wd.c revision 1.386
1 /* $NetBSD: wd.c,v 1.386 2011/02/10 05:07:46 enami 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /*- 28 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Charles M. Hannum and by Onno van der Linden. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.386 2011/02/10 05:07:46 enami Exp $"); 58 59 #include "opt_ata.h" 60 61 #include "rnd.h" 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/conf.h> 67 #include <sys/file.h> 68 #include <sys/stat.h> 69 #include <sys/ioctl.h> 70 #include <sys/buf.h> 71 #include <sys/bufq.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/syslog.h> 78 #include <sys/proc.h> 79 #include <sys/reboot.h> 80 #include <sys/vnode.h> 81 #if NRND > 0 82 #include <sys/rnd.h> 83 #endif 84 85 #include <sys/intr.h> 86 #include <sys/bus.h> 87 88 #include <dev/ata/atareg.h> 89 #include <dev/ata/atavar.h> 90 #include <dev/ata/wdvar.h> 91 #include <dev/ic/wdcreg.h> 92 #include <sys/ataio.h> 93 #include "locators.h" 94 95 #include <prop/proplib.h> 96 97 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 98 #define WDIORETRIES 5 /* number of retries before giving up */ 99 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 100 101 #define WDUNIT(dev) DISKUNIT(dev) 102 #define WDPART(dev) DISKPART(dev) 103 #define WDMINOR(unit, part) DISKMINOR(unit, part) 104 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 105 106 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 107 108 #define DEBUG_INTR 0x01 109 #define DEBUG_XFERS 0x02 110 #define DEBUG_STATUS 0x04 111 #define DEBUG_FUNCS 0x08 112 #define DEBUG_PROBE 0x10 113 #ifdef ATADEBUG 114 int wdcdebug_wd_mask = 0x0; 115 #define ATADEBUG_PRINT(args, level) \ 116 if (wdcdebug_wd_mask & (level)) \ 117 printf args 118 #else 119 #define ATADEBUG_PRINT(args, level) 120 #endif 121 122 int wdprobe(device_t, cfdata_t, void *); 123 void wdattach(device_t, device_t, void *); 124 int wddetach(device_t, int); 125 int wdprint(void *, char *); 126 void wdperror(const struct wd_softc *); 127 128 static int wdlastclose(device_t); 129 static bool wd_suspend(device_t, const pmf_qual_t *); 130 static int wd_standby(struct wd_softc *, int); 131 132 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 133 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 134 135 extern struct cfdriver wd_cd; 136 137 dev_type_open(wdopen); 138 dev_type_close(wdclose); 139 dev_type_read(wdread); 140 dev_type_write(wdwrite); 141 dev_type_ioctl(wdioctl); 142 dev_type_strategy(wdstrategy); 143 dev_type_dump(wddump); 144 dev_type_size(wdsize); 145 146 const struct bdevsw wd_bdevsw = { 147 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 148 }; 149 150 const struct cdevsw wd_cdevsw = { 151 wdopen, wdclose, wdread, wdwrite, wdioctl, 152 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 153 }; 154 155 /* 156 * Glue necessary to hook WDCIOCCOMMAND into physio 157 */ 158 159 struct wd_ioctl { 160 LIST_ENTRY(wd_ioctl) wi_list; 161 struct buf wi_bp; 162 struct uio wi_uio; 163 struct iovec wi_iov; 164 atareq_t wi_atareq; 165 struct wd_softc *wi_softc; 166 }; 167 168 LIST_HEAD(, wd_ioctl) wi_head; 169 170 struct wd_ioctl *wi_find(struct buf *); 171 void wi_free(struct wd_ioctl *); 172 struct wd_ioctl *wi_get(void); 173 void wdioctlstrategy(struct buf *); 174 175 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 176 void wdgetdisklabel(struct wd_softc *); 177 void wdstart(void *); 178 void wdstart1(struct wd_softc*, struct buf *); 179 void wdrestart(void *); 180 void wddone(void *); 181 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 182 int wd_flushcache(struct wd_softc *, int); 183 bool wd_shutdown(device_t, int); 184 185 int wd_getcache(struct wd_softc *, int *); 186 int wd_setcache(struct wd_softc *, int); 187 188 struct dkdriver wddkdriver = { wdstrategy, minphys }; 189 190 #ifdef HAS_BAD144_HANDLING 191 static void bad144intern(struct wd_softc *); 192 #endif 193 194 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 195 196 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 197 198 /* 199 * Quirk table for IDE drives. Put more-specific matches first, since 200 * a simple globbing routine is used for matching. 201 */ 202 static const struct wd_quirk { 203 const char *wdq_match; /* inquiry pattern to match */ 204 int wdq_quirks; /* drive quirks */ 205 } wd_quirk_table[] = { 206 /* 207 * Some Seagate S-ATA drives have a PHY which can get confused 208 * with the way data is packetized by some S-ATA controllers. 209 * 210 * The work-around is to split in two any write transfer whose 211 * sector count % 15 == 1 (assuming 512 byte sectors). 212 * 213 * XXX This is an incomplete list. There are at least a couple 214 * XXX more model numbers. If you have trouble with such transfers 215 * XXX (8K is the most common) on Seagate S-ATA drives, please 216 * XXX notify thorpej (at) NetBSD.org. 217 */ 218 { "ST3120023AS", 219 WD_QUIRK_SPLIT_MOD15_WRITE }, 220 { "ST380023AS", 221 WD_QUIRK_SPLIT_MOD15_WRITE }, 222 { NULL, 223 0 } 224 }; 225 226 static const struct wd_quirk * 227 wd_lookup_quirks(const char *name) 228 { 229 const struct wd_quirk *wdq; 230 const char *estr; 231 232 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 233 /* 234 * We only want exact matches (which include matches 235 * against globbing characters). 236 */ 237 if (pmatch(name, wdq->wdq_match, &estr) == 2) 238 return (wdq); 239 } 240 return (NULL); 241 } 242 243 int 244 wdprobe(device_t parent, cfdata_t match, void *aux) 245 { 246 struct ata_device *adev = aux; 247 248 if (adev == NULL) 249 return 0; 250 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 251 return 0; 252 253 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 254 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 255 return 0; 256 return 1; 257 } 258 259 void 260 wdattach(device_t parent, device_t self, void *aux) 261 { 262 struct wd_softc *wd = device_private(self); 263 struct ata_device *adev= aux; 264 int i, blank; 265 char tbuf[41], pbuf[9], c, *p, *q; 266 const struct wd_quirk *wdq; 267 268 wd->sc_dev = self; 269 270 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 271 callout_init(&wd->sc_restart_ch, 0); 272 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 273 #ifdef WD_SOFTBADSECT 274 SLIST_INIT(&wd->sc_bslist); 275 #endif 276 wd->atabus = adev->adev_bustype; 277 wd->openings = adev->adev_openings; 278 wd->drvp = adev->adev_drv_data; 279 280 wd->drvp->drv_done = wddone; 281 wd->drvp->drv_softc = wd->sc_dev; 282 283 aprint_naive("\n"); 284 aprint_normal("\n"); 285 286 /* read our drive info */ 287 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 288 aprint_error_dev(self, "IDENTIFY failed\n"); 289 return; 290 } 291 292 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 293 i < sizeof(wd->sc_params.atap_model); i++) { 294 c = *p++; 295 if (c == '\0') 296 break; 297 if (c != ' ') { 298 if (blank) { 299 *q++ = ' '; 300 blank = 0; 301 } 302 *q++ = c; 303 } else 304 blank = 1; 305 } 306 *q++ = '\0'; 307 308 aprint_normal_dev(self, "<%s>\n", tbuf); 309 310 wdq = wd_lookup_quirks(tbuf); 311 if (wdq != NULL) 312 wd->sc_quirks = wdq->wdq_quirks; 313 314 if (wd->sc_quirks != 0) { 315 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 316 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 317 aprint_normal_dev(self, "quirks %s\n", sbuf); 318 } 319 320 if ((wd->sc_params.atap_multi & 0xff) > 1) { 321 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 322 } else { 323 wd->sc_multi = 1; 324 } 325 326 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 327 wd->sc_multi); 328 329 /* 48-bit LBA addressing */ 330 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 331 wd->sc_flags |= WDF_LBA48; 332 333 /* Prior to ATA-4, LBA was optional. */ 334 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 335 wd->sc_flags |= WDF_LBA; 336 #if 0 337 /* ATA-4 requires LBA. */ 338 if (wd->sc_params.atap_ataversion != 0xffff && 339 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 340 wd->sc_flags |= WDF_LBA; 341 #endif 342 343 if ((wd->sc_flags & WDF_LBA48) != 0) { 344 aprint_verbose(" LBA48 addressing\n"); 345 wd->sc_capacity = 346 ((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) | 347 ((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) | 348 ((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) | 349 ((u_int64_t) wd->sc_params.atap_max_lba[0] << 0); 350 wd->sc_capacity28 = 351 (wd->sc_params.atap_capacity[1] << 16) | 352 wd->sc_params.atap_capacity[0]; 353 } else if ((wd->sc_flags & WDF_LBA) != 0) { 354 aprint_verbose(" LBA addressing\n"); 355 wd->sc_capacity28 = wd->sc_capacity = 356 (wd->sc_params.atap_capacity[1] << 16) | 357 wd->sc_params.atap_capacity[0]; 358 } else { 359 aprint_verbose(" chs addressing\n"); 360 wd->sc_capacity28 = wd->sc_capacity = 361 wd->sc_params.atap_cylinders * 362 wd->sc_params.atap_heads * 363 wd->sc_params.atap_sectors; 364 } 365 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 366 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 367 "%d bytes/sect x %llu sectors\n", 368 pbuf, 369 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 370 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 371 wd->sc_params.atap_cylinders, 372 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 373 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 374 375 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 376 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 377 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 378 /* 379 * Initialize and attach the disk structure. 380 */ 381 /* we fill in dk_info later */ 382 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 383 disk_attach(&wd->sc_dk); 384 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 385 #if NRND > 0 386 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 387 RND_TYPE_DISK, 0); 388 #endif 389 390 /* Discover wedges on this disk. */ 391 dkwedge_discover(&wd->sc_dk); 392 393 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 394 aprint_error_dev(self, "couldn't establish power handler\n"); 395 } 396 397 static bool 398 wd_suspend(device_t dv, const pmf_qual_t *qual) 399 { 400 struct wd_softc *sc = device_private(dv); 401 402 wd_flushcache(sc, AT_WAIT); 403 wd_standby(sc, AT_WAIT); 404 return true; 405 } 406 407 int 408 wddetach(device_t self, int flags) 409 { 410 struct wd_softc *sc = device_private(self); 411 int bmaj, cmaj, i, mn, rc, s; 412 413 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 414 return rc; 415 416 /* locate the major number */ 417 bmaj = bdevsw_lookup_major(&wd_bdevsw); 418 cmaj = cdevsw_lookup_major(&wd_cdevsw); 419 420 /* Nuke the vnodes for any open instances. */ 421 for (i = 0; i < MAXPARTITIONS; i++) { 422 mn = WDMINOR(device_unit(self), i); 423 vdevgone(bmaj, mn, mn, VBLK); 424 vdevgone(cmaj, mn, mn, VCHR); 425 } 426 427 /* Delete all of our wedges. */ 428 dkwedge_delall(&sc->sc_dk); 429 430 s = splbio(); 431 432 /* Kill off any queued buffers. */ 433 bufq_drain(sc->sc_q); 434 435 bufq_free(sc->sc_q); 436 sc->atabus->ata_killpending(sc->drvp); 437 438 splx(s); 439 440 /* Detach disk. */ 441 disk_detach(&sc->sc_dk); 442 disk_destroy(&sc->sc_dk); 443 444 #ifdef WD_SOFTBADSECT 445 /* Clean out the bad sector list */ 446 while (!SLIST_EMPTY(&sc->sc_bslist)) { 447 void *head = SLIST_FIRST(&sc->sc_bslist); 448 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 449 free(head, M_TEMP); 450 } 451 sc->sc_bscount = 0; 452 #endif 453 454 pmf_device_deregister(self); 455 456 #if NRND > 0 457 /* Unhook the entropy source. */ 458 rnd_detach_source(&sc->rnd_source); 459 #endif 460 461 callout_destroy(&sc->sc_restart_ch); 462 463 sc->drvp->drive_flags = 0; /* no drive any more here */ 464 465 return (0); 466 } 467 468 /* 469 * Read/write routine for a buffer. Validates the arguments and schedules the 470 * transfer. Does not wait for the transfer to complete. 471 */ 472 void 473 wdstrategy(struct buf *bp) 474 { 475 struct wd_softc *wd = 476 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 477 struct disklabel *lp = wd->sc_dk.dk_label; 478 daddr_t blkno; 479 int s; 480 481 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 482 DEBUG_XFERS); 483 484 /* Valid request? */ 485 if (bp->b_blkno < 0 || 486 (bp->b_bcount % lp->d_secsize) != 0 || 487 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 488 bp->b_error = EINVAL; 489 goto done; 490 } 491 492 /* If device invalidated (e.g. media change, door open, 493 * device detachment), then error. 494 */ 495 if ((wd->sc_flags & WDF_LOADED) == 0 || 496 !device_is_enabled(wd->sc_dev)) { 497 bp->b_error = EIO; 498 goto done; 499 } 500 501 /* If it's a null transfer, return immediately. */ 502 if (bp->b_bcount == 0) 503 goto done; 504 505 /* 506 * Do bounds checking, adjust transfer. if error, process. 507 * If end of partition, just return. 508 */ 509 if (WDPART(bp->b_dev) == RAW_PART) { 510 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 511 wd->sc_capacity) <= 0) 512 goto done; 513 } else { 514 if (bounds_check_with_label(&wd->sc_dk, bp, 515 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 516 goto done; 517 } 518 519 /* 520 * Now convert the block number to absolute and put it in 521 * terms of the device's logical block size. 522 */ 523 if (lp->d_secsize >= DEV_BSIZE) 524 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 525 else 526 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 527 528 if (WDPART(bp->b_dev) != RAW_PART) 529 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 530 531 bp->b_rawblkno = blkno; 532 533 #ifdef WD_SOFTBADSECT 534 /* 535 * If the transfer about to be attempted contains only a block that 536 * is known to be bad then return an error for the transfer without 537 * even attempting to start a transfer up under the premis that we 538 * will just end up doing more retries for a transfer that will end 539 * up failing again. 540 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 541 */ 542 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 543 struct disk_badsectors *dbs; 544 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 545 546 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 547 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 548 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 549 bp->b_error = EIO; 550 goto done; 551 } 552 } 553 #endif 554 555 /* Queue transfer on drive, activate drive and controller if idle. */ 556 s = splbio(); 557 bufq_put(wd->sc_q, bp); 558 wdstart(wd); 559 splx(s); 560 return; 561 done: 562 /* Toss transfer; we're done early. */ 563 bp->b_resid = bp->b_bcount; 564 biodone(bp); 565 } 566 567 /* 568 * Queue a drive for I/O. 569 */ 570 void 571 wdstart(void *arg) 572 { 573 struct wd_softc *wd = arg; 574 struct buf *bp = NULL; 575 576 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 577 DEBUG_XFERS); 578 579 if (!device_is_active(wd->sc_dev)) 580 return; 581 582 while (wd->openings > 0) { 583 584 /* Is there a buf for us ? */ 585 if ((bp = bufq_get(wd->sc_q)) == NULL) 586 return; 587 588 /* 589 * Make the command. First lock the device 590 */ 591 wd->openings--; 592 593 wd->retries = 0; 594 wdstart1(wd, bp); 595 } 596 } 597 598 static void 599 wd_split_mod15_write(struct buf *bp) 600 { 601 struct buf *obp = bp->b_private; 602 struct wd_softc *sc = 603 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 604 int s; 605 606 if (__predict_false(bp->b_error != 0)) { 607 /* 608 * Propagate the error. If this was the first half of 609 * the original transfer, make sure to account for that 610 * in the residual. 611 */ 612 if (bp->b_data == obp->b_data) 613 bp->b_resid += bp->b_bcount; 614 goto done; 615 } 616 617 /* 618 * If this was the second half of the transfer, we're all done! 619 */ 620 if (bp->b_data != obp->b_data) 621 goto done; 622 623 /* 624 * Advance the pointer to the second half and issue that command 625 * using the same opening. 626 */ 627 bp->b_flags = obp->b_flags; 628 bp->b_oflags = obp->b_oflags; 629 bp->b_cflags = obp->b_cflags; 630 bp->b_data = (char *)bp->b_data + bp->b_bcount; 631 bp->b_blkno += (bp->b_bcount / 512); 632 bp->b_rawblkno += (bp->b_bcount / 512); 633 s = splbio(); 634 wdstart1(sc, bp); 635 splx(s); 636 return; 637 638 done: 639 obp->b_error = bp->b_error; 640 obp->b_resid = bp->b_resid; 641 s = splbio(); 642 putiobuf(bp); 643 biodone(obp); 644 sc->openings++; 645 splx(s); 646 /* wddone() will call wdstart() */ 647 } 648 649 void 650 wdstart1(struct wd_softc *wd, struct buf *bp) 651 { 652 653 /* 654 * Deal with the "split mod15 write" quirk. We just divide the 655 * transfer in two, doing the first half and then then second half 656 * with the same command opening. 657 * 658 * Note we MUST do this here, because we can't let insertion 659 * into the bufq cause the transfers to be re-merged. 660 */ 661 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 662 (bp->b_flags & B_READ) == 0 && 663 bp->b_bcount > 512 && 664 ((bp->b_bcount / 512) % 15) == 1)) { 665 struct buf *nbp; 666 667 /* already at splbio */ 668 nbp = getiobuf(NULL, false); 669 if (__predict_false(nbp == NULL)) { 670 /* No memory -- fail the iop. */ 671 bp->b_error = ENOMEM; 672 bp->b_resid = bp->b_bcount; 673 biodone(bp); 674 wd->openings++; 675 return; 676 } 677 678 nbp->b_error = 0; 679 nbp->b_proc = bp->b_proc; 680 nbp->b_dev = bp->b_dev; 681 682 nbp->b_bcount = bp->b_bcount / 2; 683 nbp->b_bufsize = bp->b_bcount / 2; 684 nbp->b_data = bp->b_data; 685 686 nbp->b_blkno = bp->b_blkno; 687 nbp->b_rawblkno = bp->b_rawblkno; 688 689 nbp->b_flags = bp->b_flags; 690 nbp->b_oflags = bp->b_oflags; 691 nbp->b_cflags = bp->b_cflags; 692 nbp->b_iodone = wd_split_mod15_write; 693 694 /* Put ptr to orig buf in b_private and use new buf */ 695 nbp->b_private = bp; 696 697 BIO_COPYPRIO(nbp, bp); 698 699 bp = nbp; 700 } 701 702 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 703 wd->sc_wdc_bio.bcount = bp->b_bcount; 704 wd->sc_wdc_bio.databuf = bp->b_data; 705 wd->sc_wdc_bio.blkdone =0; 706 wd->sc_bp = bp; 707 /* 708 * If we're retrying, retry in single-sector mode. This will give us 709 * the sector number of the problem, and will eventually allow the 710 * transfer to succeed. 711 */ 712 if (wd->retries >= WDIORETRIES_SINGLE) 713 wd->sc_wdc_bio.flags = ATA_SINGLE; 714 else 715 wd->sc_wdc_bio.flags = 0; 716 if (wd->sc_flags & WDF_LBA48 && 717 (wd->sc_wdc_bio.blkno + 718 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 719 wd->sc_capacity28) 720 wd->sc_wdc_bio.flags |= ATA_LBA48; 721 if (wd->sc_flags & WDF_LBA) 722 wd->sc_wdc_bio.flags |= ATA_LBA; 723 if (bp->b_flags & B_READ) 724 wd->sc_wdc_bio.flags |= ATA_READ; 725 /* Instrumentation. */ 726 disk_busy(&wd->sc_dk); 727 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 728 case ATACMD_TRY_AGAIN: 729 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 730 break; 731 case ATACMD_QUEUED: 732 case ATACMD_COMPLETE: 733 break; 734 default: 735 panic("wdstart1: bad return code from ata_bio()"); 736 } 737 } 738 739 void 740 wddone(void *v) 741 { 742 struct wd_softc *wd = device_private(v); 743 struct buf *bp = wd->sc_bp; 744 const char *errmsg; 745 int do_perror = 0; 746 747 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 748 DEBUG_XFERS); 749 if (bp == NULL) 750 return; 751 bp->b_resid = wd->sc_wdc_bio.bcount; 752 switch (wd->sc_wdc_bio.error) { 753 case ERR_DMA: 754 errmsg = "DMA error"; 755 goto retry; 756 case ERR_DF: 757 errmsg = "device fault"; 758 goto retry; 759 case TIMEOUT: 760 errmsg = "device timeout"; 761 goto retry; 762 case ERR_RESET: 763 errmsg = "channel reset"; 764 goto retry2; 765 case ERROR: 766 /* Don't care about media change bits */ 767 if (wd->sc_wdc_bio.r_error != 0 && 768 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 769 goto noerror; 770 errmsg = "error"; 771 do_perror = 1; 772 retry: /* Just reset and retry. Can we do more ? */ 773 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 774 retry2: 775 diskerr(bp, "wd", errmsg, LOG_PRINTF, 776 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 777 if (wd->retries < WDIORETRIES) 778 printf(", retrying"); 779 printf("\n"); 780 if (do_perror) 781 wdperror(wd); 782 if (wd->retries < WDIORETRIES) { 783 wd->retries++; 784 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 785 wdrestart, wd); 786 return; 787 } 788 789 #ifdef WD_SOFTBADSECT 790 /* 791 * Not all errors indicate a failed block but those that do, 792 * put the block on the bad-block list for the device. Only 793 * do this for reads because the drive should do it for writes, 794 * itself, according to Manuel. 795 */ 796 if ((bp->b_flags & B_READ) && 797 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 798 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 799 struct disk_badsectors *dbs; 800 801 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 802 dbs->dbs_min = bp->b_rawblkno; 803 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 804 microtime(&dbs->dbs_failedat); 805 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 806 wd->sc_bscount++; 807 } 808 #endif 809 bp->b_error = EIO; 810 break; 811 case NOERROR: 812 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 813 aprint_error_dev(wd->sc_dev, 814 "soft error (corrected)\n"); 815 break; 816 case ERR_NODEV: 817 bp->b_error = EIO; 818 break; 819 } 820 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 821 (bp->b_flags & B_READ)); 822 #if NRND > 0 823 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 824 #endif 825 /* XXX Yuck, but we don't want to increment openings in this case */ 826 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 827 biodone(bp); 828 else { 829 biodone(bp); 830 wd->openings++; 831 } 832 wdstart(wd); 833 } 834 835 void 836 wdrestart(void *v) 837 { 838 struct wd_softc *wd = v; 839 struct buf *bp = wd->sc_bp; 840 int s; 841 842 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 843 DEBUG_XFERS); 844 s = splbio(); 845 wdstart1(v, bp); 846 splx(s); 847 } 848 849 int 850 wdread(dev_t dev, struct uio *uio, int flags) 851 { 852 853 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 854 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 855 } 856 857 int 858 wdwrite(dev_t dev, struct uio *uio, int flags) 859 { 860 861 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 862 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 863 } 864 865 int 866 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 867 { 868 struct wd_softc *wd; 869 int part, error; 870 871 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 872 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 873 if (wd == NULL) 874 return (ENXIO); 875 876 if (! device_is_active(wd->sc_dev)) 877 return (ENODEV); 878 879 part = WDPART(dev); 880 881 mutex_enter(&wd->sc_dk.dk_openlock); 882 883 /* 884 * If there are wedges, and this is not RAW_PART, then we 885 * need to fail. 886 */ 887 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 888 error = EBUSY; 889 goto bad1; 890 } 891 892 /* 893 * If this is the first open of this device, add a reference 894 * to the adapter. 895 */ 896 if (wd->sc_dk.dk_openmask == 0 && 897 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 898 goto bad1; 899 900 if (wd->sc_dk.dk_openmask != 0) { 901 /* 902 * If any partition is open, but the disk has been invalidated, 903 * disallow further opens. 904 */ 905 if ((wd->sc_flags & WDF_LOADED) == 0) { 906 error = EIO; 907 goto bad2; 908 } 909 } else { 910 if ((wd->sc_flags & WDF_LOADED) == 0) { 911 wd->sc_flags |= WDF_LOADED; 912 913 /* Load the physical device parameters. */ 914 wd_get_params(wd, AT_WAIT, &wd->sc_params); 915 916 /* Load the partition info if not already loaded. */ 917 wdgetdisklabel(wd); 918 } 919 } 920 921 /* Check that the partition exists. */ 922 if (part != RAW_PART && 923 (part >= wd->sc_dk.dk_label->d_npartitions || 924 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 925 error = ENXIO; 926 goto bad2; 927 } 928 929 /* Insure only one open at a time. */ 930 switch (fmt) { 931 case S_IFCHR: 932 wd->sc_dk.dk_copenmask |= (1 << part); 933 break; 934 case S_IFBLK: 935 wd->sc_dk.dk_bopenmask |= (1 << part); 936 break; 937 } 938 wd->sc_dk.dk_openmask = 939 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 940 941 mutex_exit(&wd->sc_dk.dk_openlock); 942 return 0; 943 944 bad2: 945 if (wd->sc_dk.dk_openmask == 0) 946 wd->atabus->ata_delref(wd->drvp); 947 bad1: 948 mutex_exit(&wd->sc_dk.dk_openlock); 949 return error; 950 } 951 952 /* 953 * Caller must hold wd->sc_dk.dk_openlock. 954 */ 955 static int 956 wdlastclose(device_t self) 957 { 958 struct wd_softc *wd = device_private(self); 959 960 wd_flushcache(wd, AT_WAIT); 961 962 if (! (wd->sc_flags & WDF_KLABEL)) 963 wd->sc_flags &= ~WDF_LOADED; 964 965 wd->atabus->ata_delref(wd->drvp); 966 967 return 0; 968 } 969 970 int 971 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 972 { 973 struct wd_softc *wd = 974 device_lookup_private(&wd_cd, WDUNIT(dev)); 975 int part = WDPART(dev); 976 977 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 978 979 mutex_enter(&wd->sc_dk.dk_openlock); 980 981 switch (fmt) { 982 case S_IFCHR: 983 wd->sc_dk.dk_copenmask &= ~(1 << part); 984 break; 985 case S_IFBLK: 986 wd->sc_dk.dk_bopenmask &= ~(1 << part); 987 break; 988 } 989 wd->sc_dk.dk_openmask = 990 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 991 992 if (wd->sc_dk.dk_openmask == 0) 993 wdlastclose(wd->sc_dev); 994 995 mutex_exit(&wd->sc_dk.dk_openlock); 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, device_unit(wd->sc_dev), 1064 RAW_PART), wdstrategy, lp, 1065 wd->sc_dk.dk_cpulabel); 1066 if (errstring) { 1067 /* 1068 * This probably happened because the drive's default 1069 * geometry doesn't match the DOS geometry. We 1070 * assume the DOS geometry is now in the label and try 1071 * again. XXX This is a kluge. 1072 */ 1073 if (wd->drvp->state > RESET) { 1074 s = splbio(); 1075 wd->drvp->drive_flags |= DRIVE_RESET; 1076 splx(s); 1077 } 1078 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1079 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1080 } 1081 if (errstring) { 1082 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1083 return; 1084 } 1085 1086 if (wd->drvp->state > RESET) { 1087 s = splbio(); 1088 wd->drvp->drive_flags |= DRIVE_RESET; 1089 splx(s); 1090 } 1091 #ifdef HAS_BAD144_HANDLING 1092 if ((lp->d_flags & D_BADSECT) != 0) 1093 bad144intern(wd); 1094 #endif 1095 } 1096 1097 void 1098 wdperror(const struct wd_softc *wd) 1099 { 1100 static const char *const errstr0_3[] = {"address mark not found", 1101 "track 0 not found", "aborted command", "media change requested", 1102 "id not found", "media changed", "uncorrectable data error", 1103 "bad block detected"}; 1104 static const char *const errstr4_5[] = { 1105 "obsolete (address mark not found)", 1106 "no media/write protected", "aborted command", 1107 "media change requested", "id not found", "media changed", 1108 "uncorrectable data error", "interface CRC error"}; 1109 const char *const *errstr; 1110 int i; 1111 const char *sep = ""; 1112 1113 const char *devname = device_xname(wd->sc_dev); 1114 struct ata_drive_datas *drvp = wd->drvp; 1115 int errno = wd->sc_wdc_bio.r_error; 1116 1117 if (drvp->ata_vers >= 4) 1118 errstr = errstr4_5; 1119 else 1120 errstr = errstr0_3; 1121 1122 printf("%s: (", devname); 1123 1124 if (errno == 0) 1125 printf("error not notified"); 1126 1127 for (i = 0; i < 8; i++) { 1128 if (errno & (1 << i)) { 1129 printf("%s%s", sep, errstr[i]); 1130 sep = ", "; 1131 } 1132 } 1133 printf(")\n"); 1134 } 1135 1136 int 1137 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1138 { 1139 struct wd_softc *wd = 1140 device_lookup_private(&wd_cd, WDUNIT(dev)); 1141 int error = 0, s; 1142 #ifdef __HAVE_OLD_DISKLABEL 1143 struct disklabel *newlabel = NULL; 1144 #endif 1145 1146 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1147 1148 if ((wd->sc_flags & WDF_LOADED) == 0) 1149 return EIO; 1150 1151 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1152 if (error != EPASSTHROUGH) 1153 return (error); 1154 1155 switch (xfer) { 1156 #ifdef HAS_BAD144_HANDLING 1157 case DIOCSBAD: 1158 if ((flag & FWRITE) == 0) 1159 return EBADF; 1160 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1161 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1162 bad144intern(wd); 1163 return 0; 1164 #endif 1165 #ifdef WD_SOFTBADSECT 1166 case DIOCBSLIST : 1167 { 1168 u_int32_t count, missing, skip; 1169 struct disk_badsecinfo dbsi; 1170 struct disk_badsectors *dbs; 1171 size_t available; 1172 uint8_t *laddr; 1173 1174 dbsi = *(struct disk_badsecinfo *)addr; 1175 missing = wd->sc_bscount; 1176 count = 0; 1177 available = dbsi.dbsi_bufsize; 1178 skip = dbsi.dbsi_skip; 1179 laddr = (uint8_t *)dbsi.dbsi_buffer; 1180 1181 /* 1182 * We start this loop with the expectation that all of the 1183 * entries will be missed and decrement this counter each 1184 * time we either skip over one (already copied out) or 1185 * we actually copy it back to user space. The structs 1186 * holding the bad sector information are copied directly 1187 * back to user space whilst the summary is returned via 1188 * the struct passed in via the ioctl. 1189 */ 1190 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1191 if (skip > 0) { 1192 missing--; 1193 skip--; 1194 continue; 1195 } 1196 if (available < sizeof(*dbs)) 1197 break; 1198 available -= sizeof(*dbs); 1199 copyout(dbs, laddr, sizeof(*dbs)); 1200 laddr += sizeof(*dbs); 1201 missing--; 1202 count++; 1203 } 1204 dbsi.dbsi_left = missing; 1205 dbsi.dbsi_copied = count; 1206 *(struct disk_badsecinfo *)addr = dbsi; 1207 return 0; 1208 } 1209 1210 case DIOCBSFLUSH : 1211 /* Clean out the bad sector list */ 1212 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1213 void *head = SLIST_FIRST(&wd->sc_bslist); 1214 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1215 free(head, M_TEMP); 1216 } 1217 wd->sc_bscount = 0; 1218 return 0; 1219 #endif 1220 case DIOCGDINFO: 1221 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1222 return 0; 1223 #ifdef __HAVE_OLD_DISKLABEL 1224 case ODIOCGDINFO: 1225 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1226 if (newlabel == NULL) 1227 return EIO; 1228 *newlabel = *(wd->sc_dk.dk_label); 1229 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1230 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1231 else 1232 error = ENOTTY; 1233 free(newlabel, M_TEMP); 1234 return error; 1235 #endif 1236 1237 case DIOCGPART: 1238 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1239 ((struct partinfo *)addr)->part = 1240 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1241 return 0; 1242 1243 case DIOCWDINFO: 1244 case DIOCSDINFO: 1245 #ifdef __HAVE_OLD_DISKLABEL 1246 case ODIOCWDINFO: 1247 case ODIOCSDINFO: 1248 #endif 1249 { 1250 struct disklabel *lp; 1251 1252 if ((flag & FWRITE) == 0) 1253 return EBADF; 1254 1255 #ifdef __HAVE_OLD_DISKLABEL 1256 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1257 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1258 if (newlabel == NULL) 1259 return EIO; 1260 memset(newlabel, 0, sizeof newlabel); 1261 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1262 lp = newlabel; 1263 } else 1264 #endif 1265 lp = (struct disklabel *)addr; 1266 1267 mutex_enter(&wd->sc_dk.dk_openlock); 1268 wd->sc_flags |= WDF_LABELLING; 1269 1270 error = setdisklabel(wd->sc_dk.dk_label, 1271 lp, /*wd->sc_dk.dk_openmask : */0, 1272 wd->sc_dk.dk_cpulabel); 1273 if (error == 0) { 1274 if (wd->drvp->state > RESET) { 1275 s = splbio(); 1276 wd->drvp->drive_flags |= DRIVE_RESET; 1277 splx(s); 1278 } 1279 if (xfer == DIOCWDINFO 1280 #ifdef __HAVE_OLD_DISKLABEL 1281 || xfer == ODIOCWDINFO 1282 #endif 1283 ) 1284 error = writedisklabel(WDLABELDEV(dev), 1285 wdstrategy, wd->sc_dk.dk_label, 1286 wd->sc_dk.dk_cpulabel); 1287 } 1288 1289 wd->sc_flags &= ~WDF_LABELLING; 1290 mutex_exit(&wd->sc_dk.dk_openlock); 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 void *tbuf; 1385 if (atareq->datalen < DEV_BSIZE 1386 && atareq->command == WDCC_IDENTIFY) { 1387 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1388 wi->wi_iov.iov_base = tbuf; 1389 wi->wi_iov.iov_len = DEV_BSIZE; 1390 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1391 } else { 1392 tbuf = NULL; 1393 wi->wi_iov.iov_base = atareq->databuf; 1394 wi->wi_iov.iov_len = atareq->datalen; 1395 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1396 } 1397 wi->wi_uio.uio_iov = &wi->wi_iov; 1398 wi->wi_uio.uio_iovcnt = 1; 1399 wi->wi_uio.uio_resid = atareq->datalen; 1400 wi->wi_uio.uio_offset = 0; 1401 wi->wi_uio.uio_rw = 1402 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1403 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1404 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1405 minphys, &wi->wi_uio); 1406 if (tbuf != NULL && error1 == 0) { 1407 error1 = copyout(tbuf, atareq->databuf, 1408 atareq->datalen); 1409 free(tbuf, M_TEMP); 1410 } 1411 } else { 1412 /* No need to call physio if we don't have any 1413 user data */ 1414 wi->wi_bp.b_flags = 0; 1415 wi->wi_bp.b_data = 0; 1416 wi->wi_bp.b_bcount = 0; 1417 wi->wi_bp.b_dev = 0; 1418 wi->wi_bp.b_proc = l->l_proc; 1419 wdioctlstrategy(&wi->wi_bp); 1420 error1 = wi->wi_bp.b_error; 1421 } 1422 *atareq = wi->wi_atareq; 1423 wi_free(wi); 1424 return(error1); 1425 } 1426 1427 case DIOCAWEDGE: 1428 { 1429 struct dkwedge_info *dkw = (void *) addr; 1430 1431 if ((flag & FWRITE) == 0) 1432 return (EBADF); 1433 1434 /* If the ioctl happens here, the parent is us. */ 1435 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1436 return (dkwedge_add(dkw)); 1437 } 1438 1439 case DIOCDWEDGE: 1440 { 1441 struct dkwedge_info *dkw = (void *) addr; 1442 1443 if ((flag & FWRITE) == 0) 1444 return (EBADF); 1445 1446 /* If the ioctl happens here, the parent is us. */ 1447 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1448 return (dkwedge_del(dkw)); 1449 } 1450 1451 case DIOCLWEDGES: 1452 { 1453 struct dkwedge_list *dkwl = (void *) addr; 1454 1455 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1456 } 1457 1458 case DIOCGSTRATEGY: 1459 { 1460 struct disk_strategy *dks = (void *)addr; 1461 1462 s = splbio(); 1463 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1464 sizeof(dks->dks_name)); 1465 splx(s); 1466 dks->dks_paramlen = 0; 1467 1468 return 0; 1469 } 1470 1471 case DIOCSSTRATEGY: 1472 { 1473 struct disk_strategy *dks = (void *)addr; 1474 struct bufq_state *new; 1475 struct bufq_state *old; 1476 1477 if ((flag & FWRITE) == 0) { 1478 return EBADF; 1479 } 1480 if (dks->dks_param != NULL) { 1481 return EINVAL; 1482 } 1483 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1484 error = bufq_alloc(&new, dks->dks_name, 1485 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1486 if (error) { 1487 return error; 1488 } 1489 s = splbio(); 1490 old = wd->sc_q; 1491 bufq_move(new, old); 1492 wd->sc_q = new; 1493 splx(s); 1494 bufq_free(old); 1495 1496 return 0; 1497 } 1498 1499 default: 1500 return ENOTTY; 1501 } 1502 1503 #ifdef DIAGNOSTIC 1504 panic("wdioctl: impossible"); 1505 #endif 1506 } 1507 1508 #ifdef B_FORMAT 1509 int 1510 wdformat(struct buf *bp) 1511 { 1512 1513 bp->b_flags |= B_FORMAT; 1514 return wdstrategy(bp); 1515 } 1516 #endif 1517 1518 int 1519 wdsize(dev_t dev) 1520 { 1521 struct wd_softc *wd; 1522 int part, omask; 1523 int size; 1524 1525 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1526 1527 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1528 if (wd == NULL) 1529 return (-1); 1530 1531 part = WDPART(dev); 1532 omask = wd->sc_dk.dk_openmask & (1 << part); 1533 1534 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1535 return (-1); 1536 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1537 size = -1; 1538 else 1539 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1540 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1541 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1542 return (-1); 1543 return (size); 1544 } 1545 1546 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1547 static int wddoingadump = 0; 1548 static int wddumprecalibrated = 0; 1549 1550 /* 1551 * Dump core after a system crash. 1552 */ 1553 int 1554 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1555 { 1556 struct wd_softc *wd; /* disk unit to do the I/O */ 1557 struct disklabel *lp; /* disk's disklabel */ 1558 int part, err; 1559 int nblks; /* total number of sectors left to write */ 1560 1561 /* Check if recursive dump; if so, punt. */ 1562 if (wddoingadump) 1563 return EFAULT; 1564 wddoingadump = 1; 1565 1566 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1567 if (wd == NULL) 1568 return (ENXIO); 1569 1570 part = WDPART(dev); 1571 1572 /* Convert to disk sectors. Request must be a multiple of size. */ 1573 lp = wd->sc_dk.dk_label; 1574 if ((size % lp->d_secsize) != 0) 1575 return EFAULT; 1576 nblks = size / lp->d_secsize; 1577 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1578 1579 /* Check transfer bounds against partition size. */ 1580 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1581 return EINVAL; 1582 1583 /* Offset block number to start of partition. */ 1584 blkno += lp->d_partitions[part].p_offset; 1585 1586 /* Recalibrate, if first dump transfer. */ 1587 if (wddumprecalibrated == 0) { 1588 wddumprecalibrated = 1; 1589 (*wd->atabus->ata_reset_drive)(wd->drvp, 1590 AT_POLL | AT_RST_EMERG); 1591 wd->drvp->state = RESET; 1592 } 1593 1594 wd->sc_bp = NULL; 1595 wd->sc_wdc_bio.blkno = blkno; 1596 wd->sc_wdc_bio.flags = ATA_POLL; 1597 if (wd->sc_flags & WDF_LBA48 && 1598 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1599 wd->sc_wdc_bio.flags |= ATA_LBA48; 1600 if (wd->sc_flags & WDF_LBA) 1601 wd->sc_wdc_bio.flags |= ATA_LBA; 1602 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1603 wd->sc_wdc_bio.databuf = va; 1604 #ifndef WD_DUMP_NOT_TRUSTED 1605 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1606 case ATACMD_TRY_AGAIN: 1607 panic("wddump: try again"); 1608 break; 1609 case ATACMD_QUEUED: 1610 panic("wddump: polled command has been queued"); 1611 break; 1612 case ATACMD_COMPLETE: 1613 break; 1614 default: 1615 panic("wddump: unknown atacmd code %d", err); 1616 } 1617 switch(err = wd->sc_wdc_bio.error) { 1618 case TIMEOUT: 1619 printf("wddump: device timed out"); 1620 err = EIO; 1621 break; 1622 case ERR_DF: 1623 printf("wddump: drive fault"); 1624 err = EIO; 1625 break; 1626 case ERR_DMA: 1627 printf("wddump: DMA error"); 1628 err = EIO; 1629 break; 1630 case ERROR: 1631 printf("wddump: "); 1632 wdperror(wd); 1633 err = EIO; 1634 break; 1635 case NOERROR: 1636 err = 0; 1637 break; 1638 default: 1639 panic("wddump: unknown error type %d", err); 1640 } 1641 if (err != 0) { 1642 printf("\n"); 1643 return err; 1644 } 1645 #else /* WD_DUMP_NOT_TRUSTED */ 1646 /* Let's just talk about this first... */ 1647 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1648 unit, va, cylin, head, sector); 1649 delay(500 * 1000); /* half a second */ 1650 #endif 1651 1652 wddoingadump = 0; 1653 return 0; 1654 } 1655 1656 #ifdef HAS_BAD144_HANDLING 1657 /* 1658 * Internalize the bad sector table. 1659 */ 1660 void 1661 bad144intern(struct wd_softc *wd) 1662 { 1663 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1664 struct disklabel *lp = wd->sc_dk.dk_label; 1665 int i = 0; 1666 1667 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1668 1669 for (; i < NBT_BAD; i++) { 1670 if (bt->bt_bad[i].bt_cyl == 0xffff) 1671 break; 1672 wd->sc_badsect[i] = 1673 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1674 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1675 (bt->bt_bad[i].bt_trksec & 0xff); 1676 } 1677 for (; i < NBT_BAD+1; i++) 1678 wd->sc_badsect[i] = -1; 1679 } 1680 #endif 1681 1682 static void 1683 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1684 { 1685 prop_dictionary_t disk_info, odisk_info, geom; 1686 const char *cp; 1687 1688 disk_info = prop_dictionary_create(); 1689 1690 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1691 cp = "ST506"; 1692 else { 1693 /* XXX Should have a case for ATA here, too. */ 1694 cp = "ESDI"; 1695 } 1696 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1697 1698 geom = prop_dictionary_create(); 1699 1700 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1701 1702 prop_dictionary_set_uint32(geom, "sector-size", 1703 DEV_BSIZE /* XXX 512? */); 1704 1705 prop_dictionary_set_uint16(geom, "sectors-per-track", 1706 wd->sc_params.atap_sectors); 1707 1708 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1709 wd->sc_params.atap_heads); 1710 1711 if (wd->sc_flags & WDF_LBA) 1712 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1713 wd->sc_capacity / 1714 (wd->sc_params.atap_heads * 1715 wd->sc_params.atap_sectors)); 1716 else 1717 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1718 wd->sc_params.atap_cylinders); 1719 1720 prop_dictionary_set(disk_info, "geometry", geom); 1721 prop_object_release(geom); 1722 1723 prop_dictionary_set(device_properties(wd->sc_dev), 1724 "disk-info", disk_info); 1725 1726 /* 1727 * Don't release disk_info here; we keep a reference to it. 1728 * disk_detach() will release it when we go away. 1729 */ 1730 1731 odisk_info = wd->sc_dk.dk_info; 1732 wd->sc_dk.dk_info = disk_info; 1733 if (odisk_info) 1734 prop_object_release(odisk_info); 1735 } 1736 1737 int 1738 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1739 { 1740 1741 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1742 case CMD_AGAIN: 1743 return 1; 1744 case CMD_ERR: 1745 /* 1746 * We `know' there's a drive here; just assume it's old. 1747 * This geometry is only used to read the MBR and print a 1748 * (false) attach message. 1749 */ 1750 strncpy(params->atap_model, "ST506", 1751 sizeof params->atap_model); 1752 params->atap_config = ATA_CFG_FIXED; 1753 params->atap_cylinders = 1024; 1754 params->atap_heads = 8; 1755 params->atap_sectors = 17; 1756 params->atap_multi = 1; 1757 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1758 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1759 /* FALLTHROUGH */ 1760 case CMD_OK: 1761 wd_params_to_properties(wd, params); 1762 return 0; 1763 default: 1764 panic("wd_get_params: bad return code from ata_get_params"); 1765 /* NOTREACHED */ 1766 } 1767 } 1768 1769 int 1770 wd_getcache(struct wd_softc *wd, int *bitsp) 1771 { 1772 struct ataparams params; 1773 1774 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1775 return EIO; 1776 if (params.atap_cmd_set1 == 0x0000 || 1777 params.atap_cmd_set1 == 0xffff || 1778 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1779 *bitsp = 0; 1780 return 0; 1781 } 1782 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1783 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1784 *bitsp |= DKCACHE_WRITE; 1785 1786 return 0; 1787 } 1788 1789 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1790 1791 int 1792 wd_setcache(struct wd_softc *wd, int bits) 1793 { 1794 struct ataparams params; 1795 struct ata_command ata_c; 1796 1797 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1798 return EIO; 1799 1800 if (params.atap_cmd_set1 == 0x0000 || 1801 params.atap_cmd_set1 == 0xffff || 1802 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1803 return EOPNOTSUPP; 1804 1805 if ((bits & DKCACHE_READ) == 0 || 1806 (bits & DKCACHE_SAVE) != 0) 1807 return EOPNOTSUPP; 1808 1809 memset(&ata_c, 0, sizeof(struct ata_command)); 1810 ata_c.r_command = SET_FEATURES; 1811 ata_c.r_st_bmask = 0; 1812 ata_c.r_st_pmask = 0; 1813 ata_c.timeout = 30000; /* 30s timeout */ 1814 ata_c.flags = AT_WAIT; 1815 if (bits & DKCACHE_WRITE) 1816 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1817 else 1818 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1819 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1820 aprint_error_dev(wd->sc_dev, 1821 "wd_setcache command not complete\n"); 1822 return EIO; 1823 } 1824 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1825 char sbuf[sizeof(at_errbits) + 64]; 1826 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1827 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1828 return EIO; 1829 } 1830 return 0; 1831 } 1832 1833 static int 1834 wd_standby(struct wd_softc *wd, int flags) 1835 { 1836 struct ata_command ata_c; 1837 1838 memset(&ata_c, 0, sizeof(struct ata_command)); 1839 ata_c.r_command = WDCC_STANDBY_IMMED; 1840 ata_c.r_st_bmask = WDCS_DRDY; 1841 ata_c.r_st_pmask = WDCS_DRDY; 1842 ata_c.flags = flags; 1843 ata_c.timeout = 30000; /* 30s timeout */ 1844 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1845 aprint_error_dev(wd->sc_dev, 1846 "standby immediate command didn't complete\n"); 1847 return EIO; 1848 } 1849 if (ata_c.flags & AT_ERROR) { 1850 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1851 return ENODEV; 1852 } 1853 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1854 char sbuf[sizeof(at_errbits) + 64]; 1855 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1856 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1857 return EIO; 1858 } 1859 return 0; 1860 } 1861 1862 int 1863 wd_flushcache(struct wd_softc *wd, int flags) 1864 { 1865 struct ata_command ata_c; 1866 1867 /* 1868 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1869 * only ATA-2 and still support it. 1870 */ 1871 if (wd->drvp->ata_vers < 4 && 1872 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1873 wd->sc_params.atap_cmd_set2 == 0xffff)) 1874 return ENODEV; 1875 memset(&ata_c, 0, sizeof(struct ata_command)); 1876 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1877 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1878 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1879 else 1880 ata_c.r_command = WDCC_FLUSHCACHE; 1881 ata_c.r_st_bmask = WDCS_DRDY; 1882 ata_c.r_st_pmask = WDCS_DRDY; 1883 ata_c.flags = flags; 1884 ata_c.timeout = 30000; /* 30s timeout */ 1885 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1886 aprint_error_dev(wd->sc_dev, 1887 "flush cache command didn't complete\n"); 1888 return EIO; 1889 } 1890 if (ata_c.flags & AT_ERROR) { 1891 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1892 return ENODEV; 1893 } 1894 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1895 char sbuf[sizeof(at_errbits) + 64]; 1896 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1897 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1898 sbuf); 1899 return EIO; 1900 } 1901 return 0; 1902 } 1903 1904 bool 1905 wd_shutdown(device_t dev, int how) 1906 { 1907 struct wd_softc *wd = device_private(dev); 1908 1909 /* the adapter needs to be enabled */ 1910 if (wd->atabus->ata_addref(wd->drvp)) 1911 return true; /* no need to complain */ 1912 1913 wd_flushcache(wd, AT_POLL); 1914 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1915 wd_standby(wd, AT_POLL); 1916 return true; 1917 } 1918 1919 /* 1920 * Allocate space for a ioctl queue structure. Mostly taken from 1921 * scsipi_ioctl.c 1922 */ 1923 struct wd_ioctl * 1924 wi_get(void) 1925 { 1926 struct wd_ioctl *wi; 1927 int s; 1928 1929 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1930 buf_init(&wi->wi_bp); 1931 s = splbio(); 1932 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1933 splx(s); 1934 return (wi); 1935 } 1936 1937 /* 1938 * Free an ioctl structure and remove it from our list 1939 */ 1940 1941 void 1942 wi_free(struct wd_ioctl *wi) 1943 { 1944 int s; 1945 1946 s = splbio(); 1947 LIST_REMOVE(wi, wi_list); 1948 splx(s); 1949 buf_destroy(&wi->wi_bp); 1950 free(wi, M_TEMP); 1951 } 1952 1953 /* 1954 * Find a wd_ioctl structure based on the struct buf. 1955 */ 1956 1957 struct wd_ioctl * 1958 wi_find(struct buf *bp) 1959 { 1960 struct wd_ioctl *wi; 1961 int s; 1962 1963 s = splbio(); 1964 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1965 if (bp == &wi->wi_bp) 1966 break; 1967 splx(s); 1968 return (wi); 1969 } 1970 1971 /* 1972 * Ioctl pseudo strategy routine 1973 * 1974 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1975 * happens here is: 1976 * 1977 * - wdioctl() queues a wd_ioctl structure. 1978 * 1979 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1980 * user space I/O is required. If physio() is called, physio() eventually 1981 * calls wdioctlstrategy(). 1982 * 1983 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1984 * to perform the actual command 1985 * 1986 * The reason for the use of the pseudo strategy routine is because 1987 * when doing I/O to/from user space, physio _really_ wants to be in 1988 * the loop. We could put the entire buffer into the ioctl request 1989 * structure, but that won't scale if we want to do things like download 1990 * microcode. 1991 */ 1992 1993 void 1994 wdioctlstrategy(struct buf *bp) 1995 { 1996 struct wd_ioctl *wi; 1997 struct ata_command ata_c; 1998 int error = 0; 1999 2000 wi = wi_find(bp); 2001 if (wi == NULL) { 2002 printf("wdioctlstrategy: " 2003 "No matching ioctl request found in queue\n"); 2004 error = EINVAL; 2005 goto bad; 2006 } 2007 2008 memset(&ata_c, 0, sizeof(ata_c)); 2009 2010 /* 2011 * Abort if physio broke up the transfer 2012 */ 2013 2014 if (bp->b_bcount != wi->wi_atareq.datalen) { 2015 printf("physio split wd ioctl request... cannot proceed\n"); 2016 error = EIO; 2017 goto bad; 2018 } 2019 2020 /* 2021 * Abort if we didn't get a buffer size that was a multiple of 2022 * our sector size (or was larger than NBBY) 2023 */ 2024 2025 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2026 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2027 (1 << NBBY)) { 2028 error = EINVAL; 2029 goto bad; 2030 } 2031 2032 /* 2033 * Make sure a timeout was supplied in the ioctl request 2034 */ 2035 2036 if (wi->wi_atareq.timeout == 0) { 2037 error = EINVAL; 2038 goto bad; 2039 } 2040 2041 if (wi->wi_atareq.flags & ATACMD_READ) 2042 ata_c.flags |= AT_READ; 2043 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2044 ata_c.flags |= AT_WRITE; 2045 2046 if (wi->wi_atareq.flags & ATACMD_READREG) 2047 ata_c.flags |= AT_READREG; 2048 2049 ata_c.flags |= AT_WAIT; 2050 2051 ata_c.timeout = wi->wi_atareq.timeout; 2052 ata_c.r_command = wi->wi_atareq.command; 2053 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2054 ata_c.r_cyl = wi->wi_atareq.cylinder; 2055 ata_c.r_sector = wi->wi_atareq.sec_num; 2056 ata_c.r_count = wi->wi_atareq.sec_count; 2057 ata_c.r_features = wi->wi_atareq.features; 2058 ata_c.r_st_bmask = WDCS_DRDY; 2059 ata_c.r_st_pmask = WDCS_DRDY; 2060 ata_c.data = wi->wi_bp.b_data; 2061 ata_c.bcount = wi->wi_bp.b_bcount; 2062 2063 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2064 != ATACMD_COMPLETE) { 2065 wi->wi_atareq.retsts = ATACMD_ERROR; 2066 goto bad; 2067 } 2068 2069 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2070 if (ata_c.flags & AT_ERROR) { 2071 wi->wi_atareq.retsts = ATACMD_ERROR; 2072 wi->wi_atareq.error = ata_c.r_error; 2073 } else if (ata_c.flags & AT_DF) 2074 wi->wi_atareq.retsts = ATACMD_DF; 2075 else 2076 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2077 } else { 2078 wi->wi_atareq.retsts = ATACMD_OK; 2079 if (wi->wi_atareq.flags & ATACMD_READREG) { 2080 wi->wi_atareq.head = ata_c.r_head ; 2081 wi->wi_atareq.cylinder = ata_c.r_cyl; 2082 wi->wi_atareq.sec_num = ata_c.r_sector; 2083 wi->wi_atareq.sec_count = ata_c.r_count; 2084 wi->wi_atareq.features = ata_c.r_features; 2085 wi->wi_atareq.error = ata_c.r_error; 2086 } 2087 } 2088 2089 bp->b_error = 0; 2090 biodone(bp); 2091 return; 2092 bad: 2093 bp->b_error = error; 2094 biodone(bp); 2095 } 2096
Indexes created Mon Sep 29 03:10:08 GMT 2025