error = bufq_alloc(&new, dks->dks_name, 1470 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1471 if (error) { 1472 return error; 1473 } 1474 s = splbio(); 1475 old = wd->sc_q; 1476 bufq_move(new, old); 1477 wd->sc_q = new; 1478 splx(s); 1479 bufq_free(old); 1480 1481 return 0; 1482 } 1483 1484 default: 1485 return ENOTTY; 1486 } 1487 1488 #ifdef DIAGNOSTIC 1489 panic("wdioctl: impossible"); 1490 #endif 1491 } 1492 1493 #ifdef B_FORMAT 1494 int 1495 wdformat(struct buf *bp) 1496 { 1497 1498 bp->b_flags |= B_FORMAT; 1499 return wdstrategy(bp); 1500 } 1501 #endif 1502 1503 int 1504 wdsize(dev_t dev) 1505 { 1506 struct wd_softc *wd; 1507 int part, omask; 1508 int size; 1509 1510 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1511 1512 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1513 if (wd == NULL) 1514 return (-1); 1515 1516 part = WDPART(dev); 1517 omask = wd->sc_dk.dk_openmask & (1 << part); 1518 1519 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1520 return (-1); 1521 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1522 size = -1; 1523 else 1524 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1525 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1526 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1527 return (-1); 1528 return (size); 1529 } 1530 1531 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1532 static int wddoingadump = 0; 1533 static int wddumprecalibrated = 0; 1534 1535 /* 1536 * Dump core after a system crash. 1537 */ 1538 int 1539 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1540 { 1541 struct wd_softc *wd; /* disk unit to do the I/O */ 1542 struct disklabel *lp; /* disk's disklabel */ 1543 int part, err; 1544 int nblks; /* total number of sectors left to write */ 1545 1546 /* Check if recursive dump; if so, punt. */ 1547 if (wddoingadump) 1548 return EFAULT; 1549 wddoingadump = 1; 1550 1551 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1552 if (wd == NULL) 1553 return (ENXIO); 1554 1555 part = WDPART(dev); 1556 1557 /* Convert to disk sectors. Request must be a multiple of size. */ 1558 lp = wd->sc_dk.dk_label; 1559 if ((size % lp->d_secsize) != 0) 1560 return EFAULT; 1561 nblks = size / lp->d_secsize; 1562 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1563 1564 /* Check transfer bounds against partition size. */ 1565 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1566 return EINVAL; 1567 1568 /* Offset block number to start of partition. */ 1569 blkno += lp->d_partitions[part].p_offset; 1570 1571 /* Recalibrate, if first dump transfer. */ 1572 if (wddumprecalibrated == 0) { 1573 wddumprecalibrated = 1; 1574 (*wd->atabus->ata_reset_drive)(wd->drvp, 1575 AT_POLL | AT_RST_EMERG); 1576 wd->drvp->state = RESET; 1577 } 1578 1579 wd->sc_bp = NULL; 1580 wd->sc_wdc_bio.blkno = blkno; 1581 wd->sc_wdc_bio.flags = ATA_POLL; 1582 if (wd->sc_flags & WDF_LBA48 && 1583 (blkno > LBA48_THRESHOLD || 1584 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1585 wd->sc_wdc_bio.flags |= ATA_LBA48; 1586 if (wd->sc_flags & WDF_LBA) 1587 wd->sc_wdc_bio.flags |= ATA_LBA; 1588 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1589 wd->sc_wdc_bio.databuf = va; 1590 #ifndef WD_DUMP_NOT_TRUSTED 1591 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1592 case ATACMD_TRY_AGAIN: 1593 panic("wddump: try again"); 1594 break; 1595 case ATACMD_QUEUED: 1596 panic("wddump: polled command has been queued"); 1597 break; 1598 case ATACMD_COMPLETE: 1599 break; 1600 } 1601 switch(wd->sc_wdc_bio.error) { 1602 case TIMEOUT: 1603 printf("wddump: device timed out"); 1604 err = EIO; 1605 break; 1606 case ERR_DF: 1607 printf("wddump: drive fault"); 1608 err = EIO; 1609 break; 1610 case ERR_DMA: 1611 printf("wddump: DMA error"); 1612 err = EIO; 1613 break; 1614 case ERROR: 1615 printf("wddump: "); 1616 wdperror(wd); 1617 err = EIO; 1618 break; 1619 case NOERROR: 1620 err = 0; 1621 break; 1622 default: 1623 panic("wddump: unknown error type"); 1624 } 1625 if (err != 0) { 1626 printf("\n"); 1627 return err; 1628 } 1629 #else /* WD_DUMP_NOT_TRUSTED */ 1630 /* Let's just talk about this first... */ 1631 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1632 unit, va, cylin, head, sector); 1633 delay(500 * 1000); /* half a second */ 1634 #endif 1635 1636 wddoingadump = 0; 1637 return 0; 1638 } 1639 1640 #ifdef HAS_BAD144_HANDLING 1641 /* 1642 * Internalize the bad sector table. 1643 */ 1644 void 1645 bad144intern(struct wd_softc *wd) 1646 { 1647 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1648 struct disklabel *lp = wd->sc_dk.dk_label; 1649 int i = 0; 1650 1651 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1652 1653 for (; i < NBT_BAD; i++) { 1654 if (bt->bt_bad[i].bt_cyl == 0xffff) 1655 break; 1656 wd->sc_badsect[i] = 1657 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1658 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1659 (bt->bt_bad[i].bt_trksec & 0xff); 1660 } 1661 for (; i < NBT_BAD+1; i++) 1662 wd->sc_badsect[i] = -1; 1663 } 1664 #endif 1665 1666 int 1667 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1668 { 1669 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1670 case CMD_AGAIN: 1671 return 1; 1672 case CMD_ERR: 1673 /* 1674 * We `know' there's a drive here; just assume it's old. 1675 * This geometry is only used to read the MBR and print a 1676 * (false) attach message. 1677 */ 1678 strncpy(params->atap_model, "ST506", 1679 sizeof params->atap_model); 1680 params->atap_config = ATA_CFG_FIXED; 1681 params->atap_cylinders = 1024; 1682 params->atap_heads = 8; 1683 params->atap_sectors = 17; 1684 params->atap_multi = 1; 1685 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1686 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1687 return 0; 1688 case CMD_OK: 1689 return 0; 1690 default: 1691 panic("wd_get_params: bad return code from ata_get_params"); 1692 /* NOTREACHED */ 1693 } 1694 } 1695 1696 int 1697 wd_getcache(struct wd_softc *wd, int *bitsp) 1698 { 1699 struct ataparams params; 1700 1701 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1702 return EIO; 1703 if (params.atap_cmd_set1 == 0x0000 || 1704 params.atap_cmd_set1 == 0xffff || 1705 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1706 *bitsp = 0; 1707 return 0; 1708 } 1709 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1710 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1711 *bitsp |= DKCACHE_WRITE; 1712 1713 return 0; 1714 } 1715 1716 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1717 1718 int 1719 wd_setcache(struct wd_softc *wd, int bits) 1720 { 1721 struct ataparams params; 1722 struct ata_command ata_c; 1723 1724 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1725 return EIO; 1726 1727 if (params.atap_cmd_set1 == 0x0000 || 1728 params.atap_cmd_set1 == 0xffff || 1729 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1730 return EOPNOTSUPP; 1731 1732 if ((bits & DKCACHE_READ) == 0 || 1733 (bits & DKCACHE_SAVE) != 0) 1734 return EOPNOTSUPP; 1735 1736 memset(&ata_c, 0, sizeof(struct ata_command)); 1737 ata_c.r_command = SET_FEATURES; 1738 ata_c.r_st_bmask = 0; 1739 ata_c.r_st_pmask = 0; 1740 ata_c.timeout = 30000; /* 30s timeout */ 1741 ata_c.flags = AT_WAIT; 1742 if (bits & DKCACHE_WRITE) 1743 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1744 else 1745 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1746 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1747 printf("%s: wd_setcache command not complete\n", 1748 wd->sc_dev.dv_xname); 1749 return EIO; 1750 } 1751 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1752 char sbuf[sizeof(at_errbits) + 64]; 1753 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1754 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1755 sbuf); 1756 return EIO; 1757 } 1758 return 0; 1759 } 1760 1761 int 1762 wd_standby(struct wd_softc *wd, int flags) 1763 { 1764 struct ata_command ata_c; 1765 1766 memset(&ata_c, 0, sizeof(struct ata_command)); 1767 ata_c.r_command = WDCC_STANDBY_IMMED; 1768 ata_c.r_st_bmask = WDCS_DRDY; 1769 ata_c.r_st_pmask = WDCS_DRDY; 1770 ata_c.flags = flags; 1771 ata_c.timeout = 30000; /* 30s timeout */ 1772 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1773 printf("%s: standby immediate command didn't complete\n", 1774 wd->sc_dev.dv_xname); 1775 return EIO; 1776 } 1777 if (ata_c.flags & AT_ERROR) { 1778 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1779 return ENODEV; 1780 } 1781 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1782 char sbuf[sizeof(at_errbits) + 64]; 1783 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1784 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1785 sbuf); 1786 return EIO; 1787 } 1788 return 0; 1789 } 1790 1791 int 1792 wd_flushcache(struct wd_softc *wd, int flags) 1793 { 1794 struct ata_command ata_c; 1795 1796 /* 1797 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1798 * only ATA-2 and still support it. 1799 */ 1800 if (wd->drvp->ata_vers < 4 && 1801 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1802 wd->sc_params.atap_cmd_set2 == 0xffff)) 1803 return ENODEV; 1804 memset(&ata_c, 0, sizeof(struct ata_command)); 1805 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1806 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1807 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1808 else 1809 ata_c.r_command = WDCC_FLUSHCACHE; 1810 ata_c.r_st_bmask = WDCS_DRDY; 1811 ata_c.r_st_pmask = WDCS_DRDY; 1812 ata_c.flags = flags; 1813 ata_c.timeout = 30000; /* 30s timeout */ 1814 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1815 printf("%s: flush cache command didn't complete\n", 1816 wd->sc_dev.dv_xname); 1817 return EIO; 1818 } 1819 if (ata_c.flags & AT_ERROR) { 1820 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1821 return ENODEV; 1822 } 1823 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1824 char sbuf[sizeof(at_errbits) + 64]; 1825 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1826 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1827 sbuf); 1828 return EIO; 1829 } 1830 return 0; 1831 } 1832 1833 void 1834 wd_shutdown(void *arg) 1835 { 1836 struct wd_softc *wd = arg; 1837 wd_flushcache(wd, AT_POLL); 1838 } 1839 1840 /* 1841 * Allocate space for a ioctl queue structure. Mostly taken from 1842 * scsipi_ioctl.c 1843 */ 1844 struct wd_ioctl * 1845 wi_get(void) 1846 { 1847 struct wd_ioctl *wi; 1848 int s; 1849 1850 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1851 simple_lock_init(&wi->wi_bp.b_interlock); 1852 s = splbio(); 1853 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1854 splx(s); 1855 return (wi); 1856 } 1857 1858 /* 1859 * Free an ioctl structure and remove it from our list 1860 */ 1861 1862 void 1863 wi_free(struct wd_ioctl *wi) 1864 { 1865 int s; 1866 1867 s = splbio(); 1868 LIST_REMOVE(wi, wi_list); 1869 splx(s); 1870 free(wi, M_TEMP); 1871 } 1872 1873 /* 1874 * Find a wd_ioctl structure based on the struct buf. 1875 */ 1876 1877 struct wd_ioctl * 1878 wi_find(struct buf *bp) 1879 { 1880 struct wd_ioctl *wi; 1881 int s; 1882 1883 s = splbio(); 1884 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1885 if (bp == &wi->wi_bp) 1886 break; 1887 splx(s); 1888 return (wi); 1889 } 1890 1891 /* 1892 * Ioctl pseudo strategy routine 1893 * 1894 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1895 * happens here is: 1896 * 1897 * - wdioctl() queues a wd_ioctl structure. 1898 * 1899 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1900 * user space I/O is required. If physio() is called, physio() eventually 1901 * calls wdioctlstrategy(). 1902 * 1903 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1904 * to perform the actual command 1905 * 1906 * The reason for the use of the pseudo strategy routine is because 1907 * when doing I/O to/from user space, physio _really_ wants to be in 1908 * the loop. We could put the entire buffer into the ioctl request 1909 * structure, but that won't scale if we want to do things like download 1910 * microcode. 1911 */ 1912 1913 void 1914 wdioctlstrategy(struct buf *bp) 1915 { 1916 struct wd_ioctl *wi; 1917 struct ata_command ata_c; 1918 int error = 0; 1919 1920 wi = wi_find(bp); 1921 if (wi == NULL) { 1922 printf("wdioctlstrategy: " 1923 "No matching ioctl request found in queue\n"); 1924 error = EINVAL; 1925 goto bad; 1926 } 1927 1928 memset(&ata_c, 0, sizeof(ata_c)); 1929 1930 /* 1931 * Abort if physio broke up the transfer 1932 */ 1933 1934 if (bp->b_bcount != wi->wi_atareq.datalen) { 1935 printf("physio split wd ioctl request... cannot proceed\n"); 1936 error = EIO; 1937 goto bad; 1938 } 1939 1940 /* 1941 * Abort if we didn't get a buffer size that was a multiple of 1942 * our sector size (or was larger than NBBY) 1943 */ 1944 1945 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1946 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1947 (1 << NBBY)) { 1948 error = EINVAL; 1949 goto bad; 1950 } 1951 1952 /* 1953 * Make sure a timeout was supplied in the ioctl request 1954 */ 1955 1956 if (wi->wi_atareq.timeout == 0) { 1957 error = EINVAL; 1958 goto bad; 1959 } 1960 1961 if (wi->wi_atareq.flags & ATACMD_READ) 1962 ata_c.flags |= AT_READ; 1963 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1964 ata_c.flags |= AT_WRITE; 1965 1966 if (wi->wi_atareq.flags & ATACMD_READREG) 1967 ata_c.flags |= AT_READREG; 1968 1969 ata_c.flags |= AT_WAIT; 1970 1971 ata_c.timeout = wi->wi_atareq.timeout; 1972 ata_c.r_command = wi->wi_atareq.command; 1973 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1974 ata_c.r_cyl = wi->wi_atareq.cylinder; 1975 ata_c.r_sector = wi->wi_atareq.sec_num; 1976 ata_c.r_count = wi->wi_atareq.sec_count; 1977 ata_c.r_features = wi->wi_atareq.features; 1978 ata_c.r_st_bmask = WDCS_DRDY; 1979 ata_c.r_st_pmask = WDCS_DRDY; 1980 ata_c.data = wi->wi_bp.b_data; 1981 ata_c.bcount = wi->wi_bp.b_bcount; 1982 1983 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1984 != ATACMD_COMPLETE) { 1985 wi->wi_atareq.retsts = ATACMD_ERROR; 1986 goto bad; 1987 } 1988 1989 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1990 if (ata_c.flags & AT_ERROR) { 1991 wi->wi_atareq.retsts = ATACMD_ERROR; 1992 wi->wi_atareq.error = ata_c.r_error; 1993 } else if (ata_c.flags & AT_DF) 1994 wi->wi_atareq.retsts = ATACMD_DF; 1995 else 1996 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1997 } else { 1998 wi->wi_atareq.retsts = ATACMD_OK; 1999 if (wi->wi_atareq.flags & ATACMD_READREG) { 2000 wi->wi_atareq.head = ata_c.r_head ; 2001 wi->wi_atareq.cylinder = ata_c.r_cyl; 2002 wi->wi_atareq.sec_num = ata_c.r_sector; 2003 wi->wi_atareq.sec_count = ata_c.r_count; 2004 wi->wi_atareq.features = ata_c.r_features; 2005 wi->wi_atareq.error = ata_c.r_error; 2006 } 2007 } 2008 2009 bp->b_error = 0; 2010 biodone(bp); 2011 return; 2012 bad: 2013 bp->b_flags |= B_ERROR; 2014 bp->b_error = error; 2015 biodone(bp); 2016 } 2017
Indexes created Sun Sep 28 12:09:53 GMT 2025