wd.c revision 1.388
1 /* $NetBSD: wd.c,v 1.388 2011/10/05 03:40:18 jakllsch 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 1.388 2011/10/05 03:40:18 jakllsch 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 void wdminphys(struct buf *); 129 130 static int wdlastclose(device_t); 131 static bool wd_suspend(device_t, const pmf_qual_t *); 132 static int wd_standby(struct wd_softc *, int); 133 134 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 135 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 136 137 extern struct cfdriver wd_cd; 138 139 dev_type_open(wdopen); 140 dev_type_close(wdclose); 141 dev_type_read(wdread); 142 dev_type_write(wdwrite); 143 dev_type_ioctl(wdioctl); 144 dev_type_strategy(wdstrategy); 145 dev_type_dump(wddump); 146 dev_type_size(wdsize); 147 148 const struct bdevsw wd_bdevsw = { 149 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 150 }; 151 152 const struct cdevsw wd_cdevsw = { 153 wdopen, wdclose, wdread, wdwrite, wdioctl, 154 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 155 }; 156 157 /* 158 * Glue necessary to hook WDCIOCCOMMAND into physio 159 */ 160 161 struct wd_ioctl { 162 LIST_ENTRY(wd_ioctl) wi_list; 163 struct buf wi_bp; 164 struct uio wi_uio; 165 struct iovec wi_iov; 166 atareq_t wi_atareq; 167 struct wd_softc *wi_softc; 168 }; 169 170 LIST_HEAD(, wd_ioctl) wi_head; 171 172 struct wd_ioctl *wi_find(struct buf *); 173 void wi_free(struct wd_ioctl *); 174 struct wd_ioctl *wi_get(void); 175 void wdioctlstrategy(struct buf *); 176 177 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 178 void wdgetdisklabel(struct wd_softc *); 179 void wdstart(void *); 180 void wdstart1(struct wd_softc*, struct buf *); 181 void wdrestart(void *); 182 void wddone(void *); 183 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 184 int wd_flushcache(struct wd_softc *, int); 185 bool wd_shutdown(device_t, int); 186 187 int wd_getcache(struct wd_softc *, int *); 188 int wd_setcache(struct wd_softc *, int); 189 190 struct dkdriver wddkdriver = { wdstrategy, wdminphys }; 191 192 #ifdef HAS_BAD144_HANDLING 193 static void bad144intern(struct wd_softc *); 194 #endif 195 196 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 197 198 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 199 200 /* 201 * Quirk table for IDE drives. Put more-specific matches first, since 202 * a simple globbing routine is used for matching. 203 */ 204 static const struct wd_quirk { 205 const char *wdq_match; /* inquiry pattern to match */ 206 int wdq_quirks; /* drive quirks */ 207 } wd_quirk_table[] = { 208 /* 209 * Some Seagate S-ATA drives have a PHY which can get confused 210 * with the way data is packetized by some S-ATA controllers. 211 * 212 * The work-around is to split in two any write transfer whose 213 * sector count % 15 == 1 (assuming 512 byte sectors). 214 * 215 * XXX This is an incomplete list. There are at least a couple 216 * XXX more model numbers. If you have trouble with such transfers 217 * XXX (8K is the most common) on Seagate S-ATA drives, please 218 * XXX notify thorpej (at) NetBSD.org. 219 */ 220 { "ST3120023AS", 221 WD_QUIRK_SPLIT_MOD15_WRITE }, 222 { "ST380023AS", 223 WD_QUIRK_SPLIT_MOD15_WRITE }, 224 { NULL, 225 0 } 226 }; 227 228 static const struct wd_quirk * 229 wd_lookup_quirks(const char *name) 230 { 231 const struct wd_quirk *wdq; 232 const char *estr; 233 234 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 235 /* 236 * We only want exact matches (which include matches 237 * against globbing characters). 238 */ 239 if (pmatch(name, wdq->wdq_match, &estr) == 2) 240 return (wdq); 241 } 242 return (NULL); 243 } 244 245 int 246 wdprobe(device_t parent, cfdata_t match, void *aux) 247 { 248 struct ata_device *adev = aux; 249 250 if (adev == NULL) 251 return 0; 252 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 253 return 0; 254 255 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 256 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 257 return 0; 258 return 1; 259 } 260 261 void 262 wdattach(device_t parent, device_t self, void *aux) 263 { 264 struct wd_softc *wd = device_private(self); 265 struct ata_device *adev= aux; 266 int i, blank; 267 char tbuf[41], pbuf[9], c, *p, *q; 268 const struct wd_quirk *wdq; 269 270 wd->sc_dev = self; 271 272 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 273 callout_init(&wd->sc_restart_ch, 0); 274 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 275 #ifdef WD_SOFTBADSECT 276 SLIST_INIT(&wd->sc_bslist); 277 #endif 278 wd->atabus = adev->adev_bustype; 279 wd->openings = adev->adev_openings; 280 wd->drvp = adev->adev_drv_data; 281 282 wd->drvp->drv_done = wddone; 283 wd->drvp->drv_softc = wd->sc_dev; 284 285 aprint_naive("\n"); 286 aprint_normal("\n"); 287 288 /* read our drive info */ 289 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 290 aprint_error_dev(self, "IDENTIFY failed\n"); 291 return; 292 } 293 294 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 295 i < sizeof(wd->sc_params.atap_model); i++) { 296 c = *p++; 297 if (c == '\0') 298 break; 299 if (c != ' ') { 300 if (blank) { 301 *q++ = ' '; 302 blank = 0; 303 } 304 *q++ = c; 305 } else 306 blank = 1; 307 } 308 *q++ = '\0'; 309 310 aprint_normal_dev(self, "<%s>\n", tbuf); 311 312 wdq = wd_lookup_quirks(tbuf); 313 if (wdq != NULL) 314 wd->sc_quirks = wdq->wdq_quirks; 315 316 if (wd->sc_quirks != 0) { 317 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 318 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 319 aprint_normal_dev(self, "quirks %s\n", sbuf); 320 } 321 322 if ((wd->sc_params.atap_multi & 0xff) > 1) { 323 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 324 } else { 325 wd->sc_multi = 1; 326 } 327 328 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 329 wd->sc_multi); 330 331 /* 48-bit LBA addressing */ 332 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 333 wd->sc_flags |= WDF_LBA48; 334 335 /* Prior to ATA-4, LBA was optional. */ 336 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 337 wd->sc_flags |= WDF_LBA; 338 #if 0 339 /* ATA-4 requires LBA. */ 340 if (wd->sc_params.atap_ataversion != 0xffff && 341 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 342 wd->sc_flags |= WDF_LBA; 343 #endif 344 345 if ((wd->sc_flags & WDF_LBA48) != 0) { 346 aprint_verbose(" LBA48 addressing\n"); 347 wd->sc_capacity = 348 ((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) | 349 ((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) | 350 ((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) | 351 ((u_int64_t) wd->sc_params.atap_max_lba[0] << 0); 352 wd->sc_capacity28 = 353 (wd->sc_params.atap_capacity[1] << 16) | 354 wd->sc_params.atap_capacity[0]; 355 } else if ((wd->sc_flags & WDF_LBA) != 0) { 356 aprint_verbose(" LBA addressing\n"); 357 wd->sc_capacity28 = wd->sc_capacity = 358 (wd->sc_params.atap_capacity[1] << 16) | 359 wd->sc_params.atap_capacity[0]; 360 } else { 361 aprint_verbose(" chs addressing\n"); 362 wd->sc_capacity28 = wd->sc_capacity = 363 wd->sc_params.atap_cylinders * 364 wd->sc_params.atap_heads * 365 wd->sc_params.atap_sectors; 366 } 367 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 368 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 369 "%d bytes/sect x %llu sectors\n", 370 pbuf, 371 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 372 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 373 wd->sc_params.atap_cylinders, 374 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 375 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 376 377 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 378 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 379 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 380 /* 381 * Initialize and attach the disk structure. 382 */ 383 /* we fill in dk_info later */ 384 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 385 disk_attach(&wd->sc_dk); 386 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 387 #if NRND > 0 388 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 389 RND_TYPE_DISK, 0); 390 #endif 391 392 /* Discover wedges on this disk. */ 393 dkwedge_discover(&wd->sc_dk); 394 395 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 396 aprint_error_dev(self, "couldn't establish power handler\n"); 397 } 398 399 static bool 400 wd_suspend(device_t dv, const pmf_qual_t *qual) 401 { 402 struct wd_softc *sc = device_private(dv); 403 404 wd_flushcache(sc, AT_WAIT); 405 wd_standby(sc, AT_WAIT); 406 return true; 407 } 408 409 int 410 wddetach(device_t self, int flags) 411 { 412 struct wd_softc *sc = device_private(self); 413 int bmaj, cmaj, i, mn, rc, s; 414 415 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 416 return rc; 417 418 /* locate the major number */ 419 bmaj = bdevsw_lookup_major(&wd_bdevsw); 420 cmaj = cdevsw_lookup_major(&wd_cdevsw); 421 422 /* Nuke the vnodes for any open instances. */ 423 for (i = 0; i < MAXPARTITIONS; i++) { 424 mn = WDMINOR(device_unit(self), i); 425 vdevgone(bmaj, mn, mn, VBLK); 426 vdevgone(cmaj, mn, mn, VCHR); 427 } 428 429 /* Delete all of our wedges. */ 430 dkwedge_delall(&sc->sc_dk); 431 432 s = splbio(); 433 434 /* Kill off any queued buffers. */ 435 bufq_drain(sc->sc_q); 436 437 bufq_free(sc->sc_q); 438 sc->atabus->ata_killpending(sc->drvp); 439 440 splx(s); 441 442 /* Detach disk. */ 443 disk_detach(&sc->sc_dk); 444 disk_destroy(&sc->sc_dk); 445 446 #ifdef WD_SOFTBADSECT 447 /* Clean out the bad sector list */ 448 while (!SLIST_EMPTY(&sc->sc_bslist)) { 449 void *head = SLIST_FIRST(&sc->sc_bslist); 450 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 451 free(head, M_TEMP); 452 } 453 sc->sc_bscount = 0; 454 #endif 455 456 pmf_device_deregister(self); 457 458 #if NRND > 0 459 /* Unhook the entropy source. */ 460 rnd_detach_source(&sc->rnd_source); 461 #endif 462 463 callout_destroy(&sc->sc_restart_ch); 464 465 sc->drvp->drive_flags = 0; /* no drive any more here */ 466 467 return (0); 468 } 469 470 /* 471 * Read/write routine for a buffer. Validates the arguments and schedules the 472 * transfer. Does not wait for the transfer to complete. 473 */ 474 void 475 wdstrategy(struct buf *bp) 476 { 477 struct wd_softc *wd = 478 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 479 struct disklabel *lp = wd->sc_dk.dk_label; 480 daddr_t blkno; 481 int s; 482 483 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 484 DEBUG_XFERS); 485 486 /* Valid request? */ 487 if (bp->b_blkno < 0 || 488 (bp->b_bcount % lp->d_secsize) != 0 || 489 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 490 bp->b_error = EINVAL; 491 goto done; 492 } 493 494 /* If device invalidated (e.g. media change, door open, 495 * device detachment), then error. 496 */ 497 if ((wd->sc_flags & WDF_LOADED) == 0 || 498 !device_is_enabled(wd->sc_dev)) { 499 bp->b_error = EIO; 500 goto done; 501 } 502 503 /* If it's a null transfer, return immediately. */ 504 if (bp->b_bcount == 0) 505 goto done; 506 507 /* 508 * Do bounds checking, adjust transfer. if error, process. 509 * If end of partition, just return. 510 */ 511 if (WDPART(bp->b_dev) == RAW_PART) { 512 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 513 wd->sc_capacity) <= 0) 514 goto done; 515 } else { 516 if (bounds_check_with_label(&wd->sc_dk, bp, 517 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 518 goto done; 519 } 520 521 /* 522 * Now convert the block number to absolute and put it in 523 * terms of the device's logical block size. 524 */ 525 if (lp->d_secsize >= DEV_BSIZE) 526 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 527 else 528 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 529 530 if (WDPART(bp->b_dev) != RAW_PART) 531 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 532 533 bp->b_rawblkno = blkno; 534 535 #ifdef WD_SOFTBADSECT 536 /* 537 * If the transfer about to be attempted contains only a block that 538 * is known to be bad then return an error for the transfer without 539 * even attempting to start a transfer up under the premis that we 540 * will just end up doing more retries for a transfer that will end 541 * up failing again. 542 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 543 */ 544 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 545 struct disk_badsectors *dbs; 546 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 547 548 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 549 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 550 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 551 bp->b_error = EIO; 552 goto done; 553 } 554 } 555 #endif 556 557 /* Queue transfer on drive, activate drive and controller if idle. */ 558 s = splbio(); 559 bufq_put(wd->sc_q, bp); 560 wdstart(wd); 561 splx(s); 562 return; 563 done: 564 /* Toss transfer; we're done early. */ 565 bp->b_resid = bp->b_bcount; 566 biodone(bp); 567 } 568 569 /* 570 * Queue a drive for I/O. 571 */ 572 void 573 wdstart(void *arg) 574 { 575 struct wd_softc *wd = arg; 576 struct buf *bp = NULL; 577 578 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 579 DEBUG_XFERS); 580 581 if (!device_is_active(wd->sc_dev)) 582 return; 583 584 while (wd->openings > 0) { 585 586 /* Is there a buf for us ? */ 587 if ((bp = bufq_get(wd->sc_q)) == NULL) 588 return; 589 590 /* 591 * Make the command. First lock the device 592 */ 593 wd->openings--; 594 595 wd->retries = 0; 596 wdstart1(wd, bp); 597 } 598 } 599 600 static void 601 wd_split_mod15_write(struct buf *bp) 602 { 603 struct buf *obp = bp->b_private; 604 struct wd_softc *sc = 605 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 606 int s; 607 608 if (__predict_false(bp->b_error != 0)) { 609 /* 610 * Propagate the error. If this was the first half of 611 * the original transfer, make sure to account for that 612 * in the residual. 613 */ 614 if (bp->b_data == obp->b_data) 615 bp->b_resid += bp->b_bcount; 616 goto done; 617 } 618 619 /* 620 * If this was the second half of the transfer, we're all done! 621 */ 622 if (bp->b_data != obp->b_data) 623 goto done; 624 625 /* 626 * Advance the pointer to the second half and issue that command 627 * using the same opening. 628 */ 629 bp->b_flags = obp->b_flags; 630 bp->b_oflags = obp->b_oflags; 631 bp->b_cflags = obp->b_cflags; 632 bp->b_data = (char *)bp->b_data + bp->b_bcount; 633 bp->b_blkno += (bp->b_bcount / 512); 634 bp->b_rawblkno += (bp->b_bcount / 512); 635 s = splbio(); 636 wdstart1(sc, bp); 637 splx(s); 638 return; 639 640 done: 641 obp->b_error = bp->b_error; 642 obp->b_resid = bp->b_resid; 643 s = splbio(); 644 putiobuf(bp); 645 biodone(obp); 646 sc->openings++; 647 splx(s); 648 /* wddone() will call wdstart() */ 649 } 650 651 void 652 wdstart1(struct wd_softc *wd, struct buf *bp) 653 { 654 655 /* 656 * Deal with the "split mod15 write" quirk. We just divide the 657 * transfer in two, doing the first half and then then second half 658 * with the same command opening. 659 * 660 * Note we MUST do this here, because we can't let insertion 661 * into the bufq cause the transfers to be re-merged. 662 */ 663 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 664 (bp->b_flags & B_READ) == 0 && 665 bp->b_bcount > 512 && 666 ((bp->b_bcount / 512) % 15) == 1)) { 667 struct buf *nbp; 668 669 /* already at splbio */ 670 nbp = getiobuf(NULL, false); 671 if (__predict_false(nbp == NULL)) { 672 /* No memory -- fail the iop. */ 673 bp->b_error = ENOMEM; 674 bp->b_resid = bp->b_bcount; 675 biodone(bp); 676 wd->openings++; 677 return; 678 } 679 680 nbp->b_error = 0; 681 nbp->b_proc = bp->b_proc; 682 nbp->b_dev = bp->b_dev; 683 684 nbp->b_bcount = bp->b_bcount / 2; 685 nbp->b_bufsize = bp->b_bcount / 2; 686 nbp->b_data = bp->b_data; 687 688 nbp->b_blkno = bp->b_blkno; 689 nbp->b_rawblkno = bp->b_rawblkno; 690 691 nbp->b_flags = bp->b_flags; 692 nbp->b_oflags = bp->b_oflags; 693 nbp->b_cflags = bp->b_cflags; 694 nbp->b_iodone = wd_split_mod15_write; 695 696 /* Put ptr to orig buf in b_private and use new buf */ 697 nbp->b_private = bp; 698 699 BIO_COPYPRIO(nbp, bp); 700 701 bp = nbp; 702 } 703 704 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 705 wd->sc_wdc_bio.bcount = bp->b_bcount; 706 wd->sc_wdc_bio.databuf = bp->b_data; 707 wd->sc_wdc_bio.blkdone =0; 708 KASSERT(bp == wd->sc_bp || wd->sc_bp == NULL); 709 wd->sc_bp = bp; 710 /* 711 * If we're retrying, retry in single-sector mode. This will give us 712 * the sector number of the problem, and will eventually allow the 713 * transfer to succeed. 714 */ 715 if (wd->retries >= WDIORETRIES_SINGLE) 716 wd->sc_wdc_bio.flags = ATA_SINGLE; 717 else 718 wd->sc_wdc_bio.flags = 0; 719 if (wd->sc_flags & WDF_LBA48 && 720 (wd->sc_wdc_bio.blkno + 721 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 722 wd->sc_capacity28) 723 wd->sc_wdc_bio.flags |= ATA_LBA48; 724 if (wd->sc_flags & WDF_LBA) 725 wd->sc_wdc_bio.flags |= ATA_LBA; 726 if (bp->b_flags & B_READ) 727 wd->sc_wdc_bio.flags |= ATA_READ; 728 /* Instrumentation. */ 729 disk_busy(&wd->sc_dk); 730 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 731 case ATACMD_TRY_AGAIN: 732 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 733 break; 734 case ATACMD_QUEUED: 735 case ATACMD_COMPLETE: 736 break; 737 default: 738 panic("wdstart1: bad return code from ata_bio()"); 739 } 740 } 741 742 void 743 wddone(void *v) 744 { 745 struct wd_softc *wd = device_private(v); 746 struct buf *bp = wd->sc_bp; 747 const char *errmsg; 748 int do_perror = 0; 749 750 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 751 DEBUG_XFERS); 752 if (bp == NULL) 753 return; 754 bp->b_resid = wd->sc_wdc_bio.bcount; 755 switch (wd->sc_wdc_bio.error) { 756 case ERR_DMA: 757 errmsg = "DMA error"; 758 goto retry; 759 case ERR_DF: 760 errmsg = "device fault"; 761 goto retry; 762 case TIMEOUT: 763 errmsg = "device timeout"; 764 goto retry; 765 case ERR_RESET: 766 errmsg = "channel reset"; 767 goto retry2; 768 case ERROR: 769 /* Don't care about media change bits */ 770 if (wd->sc_wdc_bio.r_error != 0 && 771 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 772 goto noerror; 773 errmsg = "error"; 774 do_perror = 1; 775 retry: /* Just reset and retry. Can we do more ? */ 776 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 777 retry2: 778 diskerr(bp, "wd", errmsg, LOG_PRINTF, 779 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 780 if (wd->retries < WDIORETRIES) 781 printf(", retrying"); 782 printf("\n"); 783 if (do_perror) 784 wdperror(wd); 785 if (wd->retries < WDIORETRIES) { 786 wd->retries++; 787 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 788 wdrestart, wd); 789 return; 790 } 791 792 #ifdef WD_SOFTBADSECT 793 /* 794 * Not all errors indicate a failed block but those that do, 795 * put the block on the bad-block list for the device. Only 796 * do this for reads because the drive should do it for writes, 797 * itself, according to Manuel. 798 */ 799 if ((bp->b_flags & B_READ) && 800 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 801 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 802 struct disk_badsectors *dbs; 803 804 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 805 dbs->dbs_min = bp->b_rawblkno; 806 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 807 microtime(&dbs->dbs_failedat); 808 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 809 wd->sc_bscount++; 810 } 811 #endif 812 bp->b_error = EIO; 813 break; 814 case NOERROR: 815 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 816 aprint_error_dev(wd->sc_dev, 817 "soft error (corrected)\n"); 818 break; 819 case ERR_NODEV: 820 bp->b_error = EIO; 821 break; 822 } 823 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 824 (bp->b_flags & B_READ)); 825 #if NRND > 0 826 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 827 #endif 828 /* XXX Yuck, but we don't want to increment openings in this case */ 829 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 830 biodone(bp); 831 else { 832 biodone(bp); 833 wd->openings++; 834 } 835 KASSERT(wd->sc_bp != NULL); 836 wd->sc_bp = NULL; 837 wdstart(wd); 838 } 839 840 void 841 wdrestart(void *v) 842 { 843 struct wd_softc *wd = v; 844 struct buf *bp = wd->sc_bp; 845 int s; 846 847 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 848 DEBUG_XFERS); 849 s = splbio(); 850 wdstart1(v, bp); 851 splx(s); 852 } 853 854 static void 855 wdminphys(struct buf *bp) 856 { 857 858 if (bp->b_bcount > (512 * 128)) { 859 bp->b_bcount = (512 * 128); 860 } 861 minphys(bp); 862 } 863 864 int 865 wdread(dev_t dev, struct uio *uio, int flags) 866 { 867 868 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 869 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 870 } 871 872 int 873 wdwrite(dev_t dev, struct uio *uio, int flags) 874 { 875 876 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 877 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 878 } 879 880 int 881 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 882 { 883 struct wd_softc *wd; 884 int part, error; 885 886 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 887 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 888 if (wd == NULL) 889 return (ENXIO); 890 891 if (! device_is_active(wd->sc_dev)) 892 return (ENODEV); 893 894 part = WDPART(dev); 895 896 mutex_enter(&wd->sc_dk.dk_openlock); 897 898 /* 899 * If there are wedges, and this is not RAW_PART, then we 900 * need to fail. 901 */ 902 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 903 error = EBUSY; 904 goto bad1; 905 } 906 907 /* 908 * If this is the first open of this device, add a reference 909 * to the adapter. 910 */ 911 if (wd->sc_dk.dk_openmask == 0 && 912 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 913 goto bad1; 914 915 if (wd->sc_dk.dk_openmask != 0) { 916 /* 917 * If any partition is open, but the disk has been invalidated, 918 * disallow further opens. 919 */ 920 if ((wd->sc_flags & WDF_LOADED) == 0) { 921 error = EIO; 922 goto bad2; 923 } 924 } else { 925 if ((wd->sc_flags & WDF_LOADED) == 0) { 926 wd->sc_flags |= WDF_LOADED; 927 928 /* Load the physical device parameters. */ 929 wd_get_params(wd, AT_WAIT, &wd->sc_params); 930 931 /* Load the partition info if not already loaded. */ 932 wdgetdisklabel(wd); 933 } 934 } 935 936 /* Check that the partition exists. */ 937 if (part != RAW_PART && 938 (part >= wd->sc_dk.dk_label->d_npartitions || 939 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 940 error = ENXIO; 941 goto bad2; 942 } 943 944 /* Insure only one open at a time. */ 945 switch (fmt) { 946 case S_IFCHR: 947 wd->sc_dk.dk_copenmask |= (1 << part); 948 break; 949 case S_IFBLK: 950 wd->sc_dk.dk_bopenmask |= (1 << part); 951 break; 952 } 953 wd->sc_dk.dk_openmask = 954 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 955 956 mutex_exit(&wd->sc_dk.dk_openlock); 957 return 0; 958 959 bad2: 960 if (wd->sc_dk.dk_openmask == 0) 961 wd->atabus->ata_delref(wd->drvp); 962 bad1: 963 mutex_exit(&wd->sc_dk.dk_openlock); 964 return error; 965 } 966 967 /* 968 * Caller must hold wd->sc_dk.dk_openlock. 969 */ 970 static int 971 wdlastclose(device_t self) 972 { 973 struct wd_softc *wd = device_private(self); 974 975 wd_flushcache(wd, AT_WAIT); 976 977 if (! (wd->sc_flags & WDF_KLABEL)) 978 wd->sc_flags &= ~WDF_LOADED; 979 980 wd->atabus->ata_delref(wd->drvp); 981 982 return 0; 983 } 984 985 int 986 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 987 { 988 struct wd_softc *wd = 989 device_lookup_private(&wd_cd, WDUNIT(dev)); 990 int part = WDPART(dev); 991 992 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 993 994 mutex_enter(&wd->sc_dk.dk_openlock); 995 996 switch (fmt) { 997 case S_IFCHR: 998 wd->sc_dk.dk_copenmask &= ~(1 << part); 999 break; 1000 case S_IFBLK: 1001 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1002 break; 1003 } 1004 wd->sc_dk.dk_openmask = 1005 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1006 1007 if (wd->sc_dk.dk_openmask == 0) 1008 wdlastclose(wd->sc_dev); 1009 1010 mutex_exit(&wd->sc_dk.dk_openlock); 1011 return 0; 1012 } 1013 1014 void 1015 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1016 { 1017 1018 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1019 memset(lp, 0, sizeof(struct disklabel)); 1020 1021 lp->d_secsize = DEV_BSIZE; 1022 lp->d_ntracks = wd->sc_params.atap_heads; 1023 lp->d_nsectors = wd->sc_params.atap_sectors; 1024 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1025 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1026 wd->sc_params.atap_cylinders; 1027 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1028 1029 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1030 lp->d_type = DTYPE_ST506; 1031 else 1032 lp->d_type = DTYPE_ESDI; 1033 1034 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1035 strncpy(lp->d_packname, "fictitious", 16); 1036 if (wd->sc_capacity > UINT32_MAX) 1037 lp->d_secperunit = UINT32_MAX; 1038 else 1039 lp->d_secperunit = wd->sc_capacity; 1040 lp->d_rpm = 3600; 1041 lp->d_interleave = 1; 1042 lp->d_flags = 0; 1043 1044 lp->d_partitions[RAW_PART].p_offset = 0; 1045 lp->d_partitions[RAW_PART].p_size = 1046 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1047 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1048 lp->d_npartitions = RAW_PART + 1; 1049 1050 lp->d_magic = DISKMAGIC; 1051 lp->d_magic2 = DISKMAGIC; 1052 lp->d_checksum = dkcksum(lp); 1053 } 1054 1055 /* 1056 * Fabricate a default disk label, and try to read the correct one. 1057 */ 1058 void 1059 wdgetdisklabel(struct wd_softc *wd) 1060 { 1061 struct disklabel *lp = wd->sc_dk.dk_label; 1062 const char *errstring; 1063 int s; 1064 1065 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1066 1067 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1068 1069 wdgetdefaultlabel(wd, lp); 1070 1071 wd->sc_badsect[0] = -1; 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, 1080 wd->sc_dk.dk_cpulabel); 1081 if (errstring) { 1082 /* 1083 * This probably happened because the drive's default 1084 * geometry doesn't match the DOS geometry. We 1085 * assume the DOS geometry is now in the label and try 1086 * again. XXX This is a kluge. 1087 */ 1088 if (wd->drvp->state > RESET) { 1089 s = splbio(); 1090 wd->drvp->drive_flags |= DRIVE_RESET; 1091 splx(s); 1092 } 1093 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1094 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1095 } 1096 if (errstring) { 1097 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1098 return; 1099 } 1100 1101 if (wd->drvp->state > RESET) { 1102 s = splbio(); 1103 wd->drvp->drive_flags |= DRIVE_RESET; 1104 splx(s); 1105 } 1106 #ifdef HAS_BAD144_HANDLING 1107 if ((lp->d_flags & D_BADSECT) != 0) 1108 bad144intern(wd); 1109 #endif 1110 } 1111 1112 void 1113 wdperror(const struct wd_softc *wd) 1114 { 1115 static const char *const errstr0_3[] = {"address mark not found", 1116 "track 0 not found", "aborted command", "media change requested", 1117 "id not found", "media changed", "uncorrectable data error", 1118 "bad block detected"}; 1119 static const char *const errstr4_5[] = { 1120 "obsolete (address mark not found)", 1121 "no media/write protected", "aborted command", 1122 "media change requested", "id not found", "media changed", 1123 "uncorrectable data error", "interface CRC error"}; 1124 const char *const *errstr; 1125 int i; 1126 const char *sep = ""; 1127 1128 const char *devname = device_xname(wd->sc_dev); 1129 struct ata_drive_datas *drvp = wd->drvp; 1130 int errno = wd->sc_wdc_bio.r_error; 1131 1132 if (drvp->ata_vers >= 4) 1133 errstr = errstr4_5; 1134 else 1135 errstr = errstr0_3; 1136 1137 printf("%s: (", devname); 1138 1139 if (errno == 0) 1140 printf("error not notified"); 1141 1142 for (i = 0; i < 8; i++) { 1143 if (errno & (1 << i)) { 1144 printf("%s%s", sep, errstr[i]); 1145 sep = ", "; 1146 } 1147 } 1148 printf(")\n"); 1149 } 1150 1151 int 1152 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1153 { 1154 struct wd_softc *wd = 1155 device_lookup_private(&wd_cd, WDUNIT(dev)); 1156 int error = 0, s; 1157 #ifdef __HAVE_OLD_DISKLABEL 1158 struct disklabel *newlabel = NULL; 1159 #endif 1160 1161 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1162 1163 if ((wd->sc_flags & WDF_LOADED) == 0) 1164 return EIO; 1165 1166 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1167 if (error != EPASSTHROUGH) 1168 return (error); 1169 1170 switch (xfer) { 1171 #ifdef HAS_BAD144_HANDLING 1172 case DIOCSBAD: 1173 if ((flag & FWRITE) == 0) 1174 return EBADF; 1175 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1176 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1177 bad144intern(wd); 1178 return 0; 1179 #endif 1180 #ifdef WD_SOFTBADSECT 1181 case DIOCBSLIST : 1182 { 1183 u_int32_t count, missing, skip; 1184 struct disk_badsecinfo dbsi; 1185 struct disk_badsectors *dbs; 1186 size_t available; 1187 uint8_t *laddr; 1188 1189 dbsi = *(struct disk_badsecinfo *)addr; 1190 missing = wd->sc_bscount; 1191 count = 0; 1192 available = dbsi.dbsi_bufsize; 1193 skip = dbsi.dbsi_skip; 1194 laddr = (uint8_t *)dbsi.dbsi_buffer; 1195 1196 /* 1197 * We start this loop with the expectation that all of the 1198 * entries will be missed and decrement this counter each 1199 * time we either skip over one (already copied out) or 1200 * we actually copy it back to user space. The structs 1201 * holding the bad sector information are copied directly 1202 * back to user space whilst the summary is returned via 1203 * the struct passed in via the ioctl. 1204 */ 1205 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1206 if (skip > 0) { 1207 missing--; 1208 skip--; 1209 continue; 1210 } 1211 if (available < sizeof(*dbs)) 1212 break; 1213 available -= sizeof(*dbs); 1214 copyout(dbs, laddr, sizeof(*dbs)); 1215 laddr += sizeof(*dbs); 1216 missing--; 1217 count++; 1218 } 1219 dbsi.dbsi_left = missing; 1220 dbsi.dbsi_copied = count; 1221 *(struct disk_badsecinfo *)addr = dbsi; 1222 return 0; 1223 } 1224 1225 case DIOCBSFLUSH : 1226 /* Clean out the bad sector list */ 1227 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1228 void *head = SLIST_FIRST(&wd->sc_bslist); 1229 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1230 free(head, M_TEMP); 1231 } 1232 wd->sc_bscount = 0; 1233 return 0; 1234 #endif 1235 case DIOCGDINFO: 1236 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1237 return 0; 1238 #ifdef __HAVE_OLD_DISKLABEL 1239 case ODIOCGDINFO: 1240 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1241 if (newlabel == NULL) 1242 return EIO; 1243 *newlabel = *(wd->sc_dk.dk_label); 1244 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1245 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1246 else 1247 error = ENOTTY; 1248 free(newlabel, M_TEMP); 1249 return error; 1250 #endif 1251 1252 case DIOCGPART: 1253 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1254 ((struct partinfo *)addr)->part = 1255 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1256 return 0; 1257 1258 case DIOCWDINFO: 1259 case DIOCSDINFO: 1260 #ifdef __HAVE_OLD_DISKLABEL 1261 case ODIOCWDINFO: 1262 case ODIOCSDINFO: 1263 #endif 1264 { 1265 struct disklabel *lp; 1266 1267 if ((flag & FWRITE) == 0) 1268 return EBADF; 1269 1270 #ifdef __HAVE_OLD_DISKLABEL 1271 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1272 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1273 if (newlabel == NULL) 1274 return EIO; 1275 memset(newlabel, 0, sizeof newlabel); 1276 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1277 lp = newlabel; 1278 } else 1279 #endif 1280 lp = (struct disklabel *)addr; 1281 1282 mutex_enter(&wd->sc_dk.dk_openlock); 1283 wd->sc_flags |= WDF_LABELLING; 1284 1285 error = setdisklabel(wd->sc_dk.dk_label, 1286 lp, /*wd->sc_dk.dk_openmask : */0, 1287 wd->sc_dk.dk_cpulabel); 1288 if (error == 0) { 1289 if (wd->drvp->state > RESET) { 1290 s = splbio(); 1291 wd->drvp->drive_flags |= DRIVE_RESET; 1292 splx(s); 1293 } 1294 if (xfer == DIOCWDINFO 1295 #ifdef __HAVE_OLD_DISKLABEL 1296 || xfer == ODIOCWDINFO 1297 #endif 1298 ) 1299 error = writedisklabel(WDLABELDEV(dev), 1300 wdstrategy, wd->sc_dk.dk_label, 1301 wd->sc_dk.dk_cpulabel); 1302 } 1303 1304 wd->sc_flags &= ~WDF_LABELLING; 1305 mutex_exit(&wd->sc_dk.dk_openlock); 1306 #ifdef __HAVE_OLD_DISKLABEL 1307 if (newlabel != NULL) 1308 free(newlabel, M_TEMP); 1309 #endif 1310 return error; 1311 } 1312 1313 case DIOCKLABEL: 1314 if (*(int *)addr) 1315 wd->sc_flags |= WDF_KLABEL; 1316 else 1317 wd->sc_flags &= ~WDF_KLABEL; 1318 return 0; 1319 1320 case DIOCWLABEL: 1321 if ((flag & FWRITE) == 0) 1322 return EBADF; 1323 if (*(int *)addr) 1324 wd->sc_flags |= WDF_WLABEL; 1325 else 1326 wd->sc_flags &= ~WDF_WLABEL; 1327 return 0; 1328 1329 case DIOCGDEFLABEL: 1330 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1331 return 0; 1332 #ifdef __HAVE_OLD_DISKLABEL 1333 case ODIOCGDEFLABEL: 1334 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1335 if (newlabel == NULL) 1336 return EIO; 1337 wdgetdefaultlabel(wd, newlabel); 1338 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1339 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1340 else 1341 error = ENOTTY; 1342 free(newlabel, M_TEMP); 1343 return error; 1344 #endif 1345 1346 #ifdef notyet 1347 case DIOCWFORMAT: 1348 if ((flag & FWRITE) == 0) 1349 return EBADF; 1350 { 1351 register struct format_op *fop; 1352 struct iovec aiov; 1353 struct uio auio; 1354 1355 fop = (struct format_op *)addr; 1356 aiov.iov_base = fop->df_buf; 1357 aiov.iov_len = fop->df_count; 1358 auio.uio_iov = &aiov; 1359 auio.uio_iovcnt = 1; 1360 auio.uio_resid = fop->df_count; 1361 auio.uio_offset = 1362 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1363 auio.uio_vmspace = l->l_proc->p_vmspace; 1364 error = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1365 &auio); 1366 fop->df_count -= auio.uio_resid; 1367 fop->df_reg[0] = wdc->sc_status; 1368 fop->df_reg[1] = wdc->sc_error; 1369 return error; 1370 } 1371 #endif 1372 case DIOCGCACHE: 1373 return wd_getcache(wd, (int *)addr); 1374 1375 case DIOCSCACHE: 1376 return wd_setcache(wd, *(int *)addr); 1377 1378 case DIOCCACHESYNC: 1379 return wd_flushcache(wd, AT_WAIT); 1380 1381 case ATAIOCCOMMAND: 1382 /* 1383 * Make sure this command is (relatively) safe first 1384 */ 1385 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1386 (flag & FWRITE) == 0) 1387 return (EBADF); 1388 { 1389 struct wd_ioctl *wi; 1390 atareq_t *atareq = (atareq_t *) addr; 1391 int error1; 1392 1393 wi = wi_get(); 1394 wi->wi_softc = wd; 1395 wi->wi_atareq = *atareq; 1396 1397 if (atareq->datalen && atareq->flags & 1398 (ATACMD_READ | ATACMD_WRITE)) { 1399 void *tbuf; 1400 if (atareq->datalen < DEV_BSIZE 1401 && atareq->command == WDCC_IDENTIFY) { 1402 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1403 wi->wi_iov.iov_base = tbuf; 1404 wi->wi_iov.iov_len = DEV_BSIZE; 1405 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1406 } else { 1407 tbuf = NULL; 1408 wi->wi_iov.iov_base = atareq->databuf; 1409 wi->wi_iov.iov_len = atareq->datalen; 1410 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1411 } 1412 wi->wi_uio.uio_iov = &wi->wi_iov; 1413 wi->wi_uio.uio_iovcnt = 1; 1414 wi->wi_uio.uio_resid = atareq->datalen; 1415 wi->wi_uio.uio_offset = 0; 1416 wi->wi_uio.uio_rw = 1417 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1418 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1419 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1420 wdminphys, &wi->wi_uio); 1421 if (tbuf != NULL && error1 == 0) { 1422 error1 = copyout(tbuf, atareq->databuf, 1423 atareq->datalen); 1424 free(tbuf, M_TEMP); 1425 } 1426 } else { 1427 /* No need to call physio if we don't have any 1428 user data */ 1429 wi->wi_bp.b_flags = 0; 1430 wi->wi_bp.b_data = 0; 1431 wi->wi_bp.b_bcount = 0; 1432 wi->wi_bp.b_dev = 0; 1433 wi->wi_bp.b_proc = l->l_proc; 1434 wdioctlstrategy(&wi->wi_bp); 1435 error1 = wi->wi_bp.b_error; 1436 } 1437 *atareq = wi->wi_atareq; 1438 wi_free(wi); 1439 return(error1); 1440 } 1441 1442 case DIOCAWEDGE: 1443 { 1444 struct dkwedge_info *dkw = (void *) addr; 1445 1446 if ((flag & FWRITE) == 0) 1447 return (EBADF); 1448 1449 /* If the ioctl happens here, the parent is us. */ 1450 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1451 return (dkwedge_add(dkw)); 1452 } 1453 1454 case DIOCDWEDGE: 1455 { 1456 struct dkwedge_info *dkw = (void *) addr; 1457 1458 if ((flag & FWRITE) == 0) 1459 return (EBADF); 1460 1461 /* If the ioctl happens here, the parent is us. */ 1462 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1463 return (dkwedge_del(dkw)); 1464 } 1465 1466 case DIOCLWEDGES: 1467 { 1468 struct dkwedge_list *dkwl = (void *) addr; 1469 1470 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1471 } 1472 1473 case DIOCGSTRATEGY: 1474 { 1475 struct disk_strategy *dks = (void *)addr; 1476 1477 s = splbio(); 1478 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1479 sizeof(dks->dks_name)); 1480 splx(s); 1481 dks->dks_paramlen = 0; 1482 1483 return 0; 1484 } 1485 1486 case DIOCSSTRATEGY: 1487 { 1488 struct disk_strategy *dks = (void *)addr; 1489 struct bufq_state *new; 1490 struct bufq_state *old; 1491 1492 if ((flag & FWRITE) == 0) { 1493 return EBADF; 1494 } 1495 if (dks->dks_param != NULL) { 1496 return EINVAL; 1497 } 1498 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1499 error = bufq_alloc(&new, dks->dks_name, 1500 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1501 if (error) { 1502 return error; 1503 } 1504 s = splbio(); 1505 old = wd->sc_q; 1506 bufq_move(new, old); 1507 wd->sc_q = new; 1508 splx(s); 1509 bufq_free(old); 1510 1511 return 0; 1512 } 1513 1514 default: 1515 return ENOTTY; 1516 } 1517 1518 #ifdef DIAGNOSTIC 1519 panic("wdioctl: impossible"); 1520 #endif 1521 } 1522 1523 #ifdef B_FORMAT 1524 int 1525 wdformat(struct buf *bp) 1526 { 1527 1528 bp->b_flags |= B_FORMAT; 1529 return wdstrategy(bp); 1530 } 1531 #endif 1532 1533 int 1534 wdsize(dev_t dev) 1535 { 1536 struct wd_softc *wd; 1537 int part, omask; 1538 int size; 1539 1540 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1541 1542 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1543 if (wd == NULL) 1544 return (-1); 1545 1546 part = WDPART(dev); 1547 omask = wd->sc_dk.dk_openmask & (1 << part); 1548 1549 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1550 return (-1); 1551 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1552 size = -1; 1553 else 1554 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1555 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1556 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1557 return (-1); 1558 return (size); 1559 } 1560 1561 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1562 static int wddoingadump = 0; 1563 static int wddumprecalibrated = 0; 1564 1565 /* 1566 * Dump core after a system crash. 1567 */ 1568 int 1569 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1570 { 1571 struct wd_softc *wd; /* disk unit to do the I/O */ 1572 struct disklabel *lp; /* disk's disklabel */ 1573 int part, err; 1574 int nblks; /* total number of sectors left to write */ 1575 1576 /* Check if recursive dump; if so, punt. */ 1577 if (wddoingadump) 1578 return EFAULT; 1579 wddoingadump = 1; 1580 1581 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1582 if (wd == NULL) 1583 return (ENXIO); 1584 1585 part = WDPART(dev); 1586 1587 /* Convert to disk sectors. Request must be a multiple of size. */ 1588 lp = wd->sc_dk.dk_label; 1589 if ((size % lp->d_secsize) != 0) 1590 return EFAULT; 1591 nblks = size / lp->d_secsize; 1592 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1593 1594 /* Check transfer bounds against partition size. */ 1595 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1596 return EINVAL; 1597 1598 /* Offset block number to start of partition. */ 1599 blkno += lp->d_partitions[part].p_offset; 1600 1601 /* Recalibrate, if first dump transfer. */ 1602 if (wddumprecalibrated == 0) { 1603 wddumprecalibrated = 1; 1604 (*wd->atabus->ata_reset_drive)(wd->drvp, 1605 AT_POLL | AT_RST_EMERG); 1606 wd->drvp->state = RESET; 1607 } 1608 1609 wd->sc_bp = NULL; 1610 wd->sc_wdc_bio.blkno = blkno; 1611 wd->sc_wdc_bio.flags = ATA_POLL; 1612 if (wd->sc_flags & WDF_LBA48 && 1613 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1614 wd->sc_wdc_bio.flags |= ATA_LBA48; 1615 if (wd->sc_flags & WDF_LBA) 1616 wd->sc_wdc_bio.flags |= ATA_LBA; 1617 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1618 wd->sc_wdc_bio.databuf = va; 1619 #ifndef WD_DUMP_NOT_TRUSTED 1620 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1621 case ATACMD_TRY_AGAIN: 1622 panic("wddump: try again"); 1623 break; 1624 case ATACMD_QUEUED: 1625 panic("wddump: polled command has been queued"); 1626 break; 1627 case ATACMD_COMPLETE: 1628 break; 1629 default: 1630 panic("wddump: unknown atacmd code %d", err); 1631 } 1632 switch(err = wd->sc_wdc_bio.error) { 1633 case TIMEOUT: 1634 printf("wddump: device timed out"); 1635 err = EIO; 1636 break; 1637 case ERR_DF: 1638 printf("wddump: drive fault"); 1639 err = EIO; 1640 break; 1641 case ERR_DMA: 1642 printf("wddump: DMA error"); 1643 err = EIO; 1644 break; 1645 case ERROR: 1646 printf("wddump: "); 1647 wdperror(wd); 1648 err = EIO; 1649 break; 1650 case NOERROR: 1651 err = 0; 1652 break; 1653 default: 1654 panic("wddump: unknown error type %d", err); 1655 } 1656 if (err != 0) { 1657 printf("\n"); 1658 return err; 1659 } 1660 #else /* WD_DUMP_NOT_TRUSTED */ 1661 /* Let's just talk about this first... */ 1662 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1663 unit, va, cylin, head, sector); 1664 delay(500 * 1000); /* half a second */ 1665 #endif 1666 1667 wddoingadump = 0; 1668 return 0; 1669 } 1670 1671 #ifdef HAS_BAD144_HANDLING 1672 /* 1673 * Internalize the bad sector table. 1674 */ 1675 void 1676 bad144intern(struct wd_softc *wd) 1677 { 1678 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1679 struct disklabel *lp = wd->sc_dk.dk_label; 1680 int i = 0; 1681 1682 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1683 1684 for (; i < NBT_BAD; i++) { 1685 if (bt->bt_bad[i].bt_cyl == 0xffff) 1686 break; 1687 wd->sc_badsect[i] = 1688 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1689 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1690 (bt->bt_bad[i].bt_trksec & 0xff); 1691 } 1692 for (; i < NBT_BAD+1; i++) 1693 wd->sc_badsect[i] = -1; 1694 } 1695 #endif 1696 1697 static void 1698 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1699 { 1700 prop_dictionary_t disk_info, odisk_info, geom; 1701 const char *cp; 1702 1703 disk_info = prop_dictionary_create(); 1704 1705 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1706 cp = "ST506"; 1707 else { 1708 /* XXX Should have a case for ATA here, too. */ 1709 cp = "ESDI"; 1710 } 1711 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1712 1713 geom = prop_dictionary_create(); 1714 1715 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1716 1717 prop_dictionary_set_uint32(geom, "sector-size", 1718 DEV_BSIZE /* XXX 512? */); 1719 1720 prop_dictionary_set_uint16(geom, "sectors-per-track", 1721 wd->sc_params.atap_sectors); 1722 1723 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1724 wd->sc_params.atap_heads); 1725 1726 if (wd->sc_flags & WDF_LBA) 1727 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1728 wd->sc_capacity / 1729 (wd->sc_params.atap_heads * 1730 wd->sc_params.atap_sectors)); 1731 else 1732 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1733 wd->sc_params.atap_cylinders); 1734 1735 prop_dictionary_set(disk_info, "geometry", geom); 1736 prop_object_release(geom); 1737 1738 prop_dictionary_set(device_properties(wd->sc_dev), 1739 "disk-info", disk_info); 1740 1741 /* 1742 * Don't release disk_info here; we keep a reference to it. 1743 * disk_detach() will release it when we go away. 1744 */ 1745 1746 odisk_info = wd->sc_dk.dk_info; 1747 wd->sc_dk.dk_info = disk_info; 1748 if (odisk_info) 1749 prop_object_release(odisk_info); 1750 } 1751 1752 int 1753 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1754 { 1755 1756 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1757 case CMD_AGAIN: 1758 return 1; 1759 case CMD_ERR: 1760 /* 1761 * We `know' there's a drive here; just assume it's old. 1762 * This geometry is only used to read the MBR and print a 1763 * (false) attach message. 1764 */ 1765 strncpy(params->atap_model, "ST506", 1766 sizeof params->atap_model); 1767 params->atap_config = ATA_CFG_FIXED; 1768 params->atap_cylinders = 1024; 1769 params->atap_heads = 8; 1770 params->atap_sectors = 17; 1771 params->atap_multi = 1; 1772 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1773 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1774 /* FALLTHROUGH */ 1775 case CMD_OK: 1776 wd_params_to_properties(wd, params); 1777 return 0; 1778 default: 1779 panic("wd_get_params: bad return code from ata_get_params"); 1780 /* NOTREACHED */ 1781 } 1782 } 1783 1784 int 1785 wd_getcache(struct wd_softc *wd, int *bitsp) 1786 { 1787 struct ataparams params; 1788 1789 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1790 return EIO; 1791 if (params.atap_cmd_set1 == 0x0000 || 1792 params.atap_cmd_set1 == 0xffff || 1793 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1794 *bitsp = 0; 1795 return 0; 1796 } 1797 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1798 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1799 *bitsp |= DKCACHE_WRITE; 1800 1801 return 0; 1802 } 1803 1804 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1805 1806 int 1807 wd_setcache(struct wd_softc *wd, int bits) 1808 { 1809 struct ataparams params; 1810 struct ata_command ata_c; 1811 1812 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1813 return EIO; 1814 1815 if (params.atap_cmd_set1 == 0x0000 || 1816 params.atap_cmd_set1 == 0xffff || 1817 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1818 return EOPNOTSUPP; 1819 1820 if ((bits & DKCACHE_READ) == 0 || 1821 (bits & DKCACHE_SAVE) != 0) 1822 return EOPNOTSUPP; 1823 1824 memset(&ata_c, 0, sizeof(struct ata_command)); 1825 ata_c.r_command = SET_FEATURES; 1826 ata_c.r_st_bmask = 0; 1827 ata_c.r_st_pmask = 0; 1828 ata_c.timeout = 30000; /* 30s timeout */ 1829 ata_c.flags = AT_WAIT; 1830 if (bits & DKCACHE_WRITE) 1831 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1832 else 1833 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1834 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1835 aprint_error_dev(wd->sc_dev, 1836 "wd_setcache command not complete\n"); 1837 return EIO; 1838 } 1839 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1840 char sbuf[sizeof(at_errbits) + 64]; 1841 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1842 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1843 return EIO; 1844 } 1845 return 0; 1846 } 1847 1848 static int 1849 wd_standby(struct wd_softc *wd, int flags) 1850 { 1851 struct ata_command ata_c; 1852 1853 memset(&ata_c, 0, sizeof(struct ata_command)); 1854 ata_c.r_command = WDCC_STANDBY_IMMED; 1855 ata_c.r_st_bmask = WDCS_DRDY; 1856 ata_c.r_st_pmask = WDCS_DRDY; 1857 ata_c.flags = flags; 1858 ata_c.timeout = 30000; /* 30s timeout */ 1859 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1860 aprint_error_dev(wd->sc_dev, 1861 "standby immediate command didn't complete\n"); 1862 return EIO; 1863 } 1864 if (ata_c.flags & AT_ERROR) { 1865 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1866 return ENODEV; 1867 } 1868 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1869 char sbuf[sizeof(at_errbits) + 64]; 1870 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1871 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1872 return EIO; 1873 } 1874 return 0; 1875 } 1876 1877 int 1878 wd_flushcache(struct wd_softc *wd, int flags) 1879 { 1880 struct ata_command ata_c; 1881 1882 /* 1883 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1884 * only ATA-2 and still support it. 1885 */ 1886 if (wd->drvp->ata_vers < 4 && 1887 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1888 wd->sc_params.atap_cmd_set2 == 0xffff)) 1889 return ENODEV; 1890 memset(&ata_c, 0, sizeof(struct ata_command)); 1891 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1892 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1893 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1894 else 1895 ata_c.r_command = WDCC_FLUSHCACHE; 1896 ata_c.r_st_bmask = WDCS_DRDY; 1897 ata_c.r_st_pmask = WDCS_DRDY; 1898 ata_c.flags = flags; 1899 ata_c.timeout = 30000; /* 30s timeout */ 1900 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1901 aprint_error_dev(wd->sc_dev, 1902 "flush cache command didn't complete\n"); 1903 return EIO; 1904 } 1905 if (ata_c.flags & AT_ERROR) { 1906 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1907 return ENODEV; 1908 } 1909 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1910 char sbuf[sizeof(at_errbits) + 64]; 1911 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1912 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1913 sbuf); 1914 return EIO; 1915 } 1916 return 0; 1917 } 1918 1919 bool 1920 wd_shutdown(device_t dev, int how) 1921 { 1922 struct wd_softc *wd = device_private(dev); 1923 1924 /* the adapter needs to be enabled */ 1925 if (wd->atabus->ata_addref(wd->drvp)) 1926 return true; /* no need to complain */ 1927 1928 wd_flushcache(wd, AT_POLL); 1929 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1930 wd_standby(wd, AT_POLL); 1931 return true; 1932 } 1933 1934 /* 1935 * Allocate space for a ioctl queue structure. Mostly taken from 1936 * scsipi_ioctl.c 1937 */ 1938 struct wd_ioctl * 1939 wi_get(void) 1940 { 1941 struct wd_ioctl *wi; 1942 int s; 1943 1944 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1945 buf_init(&wi->wi_bp); 1946 s = splbio(); 1947 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1948 splx(s); 1949 return (wi); 1950 } 1951 1952 /* 1953 * Free an ioctl structure and remove it from our list 1954 */ 1955 1956 void 1957 wi_free(struct wd_ioctl *wi) 1958 { 1959 int s; 1960 1961 s = splbio(); 1962 LIST_REMOVE(wi, wi_list); 1963 splx(s); 1964 buf_destroy(&wi->wi_bp); 1965 free(wi, M_TEMP); 1966 } 1967 1968 /* 1969 * Find a wd_ioctl structure based on the struct buf. 1970 */ 1971 1972 struct wd_ioctl * 1973 wi_find(struct buf *bp) 1974 { 1975 struct wd_ioctl *wi; 1976 int s; 1977 1978 s = splbio(); 1979 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1980 if (bp == &wi->wi_bp) 1981 break; 1982 splx(s); 1983 return (wi); 1984 } 1985 1986 /* 1987 * Ioctl pseudo strategy routine 1988 * 1989 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1990 * happens here is: 1991 * 1992 * - wdioctl() queues a wd_ioctl structure. 1993 * 1994 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1995 * user space I/O is required. If physio() is called, physio() eventually 1996 * calls wdioctlstrategy(). 1997 * 1998 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1999 * to perform the actual command 2000 * 2001 * The reason for the use of the pseudo strategy routine is because 2002 * when doing I/O to/from user space, physio _really_ wants to be in 2003 * the loop. We could put the entire buffer into the ioctl request 2004 * structure, but that won't scale if we want to do things like download 2005 * microcode. 2006 */ 2007 2008 void 2009 wdioctlstrategy(struct buf *bp) 2010 { 2011 struct wd_ioctl *wi; 2012 struct ata_command ata_c; 2013 int error = 0; 2014 2015 wi = wi_find(bp); 2016 if (wi == NULL) { 2017 printf("wdioctlstrategy: " 2018 "No matching ioctl request found in queue\n"); 2019 error = EINVAL; 2020 goto bad; 2021 } 2022 2023 memset(&ata_c, 0, sizeof(ata_c)); 2024 2025 /* 2026 * Abort if physio broke up the transfer 2027 */ 2028 2029 if (bp->b_bcount != wi->wi_atareq.datalen) { 2030 printf("physio split wd ioctl request... cannot proceed\n"); 2031 error = EIO; 2032 goto bad; 2033 } 2034 2035 /* 2036 * Abort if we didn't get a buffer size that was a multiple of 2037 * our sector size (or was larger than NBBY) 2038 */ 2039 2040 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2041 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2042 (1 << NBBY)) { 2043 error = EINVAL; 2044 goto bad; 2045 } 2046 2047 /* 2048 * Make sure a timeout was supplied in the ioctl request 2049 */ 2050 2051 if (wi->wi_atareq.timeout == 0) { 2052 error = EINVAL; 2053 goto bad; 2054 } 2055 2056 if (wi->wi_atareq.flags & ATACMD_READ) 2057 ata_c.flags |= AT_READ; 2058 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2059 ata_c.flags |= AT_WRITE; 2060 2061 if (wi->wi_atareq.flags & ATACMD_READREG) 2062 ata_c.flags |= AT_READREG; 2063 2064 ata_c.flags |= AT_WAIT; 2065 2066 ata_c.timeout = wi->wi_atareq.timeout; 2067 ata_c.r_command = wi->wi_atareq.command; 2068 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2069 ata_c.r_cyl = wi->wi_atareq.cylinder; 2070 ata_c.r_sector = wi->wi_atareq.sec_num; 2071 ata_c.r_count = wi->wi_atareq.sec_count; 2072 ata_c.r_features = wi->wi_atareq.features; 2073 ata_c.r_st_bmask = WDCS_DRDY; 2074 ata_c.r_st_pmask = WDCS_DRDY; 2075 ata_c.data = wi->wi_bp.b_data; 2076 ata_c.bcount = wi->wi_bp.b_bcount; 2077 2078 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2079 != ATACMD_COMPLETE) { 2080 wi->wi_atareq.retsts = ATACMD_ERROR; 2081 goto bad; 2082 } 2083 2084 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2085 if (ata_c.flags & AT_ERROR) { 2086 wi->wi_atareq.retsts = ATACMD_ERROR; 2087 wi->wi_atareq.error = ata_c.r_error; 2088 } else if (ata_c.flags & AT_DF) 2089 wi->wi_atareq.retsts = ATACMD_DF; 2090 else 2091 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2092 } else { 2093 wi->wi_atareq.retsts = ATACMD_OK; 2094 if (wi->wi_atareq.flags & ATACMD_READREG) { 2095 wi->wi_atareq.head = ata_c.r_head ; 2096 wi->wi_atareq.cylinder = ata_c.r_cyl; 2097 wi->wi_atareq.sec_num = ata_c.r_sector; 2098 wi->wi_atareq.sec_count = ata_c.r_count; 2099 wi->wi_atareq.features = ata_c.r_features; 2100 wi->wi_atareq.error = ata_c.r_error; 2101 } 2102 } 2103 2104 bp->b_error = 0; 2105 biodone(bp); 2106 return; 2107 bad: 2108 bp->b_error = error; 2109 biodone(bp); 2110 } 2111
Indexes created Mon Sep 29 03:10:08 GMT 2025