wd.c revision 1.381
1 /* $NetBSD: wd.c,v 1.381 2010/01/08 19:48:12 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 1.381 2010/01/08 19:48:12 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, 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 __wdstart(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, 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 __wdstart(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)); 598 599 if (__predict_false(bp->b_error != 0)) { 600 /* 601 * Propagate the error. If this was the first half of 602 * the original transfer, make sure to account for that 603 * in the residual. 604 */ 605 if (bp->b_data == obp->b_data) 606 bp->b_resid += bp->b_bcount; 607 goto done; 608 } 609 610 /* 611 * If this was the second half of the transfer, we're all done! 612 */ 613 if (bp->b_data != obp->b_data) 614 goto done; 615 616 /* 617 * Advance the pointer to the second half and issue that command 618 * using the same opening. 619 */ 620 bp->b_flags = obp->b_flags; 621 bp->b_oflags = obp->b_oflags; 622 bp->b_cflags = obp->b_cflags; 623 bp->b_data = (char *)bp->b_data + bp->b_bcount; 624 bp->b_blkno += (bp->b_bcount / 512); 625 bp->b_rawblkno += (bp->b_bcount / 512); 626 __wdstart(sc, bp); 627 return; 628 629 done: 630 obp->b_error = bp->b_error; 631 obp->b_resid = bp->b_resid; 632 putiobuf(bp); 633 biodone(obp); 634 sc->openings++; 635 /* wddone() will call wdstart() */ 636 } 637 638 void 639 __wdstart(struct wd_softc *wd, struct buf *bp) 640 { 641 642 /* 643 * Deal with the "split mod15 write" quirk. We just divide the 644 * transfer in two, doing the first half and then then second half 645 * with the same command opening. 646 * 647 * Note we MUST do this here, because we can't let insertion 648 * into the bufq cause the transfers to be re-merged. 649 */ 650 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 651 (bp->b_flags & B_READ) == 0 && 652 bp->b_bcount > 512 && 653 ((bp->b_bcount / 512) % 15) == 1)) { 654 struct buf *nbp; 655 656 /* already at splbio */ 657 nbp = getiobuf(NULL, false); 658 if (__predict_false(nbp == NULL)) { 659 /* No memory -- fail the iop. */ 660 bp->b_error = ENOMEM; 661 bp->b_resid = bp->b_bcount; 662 biodone(bp); 663 wd->openings++; 664 return; 665 } 666 667 nbp->b_error = 0; 668 nbp->b_proc = bp->b_proc; 669 nbp->b_dev = bp->b_dev; 670 671 nbp->b_bcount = bp->b_bcount / 2; 672 nbp->b_bufsize = bp->b_bcount / 2; 673 nbp->b_data = bp->b_data; 674 675 nbp->b_blkno = bp->b_blkno; 676 nbp->b_rawblkno = bp->b_rawblkno; 677 678 nbp->b_flags = bp->b_flags; 679 nbp->b_oflags = bp->b_oflags; 680 nbp->b_cflags = bp->b_cflags; 681 nbp->b_iodone = wd_split_mod15_write; 682 683 /* Put ptr to orig buf in b_private and use new buf */ 684 nbp->b_private = bp; 685 686 BIO_COPYPRIO(nbp, bp); 687 688 bp = nbp; 689 } 690 691 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 692 wd->sc_wdc_bio.bcount = bp->b_bcount; 693 wd->sc_wdc_bio.databuf = bp->b_data; 694 wd->sc_wdc_bio.blkdone =0; 695 wd->sc_bp = bp; 696 /* 697 * If we're retrying, retry in single-sector mode. This will give us 698 * the sector number of the problem, and will eventually allow the 699 * transfer to succeed. 700 */ 701 if (wd->retries >= WDIORETRIES_SINGLE) 702 wd->sc_wdc_bio.flags = ATA_SINGLE; 703 else 704 wd->sc_wdc_bio.flags = 0; 705 if (wd->sc_flags & WDF_LBA48 && 706 (wd->sc_wdc_bio.blkno + 707 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 708 wd->sc_capacity28) 709 wd->sc_wdc_bio.flags |= ATA_LBA48; 710 if (wd->sc_flags & WDF_LBA) 711 wd->sc_wdc_bio.flags |= ATA_LBA; 712 if (bp->b_flags & B_READ) 713 wd->sc_wdc_bio.flags |= ATA_READ; 714 /* Instrumentation. */ 715 disk_busy(&wd->sc_dk); 716 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 717 case ATACMD_TRY_AGAIN: 718 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 719 break; 720 case ATACMD_QUEUED: 721 case ATACMD_COMPLETE: 722 break; 723 default: 724 panic("__wdstart: bad return code from ata_bio()"); 725 } 726 } 727 728 void 729 wddone(void *v) 730 { 731 struct wd_softc *wd = device_private(v); 732 struct buf *bp = wd->sc_bp; 733 const char *errmsg; 734 int do_perror = 0; 735 736 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 737 DEBUG_XFERS); 738 if (bp == NULL) 739 return; 740 bp->b_resid = wd->sc_wdc_bio.bcount; 741 switch (wd->sc_wdc_bio.error) { 742 case ERR_DMA: 743 errmsg = "DMA error"; 744 goto retry; 745 case ERR_DF: 746 errmsg = "device fault"; 747 goto retry; 748 case TIMEOUT: 749 errmsg = "device timeout"; 750 goto retry; 751 case ERR_RESET: 752 errmsg = "channel reset"; 753 goto retry2; 754 case ERROR: 755 /* Don't care about media change bits */ 756 if (wd->sc_wdc_bio.r_error != 0 && 757 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 758 goto noerror; 759 errmsg = "error"; 760 do_perror = 1; 761 retry: /* Just reset and retry. Can we do more ? */ 762 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 763 retry2: 764 diskerr(bp, "wd", errmsg, LOG_PRINTF, 765 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 766 if (wd->retries < WDIORETRIES) 767 printf(", retrying"); 768 printf("\n"); 769 if (do_perror) 770 wdperror(wd); 771 if (wd->retries < WDIORETRIES) { 772 wd->retries++; 773 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 774 wdrestart, wd); 775 return; 776 } 777 778 #ifdef WD_SOFTBADSECT 779 /* 780 * Not all errors indicate a failed block but those that do, 781 * put the block on the bad-block list for the device. Only 782 * do this for reads because the drive should do it for writes, 783 * itself, according to Manuel. 784 */ 785 if ((bp->b_flags & B_READ) && 786 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 787 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 788 struct disk_badsectors *dbs; 789 790 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 791 dbs->dbs_min = bp->b_rawblkno; 792 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 793 microtime(&dbs->dbs_failedat); 794 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 795 wd->sc_bscount++; 796 } 797 #endif 798 bp->b_error = EIO; 799 break; 800 case NOERROR: 801 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 802 aprint_error_dev(wd->sc_dev, 803 "soft error (corrected)\n"); 804 break; 805 case ERR_NODEV: 806 bp->b_error = EIO; 807 break; 808 } 809 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 810 (bp->b_flags & B_READ)); 811 #if NRND > 0 812 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 813 #endif 814 /* XXX Yuck, but we don't want to increment openings in this case */ 815 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 816 biodone(bp); 817 else { 818 biodone(bp); 819 wd->openings++; 820 } 821 wdstart(wd); 822 } 823 824 void 825 wdrestart(void *v) 826 { 827 struct wd_softc *wd = v; 828 struct buf *bp = wd->sc_bp; 829 int s; 830 831 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 832 DEBUG_XFERS); 833 s = splbio(); 834 __wdstart(v, bp); 835 splx(s); 836 } 837 838 int 839 wdread(dev_t dev, struct uio *uio, int flags) 840 { 841 842 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 843 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 844 } 845 846 int 847 wdwrite(dev_t dev, struct uio *uio, int flags) 848 { 849 850 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 851 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 852 } 853 854 int 855 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 856 { 857 struct wd_softc *wd; 858 int part, error; 859 860 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 861 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 862 if (wd == NULL) 863 return (ENXIO); 864 865 if (! device_is_active(wd->sc_dev)) 866 return (ENODEV); 867 868 part = WDPART(dev); 869 870 mutex_enter(&wd->sc_dk.dk_openlock); 871 872 /* 873 * If there are wedges, and this is not RAW_PART, then we 874 * need to fail. 875 */ 876 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 877 error = EBUSY; 878 goto bad1; 879 } 880 881 /* 882 * If this is the first open of this device, add a reference 883 * to the adapter. 884 */ 885 if (wd->sc_dk.dk_openmask == 0 && 886 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 887 goto bad1; 888 889 if (wd->sc_dk.dk_openmask != 0) { 890 /* 891 * If any partition is open, but the disk has been invalidated, 892 * disallow further opens. 893 */ 894 if ((wd->sc_flags & WDF_LOADED) == 0) { 895 error = EIO; 896 goto bad2; 897 } 898 } else { 899 if ((wd->sc_flags & WDF_LOADED) == 0) { 900 wd->sc_flags |= WDF_LOADED; 901 902 /* Load the physical device parameters. */ 903 wd_get_params(wd, AT_WAIT, &wd->sc_params); 904 905 /* Load the partition info if not already loaded. */ 906 wdgetdisklabel(wd); 907 } 908 } 909 910 /* Check that the partition exists. */ 911 if (part != RAW_PART && 912 (part >= wd->sc_dk.dk_label->d_npartitions || 913 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 914 error = ENXIO; 915 goto bad2; 916 } 917 918 /* Insure only one open at a time. */ 919 switch (fmt) { 920 case S_IFCHR: 921 wd->sc_dk.dk_copenmask |= (1 << part); 922 break; 923 case S_IFBLK: 924 wd->sc_dk.dk_bopenmask |= (1 << part); 925 break; 926 } 927 wd->sc_dk.dk_openmask = 928 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 929 930 mutex_exit(&wd->sc_dk.dk_openlock); 931 return 0; 932 933 bad2: 934 if (wd->sc_dk.dk_openmask == 0) 935 wd->atabus->ata_delref(wd->drvp); 936 bad1: 937 mutex_exit(&wd->sc_dk.dk_openlock); 938 return error; 939 } 940 941 /* 942 * Caller must hold wd->sc_dk.dk_openlock. 943 */ 944 static int 945 wdlastclose(device_t self) 946 { 947 struct wd_softc *wd = device_private(self); 948 949 wd_flushcache(wd, AT_WAIT); 950 951 if (! (wd->sc_flags & WDF_KLABEL)) 952 wd->sc_flags &= ~WDF_LOADED; 953 954 wd->atabus->ata_delref(wd->drvp); 955 956 return 0; 957 } 958 959 int 960 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 961 { 962 struct wd_softc *wd = 963 device_lookup_private(&wd_cd, WDUNIT(dev)); 964 int part = WDPART(dev); 965 966 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 967 968 mutex_enter(&wd->sc_dk.dk_openlock); 969 970 switch (fmt) { 971 case S_IFCHR: 972 wd->sc_dk.dk_copenmask &= ~(1 << part); 973 break; 974 case S_IFBLK: 975 wd->sc_dk.dk_bopenmask &= ~(1 << part); 976 break; 977 } 978 wd->sc_dk.dk_openmask = 979 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 980 981 if (wd->sc_dk.dk_openmask == 0) 982 wdlastclose(wd->sc_dev); 983 984 mutex_exit(&wd->sc_dk.dk_openlock); 985 return 0; 986 } 987 988 void 989 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 990 { 991 992 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 993 memset(lp, 0, sizeof(struct disklabel)); 994 995 lp->d_secsize = DEV_BSIZE; 996 lp->d_ntracks = wd->sc_params.atap_heads; 997 lp->d_nsectors = wd->sc_params.atap_sectors; 998 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 999 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1000 wd->sc_params.atap_cylinders; 1001 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1002 1003 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1004 lp->d_type = DTYPE_ST506; 1005 else 1006 lp->d_type = DTYPE_ESDI; 1007 1008 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1009 strncpy(lp->d_packname, "fictitious", 16); 1010 if (wd->sc_capacity > UINT32_MAX) 1011 lp->d_secperunit = UINT32_MAX; 1012 else 1013 lp->d_secperunit = wd->sc_capacity; 1014 lp->d_rpm = 3600; 1015 lp->d_interleave = 1; 1016 lp->d_flags = 0; 1017 1018 lp->d_partitions[RAW_PART].p_offset = 0; 1019 lp->d_partitions[RAW_PART].p_size = 1020 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1021 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1022 lp->d_npartitions = RAW_PART + 1; 1023 1024 lp->d_magic = DISKMAGIC; 1025 lp->d_magic2 = DISKMAGIC; 1026 lp->d_checksum = dkcksum(lp); 1027 } 1028 1029 /* 1030 * Fabricate a default disk label, and try to read the correct one. 1031 */ 1032 void 1033 wdgetdisklabel(struct wd_softc *wd) 1034 { 1035 struct disklabel *lp = wd->sc_dk.dk_label; 1036 const char *errstring; 1037 int s; 1038 1039 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1040 1041 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1042 1043 wdgetdefaultlabel(wd, lp); 1044 1045 wd->sc_badsect[0] = -1; 1046 1047 if (wd->drvp->state > RESET) { 1048 s = splbio(); 1049 wd->drvp->drive_flags |= DRIVE_RESET; 1050 splx(s); 1051 } 1052 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1053 RAW_PART), wdstrategy, lp, 1054 wd->sc_dk.dk_cpulabel); 1055 if (errstring) { 1056 /* 1057 * This probably happened because the drive's default 1058 * geometry doesn't match the DOS geometry. We 1059 * assume the DOS geometry is now in the label and try 1060 * again. XXX This is a kluge. 1061 */ 1062 if (wd->drvp->state > RESET) { 1063 s = splbio(); 1064 wd->drvp->drive_flags |= DRIVE_RESET; 1065 splx(s); 1066 } 1067 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1068 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1069 } 1070 if (errstring) { 1071 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1072 return; 1073 } 1074 1075 if (wd->drvp->state > RESET) { 1076 s = splbio(); 1077 wd->drvp->drive_flags |= DRIVE_RESET; 1078 splx(s); 1079 } 1080 #ifdef HAS_BAD144_HANDLING 1081 if ((lp->d_flags & D_BADSECT) != 0) 1082 bad144intern(wd); 1083 #endif 1084 } 1085 1086 void 1087 wdperror(const struct wd_softc *wd) 1088 { 1089 static const char *const errstr0_3[] = {"address mark not found", 1090 "track 0 not found", "aborted command", "media change requested", 1091 "id not found", "media changed", "uncorrectable data error", 1092 "bad block detected"}; 1093 static const char *const errstr4_5[] = { 1094 "obsolete (address mark not found)", 1095 "no media/write protected", "aborted command", 1096 "media change requested", "id not found", "media changed", 1097 "uncorrectable data error", "interface CRC error"}; 1098 const char *const *errstr; 1099 int i; 1100 const char *sep = ""; 1101 1102 const char *devname = device_xname(wd->sc_dev); 1103 struct ata_drive_datas *drvp = wd->drvp; 1104 int errno = wd->sc_wdc_bio.r_error; 1105 1106 if (drvp->ata_vers >= 4) 1107 errstr = errstr4_5; 1108 else 1109 errstr = errstr0_3; 1110 1111 printf("%s: (", devname); 1112 1113 if (errno == 0) 1114 printf("error not notified"); 1115 1116 for (i = 0; i < 8; i++) { 1117 if (errno & (1 << i)) { 1118 printf("%s%s", sep, errstr[i]); 1119 sep = ", "; 1120 } 1121 } 1122 printf(")\n"); 1123 } 1124 1125 int 1126 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1127 { 1128 struct wd_softc *wd = 1129 device_lookup_private(&wd_cd, WDUNIT(dev)); 1130 int error = 0, s; 1131 #ifdef __HAVE_OLD_DISKLABEL 1132 struct disklabel *newlabel = NULL; 1133 #endif 1134 1135 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1136 1137 if ((wd->sc_flags & WDF_LOADED) == 0) 1138 return EIO; 1139 1140 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1141 if (error != EPASSTHROUGH) 1142 return (error); 1143 1144 switch (xfer) { 1145 #ifdef HAS_BAD144_HANDLING 1146 case DIOCSBAD: 1147 if ((flag & FWRITE) == 0) 1148 return EBADF; 1149 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1150 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1151 bad144intern(wd); 1152 return 0; 1153 #endif 1154 #ifdef WD_SOFTBADSECT 1155 case DIOCBSLIST : 1156 { 1157 u_int32_t count, missing, skip; 1158 struct disk_badsecinfo dbsi; 1159 struct disk_badsectors *dbs; 1160 size_t available; 1161 uint8_t *laddr; 1162 1163 dbsi = *(struct disk_badsecinfo *)addr; 1164 missing = wd->sc_bscount; 1165 count = 0; 1166 available = dbsi.dbsi_bufsize; 1167 skip = dbsi.dbsi_skip; 1168 laddr = (uint8_t *)dbsi.dbsi_buffer; 1169 1170 /* 1171 * We start this loop with the expectation that all of the 1172 * entries will be missed and decrement this counter each 1173 * time we either skip over one (already copied out) or 1174 * we actually copy it back to user space. The structs 1175 * holding the bad sector information are copied directly 1176 * back to user space whilst the summary is returned via 1177 * the struct passed in via the ioctl. 1178 */ 1179 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1180 if (skip > 0) { 1181 missing--; 1182 skip--; 1183 continue; 1184 } 1185 if (available < sizeof(*dbs)) 1186 break; 1187 available -= sizeof(*dbs); 1188 copyout(dbs, laddr, sizeof(*dbs)); 1189 laddr += sizeof(*dbs); 1190 missing--; 1191 count++; 1192 } 1193 dbsi.dbsi_left = missing; 1194 dbsi.dbsi_copied = count; 1195 *(struct disk_badsecinfo *)addr = dbsi; 1196 return 0; 1197 } 1198 1199 case DIOCBSFLUSH : 1200 /* Clean out the bad sector list */ 1201 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1202 void *head = SLIST_FIRST(&wd->sc_bslist); 1203 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1204 free(head, M_TEMP); 1205 } 1206 wd->sc_bscount = 0; 1207 return 0; 1208 #endif 1209 case DIOCGDINFO: 1210 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1211 return 0; 1212 #ifdef __HAVE_OLD_DISKLABEL 1213 case ODIOCGDINFO: 1214 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1215 if (newlabel == NULL) 1216 return EIO; 1217 *newlabel = *(wd->sc_dk.dk_label); 1218 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1219 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1220 else 1221 error = ENOTTY; 1222 free(newlabel, M_TEMP); 1223 return error; 1224 #endif 1225 1226 case DIOCGPART: 1227 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1228 ((struct partinfo *)addr)->part = 1229 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1230 return 0; 1231 1232 case DIOCWDINFO: 1233 case DIOCSDINFO: 1234 #ifdef __HAVE_OLD_DISKLABEL 1235 case ODIOCWDINFO: 1236 case ODIOCSDINFO: 1237 #endif 1238 { 1239 struct disklabel *lp; 1240 1241 if ((flag & FWRITE) == 0) 1242 return EBADF; 1243 1244 #ifdef __HAVE_OLD_DISKLABEL 1245 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1246 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1247 if (newlabel == NULL) 1248 return EIO; 1249 memset(newlabel, 0, sizeof newlabel); 1250 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1251 lp = newlabel; 1252 } else 1253 #endif 1254 lp = (struct disklabel *)addr; 1255 1256 mutex_enter(&wd->sc_dk.dk_openlock); 1257 wd->sc_flags |= WDF_LABELLING; 1258 1259 error = setdisklabel(wd->sc_dk.dk_label, 1260 lp, /*wd->sc_dk.dk_openmask : */0, 1261 wd->sc_dk.dk_cpulabel); 1262 if (error == 0) { 1263 if (wd->drvp->state > RESET) { 1264 s = splbio(); 1265 wd->drvp->drive_flags |= DRIVE_RESET; 1266 splx(s); 1267 } 1268 if (xfer == DIOCWDINFO 1269 #ifdef __HAVE_OLD_DISKLABEL 1270 || xfer == ODIOCWDINFO 1271 #endif 1272 ) 1273 error = writedisklabel(WDLABELDEV(dev), 1274 wdstrategy, wd->sc_dk.dk_label, 1275 wd->sc_dk.dk_cpulabel); 1276 } 1277 1278 wd->sc_flags &= ~WDF_LABELLING; 1279 mutex_exit(&wd->sc_dk.dk_openlock); 1280 #ifdef __HAVE_OLD_DISKLABEL 1281 if (newlabel != NULL) 1282 free(newlabel, M_TEMP); 1283 #endif 1284 return error; 1285 } 1286 1287 case DIOCKLABEL: 1288 if (*(int *)addr) 1289 wd->sc_flags |= WDF_KLABEL; 1290 else 1291 wd->sc_flags &= ~WDF_KLABEL; 1292 return 0; 1293 1294 case DIOCWLABEL: 1295 if ((flag & FWRITE) == 0) 1296 return EBADF; 1297 if (*(int *)addr) 1298 wd->sc_flags |= WDF_WLABEL; 1299 else 1300 wd->sc_flags &= ~WDF_WLABEL; 1301 return 0; 1302 1303 case DIOCGDEFLABEL: 1304 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1305 return 0; 1306 #ifdef __HAVE_OLD_DISKLABEL 1307 case ODIOCGDEFLABEL: 1308 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1309 if (newlabel == NULL) 1310 return EIO; 1311 wdgetdefaultlabel(wd, newlabel); 1312 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1313 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1314 else 1315 error = ENOTTY; 1316 free(newlabel, M_TEMP); 1317 return error; 1318 #endif 1319 1320 #ifdef notyet 1321 case DIOCWFORMAT: 1322 if ((flag & FWRITE) == 0) 1323 return EBADF; 1324 { 1325 register struct format_op *fop; 1326 struct iovec aiov; 1327 struct uio auio; 1328 1329 fop = (struct format_op *)addr; 1330 aiov.iov_base = fop->df_buf; 1331 aiov.iov_len = fop->df_count; 1332 auio.uio_iov = &aiov; 1333 auio.uio_iovcnt = 1; 1334 auio.uio_resid = fop->df_count; 1335 auio.uio_offset = 1336 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1337 auio.uio_vmspace = l->l_proc->p_vmspace; 1338 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1339 &auio); 1340 fop->df_count -= auio.uio_resid; 1341 fop->df_reg[0] = wdc->sc_status; 1342 fop->df_reg[1] = wdc->sc_error; 1343 return error; 1344 } 1345 #endif 1346 case DIOCGCACHE: 1347 return wd_getcache(wd, (int *)addr); 1348 1349 case DIOCSCACHE: 1350 return wd_setcache(wd, *(int *)addr); 1351 1352 case DIOCCACHESYNC: 1353 return wd_flushcache(wd, AT_WAIT); 1354 1355 case ATAIOCCOMMAND: 1356 /* 1357 * Make sure this command is (relatively) safe first 1358 */ 1359 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1360 (flag & FWRITE) == 0) 1361 return (EBADF); 1362 { 1363 struct wd_ioctl *wi; 1364 atareq_t *atareq = (atareq_t *) addr; 1365 int error1; 1366 1367 wi = wi_get(); 1368 wi->wi_softc = wd; 1369 wi->wi_atareq = *atareq; 1370 1371 if (atareq->datalen && atareq->flags & 1372 (ATACMD_READ | ATACMD_WRITE)) { 1373 void *tbuf; 1374 if (atareq->datalen < DEV_BSIZE 1375 && atareq->command == WDCC_IDENTIFY) { 1376 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1377 wi->wi_iov.iov_base = tbuf; 1378 wi->wi_iov.iov_len = DEV_BSIZE; 1379 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1380 } else { 1381 tbuf = NULL; 1382 wi->wi_iov.iov_base = atareq->databuf; 1383 wi->wi_iov.iov_len = atareq->datalen; 1384 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1385 } 1386 wi->wi_uio.uio_iov = &wi->wi_iov; 1387 wi->wi_uio.uio_iovcnt = 1; 1388 wi->wi_uio.uio_resid = atareq->datalen; 1389 wi->wi_uio.uio_offset = 0; 1390 wi->wi_uio.uio_rw = 1391 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1392 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1393 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1394 minphys, &wi->wi_uio); 1395 if (tbuf != NULL && error1 == 0) { 1396 error1 = copyout(tbuf, atareq->databuf, 1397 atareq->datalen); 1398 free(tbuf, M_TEMP); 1399 } 1400 } else { 1401 /* No need to call physio if we don't have any 1402 user data */ 1403 wi->wi_bp.b_flags = 0; 1404 wi->wi_bp.b_data = 0; 1405 wi->wi_bp.b_bcount = 0; 1406 wi->wi_bp.b_dev = 0; 1407 wi->wi_bp.b_proc = l->l_proc; 1408 wdioctlstrategy(&wi->wi_bp); 1409 error1 = wi->wi_bp.b_error; 1410 } 1411 *atareq = wi->wi_atareq; 1412 wi_free(wi); 1413 return(error1); 1414 } 1415 1416 case DIOCAWEDGE: 1417 { 1418 struct dkwedge_info *dkw = (void *) addr; 1419 1420 if ((flag & FWRITE) == 0) 1421 return (EBADF); 1422 1423 /* If the ioctl happens here, the parent is us. */ 1424 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1425 return (dkwedge_add(dkw)); 1426 } 1427 1428 case DIOCDWEDGE: 1429 { 1430 struct dkwedge_info *dkw = (void *) addr; 1431 1432 if ((flag & FWRITE) == 0) 1433 return (EBADF); 1434 1435 /* If the ioctl happens here, the parent is us. */ 1436 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1437 return (dkwedge_del(dkw)); 1438 } 1439 1440 case DIOCLWEDGES: 1441 { 1442 struct dkwedge_list *dkwl = (void *) addr; 1443 1444 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1445 } 1446 1447 case DIOCGSTRATEGY: 1448 { 1449 struct disk_strategy *dks = (void *)addr; 1450 1451 s = splbio(); 1452 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1453 sizeof(dks->dks_name)); 1454 splx(s); 1455 dks->dks_paramlen = 0; 1456 1457 return 0; 1458 } 1459 1460 case DIOCSSTRATEGY: 1461 { 1462 struct disk_strategy *dks = (void *)addr; 1463 struct bufq_state *new; 1464 struct bufq_state *old; 1465 1466 if ((flag & FWRITE) == 0) { 1467 return EBADF; 1468 } 1469 if (dks->dks_param != NULL) { 1470 return EINVAL; 1471 } 1472 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1473 error = bufq_alloc(&new, dks->dks_name, 1474 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1475 if (error) { 1476 return error; 1477 } 1478 s = splbio(); 1479 old = wd->sc_q; 1480 bufq_move(new, old); 1481 wd->sc_q = new; 1482 splx(s); 1483 bufq_free(old); 1484 1485 return 0; 1486 } 1487 1488 default: 1489 return ENOTTY; 1490 } 1491 1492 #ifdef DIAGNOSTIC 1493 panic("wdioctl: impossible"); 1494 #endif 1495 } 1496 1497 #ifdef B_FORMAT 1498 int 1499 wdformat(struct buf *bp) 1500 { 1501 1502 bp->b_flags |= B_FORMAT; 1503 return wdstrategy(bp); 1504 } 1505 #endif 1506 1507 int 1508 wdsize(dev_t dev) 1509 { 1510 struct wd_softc *wd; 1511 int part, omask; 1512 int size; 1513 1514 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1515 1516 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1517 if (wd == NULL) 1518 return (-1); 1519 1520 part = WDPART(dev); 1521 omask = wd->sc_dk.dk_openmask & (1 << part); 1522 1523 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1524 return (-1); 1525 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1526 size = -1; 1527 else 1528 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1529 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1530 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1531 return (-1); 1532 return (size); 1533 } 1534 1535 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1536 static int wddoingadump = 0; 1537 static int wddumprecalibrated = 0; 1538 1539 /* 1540 * Dump core after a system crash. 1541 */ 1542 int 1543 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1544 { 1545 struct wd_softc *wd; /* disk unit to do the I/O */ 1546 struct disklabel *lp; /* disk's disklabel */ 1547 int part, err; 1548 int nblks; /* total number of sectors left to write */ 1549 1550 /* Check if recursive dump; if so, punt. */ 1551 if (wddoingadump) 1552 return EFAULT; 1553 wddoingadump = 1; 1554 1555 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1556 if (wd == NULL) 1557 return (ENXIO); 1558 1559 part = WDPART(dev); 1560 1561 /* Convert to disk sectors. Request must be a multiple of size. */ 1562 lp = wd->sc_dk.dk_label; 1563 if ((size % lp->d_secsize) != 0) 1564 return EFAULT; 1565 nblks = size / lp->d_secsize; 1566 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1567 1568 /* Check transfer bounds against partition size. */ 1569 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1570 return EINVAL; 1571 1572 /* Offset block number to start of partition. */ 1573 blkno += lp->d_partitions[part].p_offset; 1574 1575 /* Recalibrate, if first dump transfer. */ 1576 if (wddumprecalibrated == 0) { 1577 wddumprecalibrated = 1; 1578 (*wd->atabus->ata_reset_drive)(wd->drvp, 1579 AT_POLL | AT_RST_EMERG); 1580 wd->drvp->state = RESET; 1581 } 1582 1583 wd->sc_bp = NULL; 1584 wd->sc_wdc_bio.blkno = blkno; 1585 wd->sc_wdc_bio.flags = ATA_POLL; 1586 if (wd->sc_flags & WDF_LBA48 && 1587 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1588 wd->sc_wdc_bio.flags |= ATA_LBA48; 1589 if (wd->sc_flags & WDF_LBA) 1590 wd->sc_wdc_bio.flags |= ATA_LBA; 1591 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1592 wd->sc_wdc_bio.databuf = va; 1593 #ifndef WD_DUMP_NOT_TRUSTED 1594 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1595 case ATACMD_TRY_AGAIN: 1596 panic("wddump: try again"); 1597 break; 1598 case ATACMD_QUEUED: 1599 panic("wddump: polled command has been queued"); 1600 break; 1601 case ATACMD_COMPLETE: 1602 break; 1603 default: 1604 panic("wddump: unknown atacmd code %d", err); 1605 } 1606 switch(err = wd->sc_wdc_bio.error) { 1607 case TIMEOUT: 1608 printf("wddump: device timed out"); 1609 err = EIO; 1610 break; 1611 case ERR_DF: 1612 printf("wddump: drive fault"); 1613 err = EIO; 1614 break; 1615 case ERR_DMA: 1616 printf("wddump: DMA error"); 1617 err = EIO; 1618 break; 1619 case ERROR: 1620 printf("wddump: "); 1621 wdperror(wd); 1622 err = EIO; 1623 break; 1624 case NOERROR: 1625 err = 0; 1626 break; 1627 default: 1628 panic("wddump: unknown error type %d", err); 1629 } 1630 if (err != 0) { 1631 printf("\n"); 1632 return err; 1633 } 1634 #else /* WD_DUMP_NOT_TRUSTED */ 1635 /* Let's just talk about this first... */ 1636 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1637 unit, va, cylin, head, sector); 1638 delay(500 * 1000); /* half a second */ 1639 #endif 1640 1641 wddoingadump = 0; 1642 return 0; 1643 } 1644 1645 #ifdef HAS_BAD144_HANDLING 1646 /* 1647 * Internalize the bad sector table. 1648 */ 1649 void 1650 bad144intern(struct wd_softc *wd) 1651 { 1652 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1653 struct disklabel *lp = wd->sc_dk.dk_label; 1654 int i = 0; 1655 1656 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1657 1658 for (; i < NBT_BAD; i++) { 1659 if (bt->bt_bad[i].bt_cyl == 0xffff) 1660 break; 1661 wd->sc_badsect[i] = 1662 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1663 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1664 (bt->bt_bad[i].bt_trksec & 0xff); 1665 } 1666 for (; i < NBT_BAD+1; i++) 1667 wd->sc_badsect[i] = -1; 1668 } 1669 #endif 1670 1671 static void 1672 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1673 { 1674 prop_dictionary_t disk_info, odisk_info, geom; 1675 const char *cp; 1676 1677 disk_info = prop_dictionary_create(); 1678 1679 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1680 cp = "ST506"; 1681 else { 1682 /* XXX Should have a case for ATA here, too. */ 1683 cp = "ESDI"; 1684 } 1685 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1686 1687 geom = prop_dictionary_create(); 1688 1689 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1690 1691 prop_dictionary_set_uint32(geom, "sector-size", 1692 DEV_BSIZE /* XXX 512? */); 1693 1694 prop_dictionary_set_uint16(geom, "sectors-per-track", 1695 wd->sc_params.atap_sectors); 1696 1697 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1698 wd->sc_params.atap_heads); 1699 1700 if (wd->sc_flags & WDF_LBA) 1701 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1702 wd->sc_capacity / 1703 (wd->sc_params.atap_heads * 1704 wd->sc_params.atap_sectors)); 1705 else 1706 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1707 wd->sc_params.atap_cylinders); 1708 1709 prop_dictionary_set(disk_info, "geometry", geom); 1710 prop_object_release(geom); 1711 1712 prop_dictionary_set(device_properties(wd->sc_dev), 1713 "disk-info", disk_info); 1714 1715 /* 1716 * Don't release disk_info here; we keep a reference to it. 1717 * disk_detach() will release it when we go away. 1718 */ 1719 1720 odisk_info = wd->sc_dk.dk_info; 1721 wd->sc_dk.dk_info = disk_info; 1722 if (odisk_info) 1723 prop_object_release(odisk_info); 1724 } 1725 1726 int 1727 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1728 { 1729 1730 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1731 case CMD_AGAIN: 1732 return 1; 1733 case CMD_ERR: 1734 /* 1735 * We `know' there's a drive here; just assume it's old. 1736 * This geometry is only used to read the MBR and print a 1737 * (false) attach message. 1738 */ 1739 strncpy(params->atap_model, "ST506", 1740 sizeof params->atap_model); 1741 params->atap_config = ATA_CFG_FIXED; 1742 params->atap_cylinders = 1024; 1743 params->atap_heads = 8; 1744 params->atap_sectors = 17; 1745 params->atap_multi = 1; 1746 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1747 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1748 /* FALLTHROUGH */ 1749 case CMD_OK: 1750 wd_params_to_properties(wd, params); 1751 return 0; 1752 default: 1753 panic("wd_get_params: bad return code from ata_get_params"); 1754 /* NOTREACHED */ 1755 } 1756 } 1757 1758 int 1759 wd_getcache(struct wd_softc *wd, int *bitsp) 1760 { 1761 struct ataparams params; 1762 1763 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1764 return EIO; 1765 if (params.atap_cmd_set1 == 0x0000 || 1766 params.atap_cmd_set1 == 0xffff || 1767 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1768 *bitsp = 0; 1769 return 0; 1770 } 1771 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1772 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1773 *bitsp |= DKCACHE_WRITE; 1774 1775 return 0; 1776 } 1777 1778 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1779 1780 int 1781 wd_setcache(struct wd_softc *wd, int bits) 1782 { 1783 struct ataparams params; 1784 struct ata_command ata_c; 1785 1786 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1787 return EIO; 1788 1789 if (params.atap_cmd_set1 == 0x0000 || 1790 params.atap_cmd_set1 == 0xffff || 1791 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1792 return EOPNOTSUPP; 1793 1794 if ((bits & DKCACHE_READ) == 0 || 1795 (bits & DKCACHE_SAVE) != 0) 1796 return EOPNOTSUPP; 1797 1798 memset(&ata_c, 0, sizeof(struct ata_command)); 1799 ata_c.r_command = SET_FEATURES; 1800 ata_c.r_st_bmask = 0; 1801 ata_c.r_st_pmask = 0; 1802 ata_c.timeout = 30000; /* 30s timeout */ 1803 ata_c.flags = AT_WAIT; 1804 if (bits & DKCACHE_WRITE) 1805 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1806 else 1807 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1808 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1809 aprint_error_dev(wd->sc_dev, 1810 "wd_setcache command not complete\n"); 1811 return EIO; 1812 } 1813 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1814 char sbuf[sizeof(at_errbits) + 64]; 1815 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1816 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1817 return EIO; 1818 } 1819 return 0; 1820 } 1821 1822 static int 1823 wd_standby(struct wd_softc *wd, int flags) 1824 { 1825 struct ata_command ata_c; 1826 1827 memset(&ata_c, 0, sizeof(struct ata_command)); 1828 ata_c.r_command = WDCC_STANDBY_IMMED; 1829 ata_c.r_st_bmask = WDCS_DRDY; 1830 ata_c.r_st_pmask = WDCS_DRDY; 1831 ata_c.flags = flags; 1832 ata_c.timeout = 30000; /* 30s timeout */ 1833 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1834 aprint_error_dev(wd->sc_dev, 1835 "standby immediate command didn't complete\n"); 1836 return EIO; 1837 } 1838 if (ata_c.flags & AT_ERROR) { 1839 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1840 return ENODEV; 1841 } 1842 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1843 char sbuf[sizeof(at_errbits) + 64]; 1844 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1845 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1846 return EIO; 1847 } 1848 return 0; 1849 } 1850 1851 int 1852 wd_flushcache(struct wd_softc *wd, int flags) 1853 { 1854 struct ata_command ata_c; 1855 1856 /* 1857 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1858 * only ATA-2 and still support it. 1859 */ 1860 if (wd->drvp->ata_vers < 4 && 1861 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1862 wd->sc_params.atap_cmd_set2 == 0xffff)) 1863 return ENODEV; 1864 memset(&ata_c, 0, sizeof(struct ata_command)); 1865 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1866 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1867 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1868 else 1869 ata_c.r_command = WDCC_FLUSHCACHE; 1870 ata_c.r_st_bmask = WDCS_DRDY; 1871 ata_c.r_st_pmask = WDCS_DRDY; 1872 ata_c.flags = flags; 1873 ata_c.timeout = 30000; /* 30s timeout */ 1874 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1875 aprint_error_dev(wd->sc_dev, 1876 "flush cache command didn't complete\n"); 1877 return EIO; 1878 } 1879 if (ata_c.flags & AT_ERROR) { 1880 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1881 return ENODEV; 1882 } 1883 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1884 char sbuf[sizeof(at_errbits) + 64]; 1885 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1886 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1887 sbuf); 1888 return EIO; 1889 } 1890 return 0; 1891 } 1892 1893 bool 1894 wd_shutdown(device_t dev, int how) 1895 { 1896 struct wd_softc *wd = device_private(dev); 1897 1898 /* the adapter needs to be enabled */ 1899 if (wd->atabus->ata_addref(wd->drvp)) 1900 return true; /* no need to complain */ 1901 1902 wd_flushcache(wd, AT_POLL); 1903 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1904 wd_standby(wd, AT_POLL); 1905 return true; 1906 } 1907 1908 /* 1909 * Allocate space for a ioctl queue structure. Mostly taken from 1910 * scsipi_ioctl.c 1911 */ 1912 struct wd_ioctl * 1913 wi_get(void) 1914 { 1915 struct wd_ioctl *wi; 1916 int s; 1917 1918 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1919 buf_init(&wi->wi_bp); 1920 s = splbio(); 1921 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1922 splx(s); 1923 return (wi); 1924 } 1925 1926 /* 1927 * Free an ioctl structure and remove it from our list 1928 */ 1929 1930 void 1931 wi_free(struct wd_ioctl *wi) 1932 { 1933 int s; 1934 1935 s = splbio(); 1936 LIST_REMOVE(wi, wi_list); 1937 splx(s); 1938 buf_destroy(&wi->wi_bp); 1939 free(wi, M_TEMP); 1940 } 1941 1942 /* 1943 * Find a wd_ioctl structure based on the struct buf. 1944 */ 1945 1946 struct wd_ioctl * 1947 wi_find(struct buf *bp) 1948 { 1949 struct wd_ioctl *wi; 1950 int s; 1951 1952 s = splbio(); 1953 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1954 if (bp == &wi->wi_bp) 1955 break; 1956 splx(s); 1957 return (wi); 1958 } 1959 1960 /* 1961 * Ioctl pseudo strategy routine 1962 * 1963 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1964 * happens here is: 1965 * 1966 * - wdioctl() queues a wd_ioctl structure. 1967 * 1968 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1969 * user space I/O is required. If physio() is called, physio() eventually 1970 * calls wdioctlstrategy(). 1971 * 1972 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1973 * to perform the actual command 1974 * 1975 * The reason for the use of the pseudo strategy routine is because 1976 * when doing I/O to/from user space, physio _really_ wants to be in 1977 * the loop. We could put the entire buffer into the ioctl request 1978 * structure, but that won't scale if we want to do things like download 1979 * microcode. 1980 */ 1981 1982 void 1983 wdioctlstrategy(struct buf *bp) 1984 { 1985 struct wd_ioctl *wi; 1986 struct ata_command ata_c; 1987 int error = 0; 1988 1989 wi = wi_find(bp); 1990 if (wi == NULL) { 1991 printf("wdioctlstrategy: " 1992 "No matching ioctl request found in queue\n"); 1993 error = EINVAL; 1994 goto bad; 1995 } 1996 1997 memset(&ata_c, 0, sizeof(ata_c)); 1998 1999 /* 2000 * Abort if physio broke up the transfer 2001 */ 2002 2003 if (bp->b_bcount != wi->wi_atareq.datalen) { 2004 printf("physio split wd ioctl request... cannot proceed\n"); 2005 error = EIO; 2006 goto bad; 2007 } 2008 2009 /* 2010 * Abort if we didn't get a buffer size that was a multiple of 2011 * our sector size (or was larger than NBBY) 2012 */ 2013 2014 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2015 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2016 (1 << NBBY)) { 2017 error = EINVAL; 2018 goto bad; 2019 } 2020 2021 /* 2022 * Make sure a timeout was supplied in the ioctl request 2023 */ 2024 2025 if (wi->wi_atareq.timeout == 0) { 2026 error = EINVAL; 2027 goto bad; 2028 } 2029 2030 if (wi->wi_atareq.flags & ATACMD_READ) 2031 ata_c.flags |= AT_READ; 2032 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2033 ata_c.flags |= AT_WRITE; 2034 2035 if (wi->wi_atareq.flags & ATACMD_READREG) 2036 ata_c.flags |= AT_READREG; 2037 2038 ata_c.flags |= AT_WAIT; 2039 2040 ata_c.timeout = wi->wi_atareq.timeout; 2041 ata_c.r_command = wi->wi_atareq.command; 2042 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2043 ata_c.r_cyl = wi->wi_atareq.cylinder; 2044 ata_c.r_sector = wi->wi_atareq.sec_num; 2045 ata_c.r_count = wi->wi_atareq.sec_count; 2046 ata_c.r_features = wi->wi_atareq.features; 2047 ata_c.r_st_bmask = WDCS_DRDY; 2048 ata_c.r_st_pmask = WDCS_DRDY; 2049 ata_c.data = wi->wi_bp.b_data; 2050 ata_c.bcount = wi->wi_bp.b_bcount; 2051 2052 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2053 != ATACMD_COMPLETE) { 2054 wi->wi_atareq.retsts = ATACMD_ERROR; 2055 goto bad; 2056 } 2057 2058 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2059 if (ata_c.flags & AT_ERROR) { 2060 wi->wi_atareq.retsts = ATACMD_ERROR; 2061 wi->wi_atareq.error = ata_c.r_error; 2062 } else if (ata_c.flags & AT_DF) 2063 wi->wi_atareq.retsts = ATACMD_DF; 2064 else 2065 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2066 } else { 2067 wi->wi_atareq.retsts = ATACMD_OK; 2068 if (wi->wi_atareq.flags & ATACMD_READREG) { 2069 wi->wi_atareq.head = ata_c.r_head ; 2070 wi->wi_atareq.cylinder = ata_c.r_cyl; 2071 wi->wi_atareq.sec_num = ata_c.r_sector; 2072 wi->wi_atareq.sec_count = ata_c.r_count; 2073 wi->wi_atareq.features = ata_c.r_features; 2074 wi->wi_atareq.error = ata_c.r_error; 2075 } 2076 } 2077 2078 bp->b_error = 0; 2079 biodone(bp); 2080 return; 2081 bad: 2082 bp->b_error = error; 2083 biodone(bp); 2084 } 2085
Indexes created Tue Sep 30 20:09:53 GMT 2025