wd.c revision 1.384
1 /* $NetBSD: wd.c,v 1.384 2010/02/24 22:37:57 dyoung 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 1.384 2010/02/24 22:37:57 dyoung 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"); 284 285 /* read our drive info */ 286 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 287 aprint_error("\n%s: IDENTIFY failed\n", device_xname(self)); 288 return; 289 } 290 291 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 292 i < sizeof(wd->sc_params.atap_model); i++) { 293 c = *p++; 294 if (c == '\0') 295 break; 296 if (c != ' ') { 297 if (blank) { 298 *q++ = ' '; 299 blank = 0; 300 } 301 *q++ = c; 302 } else 303 blank = 1; 304 } 305 *q++ = '\0'; 306 307 aprint_normal(": <%s>\n", tbuf); 308 309 wdq = wd_lookup_quirks(tbuf); 310 if (wdq != NULL) 311 wd->sc_quirks = wdq->wdq_quirks; 312 313 if (wd->sc_quirks != 0) { 314 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 315 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 316 aprint_normal_dev(self, "quirks %s\n", sbuf); 317 } 318 319 if ((wd->sc_params.atap_multi & 0xff) > 1) { 320 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 321 } else { 322 wd->sc_multi = 1; 323 } 324 325 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 326 wd->sc_multi); 327 328 /* 48-bit LBA addressing */ 329 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 330 wd->sc_flags |= WDF_LBA48; 331 332 /* Prior to ATA-4, LBA was optional. */ 333 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 334 wd->sc_flags |= WDF_LBA; 335 #if 0 336 /* ATA-4 requires LBA. */ 337 if (wd->sc_params.atap_ataversion != 0xffff && 338 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 339 wd->sc_flags |= WDF_LBA; 340 #endif 341 342 if ((wd->sc_flags & WDF_LBA48) != 0) { 343 aprint_verbose(" LBA48 addressing\n"); 344 wd->sc_capacity = 345 ((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) | 346 ((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) | 347 ((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) | 348 ((u_int64_t) wd->sc_params.atap_max_lba[0] << 0); 349 wd->sc_capacity28 = 350 (wd->sc_params.atap_capacity[1] << 16) | 351 wd->sc_params.atap_capacity[0]; 352 } else if ((wd->sc_flags & WDF_LBA) != 0) { 353 aprint_verbose(" LBA addressing\n"); 354 wd->sc_capacity28 = wd->sc_capacity = 355 (wd->sc_params.atap_capacity[1] << 16) | 356 wd->sc_params.atap_capacity[0]; 357 } else { 358 aprint_verbose(" chs addressing\n"); 359 wd->sc_capacity28 = wd->sc_capacity = 360 wd->sc_params.atap_cylinders * 361 wd->sc_params.atap_heads * 362 wd->sc_params.atap_sectors; 363 } 364 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 365 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 366 "%d bytes/sect x %llu sectors\n", 367 pbuf, 368 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 369 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 370 wd->sc_params.atap_cylinders, 371 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 372 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 373 374 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 375 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 376 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 377 /* 378 * Initialize and attach the disk structure. 379 */ 380 /* we fill in dk_info later */ 381 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 382 disk_attach(&wd->sc_dk); 383 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 384 #if NRND > 0 385 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 386 RND_TYPE_DISK, 0); 387 #endif 388 389 /* Discover wedges on this disk. */ 390 dkwedge_discover(&wd->sc_dk); 391 392 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 393 aprint_error_dev(self, "couldn't establish power handler\n"); 394 } 395 396 static bool 397 wd_suspend(device_t dv, const pmf_qual_t *qual) 398 { 399 struct wd_softc *sc = device_private(dv); 400 401 wd_flushcache(sc, AT_WAIT); 402 wd_standby(sc, AT_WAIT); 403 return true; 404 } 405 406 int 407 wddetach(device_t self, int flags) 408 { 409 struct wd_softc *sc = device_private(self); 410 int bmaj, cmaj, i, mn, rc, s; 411 412 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 413 return rc; 414 415 /* locate the major number */ 416 bmaj = bdevsw_lookup_major(&wd_bdevsw); 417 cmaj = cdevsw_lookup_major(&wd_cdevsw); 418 419 /* Nuke the vnodes for any open instances. */ 420 for (i = 0; i < MAXPARTITIONS; i++) { 421 mn = WDMINOR(device_unit(self), i); 422 vdevgone(bmaj, mn, mn, VBLK); 423 vdevgone(cmaj, mn, mn, VCHR); 424 } 425 426 /* Delete all of our wedges. */ 427 dkwedge_delall(&sc->sc_dk); 428 429 s = splbio(); 430 431 /* Kill off any queued buffers. */ 432 bufq_drain(sc->sc_q); 433 434 bufq_free(sc->sc_q); 435 sc->atabus->ata_killpending(sc->drvp); 436 437 splx(s); 438 439 /* Detach disk. */ 440 disk_detach(&sc->sc_dk); 441 disk_destroy(&sc->sc_dk); 442 443 #ifdef WD_SOFTBADSECT 444 /* Clean out the bad sector list */ 445 while (!SLIST_EMPTY(&sc->sc_bslist)) { 446 void *head = SLIST_FIRST(&sc->sc_bslist); 447 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 448 free(head, M_TEMP); 449 } 450 sc->sc_bscount = 0; 451 #endif 452 453 pmf_device_deregister(self); 454 455 #if NRND > 0 456 /* Unhook the entropy source. */ 457 rnd_detach_source(&sc->rnd_source); 458 #endif 459 460 callout_destroy(&sc->sc_restart_ch); 461 462 sc->drvp->drive_flags = 0; /* no drive any more here */ 463 464 return (0); 465 } 466 467 /* 468 * Read/write routine for a buffer. Validates the arguments and schedules the 469 * transfer. Does not wait for the transfer to complete. 470 */ 471 void 472 wdstrategy(struct buf *bp) 473 { 474 struct wd_softc *wd = 475 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 476 struct disklabel *lp = wd->sc_dk.dk_label; 477 daddr_t blkno; 478 int s; 479 480 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 481 DEBUG_XFERS); 482 483 /* Valid request? */ 484 if (bp->b_blkno < 0 || 485 (bp->b_bcount % lp->d_secsize) != 0 || 486 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 487 bp->b_error = EINVAL; 488 goto done; 489 } 490 491 /* If device invalidated (e.g. media change, door open, 492 * device suspension), then error. 493 */ 494 if ((wd->sc_flags & WDF_LOADED) == 0 || !device_is_active(wd->sc_dev)) { 495 bp->b_error = EIO; 496 goto done; 497 } 498 499 /* If it's a null transfer, return immediately. */ 500 if (bp->b_bcount == 0) 501 goto done; 502 503 /* 504 * Do bounds checking, adjust transfer. if error, process. 505 * If end of partition, just return. 506 */ 507 if (WDPART(bp->b_dev) == RAW_PART) { 508 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 509 wd->sc_capacity) <= 0) 510 goto done; 511 } else { 512 if (bounds_check_with_label(&wd->sc_dk, bp, 513 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 514 goto done; 515 } 516 517 /* 518 * Now convert the block number to absolute and put it in 519 * terms of the device's logical block size. 520 */ 521 if (lp->d_secsize >= DEV_BSIZE) 522 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 523 else 524 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 525 526 if (WDPART(bp->b_dev) != RAW_PART) 527 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 528 529 bp->b_rawblkno = blkno; 530 531 #ifdef WD_SOFTBADSECT 532 /* 533 * If the transfer about to be attempted contains only a block that 534 * is known to be bad then return an error for the transfer without 535 * even attempting to start a transfer up under the premis that we 536 * will just end up doing more retries for a transfer that will end 537 * up failing again. 538 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 539 */ 540 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 541 struct disk_badsectors *dbs; 542 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 543 544 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 545 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 546 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 547 bp->b_error = EIO; 548 goto done; 549 } 550 } 551 #endif 552 553 /* Queue transfer on drive, activate drive and controller if idle. */ 554 s = splbio(); 555 bufq_put(wd->sc_q, bp); 556 wdstart(wd); 557 splx(s); 558 return; 559 done: 560 /* Toss transfer; we're done early. */ 561 bp->b_resid = bp->b_bcount; 562 biodone(bp); 563 } 564 565 /* 566 * Queue a drive for I/O. 567 */ 568 void 569 wdstart(void *arg) 570 { 571 struct wd_softc *wd = arg; 572 struct buf *bp = NULL; 573 574 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 575 DEBUG_XFERS); 576 while (wd->openings > 0) { 577 578 /* Is there a buf for us ? */ 579 if ((bp = bufq_get(wd->sc_q)) == NULL) 580 return; 581 582 /* 583 * Make the command. First lock the device 584 */ 585 wd->openings--; 586 587 wd->retries = 0; 588 wdstart1(wd, bp); 589 } 590 } 591 592 static void 593 wd_split_mod15_write(struct buf *bp) 594 { 595 struct buf *obp = bp->b_private; 596 struct wd_softc *sc = 597 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 598 int s; 599 600 if (__predict_false(bp->b_error != 0)) { 601 /* 602 * Propagate the error. If this was the first half of 603 * the original transfer, make sure to account for that 604 * in the residual. 605 */ 606 if (bp->b_data == obp->b_data) 607 bp->b_resid += bp->b_bcount; 608 goto done; 609 } 610 611 /* 612 * If this was the second half of the transfer, we're all done! 613 */ 614 if (bp->b_data != obp->b_data) 615 goto done; 616 617 /* 618 * Advance the pointer to the second half and issue that command 619 * using the same opening. 620 */ 621 bp->b_flags = obp->b_flags; 622 bp->b_oflags = obp->b_oflags; 623 bp->b_cflags = obp->b_cflags; 624 bp->b_data = (char *)bp->b_data + bp->b_bcount; 625 bp->b_blkno += (bp->b_bcount / 512); 626 bp->b_rawblkno += (bp->b_bcount / 512); 627 s = splbio(); 628 wdstart1(sc, bp); 629 splx(s); 630 return; 631 632 done: 633 obp->b_error = bp->b_error; 634 obp->b_resid = bp->b_resid; 635 s = splbio(); 636 putiobuf(bp); 637 biodone(obp); 638 sc->openings++; 639 splx(s); 640 /* wddone() will call wdstart() */ 641 } 642 643 void 644 wdstart1(struct wd_softc *wd, struct buf *bp) 645 { 646 647 /* 648 * Deal with the "split mod15 write" quirk. We just divide the 649 * transfer in two, doing the first half and then then second half 650 * with the same command opening. 651 * 652 * Note we MUST do this here, because we can't let insertion 653 * into the bufq cause the transfers to be re-merged. 654 */ 655 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 656 (bp->b_flags & B_READ) == 0 && 657 bp->b_bcount > 512 && 658 ((bp->b_bcount / 512) % 15) == 1)) { 659 struct buf *nbp; 660 661 /* already at splbio */ 662 nbp = getiobuf(NULL, false); 663 if (__predict_false(nbp == NULL)) { 664 /* No memory -- fail the iop. */ 665 bp->b_error = ENOMEM; 666 bp->b_resid = bp->b_bcount; 667 biodone(bp); 668 wd->openings++; 669 return; 670 } 671 672 nbp->b_error = 0; 673 nbp->b_proc = bp->b_proc; 674 nbp->b_dev = bp->b_dev; 675 676 nbp->b_bcount = bp->b_bcount / 2; 677 nbp->b_bufsize = bp->b_bcount / 2; 678 nbp->b_data = bp->b_data; 679 680 nbp->b_blkno = bp->b_blkno; 681 nbp->b_rawblkno = bp->b_rawblkno; 682 683 nbp->b_flags = bp->b_flags; 684 nbp->b_oflags = bp->b_oflags; 685 nbp->b_cflags = bp->b_cflags; 686 nbp->b_iodone = wd_split_mod15_write; 687 688 /* Put ptr to orig buf in b_private and use new buf */ 689 nbp->b_private = bp; 690 691 BIO_COPYPRIO(nbp, bp); 692 693 bp = nbp; 694 } 695 696 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 697 wd->sc_wdc_bio.bcount = bp->b_bcount; 698 wd->sc_wdc_bio.databuf = bp->b_data; 699 wd->sc_wdc_bio.blkdone =0; 700 wd->sc_bp = bp; 701 /* 702 * If we're retrying, retry in single-sector mode. This will give us 703 * the sector number of the problem, and will eventually allow the 704 * transfer to succeed. 705 */ 706 if (wd->retries >= WDIORETRIES_SINGLE) 707 wd->sc_wdc_bio.flags = ATA_SINGLE; 708 else 709 wd->sc_wdc_bio.flags = 0; 710 if (wd->sc_flags & WDF_LBA48 && 711 (wd->sc_wdc_bio.blkno + 712 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 713 wd->sc_capacity28) 714 wd->sc_wdc_bio.flags |= ATA_LBA48; 715 if (wd->sc_flags & WDF_LBA) 716 wd->sc_wdc_bio.flags |= ATA_LBA; 717 if (bp->b_flags & B_READ) 718 wd->sc_wdc_bio.flags |= ATA_READ; 719 /* Instrumentation. */ 720 disk_busy(&wd->sc_dk); 721 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 722 case ATACMD_TRY_AGAIN: 723 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 724 break; 725 case ATACMD_QUEUED: 726 case ATACMD_COMPLETE: 727 break; 728 default: 729 panic("wdstart1: bad return code from ata_bio()"); 730 } 731 } 732 733 void 734 wddone(void *v) 735 { 736 struct wd_softc *wd = device_private(v); 737 struct buf *bp = wd->sc_bp; 738 const char *errmsg; 739 int do_perror = 0; 740 741 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 742 DEBUG_XFERS); 743 if (bp == NULL) 744 return; 745 bp->b_resid = wd->sc_wdc_bio.bcount; 746 switch (wd->sc_wdc_bio.error) { 747 case ERR_DMA: 748 errmsg = "DMA error"; 749 goto retry; 750 case ERR_DF: 751 errmsg = "device fault"; 752 goto retry; 753 case TIMEOUT: 754 errmsg = "device timeout"; 755 goto retry; 756 case ERR_RESET: 757 errmsg = "channel reset"; 758 goto retry2; 759 case ERROR: 760 /* Don't care about media change bits */ 761 if (wd->sc_wdc_bio.r_error != 0 && 762 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 763 goto noerror; 764 errmsg = "error"; 765 do_perror = 1; 766 retry: /* Just reset and retry. Can we do more ? */ 767 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 768 retry2: 769 diskerr(bp, "wd", errmsg, LOG_PRINTF, 770 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 771 if (wd->retries < WDIORETRIES) 772 printf(", retrying"); 773 printf("\n"); 774 if (do_perror) 775 wdperror(wd); 776 if (wd->retries < WDIORETRIES) { 777 wd->retries++; 778 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 779 wdrestart, wd); 780 return; 781 } 782 783 #ifdef WD_SOFTBADSECT 784 /* 785 * Not all errors indicate a failed block but those that do, 786 * put the block on the bad-block list for the device. Only 787 * do this for reads because the drive should do it for writes, 788 * itself, according to Manuel. 789 */ 790 if ((bp->b_flags & B_READ) && 791 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 792 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 793 struct disk_badsectors *dbs; 794 795 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 796 dbs->dbs_min = bp->b_rawblkno; 797 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 798 microtime(&dbs->dbs_failedat); 799 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 800 wd->sc_bscount++; 801 } 802 #endif 803 bp->b_error = EIO; 804 break; 805 case NOERROR: 806 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 807 aprint_error_dev(wd->sc_dev, 808 "soft error (corrected)\n"); 809 break; 810 case ERR_NODEV: 811 bp->b_error = EIO; 812 break; 813 } 814 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 815 (bp->b_flags & B_READ)); 816 #if NRND > 0 817 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 818 #endif 819 /* XXX Yuck, but we don't want to increment openings in this case */ 820 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 821 biodone(bp); 822 else { 823 biodone(bp); 824 wd->openings++; 825 } 826 wdstart(wd); 827 } 828 829 void 830 wdrestart(void *v) 831 { 832 struct wd_softc *wd = v; 833 struct buf *bp = wd->sc_bp; 834 int s; 835 836 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 837 DEBUG_XFERS); 838 s = splbio(); 839 wdstart1(v, bp); 840 splx(s); 841 } 842 843 int 844 wdread(dev_t dev, struct uio *uio, int flags) 845 { 846 847 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 848 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 849 } 850 851 int 852 wdwrite(dev_t dev, struct uio *uio, int flags) 853 { 854 855 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 856 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 857 } 858 859 int 860 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 861 { 862 struct wd_softc *wd; 863 int part, error; 864 865 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 866 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 867 if (wd == NULL) 868 return (ENXIO); 869 870 if (! device_is_active(wd->sc_dev)) 871 return (ENODEV); 872 873 part = WDPART(dev); 874 875 mutex_enter(&wd->sc_dk.dk_openlock); 876 877 /* 878 * If there are wedges, and this is not RAW_PART, then we 879 * need to fail. 880 */ 881 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 882 error = EBUSY; 883 goto bad1; 884 } 885 886 /* 887 * If this is the first open of this device, add a reference 888 * to the adapter. 889 */ 890 if (wd->sc_dk.dk_openmask == 0 && 891 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 892 goto bad1; 893 894 if (wd->sc_dk.dk_openmask != 0) { 895 /* 896 * If any partition is open, but the disk has been invalidated, 897 * disallow further opens. 898 */ 899 if ((wd->sc_flags & WDF_LOADED) == 0) { 900 error = EIO; 901 goto bad2; 902 } 903 } else { 904 if ((wd->sc_flags & WDF_LOADED) == 0) { 905 wd->sc_flags |= WDF_LOADED; 906 907 /* Load the physical device parameters. */ 908 wd_get_params(wd, AT_WAIT, &wd->sc_params); 909 910 /* Load the partition info if not already loaded. */ 911 wdgetdisklabel(wd); 912 } 913 } 914 915 /* Check that the partition exists. */ 916 if (part != RAW_PART && 917 (part >= wd->sc_dk.dk_label->d_npartitions || 918 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 919 error = ENXIO; 920 goto bad2; 921 } 922 923 /* Insure only one open at a time. */ 924 switch (fmt) { 925 case S_IFCHR: 926 wd->sc_dk.dk_copenmask |= (1 << part); 927 break; 928 case S_IFBLK: 929 wd->sc_dk.dk_bopenmask |= (1 << part); 930 break; 931 } 932 wd->sc_dk.dk_openmask = 933 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 934 935 mutex_exit(&wd->sc_dk.dk_openlock); 936 return 0; 937 938 bad2: 939 if (wd->sc_dk.dk_openmask == 0) 940 wd->atabus->ata_delref(wd->drvp); 941 bad1: 942 mutex_exit(&wd->sc_dk.dk_openlock); 943 return error; 944 } 945 946 /* 947 * Caller must hold wd->sc_dk.dk_openlock. 948 */ 949 static int 950 wdlastclose(device_t self) 951 { 952 struct wd_softc *wd = device_private(self); 953 954 wd_flushcache(wd, AT_WAIT); 955 956 if (! (wd->sc_flags & WDF_KLABEL)) 957 wd->sc_flags &= ~WDF_LOADED; 958 959 wd->atabus->ata_delref(wd->drvp); 960 961 return 0; 962 } 963 964 int 965 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 966 { 967 struct wd_softc *wd = 968 device_lookup_private(&wd_cd, WDUNIT(dev)); 969 int part = WDPART(dev); 970 971 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 972 973 mutex_enter(&wd->sc_dk.dk_openlock); 974 975 switch (fmt) { 976 case S_IFCHR: 977 wd->sc_dk.dk_copenmask &= ~(1 << part); 978 break; 979 case S_IFBLK: 980 wd->sc_dk.dk_bopenmask &= ~(1 << part); 981 break; 982 } 983 wd->sc_dk.dk_openmask = 984 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 985 986 if (wd->sc_dk.dk_openmask == 0) 987 wdlastclose(wd->sc_dev); 988 989 mutex_exit(&wd->sc_dk.dk_openlock); 990 return 0; 991 } 992 993 void 994 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 995 { 996 997 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 998 memset(lp, 0, sizeof(struct disklabel)); 999 1000 lp->d_secsize = DEV_BSIZE; 1001 lp->d_ntracks = wd->sc_params.atap_heads; 1002 lp->d_nsectors = wd->sc_params.atap_sectors; 1003 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1004 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1005 wd->sc_params.atap_cylinders; 1006 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1007 1008 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1009 lp->d_type = DTYPE_ST506; 1010 else 1011 lp->d_type = DTYPE_ESDI; 1012 1013 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1014 strncpy(lp->d_packname, "fictitious", 16); 1015 if (wd->sc_capacity > UINT32_MAX) 1016 lp->d_secperunit = UINT32_MAX; 1017 else 1018 lp->d_secperunit = wd->sc_capacity; 1019 lp->d_rpm = 3600; 1020 lp->d_interleave = 1; 1021 lp->d_flags = 0; 1022 1023 lp->d_partitions[RAW_PART].p_offset = 0; 1024 lp->d_partitions[RAW_PART].p_size = 1025 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1026 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1027 lp->d_npartitions = RAW_PART + 1; 1028 1029 lp->d_magic = DISKMAGIC; 1030 lp->d_magic2 = DISKMAGIC; 1031 lp->d_checksum = dkcksum(lp); 1032 } 1033 1034 /* 1035 * Fabricate a default disk label, and try to read the correct one. 1036 */ 1037 void 1038 wdgetdisklabel(struct wd_softc *wd) 1039 { 1040 struct disklabel *lp = wd->sc_dk.dk_label; 1041 const char *errstring; 1042 int s; 1043 1044 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1045 1046 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1047 1048 wdgetdefaultlabel(wd, lp); 1049 1050 wd->sc_badsect[0] = -1; 1051 1052 if (wd->drvp->state > RESET) { 1053 s = splbio(); 1054 wd->drvp->drive_flags |= DRIVE_RESET; 1055 splx(s); 1056 } 1057 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1058 RAW_PART), wdstrategy, lp, 1059 wd->sc_dk.dk_cpulabel); 1060 if (errstring) { 1061 /* 1062 * This probably happened because the drive's default 1063 * geometry doesn't match the DOS geometry. We 1064 * assume the DOS geometry is now in the label and try 1065 * again. XXX This is a kluge. 1066 */ 1067 if (wd->drvp->state > RESET) { 1068 s = splbio(); 1069 wd->drvp->drive_flags |= DRIVE_RESET; 1070 splx(s); 1071 } 1072 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1073 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1074 } 1075 if (errstring) { 1076 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1077 return; 1078 } 1079 1080 if (wd->drvp->state > RESET) { 1081 s = splbio(); 1082 wd->drvp->drive_flags |= DRIVE_RESET; 1083 splx(s); 1084 } 1085 #ifdef HAS_BAD144_HANDLING 1086 if ((lp->d_flags & D_BADSECT) != 0) 1087 bad144intern(wd); 1088 #endif 1089 } 1090 1091 void 1092 wdperror(const struct wd_softc *wd) 1093 { 1094 static const char *const errstr0_3[] = {"address mark not found", 1095 "track 0 not found", "aborted command", "media change requested", 1096 "id not found", "media changed", "uncorrectable data error", 1097 "bad block detected"}; 1098 static const char *const errstr4_5[] = { 1099 "obsolete (address mark not found)", 1100 "no media/write protected", "aborted command", 1101 "media change requested", "id not found", "media changed", 1102 "uncorrectable data error", "interface CRC error"}; 1103 const char *const *errstr; 1104 int i; 1105 const char *sep = ""; 1106 1107 const char *devname = device_xname(wd->sc_dev); 1108 struct ata_drive_datas *drvp = wd->drvp; 1109 int errno = wd->sc_wdc_bio.r_error; 1110 1111 if (drvp->ata_vers >= 4) 1112 errstr = errstr4_5; 1113 else 1114 errstr = errstr0_3; 1115 1116 printf("%s: (", devname); 1117 1118 if (errno == 0) 1119 printf("error not notified"); 1120 1121 for (i = 0; i < 8; i++) { 1122 if (errno & (1 << i)) { 1123 printf("%s%s", sep, errstr[i]); 1124 sep = ", "; 1125 } 1126 } 1127 printf(")\n"); 1128 } 1129 1130 int 1131 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1132 { 1133 struct wd_softc *wd = 1134 device_lookup_private(&wd_cd, WDUNIT(dev)); 1135 int error = 0, s; 1136 #ifdef __HAVE_OLD_DISKLABEL 1137 struct disklabel *newlabel = NULL; 1138 #endif 1139 1140 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1141 1142 if ((wd->sc_flags & WDF_LOADED) == 0) 1143 return EIO; 1144 1145 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1146 if (error != EPASSTHROUGH) 1147 return (error); 1148 1149 switch (xfer) { 1150 #ifdef HAS_BAD144_HANDLING 1151 case DIOCSBAD: 1152 if ((flag & FWRITE) == 0) 1153 return EBADF; 1154 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1155 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1156 bad144intern(wd); 1157 return 0; 1158 #endif 1159 #ifdef WD_SOFTBADSECT 1160 case DIOCBSLIST : 1161 { 1162 u_int32_t count, missing, skip; 1163 struct disk_badsecinfo dbsi; 1164 struct disk_badsectors *dbs; 1165 size_t available; 1166 uint8_t *laddr; 1167 1168 dbsi = *(struct disk_badsecinfo *)addr; 1169 missing = wd->sc_bscount; 1170 count = 0; 1171 available = dbsi.dbsi_bufsize; 1172 skip = dbsi.dbsi_skip; 1173 laddr = (uint8_t *)dbsi.dbsi_buffer; 1174 1175 /* 1176 * We start this loop with the expectation that all of the 1177 * entries will be missed and decrement this counter each 1178 * time we either skip over one (already copied out) or 1179 * we actually copy it back to user space. The structs 1180 * holding the bad sector information are copied directly 1181 * back to user space whilst the summary is returned via 1182 * the struct passed in via the ioctl. 1183 */ 1184 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1185 if (skip > 0) { 1186 missing--; 1187 skip--; 1188 continue; 1189 } 1190 if (available < sizeof(*dbs)) 1191 break; 1192 available -= sizeof(*dbs); 1193 copyout(dbs, laddr, sizeof(*dbs)); 1194 laddr += sizeof(*dbs); 1195 missing--; 1196 count++; 1197 } 1198 dbsi.dbsi_left = missing; 1199 dbsi.dbsi_copied = count; 1200 *(struct disk_badsecinfo *)addr = dbsi; 1201 return 0; 1202 } 1203 1204 case DIOCBSFLUSH : 1205 /* Clean out the bad sector list */ 1206 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1207 void *head = SLIST_FIRST(&wd->sc_bslist); 1208 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1209 free(head, M_TEMP); 1210 } 1211 wd->sc_bscount = 0; 1212 return 0; 1213 #endif 1214 case DIOCGDINFO: 1215 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1216 return 0; 1217 #ifdef __HAVE_OLD_DISKLABEL 1218 case ODIOCGDINFO: 1219 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1220 if (newlabel == NULL) 1221 return EIO; 1222 *newlabel = *(wd->sc_dk.dk_label); 1223 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1224 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1225 else 1226 error = ENOTTY; 1227 free(newlabel, M_TEMP); 1228 return error; 1229 #endif 1230 1231 case DIOCGPART: 1232 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1233 ((struct partinfo *)addr)->part = 1234 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1235 return 0; 1236 1237 case DIOCWDINFO: 1238 case DIOCSDINFO: 1239 #ifdef __HAVE_OLD_DISKLABEL 1240 case ODIOCWDINFO: 1241 case ODIOCSDINFO: 1242 #endif 1243 { 1244 struct disklabel *lp; 1245 1246 if ((flag & FWRITE) == 0) 1247 return EBADF; 1248 1249 #ifdef __HAVE_OLD_DISKLABEL 1250 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1251 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1252 if (newlabel == NULL) 1253 return EIO; 1254 memset(newlabel, 0, sizeof newlabel); 1255 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1256 lp = newlabel; 1257 } else 1258 #endif 1259 lp = (struct disklabel *)addr; 1260 1261 mutex_enter(&wd->sc_dk.dk_openlock); 1262 wd->sc_flags |= WDF_LABELLING; 1263 1264 error = setdisklabel(wd->sc_dk.dk_label, 1265 lp, /*wd->sc_dk.dk_openmask : */0, 1266 wd->sc_dk.dk_cpulabel); 1267 if (error == 0) { 1268 if (wd->drvp->state > RESET) { 1269 s = splbio(); 1270 wd->drvp->drive_flags |= DRIVE_RESET; 1271 splx(s); 1272 } 1273 if (xfer == DIOCWDINFO 1274 #ifdef __HAVE_OLD_DISKLABEL 1275 || xfer == ODIOCWDINFO 1276 #endif 1277 ) 1278 error = writedisklabel(WDLABELDEV(dev), 1279 wdstrategy, wd->sc_dk.dk_label, 1280 wd->sc_dk.dk_cpulabel); 1281 } 1282 1283 wd->sc_flags &= ~WDF_LABELLING; 1284 mutex_exit(&wd->sc_dk.dk_openlock); 1285 #ifdef __HAVE_OLD_DISKLABEL 1286 if (newlabel != NULL) 1287 free(newlabel, M_TEMP); 1288 #endif 1289 return error; 1290 } 1291 1292 case DIOCKLABEL: 1293 if (*(int *)addr) 1294 wd->sc_flags |= WDF_KLABEL; 1295 else 1296 wd->sc_flags &= ~WDF_KLABEL; 1297 return 0; 1298 1299 case DIOCWLABEL: 1300 if ((flag & FWRITE) == 0) 1301 return EBADF; 1302 if (*(int *)addr) 1303 wd->sc_flags |= WDF_WLABEL; 1304 else 1305 wd->sc_flags &= ~WDF_WLABEL; 1306 return 0; 1307 1308 case DIOCGDEFLABEL: 1309 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1310 return 0; 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 case ODIOCGDEFLABEL: 1313 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1314 if (newlabel == NULL) 1315 return EIO; 1316 wdgetdefaultlabel(wd, newlabel); 1317 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1318 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1319 else 1320 error = ENOTTY; 1321 free(newlabel, M_TEMP); 1322 return error; 1323 #endif 1324 1325 #ifdef notyet 1326 case DIOCWFORMAT: 1327 if ((flag & FWRITE) == 0) 1328 return EBADF; 1329 { 1330 register struct format_op *fop; 1331 struct iovec aiov; 1332 struct uio auio; 1333 1334 fop = (struct format_op *)addr; 1335 aiov.iov_base = fop->df_buf; 1336 aiov.iov_len = fop->df_count; 1337 auio.uio_iov = &aiov; 1338 auio.uio_iovcnt = 1; 1339 auio.uio_resid = fop->df_count; 1340 auio.uio_offset = 1341 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1342 auio.uio_vmspace = l->l_proc->p_vmspace; 1343 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1344 &auio); 1345 fop->df_count -= auio.uio_resid; 1346 fop->df_reg[0] = wdc->sc_status; 1347 fop->df_reg[1] = wdc->sc_error; 1348 return error; 1349 } 1350 #endif 1351 case DIOCGCACHE: 1352 return wd_getcache(wd, (int *)addr); 1353 1354 case DIOCSCACHE: 1355 return wd_setcache(wd, *(int *)addr); 1356 1357 case DIOCCACHESYNC: 1358 return wd_flushcache(wd, AT_WAIT); 1359 1360 case ATAIOCCOMMAND: 1361 /* 1362 * Make sure this command is (relatively) safe first 1363 */ 1364 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1365 (flag & FWRITE) == 0) 1366 return (EBADF); 1367 { 1368 struct wd_ioctl *wi; 1369 atareq_t *atareq = (atareq_t *) addr; 1370 int error1; 1371 1372 wi = wi_get(); 1373 wi->wi_softc = wd; 1374 wi->wi_atareq = *atareq; 1375 1376 if (atareq->datalen && atareq->flags & 1377 (ATACMD_READ | ATACMD_WRITE)) { 1378 void *tbuf; 1379 if (atareq->datalen < DEV_BSIZE 1380 && atareq->command == WDCC_IDENTIFY) { 1381 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1382 wi->wi_iov.iov_base = tbuf; 1383 wi->wi_iov.iov_len = DEV_BSIZE; 1384 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1385 } else { 1386 tbuf = NULL; 1387 wi->wi_iov.iov_base = atareq->databuf; 1388 wi->wi_iov.iov_len = atareq->datalen; 1389 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1390 } 1391 wi->wi_uio.uio_iov = &wi->wi_iov; 1392 wi->wi_uio.uio_iovcnt = 1; 1393 wi->wi_uio.uio_resid = atareq->datalen; 1394 wi->wi_uio.uio_offset = 0; 1395 wi->wi_uio.uio_rw = 1396 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1397 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1398 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1399 minphys, &wi->wi_uio); 1400 if (tbuf != NULL && error1 == 0) { 1401 error1 = copyout(tbuf, atareq->databuf, 1402 atareq->datalen); 1403 free(tbuf, M_TEMP); 1404 } 1405 } else { 1406 /* No need to call physio if we don't have any 1407 user data */ 1408 wi->wi_bp.b_flags = 0; 1409 wi->wi_bp.b_data = 0; 1410 wi->wi_bp.b_bcount = 0; 1411 wi->wi_bp.b_dev = 0; 1412 wi->wi_bp.b_proc = l->l_proc; 1413 wdioctlstrategy(&wi->wi_bp); 1414 error1 = wi->wi_bp.b_error; 1415 } 1416 *atareq = wi->wi_atareq; 1417 wi_free(wi); 1418 return(error1); 1419 } 1420 1421 case DIOCAWEDGE: 1422 { 1423 struct dkwedge_info *dkw = (void *) addr; 1424 1425 if ((flag & FWRITE) == 0) 1426 return (EBADF); 1427 1428 /* If the ioctl happens here, the parent is us. */ 1429 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1430 return (dkwedge_add(dkw)); 1431 } 1432 1433 case DIOCDWEDGE: 1434 { 1435 struct dkwedge_info *dkw = (void *) addr; 1436 1437 if ((flag & FWRITE) == 0) 1438 return (EBADF); 1439 1440 /* If the ioctl happens here, the parent is us. */ 1441 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1442 return (dkwedge_del(dkw)); 1443 } 1444 1445 case DIOCLWEDGES: 1446 { 1447 struct dkwedge_list *dkwl = (void *) addr; 1448 1449 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1450 } 1451 1452 case DIOCGSTRATEGY: 1453 { 1454 struct disk_strategy *dks = (void *)addr; 1455 1456 s = splbio(); 1457 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1458 sizeof(dks->dks_name)); 1459 splx(s); 1460 dks->dks_paramlen = 0; 1461 1462 return 0; 1463 } 1464 1465 case DIOCSSTRATEGY: 1466 { 1467 struct disk_strategy *dks = (void *)addr; 1468 struct bufq_state *new; 1469 struct bufq_state *old; 1470 1471 if ((flag & FWRITE) == 0) { 1472 return EBADF; 1473 } 1474 if (dks->dks_param != NULL) { 1475 return EINVAL; 1476 } 1477 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1478 error = bufq_alloc(&new, dks->dks_name, 1479 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1480 if (error) { 1481 return error; 1482 } 1483 s = splbio(); 1484 old = wd->sc_q; 1485 bufq_move(new, old); 1486 wd->sc_q = new; 1487 splx(s); 1488 bufq_free(old); 1489 1490 return 0; 1491 } 1492 1493 default: 1494 return ENOTTY; 1495 } 1496 1497 #ifdef DIAGNOSTIC 1498 panic("wdioctl: impossible"); 1499 #endif 1500 } 1501 1502 #ifdef B_FORMAT 1503 int 1504 wdformat(struct buf *bp) 1505 { 1506 1507 bp->b_flags |= B_FORMAT; 1508 return wdstrategy(bp); 1509 } 1510 #endif 1511 1512 int 1513 wdsize(dev_t dev) 1514 { 1515 struct wd_softc *wd; 1516 int part, omask; 1517 int size; 1518 1519 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1520 1521 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1522 if (wd == NULL) 1523 return (-1); 1524 1525 part = WDPART(dev); 1526 omask = wd->sc_dk.dk_openmask & (1 << part); 1527 1528 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1529 return (-1); 1530 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1531 size = -1; 1532 else 1533 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1534 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1535 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1536 return (-1); 1537 return (size); 1538 } 1539 1540 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1541 static int wddoingadump = 0; 1542 static int wddumprecalibrated = 0; 1543 1544 /* 1545 * Dump core after a system crash. 1546 */ 1547 int 1548 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1549 { 1550 struct wd_softc *wd; /* disk unit to do the I/O */ 1551 struct disklabel *lp; /* disk's disklabel */ 1552 int part, err; 1553 int nblks; /* total number of sectors left to write */ 1554 1555 /* Check if recursive dump; if so, punt. */ 1556 if (wddoingadump) 1557 return EFAULT; 1558 wddoingadump = 1; 1559 1560 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1561 if (wd == NULL) 1562 return (ENXIO); 1563 1564 part = WDPART(dev); 1565 1566 /* Convert to disk sectors. Request must be a multiple of size. */ 1567 lp = wd->sc_dk.dk_label; 1568 if ((size % lp->d_secsize) != 0) 1569 return EFAULT; 1570 nblks = size / lp->d_secsize; 1571 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1572 1573 /* Check transfer bounds against partition size. */ 1574 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1575 return EINVAL; 1576 1577 /* Offset block number to start of partition. */ 1578 blkno += lp->d_partitions[part].p_offset; 1579 1580 /* Recalibrate, if first dump transfer. */ 1581 if (wddumprecalibrated == 0) { 1582 wddumprecalibrated = 1; 1583 (*wd->atabus->ata_reset_drive)(wd->drvp, 1584 AT_POLL | AT_RST_EMERG); 1585 wd->drvp->state = RESET; 1586 } 1587 1588 wd->sc_bp = NULL; 1589 wd->sc_wdc_bio.blkno = blkno; 1590 wd->sc_wdc_bio.flags = ATA_POLL; 1591 if (wd->sc_flags & WDF_LBA48 && 1592 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1593 wd->sc_wdc_bio.flags |= ATA_LBA48; 1594 if (wd->sc_flags & WDF_LBA) 1595 wd->sc_wdc_bio.flags |= ATA_LBA; 1596 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1597 wd->sc_wdc_bio.databuf = va; 1598 #ifndef WD_DUMP_NOT_TRUSTED 1599 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1600 case ATACMD_TRY_AGAIN: 1601 panic("wddump: try again"); 1602 break; 1603 case ATACMD_QUEUED: 1604 panic("wddump: polled command has been queued"); 1605 break; 1606 case ATACMD_COMPLETE: 1607 break; 1608 default: 1609 panic("wddump: unknown atacmd code %d", err); 1610 } 1611 switch(err = wd->sc_wdc_bio.error) { 1612 case TIMEOUT: 1613 printf("wddump: device timed out"); 1614 err = EIO; 1615 break; 1616 case ERR_DF: 1617 printf("wddump: drive fault"); 1618 err = EIO; 1619 break; 1620 case ERR_DMA: 1621 printf("wddump: DMA error"); 1622 err = EIO; 1623 break; 1624 case ERROR: 1625 printf("wddump: "); 1626 wdperror(wd); 1627 err = EIO; 1628 break; 1629 case NOERROR: 1630 err = 0; 1631 break; 1632 default: 1633 panic("wddump: unknown error type %d", err); 1634 } 1635 if (err != 0) { 1636 printf("\n"); 1637 return err; 1638 } 1639 #else /* WD_DUMP_NOT_TRUSTED */ 1640 /* Let's just talk about this first... */ 1641 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1642 unit, va, cylin, head, sector); 1643 delay(500 * 1000); /* half a second */ 1644 #endif 1645 1646 wddoingadump = 0; 1647 return 0; 1648 } 1649 1650 #ifdef HAS_BAD144_HANDLING 1651 /* 1652 * Internalize the bad sector table. 1653 */ 1654 void 1655 bad144intern(struct wd_softc *wd) 1656 { 1657 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1658 struct disklabel *lp = wd->sc_dk.dk_label; 1659 int i = 0; 1660 1661 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1662 1663 for (; i < NBT_BAD; i++) { 1664 if (bt->bt_bad[i].bt_cyl == 0xffff) 1665 break; 1666 wd->sc_badsect[i] = 1667 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1668 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1669 (bt->bt_bad[i].bt_trksec & 0xff); 1670 } 1671 for (; i < NBT_BAD+1; i++) 1672 wd->sc_badsect[i] = -1; 1673 } 1674 #endif 1675 1676 static void 1677 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1678 { 1679 prop_dictionary_t disk_info, odisk_info, geom; 1680 const char *cp; 1681 1682 disk_info = prop_dictionary_create(); 1683 1684 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1685 cp = "ST506"; 1686 else { 1687 /* XXX Should have a case for ATA here, too. */ 1688 cp = "ESDI"; 1689 } 1690 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1691 1692 geom = prop_dictionary_create(); 1693 1694 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1695 1696 prop_dictionary_set_uint32(geom, "sector-size", 1697 DEV_BSIZE /* XXX 512? */); 1698 1699 prop_dictionary_set_uint16(geom, "sectors-per-track", 1700 wd->sc_params.atap_sectors); 1701 1702 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1703 wd->sc_params.atap_heads); 1704 1705 if (wd->sc_flags & WDF_LBA) 1706 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1707 wd->sc_capacity / 1708 (wd->sc_params.atap_heads * 1709 wd->sc_params.atap_sectors)); 1710 else 1711 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1712 wd->sc_params.atap_cylinders); 1713 1714 prop_dictionary_set(disk_info, "geometry", geom); 1715 prop_object_release(geom); 1716 1717 prop_dictionary_set(device_properties(wd->sc_dev), 1718 "disk-info", disk_info); 1719 1720 /* 1721 * Don't release disk_info here; we keep a reference to it. 1722 * disk_detach() will release it when we go away. 1723 */ 1724 1725 odisk_info = wd->sc_dk.dk_info; 1726 wd->sc_dk.dk_info = disk_info; 1727 if (odisk_info) 1728 prop_object_release(odisk_info); 1729 } 1730 1731 int 1732 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1733 { 1734 1735 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1736 case CMD_AGAIN: 1737 return 1; 1738 case CMD_ERR: 1739 /* 1740 * We `know' there's a drive here; just assume it's old. 1741 * This geometry is only used to read the MBR and print a 1742 * (false) attach message. 1743 */ 1744 strncpy(params->atap_model, "ST506", 1745 sizeof params->atap_model); 1746 params->atap_config = ATA_CFG_FIXED; 1747 params->atap_cylinders = 1024; 1748 params->atap_heads = 8; 1749 params->atap_sectors = 17; 1750 params->atap_multi = 1; 1751 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1752 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1753 /* FALLTHROUGH */ 1754 case CMD_OK: 1755 wd_params_to_properties(wd, params); 1756 return 0; 1757 default: 1758 panic("wd_get_params: bad return code from ata_get_params"); 1759 /* NOTREACHED */ 1760 } 1761 } 1762 1763 int 1764 wd_getcache(struct wd_softc *wd, int *bitsp) 1765 { 1766 struct ataparams params; 1767 1768 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1769 return EIO; 1770 if (params.atap_cmd_set1 == 0x0000 || 1771 params.atap_cmd_set1 == 0xffff || 1772 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1773 *bitsp = 0; 1774 return 0; 1775 } 1776 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1777 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1778 *bitsp |= DKCACHE_WRITE; 1779 1780 return 0; 1781 } 1782 1783 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1784 1785 int 1786 wd_setcache(struct wd_softc *wd, int bits) 1787 { 1788 struct ataparams params; 1789 struct ata_command ata_c; 1790 1791 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1792 return EIO; 1793 1794 if (params.atap_cmd_set1 == 0x0000 || 1795 params.atap_cmd_set1 == 0xffff || 1796 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1797 return EOPNOTSUPP; 1798 1799 if ((bits & DKCACHE_READ) == 0 || 1800 (bits & DKCACHE_SAVE) != 0) 1801 return EOPNOTSUPP; 1802 1803 memset(&ata_c, 0, sizeof(struct ata_command)); 1804 ata_c.r_command = SET_FEATURES; 1805 ata_c.r_st_bmask = 0; 1806 ata_c.r_st_pmask = 0; 1807 ata_c.timeout = 30000; /* 30s timeout */ 1808 ata_c.flags = AT_WAIT; 1809 if (bits & DKCACHE_WRITE) 1810 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1811 else 1812 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1813 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1814 aprint_error_dev(wd->sc_dev, 1815 "wd_setcache command not complete\n"); 1816 return EIO; 1817 } 1818 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1819 char sbuf[sizeof(at_errbits) + 64]; 1820 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1821 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1822 return EIO; 1823 } 1824 return 0; 1825 } 1826 1827 static int 1828 wd_standby(struct wd_softc *wd, int flags) 1829 { 1830 struct ata_command ata_c; 1831 1832 memset(&ata_c, 0, sizeof(struct ata_command)); 1833 ata_c.r_command = WDCC_STANDBY_IMMED; 1834 ata_c.r_st_bmask = WDCS_DRDY; 1835 ata_c.r_st_pmask = WDCS_DRDY; 1836 ata_c.flags = flags; 1837 ata_c.timeout = 30000; /* 30s timeout */ 1838 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1839 aprint_error_dev(wd->sc_dev, 1840 "standby immediate command didn't complete\n"); 1841 return EIO; 1842 } 1843 if (ata_c.flags & AT_ERROR) { 1844 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1845 return ENODEV; 1846 } 1847 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1848 char sbuf[sizeof(at_errbits) + 64]; 1849 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1850 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1851 return EIO; 1852 } 1853 return 0; 1854 } 1855 1856 int 1857 wd_flushcache(struct wd_softc *wd, int flags) 1858 { 1859 struct ata_command ata_c; 1860 1861 /* 1862 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1863 * only ATA-2 and still support it. 1864 */ 1865 if (wd->drvp->ata_vers < 4 && 1866 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1867 wd->sc_params.atap_cmd_set2 == 0xffff)) 1868 return ENODEV; 1869 memset(&ata_c, 0, sizeof(struct ata_command)); 1870 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1871 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1872 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1873 else 1874 ata_c.r_command = WDCC_FLUSHCACHE; 1875 ata_c.r_st_bmask = WDCS_DRDY; 1876 ata_c.r_st_pmask = WDCS_DRDY; 1877 ata_c.flags = flags; 1878 ata_c.timeout = 30000; /* 30s timeout */ 1879 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1880 aprint_error_dev(wd->sc_dev, 1881 "flush cache command didn't complete\n"); 1882 return EIO; 1883 } 1884 if (ata_c.flags & AT_ERROR) { 1885 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1886 return ENODEV; 1887 } 1888 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1889 char sbuf[sizeof(at_errbits) + 64]; 1890 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1891 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1892 sbuf); 1893 return EIO; 1894 } 1895 return 0; 1896 } 1897 1898 bool 1899 wd_shutdown(device_t dev, int how) 1900 { 1901 struct wd_softc *wd = device_private(dev); 1902 1903 /* the adapter needs to be enabled */ 1904 if (wd->atabus->ata_addref(wd->drvp)) 1905 return true; /* no need to complain */ 1906 1907 wd_flushcache(wd, AT_POLL); 1908 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1909 wd_standby(wd, AT_POLL); 1910 return true; 1911 } 1912 1913 /* 1914 * Allocate space for a ioctl queue structure. Mostly taken from 1915 * scsipi_ioctl.c 1916 */ 1917 struct wd_ioctl * 1918 wi_get(void) 1919 { 1920 struct wd_ioctl *wi; 1921 int s; 1922 1923 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1924 buf_init(&wi->wi_bp); 1925 s = splbio(); 1926 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1927 splx(s); 1928 return (wi); 1929 } 1930 1931 /* 1932 * Free an ioctl structure and remove it from our list 1933 */ 1934 1935 void 1936 wi_free(struct wd_ioctl *wi) 1937 { 1938 int s; 1939 1940 s = splbio(); 1941 LIST_REMOVE(wi, wi_list); 1942 splx(s); 1943 buf_destroy(&wi->wi_bp); 1944 free(wi, M_TEMP); 1945 } 1946 1947 /* 1948 * Find a wd_ioctl structure based on the struct buf. 1949 */ 1950 1951 struct wd_ioctl * 1952 wi_find(struct buf *bp) 1953 { 1954 struct wd_ioctl *wi; 1955 int s; 1956 1957 s = splbio(); 1958 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1959 if (bp == &wi->wi_bp) 1960 break; 1961 splx(s); 1962 return (wi); 1963 } 1964 1965 /* 1966 * Ioctl pseudo strategy routine 1967 * 1968 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1969 * happens here is: 1970 * 1971 * - wdioctl() queues a wd_ioctl structure. 1972 * 1973 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1974 * user space I/O is required. If physio() is called, physio() eventually 1975 * calls wdioctlstrategy(). 1976 * 1977 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1978 * to perform the actual command 1979 * 1980 * The reason for the use of the pseudo strategy routine is because 1981 * when doing I/O to/from user space, physio _really_ wants to be in 1982 * the loop. We could put the entire buffer into the ioctl request 1983 * structure, but that won't scale if we want to do things like download 1984 * microcode. 1985 */ 1986 1987 void 1988 wdioctlstrategy(struct buf *bp) 1989 { 1990 struct wd_ioctl *wi; 1991 struct ata_command ata_c; 1992 int error = 0; 1993 1994 wi = wi_find(bp); 1995 if (wi == NULL) { 1996 printf("wdioctlstrategy: " 1997 "No matching ioctl request found in queue\n"); 1998 error = EINVAL; 1999 goto bad; 2000 } 2001 2002 memset(&ata_c, 0, sizeof(ata_c)); 2003 2004 /* 2005 * Abort if physio broke up the transfer 2006 */ 2007 2008 if (bp->b_bcount != wi->wi_atareq.datalen) { 2009 printf("physio split wd ioctl request... cannot proceed\n"); 2010 error = EIO; 2011 goto bad; 2012 } 2013 2014 /* 2015 * Abort if we didn't get a buffer size that was a multiple of 2016 * our sector size (or was larger than NBBY) 2017 */ 2018 2019 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2020 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2021 (1 << NBBY)) { 2022 error = EINVAL; 2023 goto bad; 2024 } 2025 2026 /* 2027 * Make sure a timeout was supplied in the ioctl request 2028 */ 2029 2030 if (wi->wi_atareq.timeout == 0) { 2031 error = EINVAL; 2032 goto bad; 2033 } 2034 2035 if (wi->wi_atareq.flags & ATACMD_READ) 2036 ata_c.flags |= AT_READ; 2037 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2038 ata_c.flags |= AT_WRITE; 2039 2040 if (wi->wi_atareq.flags & ATACMD_READREG) 2041 ata_c.flags |= AT_READREG; 2042 2043 ata_c.flags |= AT_WAIT; 2044 2045 ata_c.timeout = wi->wi_atareq.timeout; 2046 ata_c.r_command = wi->wi_atareq.command; 2047 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2048 ata_c.r_cyl = wi->wi_atareq.cylinder; 2049 ata_c.r_sector = wi->wi_atareq.sec_num; 2050 ata_c.r_count = wi->wi_atareq.sec_count; 2051 ata_c.r_features = wi->wi_atareq.features; 2052 ata_c.r_st_bmask = WDCS_DRDY; 2053 ata_c.r_st_pmask = WDCS_DRDY; 2054 ata_c.data = wi->wi_bp.b_data; 2055 ata_c.bcount = wi->wi_bp.b_bcount; 2056 2057 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2058 != ATACMD_COMPLETE) { 2059 wi->wi_atareq.retsts = ATACMD_ERROR; 2060 goto bad; 2061 } 2062 2063 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2064 if (ata_c.flags & AT_ERROR) { 2065 wi->wi_atareq.retsts = ATACMD_ERROR; 2066 wi->wi_atareq.error = ata_c.r_error; 2067 } else if (ata_c.flags & AT_DF) 2068 wi->wi_atareq.retsts = ATACMD_DF; 2069 else 2070 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2071 } else { 2072 wi->wi_atareq.retsts = ATACMD_OK; 2073 if (wi->wi_atareq.flags & ATACMD_READREG) { 2074 wi->wi_atareq.head = ata_c.r_head ; 2075 wi->wi_atareq.cylinder = ata_c.r_cyl; 2076 wi->wi_atareq.sec_num = ata_c.r_sector; 2077 wi->wi_atareq.sec_count = ata_c.r_count; 2078 wi->wi_atareq.features = ata_c.r_features; 2079 wi->wi_atareq.error = ata_c.r_error; 2080 } 2081 } 2082 2083 bp->b_error = 0; 2084 biodone(bp); 2085 return; 2086 bad: 2087 bp->b_error = error; 2088 biodone(bp); 2089 } 2090
Indexes created Sat Sep 27 14:09:57 GMT 2025