wd.c revision 1.389
1 /* $NetBSD: wd.c,v 1.389 2011/10/27 13:07:37 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 1.389 2011/10/27 13:07:37 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 globing 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 * The ST360015AS has not yet been confirmed to have this 221 * issue, however, it is the only other drive in the 222 * Seagate Barracuda Serial ATA V family. 223 * 224 */ 225 { "ST3120023AS", 226 WD_QUIRK_SPLIT_MOD15_WRITE }, 227 { "ST380023AS", 228 WD_QUIRK_SPLIT_MOD15_WRITE }, 229 { "ST360015AS", 230 WD_QUIRK_SPLIT_MOD15_WRITE }, 231 { NULL, 232 0 } 233 }; 234 235 static const struct wd_quirk * 236 wd_lookup_quirks(const char *name) 237 { 238 const struct wd_quirk *wdq; 239 const char *estr; 240 241 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 242 /* 243 * We only want exact matches (which include matches 244 * against globbing characters). 245 */ 246 if (pmatch(name, wdq->wdq_match, &estr) == 2) 247 return (wdq); 248 } 249 return (NULL); 250 } 251 252 int 253 wdprobe(device_t parent, cfdata_t match, void *aux) 254 { 255 struct ata_device *adev = aux; 256 257 if (adev == NULL) 258 return 0; 259 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 260 return 0; 261 262 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 263 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 264 return 0; 265 return 1; 266 } 267 268 void 269 wdattach(device_t parent, device_t self, void *aux) 270 { 271 struct wd_softc *wd = device_private(self); 272 struct ata_device *adev= aux; 273 int i, blank; 274 char tbuf[41], pbuf[9], c, *p, *q; 275 const struct wd_quirk *wdq; 276 277 wd->sc_dev = self; 278 279 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 280 callout_init(&wd->sc_restart_ch, 0); 281 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 282 #ifdef WD_SOFTBADSECT 283 SLIST_INIT(&wd->sc_bslist); 284 #endif 285 wd->atabus = adev->adev_bustype; 286 wd->openings = adev->adev_openings; 287 wd->drvp = adev->adev_drv_data; 288 289 wd->drvp->drv_done = wddone; 290 wd->drvp->drv_softc = wd->sc_dev; 291 292 aprint_naive("\n"); 293 aprint_normal("\n"); 294 295 /* read our drive info */ 296 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 297 aprint_error_dev(self, "IDENTIFY failed\n"); 298 return; 299 } 300 301 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 302 i < sizeof(wd->sc_params.atap_model); i++) { 303 c = *p++; 304 if (c == '\0') 305 break; 306 if (c != ' ') { 307 if (blank) { 308 *q++ = ' '; 309 blank = 0; 310 } 311 *q++ = c; 312 } else 313 blank = 1; 314 } 315 *q++ = '\0'; 316 317 aprint_normal_dev(self, "<%s>\n", tbuf); 318 319 wdq = wd_lookup_quirks(tbuf); 320 if (wdq != NULL) 321 wd->sc_quirks = wdq->wdq_quirks; 322 323 if (wd->sc_quirks != 0) { 324 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 325 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 326 aprint_normal_dev(self, "quirks %s\n", sbuf); 327 } 328 329 if ((wd->sc_params.atap_multi & 0xff) > 1) { 330 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 331 } else { 332 wd->sc_multi = 1; 333 } 334 335 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 336 wd->sc_multi); 337 338 /* 48-bit LBA addressing */ 339 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 340 wd->sc_flags |= WDF_LBA48; 341 342 /* Prior to ATA-4, LBA was optional. */ 343 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 344 wd->sc_flags |= WDF_LBA; 345 #if 0 346 /* ATA-4 requires LBA. */ 347 if (wd->sc_params.atap_ataversion != 0xffff && 348 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 349 wd->sc_flags |= WDF_LBA; 350 #endif 351 352 if ((wd->sc_flags & WDF_LBA48) != 0) { 353 aprint_verbose(" LBA48 addressing\n"); 354 wd->sc_capacity = 355 ((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) | 356 ((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) | 357 ((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) | 358 ((u_int64_t) wd->sc_params.atap_max_lba[0] << 0); 359 wd->sc_capacity28 = 360 (wd->sc_params.atap_capacity[1] << 16) | 361 wd->sc_params.atap_capacity[0]; 362 } else if ((wd->sc_flags & WDF_LBA) != 0) { 363 aprint_verbose(" LBA addressing\n"); 364 wd->sc_capacity28 = wd->sc_capacity = 365 (wd->sc_params.atap_capacity[1] << 16) | 366 wd->sc_params.atap_capacity[0]; 367 } else { 368 aprint_verbose(" chs addressing\n"); 369 wd->sc_capacity28 = wd->sc_capacity = 370 wd->sc_params.atap_cylinders * 371 wd->sc_params.atap_heads * 372 wd->sc_params.atap_sectors; 373 } 374 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 375 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 376 "%d bytes/sect x %llu sectors\n", 377 pbuf, 378 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 379 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 380 wd->sc_params.atap_cylinders, 381 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 382 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 383 384 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 385 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 386 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 387 /* 388 * Initialize and attach the disk structure. 389 */ 390 /* we fill in dk_info later */ 391 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 392 disk_attach(&wd->sc_dk); 393 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 394 #if NRND > 0 395 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 396 RND_TYPE_DISK, 0); 397 #endif 398 399 /* Discover wedges on this disk. */ 400 dkwedge_discover(&wd->sc_dk); 401 402 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 403 aprint_error_dev(self, "couldn't establish power handler\n"); 404 } 405 406 static bool 407 wd_suspend(device_t dv, const pmf_qual_t *qual) 408 { 409 struct wd_softc *sc = device_private(dv); 410 411 wd_flushcache(sc, AT_WAIT); 412 wd_standby(sc, AT_WAIT); 413 return true; 414 } 415 416 int 417 wddetach(device_t self, int flags) 418 { 419 struct wd_softc *sc = device_private(self); 420 int bmaj, cmaj, i, mn, rc, s; 421 422 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 423 return rc; 424 425 /* locate the major number */ 426 bmaj = bdevsw_lookup_major(&wd_bdevsw); 427 cmaj = cdevsw_lookup_major(&wd_cdevsw); 428 429 /* Nuke the vnodes for any open instances. */ 430 for (i = 0; i < MAXPARTITIONS; i++) { 431 mn = WDMINOR(device_unit(self), i); 432 vdevgone(bmaj, mn, mn, VBLK); 433 vdevgone(cmaj, mn, mn, VCHR); 434 } 435 436 /* Delete all of our wedges. */ 437 dkwedge_delall(&sc->sc_dk); 438 439 s = splbio(); 440 441 /* Kill off any queued buffers. */ 442 bufq_drain(sc->sc_q); 443 444 bufq_free(sc->sc_q); 445 sc->atabus->ata_killpending(sc->drvp); 446 447 splx(s); 448 449 /* Detach disk. */ 450 disk_detach(&sc->sc_dk); 451 disk_destroy(&sc->sc_dk); 452 453 #ifdef WD_SOFTBADSECT 454 /* Clean out the bad sector list */ 455 while (!SLIST_EMPTY(&sc->sc_bslist)) { 456 void *head = SLIST_FIRST(&sc->sc_bslist); 457 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 458 free(head, M_TEMP); 459 } 460 sc->sc_bscount = 0; 461 #endif 462 463 pmf_device_deregister(self); 464 465 #if NRND > 0 466 /* Unhook the entropy source. */ 467 rnd_detach_source(&sc->rnd_source); 468 #endif 469 470 callout_destroy(&sc->sc_restart_ch); 471 472 sc->drvp->drive_flags = 0; /* no drive any more here */ 473 474 return (0); 475 } 476 477 /* 478 * Read/write routine for a buffer. Validates the arguments and schedules the 479 * transfer. Does not wait for the transfer to complete. 480 */ 481 void 482 wdstrategy(struct buf *bp) 483 { 484 struct wd_softc *wd = 485 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 486 struct disklabel *lp = wd->sc_dk.dk_label; 487 daddr_t blkno; 488 int s; 489 490 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 491 DEBUG_XFERS); 492 493 /* Valid request? */ 494 if (bp->b_blkno < 0 || 495 (bp->b_bcount % lp->d_secsize) != 0 || 496 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 497 bp->b_error = EINVAL; 498 goto done; 499 } 500 501 /* If device invalidated (e.g. media change, door open, 502 * device detachment), then error. 503 */ 504 if ((wd->sc_flags & WDF_LOADED) == 0 || 505 !device_is_enabled(wd->sc_dev)) { 506 bp->b_error = EIO; 507 goto done; 508 } 509 510 /* If it's a null transfer, return immediately. */ 511 if (bp->b_bcount == 0) 512 goto done; 513 514 /* 515 * Do bounds checking, adjust transfer. if error, process. 516 * If end of partition, just return. 517 */ 518 if (WDPART(bp->b_dev) == RAW_PART) { 519 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 520 wd->sc_capacity) <= 0) 521 goto done; 522 } else { 523 if (bounds_check_with_label(&wd->sc_dk, bp, 524 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 525 goto done; 526 } 527 528 /* 529 * Now convert the block number to absolute and put it in 530 * terms of the device's logical block size. 531 */ 532 if (lp->d_secsize >= DEV_BSIZE) 533 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 534 else 535 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 536 537 if (WDPART(bp->b_dev) != RAW_PART) 538 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 539 540 bp->b_rawblkno = blkno; 541 542 #ifdef WD_SOFTBADSECT 543 /* 544 * If the transfer about to be attempted contains only a block that 545 * is known to be bad then return an error for the transfer without 546 * even attempting to start a transfer up under the premis that we 547 * will just end up doing more retries for a transfer that will end 548 * up failing again. 549 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 550 */ 551 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 552 struct disk_badsectors *dbs; 553 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 554 555 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 556 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 557 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 558 bp->b_error = EIO; 559 goto done; 560 } 561 } 562 #endif 563 564 /* Queue transfer on drive, activate drive and controller if idle. */ 565 s = splbio(); 566 bufq_put(wd->sc_q, bp); 567 wdstart(wd); 568 splx(s); 569 return; 570 done: 571 /* Toss transfer; we're done early. */ 572 bp->b_resid = bp->b_bcount; 573 biodone(bp); 574 } 575 576 /* 577 * Queue a drive for I/O. 578 */ 579 void 580 wdstart(void *arg) 581 { 582 struct wd_softc *wd = arg; 583 struct buf *bp = NULL; 584 585 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 586 DEBUG_XFERS); 587 588 if (!device_is_active(wd->sc_dev)) 589 return; 590 591 while (wd->openings > 0) { 592 593 /* Is there a buf for us ? */ 594 if ((bp = bufq_get(wd->sc_q)) == NULL) 595 return; 596 597 /* 598 * Make the command. First lock the device 599 */ 600 wd->openings--; 601 602 wd->retries = 0; 603 wdstart1(wd, bp); 604 } 605 } 606 607 static void 608 wd_split_mod15_write(struct buf *bp) 609 { 610 struct buf *obp = bp->b_private; 611 struct wd_softc *sc = 612 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 613 int s; 614 615 if (__predict_false(bp->b_error != 0)) { 616 /* 617 * Propagate the error. If this was the first half of 618 * the original transfer, make sure to account for that 619 * in the residual. 620 */ 621 if (bp->b_data == obp->b_data) 622 bp->b_resid += bp->b_bcount; 623 goto done; 624 } 625 626 /* 627 * If this was the second half of the transfer, we're all done! 628 */ 629 if (bp->b_data != obp->b_data) 630 goto done; 631 632 /* 633 * Advance the pointer to the second half and issue that command 634 * using the same opening. 635 */ 636 bp->b_flags = obp->b_flags; 637 bp->b_oflags = obp->b_oflags; 638 bp->b_cflags = obp->b_cflags; 639 bp->b_data = (char *)bp->b_data + bp->b_bcount; 640 bp->b_blkno += (bp->b_bcount / 512); 641 bp->b_rawblkno += (bp->b_bcount / 512); 642 s = splbio(); 643 wdstart1(sc, bp); 644 splx(s); 645 return; 646 647 done: 648 obp->b_error = bp->b_error; 649 obp->b_resid = bp->b_resid; 650 s = splbio(); 651 putiobuf(bp); 652 biodone(obp); 653 sc->openings++; 654 splx(s); 655 /* wddone() will call wdstart() */ 656 } 657 658 void 659 wdstart1(struct wd_softc *wd, struct buf *bp) 660 { 661 662 /* 663 * Deal with the "split mod15 write" quirk. We just divide the 664 * transfer in two, doing the first half and then then second half 665 * with the same command opening. 666 * 667 * Note we MUST do this here, because we can't let insertion 668 * into the bufq cause the transfers to be re-merged. 669 */ 670 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 671 (bp->b_flags & B_READ) == 0 && 672 bp->b_bcount > 512 && 673 ((bp->b_bcount / 512) % 15) == 1)) { 674 struct buf *nbp; 675 676 /* already at splbio */ 677 nbp = getiobuf(NULL, false); 678 if (__predict_false(nbp == NULL)) { 679 /* No memory -- fail the iop. */ 680 bp->b_error = ENOMEM; 681 bp->b_resid = bp->b_bcount; 682 biodone(bp); 683 wd->openings++; 684 return; 685 } 686 687 nbp->b_error = 0; 688 nbp->b_proc = bp->b_proc; 689 nbp->b_dev = bp->b_dev; 690 691 nbp->b_bcount = bp->b_bcount / 2; 692 nbp->b_bufsize = bp->b_bcount / 2; 693 nbp->b_data = bp->b_data; 694 695 nbp->b_blkno = bp->b_blkno; 696 nbp->b_rawblkno = bp->b_rawblkno; 697 698 nbp->b_flags = bp->b_flags; 699 nbp->b_oflags = bp->b_oflags; 700 nbp->b_cflags = bp->b_cflags; 701 nbp->b_iodone = wd_split_mod15_write; 702 703 /* Put ptr to orig buf in b_private and use new buf */ 704 nbp->b_private = bp; 705 706 BIO_COPYPRIO(nbp, bp); 707 708 bp = nbp; 709 } 710 711 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 712 wd->sc_wdc_bio.bcount = bp->b_bcount; 713 wd->sc_wdc_bio.databuf = bp->b_data; 714 wd->sc_wdc_bio.blkdone =0; 715 KASSERT(bp == wd->sc_bp || wd->sc_bp == NULL); 716 wd->sc_bp = bp; 717 /* 718 * If we're retrying, retry in single-sector mode. This will give us 719 * the sector number of the problem, and will eventually allow the 720 * transfer to succeed. 721 */ 722 if (wd->retries >= WDIORETRIES_SINGLE) 723 wd->sc_wdc_bio.flags = ATA_SINGLE; 724 else 725 wd->sc_wdc_bio.flags = 0; 726 if (wd->sc_flags & WDF_LBA48 && 727 (wd->sc_wdc_bio.blkno + 728 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 729 wd->sc_capacity28) 730 wd->sc_wdc_bio.flags |= ATA_LBA48; 731 if (wd->sc_flags & WDF_LBA) 732 wd->sc_wdc_bio.flags |= ATA_LBA; 733 if (bp->b_flags & B_READ) 734 wd->sc_wdc_bio.flags |= ATA_READ; 735 /* Instrumentation. */ 736 disk_busy(&wd->sc_dk); 737 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 738 case ATACMD_TRY_AGAIN: 739 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 740 break; 741 case ATACMD_QUEUED: 742 case ATACMD_COMPLETE: 743 break; 744 default: 745 panic("wdstart1: bad return code from ata_bio()"); 746 } 747 } 748 749 void 750 wddone(void *v) 751 { 752 struct wd_softc *wd = device_private(v); 753 struct buf *bp = wd->sc_bp; 754 const char *errmsg; 755 int do_perror = 0; 756 757 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 758 DEBUG_XFERS); 759 if (bp == NULL) 760 return; 761 bp->b_resid = wd->sc_wdc_bio.bcount; 762 switch (wd->sc_wdc_bio.error) { 763 case ERR_DMA: 764 errmsg = "DMA error"; 765 goto retry; 766 case ERR_DF: 767 errmsg = "device fault"; 768 goto retry; 769 case TIMEOUT: 770 errmsg = "device timeout"; 771 goto retry; 772 case ERR_RESET: 773 errmsg = "channel reset"; 774 goto retry2; 775 case ERROR: 776 /* Don't care about media change bits */ 777 if (wd->sc_wdc_bio.r_error != 0 && 778 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 779 goto noerror; 780 errmsg = "error"; 781 do_perror = 1; 782 retry: /* Just reset and retry. Can we do more ? */ 783 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 784 retry2: 785 diskerr(bp, "wd", errmsg, LOG_PRINTF, 786 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 787 if (wd->retries < WDIORETRIES) 788 printf(", retrying"); 789 printf("\n"); 790 if (do_perror) 791 wdperror(wd); 792 if (wd->retries < WDIORETRIES) { 793 wd->retries++; 794 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 795 wdrestart, wd); 796 return; 797 } 798 799 #ifdef WD_SOFTBADSECT 800 /* 801 * Not all errors indicate a failed block but those that do, 802 * put the block on the bad-block list for the device. Only 803 * do this for reads because the drive should do it for writes, 804 * itself, according to Manuel. 805 */ 806 if ((bp->b_flags & B_READ) && 807 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 808 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 809 struct disk_badsectors *dbs; 810 811 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 812 dbs->dbs_min = bp->b_rawblkno; 813 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 814 microtime(&dbs->dbs_failedat); 815 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 816 wd->sc_bscount++; 817 } 818 #endif 819 bp->b_error = EIO; 820 break; 821 case NOERROR: 822 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 823 aprint_error_dev(wd->sc_dev, 824 "soft error (corrected)\n"); 825 break; 826 case ERR_NODEV: 827 bp->b_error = EIO; 828 break; 829 } 830 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 831 (bp->b_flags & B_READ)); 832 #if NRND > 0 833 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 834 #endif 835 /* XXX Yuck, but we don't want to increment openings in this case */ 836 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 837 biodone(bp); 838 else { 839 biodone(bp); 840 wd->openings++; 841 } 842 KASSERT(wd->sc_bp != NULL); 843 wd->sc_bp = NULL; 844 wdstart(wd); 845 } 846 847 void 848 wdrestart(void *v) 849 { 850 struct wd_softc *wd = v; 851 struct buf *bp = wd->sc_bp; 852 int s; 853 854 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 855 DEBUG_XFERS); 856 s = splbio(); 857 wdstart1(v, bp); 858 splx(s); 859 } 860 861 static void 862 wdminphys(struct buf *bp) 863 { 864 865 if (bp->b_bcount > (512 * 128)) { 866 bp->b_bcount = (512 * 128); 867 } 868 minphys(bp); 869 } 870 871 int 872 wdread(dev_t dev, struct uio *uio, int flags) 873 { 874 875 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 876 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 877 } 878 879 int 880 wdwrite(dev_t dev, struct uio *uio, int flags) 881 { 882 883 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 884 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 885 } 886 887 int 888 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 889 { 890 struct wd_softc *wd; 891 int part, error; 892 893 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 894 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 895 if (wd == NULL) 896 return (ENXIO); 897 898 if (! device_is_active(wd->sc_dev)) 899 return (ENODEV); 900 901 part = WDPART(dev); 902 903 mutex_enter(&wd->sc_dk.dk_openlock); 904 905 /* 906 * If there are wedges, and this is not RAW_PART, then we 907 * need to fail. 908 */ 909 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 910 error = EBUSY; 911 goto bad1; 912 } 913 914 /* 915 * If this is the first open of this device, add a reference 916 * to the adapter. 917 */ 918 if (wd->sc_dk.dk_openmask == 0 && 919 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 920 goto bad1; 921 922 if (wd->sc_dk.dk_openmask != 0) { 923 /* 924 * If any partition is open, but the disk has been invalidated, 925 * disallow further opens. 926 */ 927 if ((wd->sc_flags & WDF_LOADED) == 0) { 928 error = EIO; 929 goto bad2; 930 } 931 } else { 932 if ((wd->sc_flags & WDF_LOADED) == 0) { 933 wd->sc_flags |= WDF_LOADED; 934 935 /* Load the physical device parameters. */ 936 wd_get_params(wd, AT_WAIT, &wd->sc_params); 937 938 /* Load the partition info if not already loaded. */ 939 wdgetdisklabel(wd); 940 } 941 } 942 943 /* Check that the partition exists. */ 944 if (part != RAW_PART && 945 (part >= wd->sc_dk.dk_label->d_npartitions || 946 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 947 error = ENXIO; 948 goto bad2; 949 } 950 951 /* Insure only one open at a time. */ 952 switch (fmt) { 953 case S_IFCHR: 954 wd->sc_dk.dk_copenmask |= (1 << part); 955 break; 956 case S_IFBLK: 957 wd->sc_dk.dk_bopenmask |= (1 << part); 958 break; 959 } 960 wd->sc_dk.dk_openmask = 961 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 962 963 mutex_exit(&wd->sc_dk.dk_openlock); 964 return 0; 965 966 bad2: 967 if (wd->sc_dk.dk_openmask == 0) 968 wd->atabus->ata_delref(wd->drvp); 969 bad1: 970 mutex_exit(&wd->sc_dk.dk_openlock); 971 return error; 972 } 973 974 /* 975 * Caller must hold wd->sc_dk.dk_openlock. 976 */ 977 static int 978 wdlastclose(device_t self) 979 { 980 struct wd_softc *wd = device_private(self); 981 982 wd_flushcache(wd, AT_WAIT); 983 984 if (! (wd->sc_flags & WDF_KLABEL)) 985 wd->sc_flags &= ~WDF_LOADED; 986 987 wd->atabus->ata_delref(wd->drvp); 988 989 return 0; 990 } 991 992 int 993 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 994 { 995 struct wd_softc *wd = 996 device_lookup_private(&wd_cd, WDUNIT(dev)); 997 int part = WDPART(dev); 998 999 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1000 1001 mutex_enter(&wd->sc_dk.dk_openlock); 1002 1003 switch (fmt) { 1004 case S_IFCHR: 1005 wd->sc_dk.dk_copenmask &= ~(1 << part); 1006 break; 1007 case S_IFBLK: 1008 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1009 break; 1010 } 1011 wd->sc_dk.dk_openmask = 1012 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1013 1014 if (wd->sc_dk.dk_openmask == 0) 1015 wdlastclose(wd->sc_dev); 1016 1017 mutex_exit(&wd->sc_dk.dk_openlock); 1018 return 0; 1019 } 1020 1021 void 1022 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1023 { 1024 1025 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1026 memset(lp, 0, sizeof(struct disklabel)); 1027 1028 lp->d_secsize = DEV_BSIZE; 1029 lp->d_ntracks = wd->sc_params.atap_heads; 1030 lp->d_nsectors = wd->sc_params.atap_sectors; 1031 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1032 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1033 wd->sc_params.atap_cylinders; 1034 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1035 1036 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1037 lp->d_type = DTYPE_ST506; 1038 else 1039 lp->d_type = DTYPE_ESDI; 1040 1041 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1042 strncpy(lp->d_packname, "fictitious", 16); 1043 if (wd->sc_capacity > UINT32_MAX) 1044 lp->d_secperunit = UINT32_MAX; 1045 else 1046 lp->d_secperunit = wd->sc_capacity; 1047 lp->d_rpm = 3600; 1048 lp->d_interleave = 1; 1049 lp->d_flags = 0; 1050 1051 lp->d_partitions[RAW_PART].p_offset = 0; 1052 lp->d_partitions[RAW_PART].p_size = 1053 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1054 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1055 lp->d_npartitions = RAW_PART + 1; 1056 1057 lp->d_magic = DISKMAGIC; 1058 lp->d_magic2 = DISKMAGIC; 1059 lp->d_checksum = dkcksum(lp); 1060 } 1061 1062 /* 1063 * Fabricate a default disk label, and try to read the correct one. 1064 */ 1065 void 1066 wdgetdisklabel(struct wd_softc *wd) 1067 { 1068 struct disklabel *lp = wd->sc_dk.dk_label; 1069 const char *errstring; 1070 int s; 1071 1072 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1073 1074 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1075 1076 wdgetdefaultlabel(wd, lp); 1077 1078 wd->sc_badsect[0] = -1; 1079 1080 if (wd->drvp->state > RESET) { 1081 s = splbio(); 1082 wd->drvp->drive_flags |= DRIVE_RESET; 1083 splx(s); 1084 } 1085 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1086 RAW_PART), wdstrategy, lp, 1087 wd->sc_dk.dk_cpulabel); 1088 if (errstring) { 1089 /* 1090 * This probably happened because the drive's default 1091 * geometry doesn't match the DOS geometry. We 1092 * assume the DOS geometry is now in the label and try 1093 * again. XXX This is a kluge. 1094 */ 1095 if (wd->drvp->state > RESET) { 1096 s = splbio(); 1097 wd->drvp->drive_flags |= DRIVE_RESET; 1098 splx(s); 1099 } 1100 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1101 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1102 } 1103 if (errstring) { 1104 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1105 return; 1106 } 1107 1108 if (wd->drvp->state > RESET) { 1109 s = splbio(); 1110 wd->drvp->drive_flags |= DRIVE_RESET; 1111 splx(s); 1112 } 1113 #ifdef HAS_BAD144_HANDLING 1114 if ((lp->d_flags & D_BADSECT) != 0) 1115 bad144intern(wd); 1116 #endif 1117 } 1118 1119 void 1120 wdperror(const struct wd_softc *wd) 1121 { 1122 static const char *const errstr0_3[] = {"address mark not found", 1123 "track 0 not found", "aborted command", "media change requested", 1124 "id not found", "media changed", "uncorrectable data error", 1125 "bad block detected"}; 1126 static const char *const errstr4_5[] = { 1127 "obsolete (address mark not found)", 1128 "no media/write protected", "aborted command", 1129 "media change requested", "id not found", "media changed", 1130 "uncorrectable data error", "interface CRC error"}; 1131 const char *const *errstr; 1132 int i; 1133 const char *sep = ""; 1134 1135 const char *devname = device_xname(wd->sc_dev); 1136 struct ata_drive_datas *drvp = wd->drvp; 1137 int errno = wd->sc_wdc_bio.r_error; 1138 1139 if (drvp->ata_vers >= 4) 1140 errstr = errstr4_5; 1141 else 1142 errstr = errstr0_3; 1143 1144 printf("%s: (", devname); 1145 1146 if (errno == 0) 1147 printf("error not notified"); 1148 1149 for (i = 0; i < 8; i++) { 1150 if (errno & (1 << i)) { 1151 printf("%s%s", sep, errstr[i]); 1152 sep = ", "; 1153 } 1154 } 1155 printf(")\n"); 1156 } 1157 1158 int 1159 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1160 { 1161 struct wd_softc *wd = 1162 device_lookup_private(&wd_cd, WDUNIT(dev)); 1163 int error = 0, s; 1164 #ifdef __HAVE_OLD_DISKLABEL 1165 struct disklabel *newlabel = NULL; 1166 #endif 1167 1168 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1169 1170 if ((wd->sc_flags & WDF_LOADED) == 0) 1171 return EIO; 1172 1173 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1174 if (error != EPASSTHROUGH) 1175 return (error); 1176 1177 switch (xfer) { 1178 #ifdef HAS_BAD144_HANDLING 1179 case DIOCSBAD: 1180 if ((flag & FWRITE) == 0) 1181 return EBADF; 1182 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1183 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1184 bad144intern(wd); 1185 return 0; 1186 #endif 1187 #ifdef WD_SOFTBADSECT 1188 case DIOCBSLIST : 1189 { 1190 u_int32_t count, missing, skip; 1191 struct disk_badsecinfo dbsi; 1192 struct disk_badsectors *dbs; 1193 size_t available; 1194 uint8_t *laddr; 1195 1196 dbsi = *(struct disk_badsecinfo *)addr; 1197 missing = wd->sc_bscount; 1198 count = 0; 1199 available = dbsi.dbsi_bufsize; 1200 skip = dbsi.dbsi_skip; 1201 laddr = (uint8_t *)dbsi.dbsi_buffer; 1202 1203 /* 1204 * We start this loop with the expectation that all of the 1205 * entries will be missed and decrement this counter each 1206 * time we either skip over one (already copied out) or 1207 * we actually copy it back to user space. The structs 1208 * holding the bad sector information are copied directly 1209 * back to user space whilst the summary is returned via 1210 * the struct passed in via the ioctl. 1211 */ 1212 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1213 if (skip > 0) { 1214 missing--; 1215 skip--; 1216 continue; 1217 } 1218 if (available < sizeof(*dbs)) 1219 break; 1220 available -= sizeof(*dbs); 1221 copyout(dbs, laddr, sizeof(*dbs)); 1222 laddr += sizeof(*dbs); 1223 missing--; 1224 count++; 1225 } 1226 dbsi.dbsi_left = missing; 1227 dbsi.dbsi_copied = count; 1228 *(struct disk_badsecinfo *)addr = dbsi; 1229 return 0; 1230 } 1231 1232 case DIOCBSFLUSH : 1233 /* Clean out the bad sector list */ 1234 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1235 void *head = SLIST_FIRST(&wd->sc_bslist); 1236 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1237 free(head, M_TEMP); 1238 } 1239 wd->sc_bscount = 0; 1240 return 0; 1241 #endif 1242 case DIOCGDINFO: 1243 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1244 return 0; 1245 #ifdef __HAVE_OLD_DISKLABEL 1246 case ODIOCGDINFO: 1247 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1248 if (newlabel == NULL) 1249 return EIO; 1250 *newlabel = *(wd->sc_dk.dk_label); 1251 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1252 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1253 else 1254 error = ENOTTY; 1255 free(newlabel, M_TEMP); 1256 return error; 1257 #endif 1258 1259 case DIOCGPART: 1260 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1261 ((struct partinfo *)addr)->part = 1262 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1263 return 0; 1264 1265 case DIOCWDINFO: 1266 case DIOCSDINFO: 1267 #ifdef __HAVE_OLD_DISKLABEL 1268 case ODIOCWDINFO: 1269 case ODIOCSDINFO: 1270 #endif 1271 { 1272 struct disklabel *lp; 1273 1274 if ((flag & FWRITE) == 0) 1275 return EBADF; 1276 1277 #ifdef __HAVE_OLD_DISKLABEL 1278 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1279 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1280 if (newlabel == NULL) 1281 return EIO; 1282 memset(newlabel, 0, sizeof newlabel); 1283 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1284 lp = newlabel; 1285 } else 1286 #endif 1287 lp = (struct disklabel *)addr; 1288 1289 mutex_enter(&wd->sc_dk.dk_openlock); 1290 wd->sc_flags |= WDF_LABELLING; 1291 1292 error = setdisklabel(wd->sc_dk.dk_label, 1293 lp, /*wd->sc_dk.dk_openmask : */0, 1294 wd->sc_dk.dk_cpulabel); 1295 if (error == 0) { 1296 if (wd->drvp->state > RESET) { 1297 s = splbio(); 1298 wd->drvp->drive_flags |= DRIVE_RESET; 1299 splx(s); 1300 } 1301 if (xfer == DIOCWDINFO 1302 #ifdef __HAVE_OLD_DISKLABEL 1303 || xfer == ODIOCWDINFO 1304 #endif 1305 ) 1306 error = writedisklabel(WDLABELDEV(dev), 1307 wdstrategy, wd->sc_dk.dk_label, 1308 wd->sc_dk.dk_cpulabel); 1309 } 1310 1311 wd->sc_flags &= ~WDF_LABELLING; 1312 mutex_exit(&wd->sc_dk.dk_openlock); 1313 #ifdef __HAVE_OLD_DISKLABEL 1314 if (newlabel != NULL) 1315 free(newlabel, M_TEMP); 1316 #endif 1317 return error; 1318 } 1319 1320 case DIOCKLABEL: 1321 if (*(int *)addr) 1322 wd->sc_flags |= WDF_KLABEL; 1323 else 1324 wd->sc_flags &= ~WDF_KLABEL; 1325 return 0; 1326 1327 case DIOCWLABEL: 1328 if ((flag & FWRITE) == 0) 1329 return EBADF; 1330 if (*(int *)addr) 1331 wd->sc_flags |= WDF_WLABEL; 1332 else 1333 wd->sc_flags &= ~WDF_WLABEL; 1334 return 0; 1335 1336 case DIOCGDEFLABEL: 1337 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1338 return 0; 1339 #ifdef __HAVE_OLD_DISKLABEL 1340 case ODIOCGDEFLABEL: 1341 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1342 if (newlabel == NULL) 1343 return EIO; 1344 wdgetdefaultlabel(wd, newlabel); 1345 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1346 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1347 else 1348 error = ENOTTY; 1349 free(newlabel, M_TEMP); 1350 return error; 1351 #endif 1352 1353 #ifdef notyet 1354 case DIOCWFORMAT: 1355 if ((flag & FWRITE) == 0) 1356 return EBADF; 1357 { 1358 register struct format_op *fop; 1359 struct iovec aiov; 1360 struct uio auio; 1361 1362 fop = (struct format_op *)addr; 1363 aiov.iov_base = fop->df_buf; 1364 aiov.iov_len = fop->df_count; 1365 auio.uio_iov = &aiov; 1366 auio.uio_iovcnt = 1; 1367 auio.uio_resid = fop->df_count; 1368 auio.uio_offset = 1369 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1370 auio.uio_vmspace = l->l_proc->p_vmspace; 1371 error = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1372 &auio); 1373 fop->df_count -= auio.uio_resid; 1374 fop->df_reg[0] = wdc->sc_status; 1375 fop->df_reg[1] = wdc->sc_error; 1376 return error; 1377 } 1378 #endif 1379 case DIOCGCACHE: 1380 return wd_getcache(wd, (int *)addr); 1381 1382 case DIOCSCACHE: 1383 return wd_setcache(wd, *(int *)addr); 1384 1385 case DIOCCACHESYNC: 1386 return wd_flushcache(wd, AT_WAIT); 1387 1388 case ATAIOCCOMMAND: 1389 /* 1390 * Make sure this command is (relatively) safe first 1391 */ 1392 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1393 (flag & FWRITE) == 0) 1394 return (EBADF); 1395 { 1396 struct wd_ioctl *wi; 1397 atareq_t *atareq = (atareq_t *) addr; 1398 int error1; 1399 1400 wi = wi_get(); 1401 wi->wi_softc = wd; 1402 wi->wi_atareq = *atareq; 1403 1404 if (atareq->datalen && atareq->flags & 1405 (ATACMD_READ | ATACMD_WRITE)) { 1406 void *tbuf; 1407 if (atareq->datalen < DEV_BSIZE 1408 && atareq->command == WDCC_IDENTIFY) { 1409 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1410 wi->wi_iov.iov_base = tbuf; 1411 wi->wi_iov.iov_len = DEV_BSIZE; 1412 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1413 } else { 1414 tbuf = NULL; 1415 wi->wi_iov.iov_base = atareq->databuf; 1416 wi->wi_iov.iov_len = atareq->datalen; 1417 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1418 } 1419 wi->wi_uio.uio_iov = &wi->wi_iov; 1420 wi->wi_uio.uio_iovcnt = 1; 1421 wi->wi_uio.uio_resid = atareq->datalen; 1422 wi->wi_uio.uio_offset = 0; 1423 wi->wi_uio.uio_rw = 1424 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1425 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1426 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1427 wdminphys, &wi->wi_uio); 1428 if (tbuf != NULL && error1 == 0) { 1429 error1 = copyout(tbuf, atareq->databuf, 1430 atareq->datalen); 1431 free(tbuf, M_TEMP); 1432 } 1433 } else { 1434 /* No need to call physio if we don't have any 1435 user data */ 1436 wi->wi_bp.b_flags = 0; 1437 wi->wi_bp.b_data = 0; 1438 wi->wi_bp.b_bcount = 0; 1439 wi->wi_bp.b_dev = 0; 1440 wi->wi_bp.b_proc = l->l_proc; 1441 wdioctlstrategy(&wi->wi_bp); 1442 error1 = wi->wi_bp.b_error; 1443 } 1444 *atareq = wi->wi_atareq; 1445 wi_free(wi); 1446 return(error1); 1447 } 1448 1449 case DIOCAWEDGE: 1450 { 1451 struct dkwedge_info *dkw = (void *) addr; 1452 1453 if ((flag & FWRITE) == 0) 1454 return (EBADF); 1455 1456 /* If the ioctl happens here, the parent is us. */ 1457 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1458 return (dkwedge_add(dkw)); 1459 } 1460 1461 case DIOCDWEDGE: 1462 { 1463 struct dkwedge_info *dkw = (void *) addr; 1464 1465 if ((flag & FWRITE) == 0) 1466 return (EBADF); 1467 1468 /* If the ioctl happens here, the parent is us. */ 1469 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1470 return (dkwedge_del(dkw)); 1471 } 1472 1473 case DIOCLWEDGES: 1474 { 1475 struct dkwedge_list *dkwl = (void *) addr; 1476 1477 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1478 } 1479 1480 case DIOCGSTRATEGY: 1481 { 1482 struct disk_strategy *dks = (void *)addr; 1483 1484 s = splbio(); 1485 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1486 sizeof(dks->dks_name)); 1487 splx(s); 1488 dks->dks_paramlen = 0; 1489 1490 return 0; 1491 } 1492 1493 case DIOCSSTRATEGY: 1494 { 1495 struct disk_strategy *dks = (void *)addr; 1496 struct bufq_state *new; 1497 struct bufq_state *old; 1498 1499 if ((flag & FWRITE) == 0) { 1500 return EBADF; 1501 } 1502 if (dks->dks_param != NULL) { 1503 return EINVAL; 1504 } 1505 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1506 error = bufq_alloc(&new, dks->dks_name, 1507 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1508 if (error) { 1509 return error; 1510 } 1511 s = splbio(); 1512 old = wd->sc_q; 1513 bufq_move(new, old); 1514 wd->sc_q = new; 1515 splx(s); 1516 bufq_free(old); 1517 1518 return 0; 1519 } 1520 1521 default: 1522 return ENOTTY; 1523 } 1524 1525 #ifdef DIAGNOSTIC 1526 panic("wdioctl: impossible"); 1527 #endif 1528 } 1529 1530 #ifdef B_FORMAT 1531 int 1532 wdformat(struct buf *bp) 1533 { 1534 1535 bp->b_flags |= B_FORMAT; 1536 return wdstrategy(bp); 1537 } 1538 #endif 1539 1540 int 1541 wdsize(dev_t dev) 1542 { 1543 struct wd_softc *wd; 1544 int part, omask; 1545 int size; 1546 1547 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1548 1549 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1550 if (wd == NULL) 1551 return (-1); 1552 1553 part = WDPART(dev); 1554 omask = wd->sc_dk.dk_openmask & (1 << part); 1555 1556 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1557 return (-1); 1558 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1559 size = -1; 1560 else 1561 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1562 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1563 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1564 return (-1); 1565 return (size); 1566 } 1567 1568 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1569 static int wddoingadump = 0; 1570 static int wddumprecalibrated = 0; 1571 1572 /* 1573 * Dump core after a system crash. 1574 */ 1575 int 1576 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1577 { 1578 struct wd_softc *wd; /* disk unit to do the I/O */ 1579 struct disklabel *lp; /* disk's disklabel */ 1580 int part, err; 1581 int nblks; /* total number of sectors left to write */ 1582 1583 /* Check if recursive dump; if so, punt. */ 1584 if (wddoingadump) 1585 return EFAULT; 1586 wddoingadump = 1; 1587 1588 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1589 if (wd == NULL) 1590 return (ENXIO); 1591 1592 part = WDPART(dev); 1593 1594 /* Convert to disk sectors. Request must be a multiple of size. */ 1595 lp = wd->sc_dk.dk_label; 1596 if ((size % lp->d_secsize) != 0) 1597 return EFAULT; 1598 nblks = size / lp->d_secsize; 1599 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1600 1601 /* Check transfer bounds against partition size. */ 1602 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1603 return EINVAL; 1604 1605 /* Offset block number to start of partition. */ 1606 blkno += lp->d_partitions[part].p_offset; 1607 1608 /* Recalibrate, if first dump transfer. */ 1609 if (wddumprecalibrated == 0) { 1610 wddumprecalibrated = 1; 1611 (*wd->atabus->ata_reset_drive)(wd->drvp, 1612 AT_POLL | AT_RST_EMERG); 1613 wd->drvp->state = RESET; 1614 } 1615 1616 wd->sc_bp = NULL; 1617 wd->sc_wdc_bio.blkno = blkno; 1618 wd->sc_wdc_bio.flags = ATA_POLL; 1619 if (wd->sc_flags & WDF_LBA48 && 1620 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1621 wd->sc_wdc_bio.flags |= ATA_LBA48; 1622 if (wd->sc_flags & WDF_LBA) 1623 wd->sc_wdc_bio.flags |= ATA_LBA; 1624 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1625 wd->sc_wdc_bio.databuf = va; 1626 #ifndef WD_DUMP_NOT_TRUSTED 1627 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1628 case ATACMD_TRY_AGAIN: 1629 panic("wddump: try again"); 1630 break; 1631 case ATACMD_QUEUED: 1632 panic("wddump: polled command has been queued"); 1633 break; 1634 case ATACMD_COMPLETE: 1635 break; 1636 default: 1637 panic("wddump: unknown atacmd code %d", err); 1638 } 1639 switch(err = wd->sc_wdc_bio.error) { 1640 case TIMEOUT: 1641 printf("wddump: device timed out"); 1642 err = EIO; 1643 break; 1644 case ERR_DF: 1645 printf("wddump: drive fault"); 1646 err = EIO; 1647 break; 1648 case ERR_DMA: 1649 printf("wddump: DMA error"); 1650 err = EIO; 1651 break; 1652 case ERROR: 1653 printf("wddump: "); 1654 wdperror(wd); 1655 err = EIO; 1656 break; 1657 case NOERROR: 1658 err = 0; 1659 break; 1660 default: 1661 panic("wddump: unknown error type %d", err); 1662 } 1663 if (err != 0) { 1664 printf("\n"); 1665 return err; 1666 } 1667 #else /* WD_DUMP_NOT_TRUSTED */ 1668 /* Let's just talk about this first... */ 1669 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1670 unit, va, cylin, head, sector); 1671 delay(500 * 1000); /* half a second */ 1672 #endif 1673 1674 wddoingadump = 0; 1675 return 0; 1676 } 1677 1678 #ifdef HAS_BAD144_HANDLING 1679 /* 1680 * Internalize the bad sector table. 1681 */ 1682 void 1683 bad144intern(struct wd_softc *wd) 1684 { 1685 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1686 struct disklabel *lp = wd->sc_dk.dk_label; 1687 int i = 0; 1688 1689 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1690 1691 for (; i < NBT_BAD; i++) { 1692 if (bt->bt_bad[i].bt_cyl == 0xffff) 1693 break; 1694 wd->sc_badsect[i] = 1695 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1696 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1697 (bt->bt_bad[i].bt_trksec & 0xff); 1698 } 1699 for (; i < NBT_BAD+1; i++) 1700 wd->sc_badsect[i] = -1; 1701 } 1702 #endif 1703 1704 static void 1705 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1706 { 1707 prop_dictionary_t disk_info, odisk_info, geom; 1708 const char *cp; 1709 1710 disk_info = prop_dictionary_create(); 1711 1712 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1713 cp = "ST506"; 1714 else { 1715 /* XXX Should have a case for ATA here, too. */ 1716 cp = "ESDI"; 1717 } 1718 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1719 1720 geom = prop_dictionary_create(); 1721 1722 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1723 1724 prop_dictionary_set_uint32(geom, "sector-size", 1725 DEV_BSIZE /* XXX 512? */); 1726 1727 prop_dictionary_set_uint16(geom, "sectors-per-track", 1728 wd->sc_params.atap_sectors); 1729 1730 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1731 wd->sc_params.atap_heads); 1732 1733 if (wd->sc_flags & WDF_LBA) 1734 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1735 wd->sc_capacity / 1736 (wd->sc_params.atap_heads * 1737 wd->sc_params.atap_sectors)); 1738 else 1739 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1740 wd->sc_params.atap_cylinders); 1741 1742 prop_dictionary_set(disk_info, "geometry", geom); 1743 prop_object_release(geom); 1744 1745 prop_dictionary_set(device_properties(wd->sc_dev), 1746 "disk-info", disk_info); 1747 1748 /* 1749 * Don't release disk_info here; we keep a reference to it. 1750 * disk_detach() will release it when we go away. 1751 */ 1752 1753 odisk_info = wd->sc_dk.dk_info; 1754 wd->sc_dk.dk_info = disk_info; 1755 if (odisk_info) 1756 prop_object_release(odisk_info); 1757 } 1758 1759 int 1760 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1761 { 1762 1763 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1764 case CMD_AGAIN: 1765 return 1; 1766 case CMD_ERR: 1767 /* 1768 * We `know' there's a drive here; just assume it's old. 1769 * This geometry is only used to read the MBR and print a 1770 * (false) attach message. 1771 */ 1772 strncpy(params->atap_model, "ST506", 1773 sizeof params->atap_model); 1774 params->atap_config = ATA_CFG_FIXED; 1775 params->atap_cylinders = 1024; 1776 params->atap_heads = 8; 1777 params->atap_sectors = 17; 1778 params->atap_multi = 1; 1779 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1780 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1781 /* FALLTHROUGH */ 1782 case CMD_OK: 1783 wd_params_to_properties(wd, params); 1784 return 0; 1785 default: 1786 panic("wd_get_params: bad return code from ata_get_params"); 1787 /* NOTREACHED */ 1788 } 1789 } 1790 1791 int 1792 wd_getcache(struct wd_softc *wd, int *bitsp) 1793 { 1794 struct ataparams params; 1795 1796 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1797 return EIO; 1798 if (params.atap_cmd_set1 == 0x0000 || 1799 params.atap_cmd_set1 == 0xffff || 1800 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1801 *bitsp = 0; 1802 return 0; 1803 } 1804 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1805 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1806 *bitsp |= DKCACHE_WRITE; 1807 1808 return 0; 1809 } 1810 1811 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1812 1813 int 1814 wd_setcache(struct wd_softc *wd, int bits) 1815 { 1816 struct ataparams params; 1817 struct ata_command ata_c; 1818 1819 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1820 return EIO; 1821 1822 if (params.atap_cmd_set1 == 0x0000 || 1823 params.atap_cmd_set1 == 0xffff || 1824 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1825 return EOPNOTSUPP; 1826 1827 if ((bits & DKCACHE_READ) == 0 || 1828 (bits & DKCACHE_SAVE) != 0) 1829 return EOPNOTSUPP; 1830 1831 memset(&ata_c, 0, sizeof(struct ata_command)); 1832 ata_c.r_command = SET_FEATURES; 1833 ata_c.r_st_bmask = 0; 1834 ata_c.r_st_pmask = 0; 1835 ata_c.timeout = 30000; /* 30s timeout */ 1836 ata_c.flags = AT_WAIT; 1837 if (bits & DKCACHE_WRITE) 1838 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1839 else 1840 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1841 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1842 aprint_error_dev(wd->sc_dev, 1843 "wd_setcache command not complete\n"); 1844 return EIO; 1845 } 1846 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1847 char sbuf[sizeof(at_errbits) + 64]; 1848 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1849 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1850 return EIO; 1851 } 1852 return 0; 1853 } 1854 1855 static int 1856 wd_standby(struct wd_softc *wd, int flags) 1857 { 1858 struct ata_command ata_c; 1859 1860 memset(&ata_c, 0, sizeof(struct ata_command)); 1861 ata_c.r_command = WDCC_STANDBY_IMMED; 1862 ata_c.r_st_bmask = WDCS_DRDY; 1863 ata_c.r_st_pmask = WDCS_DRDY; 1864 ata_c.flags = flags; 1865 ata_c.timeout = 30000; /* 30s timeout */ 1866 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1867 aprint_error_dev(wd->sc_dev, 1868 "standby immediate command didn't complete\n"); 1869 return EIO; 1870 } 1871 if (ata_c.flags & AT_ERROR) { 1872 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1873 return ENODEV; 1874 } 1875 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1876 char sbuf[sizeof(at_errbits) + 64]; 1877 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1878 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1879 return EIO; 1880 } 1881 return 0; 1882 } 1883 1884 int 1885 wd_flushcache(struct wd_softc *wd, int flags) 1886 { 1887 struct ata_command ata_c; 1888 1889 /* 1890 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1891 * only ATA-2 and still support it. 1892 */ 1893 if (wd->drvp->ata_vers < 4 && 1894 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1895 wd->sc_params.atap_cmd_set2 == 0xffff)) 1896 return ENODEV; 1897 memset(&ata_c, 0, sizeof(struct ata_command)); 1898 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1899 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1900 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1901 else 1902 ata_c.r_command = WDCC_FLUSHCACHE; 1903 ata_c.r_st_bmask = WDCS_DRDY; 1904 ata_c.r_st_pmask = WDCS_DRDY; 1905 ata_c.flags = flags; 1906 ata_c.timeout = 30000; /* 30s timeout */ 1907 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1908 aprint_error_dev(wd->sc_dev, 1909 "flush cache command didn't complete\n"); 1910 return EIO; 1911 } 1912 if (ata_c.flags & AT_ERROR) { 1913 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1914 return ENODEV; 1915 } 1916 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1917 char sbuf[sizeof(at_errbits) + 64]; 1918 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1919 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1920 sbuf); 1921 return EIO; 1922 } 1923 return 0; 1924 } 1925 1926 bool 1927 wd_shutdown(device_t dev, int how) 1928 { 1929 struct wd_softc *wd = device_private(dev); 1930 1931 /* the adapter needs to be enabled */ 1932 if (wd->atabus->ata_addref(wd->drvp)) 1933 return true; /* no need to complain */ 1934 1935 wd_flushcache(wd, AT_POLL); 1936 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1937 wd_standby(wd, AT_POLL); 1938 return true; 1939 } 1940 1941 /* 1942 * Allocate space for a ioctl queue structure. Mostly taken from 1943 * scsipi_ioctl.c 1944 */ 1945 struct wd_ioctl * 1946 wi_get(void) 1947 { 1948 struct wd_ioctl *wi; 1949 int s; 1950 1951 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1952 buf_init(&wi->wi_bp); 1953 s = splbio(); 1954 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1955 splx(s); 1956 return (wi); 1957 } 1958 1959 /* 1960 * Free an ioctl structure and remove it from our list 1961 */ 1962 1963 void 1964 wi_free(struct wd_ioctl *wi) 1965 { 1966 int s; 1967 1968 s = splbio(); 1969 LIST_REMOVE(wi, wi_list); 1970 splx(s); 1971 buf_destroy(&wi->wi_bp); 1972 free(wi, M_TEMP); 1973 } 1974 1975 /* 1976 * Find a wd_ioctl structure based on the struct buf. 1977 */ 1978 1979 struct wd_ioctl * 1980 wi_find(struct buf *bp) 1981 { 1982 struct wd_ioctl *wi; 1983 int s; 1984 1985 s = splbio(); 1986 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1987 if (bp == &wi->wi_bp) 1988 break; 1989 splx(s); 1990 return (wi); 1991 } 1992 1993 /* 1994 * Ioctl pseudo strategy routine 1995 * 1996 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1997 * happens here is: 1998 * 1999 * - wdioctl() queues a wd_ioctl structure. 2000 * 2001 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2002 * user space I/O is required. If physio() is called, physio() eventually 2003 * calls wdioctlstrategy(). 2004 * 2005 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2006 * to perform the actual command 2007 * 2008 * The reason for the use of the pseudo strategy routine is because 2009 * when doing I/O to/from user space, physio _really_ wants to be in 2010 * the loop. We could put the entire buffer into the ioctl request 2011 * structure, but that won't scale if we want to do things like download 2012 * microcode. 2013 */ 2014 2015 void 2016 wdioctlstrategy(struct buf *bp) 2017 { 2018 struct wd_ioctl *wi; 2019 struct ata_command ata_c; 2020 int error = 0; 2021 2022 wi = wi_find(bp); 2023 if (wi == NULL) { 2024 printf("wdioctlstrategy: " 2025 "No matching ioctl request found in queue\n"); 2026 error = EINVAL; 2027 goto bad; 2028 } 2029 2030 memset(&ata_c, 0, sizeof(ata_c)); 2031 2032 /* 2033 * Abort if physio broke up the transfer 2034 */ 2035 2036 if (bp->b_bcount != wi->wi_atareq.datalen) { 2037 printf("physio split wd ioctl request... cannot proceed\n"); 2038 error = EIO; 2039 goto bad; 2040 } 2041 2042 /* 2043 * Abort if we didn't get a buffer size that was a multiple of 2044 * our sector size (or was larger than NBBY) 2045 */ 2046 2047 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2048 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2049 (1 << NBBY)) { 2050 error = EINVAL; 2051 goto bad; 2052 } 2053 2054 /* 2055 * Make sure a timeout was supplied in the ioctl request 2056 */ 2057 2058 if (wi->wi_atareq.timeout == 0) { 2059 error = EINVAL; 2060 goto bad; 2061 } 2062 2063 if (wi->wi_atareq.flags & ATACMD_READ) 2064 ata_c.flags |= AT_READ; 2065 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2066 ata_c.flags |= AT_WRITE; 2067 2068 if (wi->wi_atareq.flags & ATACMD_READREG) 2069 ata_c.flags |= AT_READREG; 2070 2071 ata_c.flags |= AT_WAIT; 2072 2073 ata_c.timeout = wi->wi_atareq.timeout; 2074 ata_c.r_command = wi->wi_atareq.command; 2075 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2076 ata_c.r_cyl = wi->wi_atareq.cylinder; 2077 ata_c.r_sector = wi->wi_atareq.sec_num; 2078 ata_c.r_count = wi->wi_atareq.sec_count; 2079 ata_c.r_features = wi->wi_atareq.features; 2080 ata_c.r_st_bmask = WDCS_DRDY; 2081 ata_c.r_st_pmask = WDCS_DRDY; 2082 ata_c.data = wi->wi_bp.b_data; 2083 ata_c.bcount = wi->wi_bp.b_bcount; 2084 2085 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2086 != ATACMD_COMPLETE) { 2087 wi->wi_atareq.retsts = ATACMD_ERROR; 2088 goto bad; 2089 } 2090 2091 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2092 if (ata_c.flags & AT_ERROR) { 2093 wi->wi_atareq.retsts = ATACMD_ERROR; 2094 wi->wi_atareq.error = ata_c.r_error; 2095 } else if (ata_c.flags & AT_DF) 2096 wi->wi_atareq.retsts = ATACMD_DF; 2097 else 2098 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2099 } else { 2100 wi->wi_atareq.retsts = ATACMD_OK; 2101 if (wi->wi_atareq.flags & ATACMD_READREG) { 2102 wi->wi_atareq.head = ata_c.r_head ; 2103 wi->wi_atareq.cylinder = ata_c.r_cyl; 2104 wi->wi_atareq.sec_num = ata_c.r_sector; 2105 wi->wi_atareq.sec_count = ata_c.r_count; 2106 wi->wi_atareq.features = ata_c.r_features; 2107 wi->wi_atareq.error = ata_c.r_error; 2108 } 2109 } 2110 2111 bp->b_error = 0; 2112 biodone(bp); 2113 return; 2114 bad: 2115 bp->b_error = error; 2116 biodone(bp); 2117 } 2118
Indexes created Mon Sep 29 21:09:56 GMT 2025