wd.c revision 1.393
1 /* $NetBSD: wd.c,v 1.393 2012/06/26 09:49:24 bouyer 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 1.393 2012/06/26 09:49:24 bouyer Exp $"); 58 59 #include "opt_ata.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/conf.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/buf.h> 69 #include <sys/bufq.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/proc.h> 77 #include <sys/reboot.h> 78 #include <sys/vnode.h> 79 #include <sys/rnd.h> 80 81 #include <sys/intr.h> 82 #include <sys/bus.h> 83 84 #include <dev/ata/atareg.h> 85 #include <dev/ata/atavar.h> 86 #include <dev/ata/wdvar.h> 87 #include <dev/ic/wdcreg.h> 88 #include <sys/ataio.h> 89 #include "locators.h" 90 91 #include <prop/proplib.h> 92 93 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 94 #define WDIORETRIES 5 /* number of retries before giving up */ 95 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 96 97 #define WDUNIT(dev) DISKUNIT(dev) 98 #define WDPART(dev) DISKPART(dev) 99 #define WDMINOR(unit, part) DISKMINOR(unit, part) 100 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 101 102 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 103 104 #define DEBUG_INTR 0x01 105 #define DEBUG_XFERS 0x02 106 #define DEBUG_STATUS 0x04 107 #define DEBUG_FUNCS 0x08 108 #define DEBUG_PROBE 0x10 109 #ifdef ATADEBUG 110 int wdcdebug_wd_mask = 0x0; 111 #define ATADEBUG_PRINT(args, level) \ 112 if (wdcdebug_wd_mask & (level)) \ 113 printf args 114 #else 115 #define ATADEBUG_PRINT(args, level) 116 #endif 117 118 int wdprobe(device_t, cfdata_t, void *); 119 void wdattach(device_t, device_t, void *); 120 int wddetach(device_t, int); 121 int wdprint(void *, char *); 122 void wdperror(const struct wd_softc *); 123 124 static void wdminphys(struct buf *); 125 126 static int wdlastclose(device_t); 127 static bool wd_suspend(device_t, const pmf_qual_t *); 128 static int wd_standby(struct wd_softc *, int); 129 130 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 131 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 132 133 extern struct cfdriver wd_cd; 134 135 dev_type_open(wdopen); 136 dev_type_close(wdclose); 137 dev_type_read(wdread); 138 dev_type_write(wdwrite); 139 dev_type_ioctl(wdioctl); 140 dev_type_strategy(wdstrategy); 141 dev_type_dump(wddump); 142 dev_type_size(wdsize); 143 144 const struct bdevsw wd_bdevsw = { 145 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 146 }; 147 148 const struct cdevsw wd_cdevsw = { 149 wdopen, wdclose, wdread, wdwrite, wdioctl, 150 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 151 }; 152 153 /* 154 * Glue necessary to hook WDCIOCCOMMAND into physio 155 */ 156 157 struct wd_ioctl { 158 LIST_ENTRY(wd_ioctl) wi_list; 159 struct buf wi_bp; 160 struct uio wi_uio; 161 struct iovec wi_iov; 162 atareq_t wi_atareq; 163 struct wd_softc *wi_softc; 164 }; 165 166 LIST_HEAD(, wd_ioctl) wi_head; 167 168 struct wd_ioctl *wi_find(struct buf *); 169 void wi_free(struct wd_ioctl *); 170 struct wd_ioctl *wi_get(void); 171 void wdioctlstrategy(struct buf *); 172 173 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 174 void wdgetdisklabel(struct wd_softc *); 175 void wdstart(void *); 176 void wdstart1(struct wd_softc*, struct buf *); 177 void wdrestart(void *); 178 void wddone(void *); 179 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 180 int wd_flushcache(struct wd_softc *, int); 181 bool wd_shutdown(device_t, int); 182 183 int wd_getcache(struct wd_softc *, int *); 184 int wd_setcache(struct wd_softc *, int); 185 186 struct dkdriver wddkdriver = { wdstrategy, wdminphys }; 187 188 #ifdef HAS_BAD144_HANDLING 189 static void bad144intern(struct wd_softc *); 190 #endif 191 192 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 193 194 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 195 196 /* 197 * Quirk table for IDE drives. Put more-specific matches first, since 198 * a simple globing routine is used for matching. 199 */ 200 static const struct wd_quirk { 201 const char *wdq_match; /* inquiry pattern to match */ 202 int wdq_quirks; /* drive quirks */ 203 } wd_quirk_table[] = { 204 /* 205 * Some Seagate S-ATA drives have a PHY which can get confused 206 * with the way data is packetized by some S-ATA controllers. 207 * 208 * The work-around is to split in two any write transfer whose 209 * sector count % 15 == 1 (assuming 512 byte sectors). 210 * 211 * XXX This is an incomplete list. There are at least a couple 212 * XXX more model numbers. If you have trouble with such transfers 213 * XXX (8K is the most common) on Seagate S-ATA drives, please 214 * XXX notify thorpej (at) NetBSD.org. 215 * 216 * The ST360015AS has not yet been confirmed to have this 217 * issue, however, it is the only other drive in the 218 * Seagate Barracuda Serial ATA V family. 219 * 220 */ 221 { "ST3120023AS", 222 WD_QUIRK_SPLIT_MOD15_WRITE }, 223 { "ST380023AS", 224 WD_QUIRK_SPLIT_MOD15_WRITE }, 225 { "ST360015AS", 226 WD_QUIRK_SPLIT_MOD15_WRITE }, 227 { NULL, 228 0 } 229 }; 230 231 static const struct wd_quirk * 232 wd_lookup_quirks(const char *name) 233 { 234 const struct wd_quirk *wdq; 235 const char *estr; 236 237 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 238 /* 239 * We only want exact matches (which include matches 240 * against globbing characters). 241 */ 242 if (pmatch(name, wdq->wdq_match, &estr) == 2) 243 return (wdq); 244 } 245 return (NULL); 246 } 247 248 int 249 wdprobe(device_t parent, cfdata_t match, void *aux) 250 { 251 struct ata_device *adev = aux; 252 253 if (adev == NULL) 254 return 0; 255 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 256 return 0; 257 258 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 259 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 260 return 0; 261 return 1; 262 } 263 264 void 265 wdattach(device_t parent, device_t self, void *aux) 266 { 267 struct wd_softc *wd = device_private(self); 268 struct ata_device *adev= aux; 269 int i, blank; 270 char tbuf[41], pbuf[9], c, *p, *q; 271 const struct wd_quirk *wdq; 272 273 wd->sc_dev = self; 274 275 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 276 callout_init(&wd->sc_restart_ch, 0); 277 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 278 #ifdef WD_SOFTBADSECT 279 SLIST_INIT(&wd->sc_bslist); 280 #endif 281 wd->atabus = adev->adev_bustype; 282 wd->openings = adev->adev_openings; 283 wd->drvp = adev->adev_drv_data; 284 285 wd->drvp->drv_done = wddone; 286 wd->drvp->drv_softc = wd->sc_dev; 287 288 aprint_naive("\n"); 289 aprint_normal("\n"); 290 291 /* read our drive info */ 292 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 293 aprint_error_dev(self, "IDENTIFY failed\n"); 294 return; 295 } 296 297 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 298 i < sizeof(wd->sc_params.atap_model); i++) { 299 c = *p++; 300 if (c == '\0') 301 break; 302 if (c != ' ') { 303 if (blank) { 304 *q++ = ' '; 305 blank = 0; 306 } 307 *q++ = c; 308 } else 309 blank = 1; 310 } 311 *q++ = '\0'; 312 313 aprint_normal_dev(self, "<%s>\n", tbuf); 314 315 wdq = wd_lookup_quirks(tbuf); 316 if (wdq != NULL) 317 wd->sc_quirks = wdq->wdq_quirks; 318 319 if (wd->sc_quirks != 0) { 320 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 321 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 322 aprint_normal_dev(self, "quirks %s\n", sbuf); 323 } 324 325 if ((wd->sc_params.atap_multi & 0xff) > 1) { 326 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 327 } else { 328 wd->sc_multi = 1; 329 } 330 331 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 332 wd->sc_multi); 333 334 /* 48-bit LBA addressing */ 335 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 336 wd->sc_flags |= WDF_LBA48; 337 338 /* Prior to ATA-4, LBA was optional. */ 339 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 340 wd->sc_flags |= WDF_LBA; 341 #if 0 342 /* ATA-4 requires LBA. */ 343 if (wd->sc_params.atap_ataversion != 0xffff && 344 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 345 wd->sc_flags |= WDF_LBA; 346 #endif 347 348 if ((wd->sc_flags & WDF_LBA48) != 0) { 349 aprint_verbose(" LBA48 addressing\n"); 350 wd->sc_capacity = 351 ((u_int64_t) wd->sc_params.atap_max_lba[3] << 48) | 352 ((u_int64_t) wd->sc_params.atap_max_lba[2] << 32) | 353 ((u_int64_t) wd->sc_params.atap_max_lba[1] << 16) | 354 ((u_int64_t) wd->sc_params.atap_max_lba[0] << 0); 355 wd->sc_capacity28 = 356 (wd->sc_params.atap_capacity[1] << 16) | 357 wd->sc_params.atap_capacity[0]; 358 } else if ((wd->sc_flags & WDF_LBA) != 0) { 359 aprint_verbose(" LBA addressing\n"); 360 wd->sc_capacity28 = wd->sc_capacity = 361 (wd->sc_params.atap_capacity[1] << 16) | 362 wd->sc_params.atap_capacity[0]; 363 } else { 364 aprint_verbose(" chs addressing\n"); 365 wd->sc_capacity28 = wd->sc_capacity = 366 wd->sc_params.atap_cylinders * 367 wd->sc_params.atap_heads * 368 wd->sc_params.atap_sectors; 369 } 370 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 371 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 372 "%d bytes/sect x %llu sectors\n", 373 pbuf, 374 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 375 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 376 wd->sc_params.atap_cylinders, 377 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 378 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 379 380 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 381 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 382 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 383 /* 384 * Initialize and attach the disk structure. 385 */ 386 /* we fill in dk_info later */ 387 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 388 disk_attach(&wd->sc_dk); 389 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 390 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 391 RND_TYPE_DISK, 0); 392 393 /* Discover wedges on this disk. */ 394 dkwedge_discover(&wd->sc_dk); 395 396 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 397 aprint_error_dev(self, "couldn't establish power handler\n"); 398 } 399 400 static bool 401 wd_suspend(device_t dv, const pmf_qual_t *qual) 402 { 403 struct wd_softc *sc = device_private(dv); 404 405 wd_flushcache(sc, AT_WAIT); 406 wd_standby(sc, AT_WAIT); 407 return true; 408 } 409 410 int 411 wddetach(device_t self, int flags) 412 { 413 struct wd_softc *sc = device_private(self); 414 int bmaj, cmaj, i, mn, rc, s; 415 416 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 417 return rc; 418 419 /* locate the major number */ 420 bmaj = bdevsw_lookup_major(&wd_bdevsw); 421 cmaj = cdevsw_lookup_major(&wd_cdevsw); 422 423 /* Nuke the vnodes for any open instances. */ 424 for (i = 0; i < MAXPARTITIONS; i++) { 425 mn = WDMINOR(device_unit(self), i); 426 vdevgone(bmaj, mn, mn, VBLK); 427 vdevgone(cmaj, mn, mn, VCHR); 428 } 429 430 /* Delete all of our wedges. */ 431 dkwedge_delall(&sc->sc_dk); 432 433 s = splbio(); 434 435 /* Kill off any queued buffers. */ 436 bufq_drain(sc->sc_q); 437 438 bufq_free(sc->sc_q); 439 sc->atabus->ata_killpending(sc->drvp); 440 441 splx(s); 442 443 /* Detach disk. */ 444 disk_detach(&sc->sc_dk); 445 disk_destroy(&sc->sc_dk); 446 447 #ifdef WD_SOFTBADSECT 448 /* Clean out the bad sector list */ 449 while (!SLIST_EMPTY(&sc->sc_bslist)) { 450 void *head = SLIST_FIRST(&sc->sc_bslist); 451 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 452 free(head, M_TEMP); 453 } 454 sc->sc_bscount = 0; 455 #endif 456 457 pmf_device_deregister(self); 458 459 /* Unhook the entropy source. */ 460 rnd_detach_source(&sc->rnd_source); 461 462 callout_destroy(&sc->sc_restart_ch); 463 464 sc->drvp->drive_flags = 0; /* no drive any more here */ 465 466 return (0); 467 } 468 469 /* 470 * Read/write routine for a buffer. Validates the arguments and schedules the 471 * transfer. Does not wait for the transfer to complete. 472 */ 473 void 474 wdstrategy(struct buf *bp) 475 { 476 struct wd_softc *wd = 477 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 478 struct disklabel *lp = wd->sc_dk.dk_label; 479 daddr_t blkno; 480 int s; 481 482 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 483 DEBUG_XFERS); 484 485 /* Valid request? */ 486 if (bp->b_blkno < 0 || 487 (bp->b_bcount % lp->d_secsize) != 0 || 488 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 489 bp->b_error = EINVAL; 490 goto done; 491 } 492 493 /* If device invalidated (e.g. media change, door open, 494 * device detachment), then error. 495 */ 496 if ((wd->sc_flags & WDF_LOADED) == 0 || 497 !device_is_enabled(wd->sc_dev)) { 498 bp->b_error = EIO; 499 goto done; 500 } 501 502 /* If it's a null transfer, return immediately. */ 503 if (bp->b_bcount == 0) 504 goto done; 505 506 /* 507 * Do bounds checking, adjust transfer. if error, process. 508 * If end of partition, just return. 509 */ 510 if (WDPART(bp->b_dev) == RAW_PART) { 511 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 512 wd->sc_capacity) <= 0) 513 goto done; 514 } else { 515 if (bounds_check_with_label(&wd->sc_dk, bp, 516 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 517 goto done; 518 } 519 520 /* 521 * Now convert the block number to absolute and put it in 522 * terms of the device's logical block size. 523 */ 524 if (lp->d_secsize >= DEV_BSIZE) 525 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 526 else 527 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 528 529 if (WDPART(bp->b_dev) != RAW_PART) 530 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 531 532 bp->b_rawblkno = blkno; 533 534 #ifdef WD_SOFTBADSECT 535 /* 536 * If the transfer about to be attempted contains only a block that 537 * is known to be bad then return an error for the transfer without 538 * even attempting to start a transfer up under the premis that we 539 * will just end up doing more retries for a transfer that will end 540 * up failing again. 541 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 542 */ 543 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 544 struct disk_badsectors *dbs; 545 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 546 547 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 548 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 549 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 550 bp->b_error = EIO; 551 goto done; 552 } 553 } 554 #endif 555 556 /* Queue transfer on drive, activate drive and controller if idle. */ 557 s = splbio(); 558 bufq_put(wd->sc_q, bp); 559 wdstart(wd); 560 splx(s); 561 return; 562 done: 563 /* Toss transfer; we're done early. */ 564 bp->b_resid = bp->b_bcount; 565 biodone(bp); 566 } 567 568 /* 569 * Queue a drive for I/O. 570 */ 571 void 572 wdstart(void *arg) 573 { 574 struct wd_softc *wd = arg; 575 struct buf *bp = NULL; 576 577 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 578 DEBUG_XFERS); 579 580 if (!device_is_active(wd->sc_dev)) 581 return; 582 583 while (wd->openings > 0) { 584 585 /* Is there a buf for us ? */ 586 if ((bp = bufq_get(wd->sc_q)) == NULL) 587 return; 588 589 /* 590 * Make the command. First lock the device 591 */ 592 wd->openings--; 593 594 wd->retries = 0; 595 wdstart1(wd, bp); 596 } 597 } 598 599 static void 600 wd_split_mod15_write(struct buf *bp) 601 { 602 struct buf *obp = bp->b_private; 603 struct wd_softc *sc = 604 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 605 int s; 606 607 if (__predict_false(bp->b_error != 0)) { 608 /* 609 * Propagate the error. If this was the first half of 610 * the original transfer, make sure to account for that 611 * in the residual. 612 */ 613 if (bp->b_data == obp->b_data) 614 bp->b_resid += bp->b_bcount; 615 goto done; 616 } 617 618 /* 619 * If this was the second half of the transfer, we're all done! 620 */ 621 if (bp->b_data != obp->b_data) 622 goto done; 623 624 /* 625 * Advance the pointer to the second half and issue that command 626 * using the same opening. 627 */ 628 bp->b_flags = obp->b_flags; 629 bp->b_oflags = obp->b_oflags; 630 bp->b_cflags = obp->b_cflags; 631 bp->b_data = (char *)bp->b_data + bp->b_bcount; 632 bp->b_blkno += (bp->b_bcount / 512); 633 bp->b_rawblkno += (bp->b_bcount / 512); 634 s = splbio(); 635 wdstart1(sc, bp); 636 splx(s); 637 return; 638 639 done: 640 obp->b_error = bp->b_error; 641 obp->b_resid = bp->b_resid; 642 s = splbio(); 643 putiobuf(bp); 644 biodone(obp); 645 sc->openings++; 646 splx(s); 647 /* wddone() will call wdstart() */ 648 } 649 650 void 651 wdstart1(struct wd_softc *wd, struct buf *bp) 652 { 653 654 /* 655 * Deal with the "split mod15 write" quirk. We just divide the 656 * transfer in two, doing the first half and then then second half 657 * with the same command opening. 658 * 659 * Note we MUST do this here, because we can't let insertion 660 * into the bufq cause the transfers to be re-merged. 661 */ 662 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 663 (bp->b_flags & B_READ) == 0 && 664 bp->b_bcount > 512 && 665 ((bp->b_bcount / 512) % 15) == 1)) { 666 struct buf *nbp; 667 668 /* already at splbio */ 669 nbp = getiobuf(NULL, false); 670 if (__predict_false(nbp == NULL)) { 671 /* No memory -- fail the iop. */ 672 bp->b_error = ENOMEM; 673 bp->b_resid = bp->b_bcount; 674 biodone(bp); 675 wd->openings++; 676 return; 677 } 678 679 nbp->b_error = 0; 680 nbp->b_proc = bp->b_proc; 681 nbp->b_dev = bp->b_dev; 682 683 nbp->b_bcount = bp->b_bcount / 2; 684 nbp->b_bufsize = bp->b_bcount / 2; 685 nbp->b_data = bp->b_data; 686 687 nbp->b_blkno = bp->b_blkno; 688 nbp->b_rawblkno = bp->b_rawblkno; 689 690 nbp->b_flags = bp->b_flags; 691 nbp->b_oflags = bp->b_oflags; 692 nbp->b_cflags = bp->b_cflags; 693 nbp->b_iodone = wd_split_mod15_write; 694 695 /* Put ptr to orig buf in b_private and use new buf */ 696 nbp->b_private = bp; 697 698 BIO_COPYPRIO(nbp, bp); 699 700 bp = nbp; 701 } 702 703 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 704 wd->sc_wdc_bio.bcount = bp->b_bcount; 705 wd->sc_wdc_bio.databuf = bp->b_data; 706 wd->sc_wdc_bio.blkdone =0; 707 KASSERT(bp == wd->sc_bp || wd->sc_bp == NULL); 708 wd->sc_bp = bp; 709 /* 710 * If we're retrying, retry in single-sector mode. This will give us 711 * the sector number of the problem, and will eventually allow the 712 * transfer to succeed. 713 */ 714 if (wd->retries >= WDIORETRIES_SINGLE) 715 wd->sc_wdc_bio.flags = ATA_SINGLE; 716 else 717 wd->sc_wdc_bio.flags = 0; 718 if (wd->sc_flags & WDF_LBA48 && 719 (wd->sc_wdc_bio.blkno + 720 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 721 wd->sc_capacity28) 722 wd->sc_wdc_bio.flags |= ATA_LBA48; 723 if (wd->sc_flags & WDF_LBA) 724 wd->sc_wdc_bio.flags |= ATA_LBA; 725 if (bp->b_flags & B_READ) 726 wd->sc_wdc_bio.flags |= ATA_READ; 727 /* Instrumentation. */ 728 disk_busy(&wd->sc_dk); 729 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 730 case ATACMD_TRY_AGAIN: 731 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 732 break; 733 case ATACMD_QUEUED: 734 case ATACMD_COMPLETE: 735 break; 736 default: 737 panic("wdstart1: bad return code from ata_bio()"); 738 } 739 } 740 741 void 742 wddone(void *v) 743 { 744 struct wd_softc *wd = device_private(v); 745 struct buf *bp = wd->sc_bp; 746 const char *errmsg; 747 int do_perror = 0; 748 749 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 750 DEBUG_XFERS); 751 if (bp == NULL) 752 return; 753 bp->b_resid = wd->sc_wdc_bio.bcount; 754 switch (wd->sc_wdc_bio.error) { 755 case ERR_DMA: 756 errmsg = "DMA error"; 757 goto retry; 758 case ERR_DF: 759 errmsg = "device fault"; 760 goto retry; 761 case TIMEOUT: 762 errmsg = "device timeout"; 763 goto retry; 764 case ERR_RESET: 765 errmsg = "channel reset"; 766 goto retry2; 767 case ERROR: 768 /* Don't care about media change bits */ 769 if (wd->sc_wdc_bio.r_error != 0 && 770 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 771 goto noerror; 772 errmsg = "error"; 773 do_perror = 1; 774 retry: /* Just reset and retry. Can we do more ? */ 775 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 776 retry2: 777 diskerr(bp, "wd", errmsg, LOG_PRINTF, 778 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 779 if (wd->retries < WDIORETRIES) 780 printf(", retrying"); 781 printf("\n"); 782 if (do_perror) 783 wdperror(wd); 784 if (wd->retries < WDIORETRIES) { 785 wd->retries++; 786 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 787 wdrestart, wd); 788 return; 789 } 790 791 #ifdef WD_SOFTBADSECT 792 /* 793 * Not all errors indicate a failed block but those that do, 794 * put the block on the bad-block list for the device. Only 795 * do this for reads because the drive should do it for writes, 796 * itself, according to Manuel. 797 */ 798 if ((bp->b_flags & B_READ) && 799 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 800 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 801 struct disk_badsectors *dbs; 802 803 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 804 dbs->dbs_min = bp->b_rawblkno; 805 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 806 microtime(&dbs->dbs_failedat); 807 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 808 wd->sc_bscount++; 809 } 810 #endif 811 bp->b_error = EIO; 812 break; 813 case NOERROR: 814 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 815 aprint_error_dev(wd->sc_dev, 816 "soft error (corrected)\n"); 817 break; 818 case ERR_NODEV: 819 bp->b_error = EIO; 820 break; 821 } 822 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 823 /* 824 * the disk or controller sometimes report a complete 825 * xfer, when there has been an error. This is wrong, 826 * assume nothing got transfered in this case 827 */ 828 bp->b_resid = bp->b_bcount; 829 } 830 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 831 (bp->b_flags & B_READ)); 832 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 833 /* XXX Yuck, but we don't want to increment openings in this case */ 834 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 835 biodone(bp); 836 else { 837 biodone(bp); 838 wd->openings++; 839 } 840 KASSERT(wd->sc_bp != NULL); 841 wd->sc_bp = NULL; 842 wdstart(wd); 843 } 844 845 void 846 wdrestart(void *v) 847 { 848 struct wd_softc *wd = v; 849 struct buf *bp = wd->sc_bp; 850 int s; 851 852 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 853 DEBUG_XFERS); 854 s = splbio(); 855 wdstart1(v, bp); 856 splx(s); 857 } 858 859 static void 860 wdminphys(struct buf *bp) 861 { 862 863 if (bp->b_bcount > (512 * 128)) { 864 bp->b_bcount = (512 * 128); 865 } 866 minphys(bp); 867 } 868 869 int 870 wdread(dev_t dev, struct uio *uio, int flags) 871 { 872 873 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 874 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 875 } 876 877 int 878 wdwrite(dev_t dev, struct uio *uio, int flags) 879 { 880 881 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 882 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 883 } 884 885 int 886 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 887 { 888 struct wd_softc *wd; 889 int part, error; 890 891 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 892 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 893 if (wd == NULL) 894 return (ENXIO); 895 896 if (! device_is_active(wd->sc_dev)) 897 return (ENODEV); 898 899 part = WDPART(dev); 900 901 mutex_enter(&wd->sc_dk.dk_openlock); 902 903 /* 904 * If there are wedges, and this is not RAW_PART, then we 905 * need to fail. 906 */ 907 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 908 error = EBUSY; 909 goto bad1; 910 } 911 912 /* 913 * If this is the first open of this device, add a reference 914 * to the adapter. 915 */ 916 if (wd->sc_dk.dk_openmask == 0 && 917 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 918 goto bad1; 919 920 if (wd->sc_dk.dk_openmask != 0) { 921 /* 922 * If any partition is open, but the disk has been invalidated, 923 * disallow further opens. 924 */ 925 if ((wd->sc_flags & WDF_LOADED) == 0) { 926 error = EIO; 927 goto bad2; 928 } 929 } else { 930 if ((wd->sc_flags & WDF_LOADED) == 0) { 931 wd->sc_flags |= WDF_LOADED; 932 933 /* Load the physical device parameters. */ 934 wd_get_params(wd, AT_WAIT, &wd->sc_params); 935 936 /* Load the partition info if not already loaded. */ 937 wdgetdisklabel(wd); 938 } 939 } 940 941 /* Check that the partition exists. */ 942 if (part != RAW_PART && 943 (part >= wd->sc_dk.dk_label->d_npartitions || 944 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 945 error = ENXIO; 946 goto bad2; 947 } 948 949 /* Insure only one open at a time. */ 950 switch (fmt) { 951 case S_IFCHR: 952 wd->sc_dk.dk_copenmask |= (1 << part); 953 break; 954 case S_IFBLK: 955 wd->sc_dk.dk_bopenmask |= (1 << part); 956 break; 957 } 958 wd->sc_dk.dk_openmask = 959 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 960 961 mutex_exit(&wd->sc_dk.dk_openlock); 962 return 0; 963 964 bad2: 965 if (wd->sc_dk.dk_openmask == 0) 966 wd->atabus->ata_delref(wd->drvp); 967 bad1: 968 mutex_exit(&wd->sc_dk.dk_openlock); 969 return error; 970 } 971 972 /* 973 * Caller must hold wd->sc_dk.dk_openlock. 974 */ 975 static int 976 wdlastclose(device_t self) 977 { 978 struct wd_softc *wd = device_private(self); 979 980 wd_flushcache(wd, AT_WAIT); 981 982 if (! (wd->sc_flags & WDF_KLABEL)) 983 wd->sc_flags &= ~WDF_LOADED; 984 985 wd->atabus->ata_delref(wd->drvp); 986 987 return 0; 988 } 989 990 int 991 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 992 { 993 struct wd_softc *wd = 994 device_lookup_private(&wd_cd, WDUNIT(dev)); 995 int part = WDPART(dev); 996 997 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 998 999 mutex_enter(&wd->sc_dk.dk_openlock); 1000 1001 switch (fmt) { 1002 case S_IFCHR: 1003 wd->sc_dk.dk_copenmask &= ~(1 << part); 1004 break; 1005 case S_IFBLK: 1006 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1007 break; 1008 } 1009 wd->sc_dk.dk_openmask = 1010 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1011 1012 if (wd->sc_dk.dk_openmask == 0) 1013 wdlastclose(wd->sc_dev); 1014 1015 mutex_exit(&wd->sc_dk.dk_openlock); 1016 return 0; 1017 } 1018 1019 void 1020 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1021 { 1022 1023 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1024 memset(lp, 0, sizeof(struct disklabel)); 1025 1026 lp->d_secsize = DEV_BSIZE; 1027 lp->d_ntracks = wd->sc_params.atap_heads; 1028 lp->d_nsectors = wd->sc_params.atap_sectors; 1029 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1030 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1031 wd->sc_params.atap_cylinders; 1032 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1033 1034 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1035 lp->d_type = DTYPE_ST506; 1036 else 1037 lp->d_type = DTYPE_ESDI; 1038 1039 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1040 strncpy(lp->d_packname, "fictitious", 16); 1041 if (wd->sc_capacity > UINT32_MAX) 1042 lp->d_secperunit = UINT32_MAX; 1043 else 1044 lp->d_secperunit = wd->sc_capacity; 1045 lp->d_rpm = 3600; 1046 lp->d_interleave = 1; 1047 lp->d_flags = 0; 1048 1049 lp->d_partitions[RAW_PART].p_offset = 0; 1050 lp->d_partitions[RAW_PART].p_size = 1051 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1052 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1053 lp->d_npartitions = RAW_PART + 1; 1054 1055 lp->d_magic = DISKMAGIC; 1056 lp->d_magic2 = DISKMAGIC; 1057 lp->d_checksum = dkcksum(lp); 1058 } 1059 1060 /* 1061 * Fabricate a default disk label, and try to read the correct one. 1062 */ 1063 void 1064 wdgetdisklabel(struct wd_softc *wd) 1065 { 1066 struct disklabel *lp = wd->sc_dk.dk_label; 1067 const char *errstring; 1068 int s; 1069 1070 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1071 1072 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1073 1074 wdgetdefaultlabel(wd, lp); 1075 1076 wd->sc_badsect[0] = -1; 1077 1078 if (wd->drvp->state > RESET) { 1079 s = splbio(); 1080 wd->drvp->drive_flags |= DRIVE_RESET; 1081 splx(s); 1082 } 1083 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1084 RAW_PART), wdstrategy, lp, 1085 wd->sc_dk.dk_cpulabel); 1086 if (errstring) { 1087 /* 1088 * This probably happened because the drive's default 1089 * geometry doesn't match the DOS geometry. We 1090 * assume the DOS geometry is now in the label and try 1091 * again. XXX This is a kluge. 1092 */ 1093 if (wd->drvp->state > RESET) { 1094 s = splbio(); 1095 wd->drvp->drive_flags |= DRIVE_RESET; 1096 splx(s); 1097 } 1098 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1099 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1100 } 1101 if (errstring) { 1102 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1103 return; 1104 } 1105 1106 if (wd->drvp->state > RESET) { 1107 s = splbio(); 1108 wd->drvp->drive_flags |= DRIVE_RESET; 1109 splx(s); 1110 } 1111 #ifdef HAS_BAD144_HANDLING 1112 if ((lp->d_flags & D_BADSECT) != 0) 1113 bad144intern(wd); 1114 #endif 1115 } 1116 1117 void 1118 wdperror(const struct wd_softc *wd) 1119 { 1120 static const char *const errstr0_3[] = {"address mark not found", 1121 "track 0 not found", "aborted command", "media change requested", 1122 "id not found", "media changed", "uncorrectable data error", 1123 "bad block detected"}; 1124 static const char *const errstr4_5[] = { 1125 "obsolete (address mark not found)", 1126 "no media/write protected", "aborted command", 1127 "media change requested", "id not found", "media changed", 1128 "uncorrectable data error", "interface CRC error"}; 1129 const char *const *errstr; 1130 int i; 1131 const char *sep = ""; 1132 1133 const char *devname = device_xname(wd->sc_dev); 1134 struct ata_drive_datas *drvp = wd->drvp; 1135 int errno = wd->sc_wdc_bio.r_error; 1136 1137 if (drvp->ata_vers >= 4) 1138 errstr = errstr4_5; 1139 else 1140 errstr = errstr0_3; 1141 1142 printf("%s: (", devname); 1143 1144 if (errno == 0) 1145 printf("error not notified"); 1146 1147 for (i = 0; i < 8; i++) { 1148 if (errno & (1 << i)) { 1149 printf("%s%s", sep, errstr[i]); 1150 sep = ", "; 1151 } 1152 } 1153 printf(")\n"); 1154 } 1155 1156 int 1157 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1158 { 1159 struct wd_softc *wd = 1160 device_lookup_private(&wd_cd, WDUNIT(dev)); 1161 int error = 0, s; 1162 #ifdef __HAVE_OLD_DISKLABEL 1163 struct disklabel *newlabel = NULL; 1164 #endif 1165 1166 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1167 1168 if ((wd->sc_flags & WDF_LOADED) == 0) 1169 return EIO; 1170 1171 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1172 if (error != EPASSTHROUGH) 1173 return (error); 1174 1175 switch (xfer) { 1176 #ifdef HAS_BAD144_HANDLING 1177 case DIOCSBAD: 1178 if ((flag & FWRITE) == 0) 1179 return EBADF; 1180 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1181 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1182 bad144intern(wd); 1183 return 0; 1184 #endif 1185 #ifdef WD_SOFTBADSECT 1186 case DIOCBSLIST : 1187 { 1188 u_int32_t count, missing, skip; 1189 struct disk_badsecinfo dbsi; 1190 struct disk_badsectors *dbs; 1191 size_t available; 1192 uint8_t *laddr; 1193 1194 dbsi = *(struct disk_badsecinfo *)addr; 1195 missing = wd->sc_bscount; 1196 count = 0; 1197 available = dbsi.dbsi_bufsize; 1198 skip = dbsi.dbsi_skip; 1199 laddr = (uint8_t *)dbsi.dbsi_buffer; 1200 1201 /* 1202 * We start this loop with the expectation that all of the 1203 * entries will be missed and decrement this counter each 1204 * time we either skip over one (already copied out) or 1205 * we actually copy it back to user space. The structs 1206 * holding the bad sector information are copied directly 1207 * back to user space whilst the summary is returned via 1208 * the struct passed in via the ioctl. 1209 */ 1210 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1211 if (skip > 0) { 1212 missing--; 1213 skip--; 1214 continue; 1215 } 1216 if (available < sizeof(*dbs)) 1217 break; 1218 available -= sizeof(*dbs); 1219 copyout(dbs, laddr, sizeof(*dbs)); 1220 laddr += sizeof(*dbs); 1221 missing--; 1222 count++; 1223 } 1224 dbsi.dbsi_left = missing; 1225 dbsi.dbsi_copied = count; 1226 *(struct disk_badsecinfo *)addr = dbsi; 1227 return 0; 1228 } 1229 1230 case DIOCBSFLUSH : 1231 /* Clean out the bad sector list */ 1232 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1233 void *head = SLIST_FIRST(&wd->sc_bslist); 1234 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1235 free(head, M_TEMP); 1236 } 1237 wd->sc_bscount = 0; 1238 return 0; 1239 #endif 1240 case DIOCGDINFO: 1241 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1242 return 0; 1243 #ifdef __HAVE_OLD_DISKLABEL 1244 case ODIOCGDINFO: 1245 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1246 if (newlabel == NULL) 1247 return EIO; 1248 *newlabel = *(wd->sc_dk.dk_label); 1249 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1250 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1251 else 1252 error = ENOTTY; 1253 free(newlabel, M_TEMP); 1254 return error; 1255 #endif 1256 1257 case DIOCGPART: 1258 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1259 ((struct partinfo *)addr)->part = 1260 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1261 return 0; 1262 1263 case DIOCWDINFO: 1264 case DIOCSDINFO: 1265 #ifdef __HAVE_OLD_DISKLABEL 1266 case ODIOCWDINFO: 1267 case ODIOCSDINFO: 1268 #endif 1269 { 1270 struct disklabel *lp; 1271 1272 if ((flag & FWRITE) == 0) 1273 return EBADF; 1274 1275 #ifdef __HAVE_OLD_DISKLABEL 1276 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1277 newlabel = malloc(sizeof *newlabel, M_TEMP, 1278 M_WAITOK | M_ZERO); 1279 if (newlabel == NULL) 1280 return EIO; 1281 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1282 lp = newlabel; 1283 } else 1284 #endif 1285 lp = (struct disklabel *)addr; 1286 1287 mutex_enter(&wd->sc_dk.dk_openlock); 1288 wd->sc_flags |= WDF_LABELLING; 1289 1290 error = setdisklabel(wd->sc_dk.dk_label, 1291 lp, /*wd->sc_dk.dk_openmask : */0, 1292 wd->sc_dk.dk_cpulabel); 1293 if (error == 0) { 1294 if (wd->drvp->state > RESET) { 1295 s = splbio(); 1296 wd->drvp->drive_flags |= DRIVE_RESET; 1297 splx(s); 1298 } 1299 if (xfer == DIOCWDINFO 1300 #ifdef __HAVE_OLD_DISKLABEL 1301 || xfer == ODIOCWDINFO 1302 #endif 1303 ) 1304 error = writedisklabel(WDLABELDEV(dev), 1305 wdstrategy, wd->sc_dk.dk_label, 1306 wd->sc_dk.dk_cpulabel); 1307 } 1308 1309 wd->sc_flags &= ~WDF_LABELLING; 1310 mutex_exit(&wd->sc_dk.dk_openlock); 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 if (newlabel != NULL) 1313 free(newlabel, M_TEMP); 1314 #endif 1315 return error; 1316 } 1317 1318 case DIOCKLABEL: 1319 if (*(int *)addr) 1320 wd->sc_flags |= WDF_KLABEL; 1321 else 1322 wd->sc_flags &= ~WDF_KLABEL; 1323 return 0; 1324 1325 case DIOCWLABEL: 1326 if ((flag & FWRITE) == 0) 1327 return EBADF; 1328 if (*(int *)addr) 1329 wd->sc_flags |= WDF_WLABEL; 1330 else 1331 wd->sc_flags &= ~WDF_WLABEL; 1332 return 0; 1333 1334 case DIOCGDEFLABEL: 1335 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1336 return 0; 1337 #ifdef __HAVE_OLD_DISKLABEL 1338 case ODIOCGDEFLABEL: 1339 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1340 if (newlabel == NULL) 1341 return EIO; 1342 wdgetdefaultlabel(wd, newlabel); 1343 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1344 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1345 else 1346 error = ENOTTY; 1347 free(newlabel, M_TEMP); 1348 return error; 1349 #endif 1350 1351 #ifdef notyet 1352 case DIOCWFORMAT: 1353 if ((flag & FWRITE) == 0) 1354 return EBADF; 1355 { 1356 register struct format_op *fop; 1357 struct iovec aiov; 1358 struct uio auio; 1359 1360 fop = (struct format_op *)addr; 1361 aiov.iov_base = fop->df_buf; 1362 aiov.iov_len = fop->df_count; 1363 auio.uio_iov = &aiov; 1364 auio.uio_iovcnt = 1; 1365 auio.uio_resid = fop->df_count; 1366 auio.uio_offset = 1367 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1368 auio.uio_vmspace = l->l_proc->p_vmspace; 1369 error = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1370 &auio); 1371 fop->df_count -= auio.uio_resid; 1372 fop->df_reg[0] = wdc->sc_status; 1373 fop->df_reg[1] = wdc->sc_error; 1374 return error; 1375 } 1376 #endif 1377 case DIOCGCACHE: 1378 return wd_getcache(wd, (int *)addr); 1379 1380 case DIOCSCACHE: 1381 return wd_setcache(wd, *(int *)addr); 1382 1383 case DIOCCACHESYNC: 1384 return wd_flushcache(wd, AT_WAIT); 1385 1386 case ATAIOCCOMMAND: 1387 /* 1388 * Make sure this command is (relatively) safe first 1389 */ 1390 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1391 (flag & FWRITE) == 0) 1392 return (EBADF); 1393 { 1394 struct wd_ioctl *wi; 1395 atareq_t *atareq = (atareq_t *) addr; 1396 int error1; 1397 1398 wi = wi_get(); 1399 wi->wi_softc = wd; 1400 wi->wi_atareq = *atareq; 1401 1402 if (atareq->datalen && atareq->flags & 1403 (ATACMD_READ | ATACMD_WRITE)) { 1404 void *tbuf; 1405 if (atareq->datalen < DEV_BSIZE 1406 && atareq->command == WDCC_IDENTIFY) { 1407 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1408 wi->wi_iov.iov_base = tbuf; 1409 wi->wi_iov.iov_len = DEV_BSIZE; 1410 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1411 } else { 1412 tbuf = NULL; 1413 wi->wi_iov.iov_base = atareq->databuf; 1414 wi->wi_iov.iov_len = atareq->datalen; 1415 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1416 } 1417 wi->wi_uio.uio_iov = &wi->wi_iov; 1418 wi->wi_uio.uio_iovcnt = 1; 1419 wi->wi_uio.uio_resid = atareq->datalen; 1420 wi->wi_uio.uio_offset = 0; 1421 wi->wi_uio.uio_rw = 1422 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1423 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1424 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1425 wdminphys, &wi->wi_uio); 1426 if (tbuf != NULL && error1 == 0) { 1427 error1 = copyout(tbuf, atareq->databuf, 1428 atareq->datalen); 1429 free(tbuf, M_TEMP); 1430 } 1431 } else { 1432 /* No need to call physio if we don't have any 1433 user data */ 1434 wi->wi_bp.b_flags = 0; 1435 wi->wi_bp.b_data = 0; 1436 wi->wi_bp.b_bcount = 0; 1437 wi->wi_bp.b_dev = 0; 1438 wi->wi_bp.b_proc = l->l_proc; 1439 wdioctlstrategy(&wi->wi_bp); 1440 error1 = wi->wi_bp.b_error; 1441 } 1442 *atareq = wi->wi_atareq; 1443 wi_free(wi); 1444 return(error1); 1445 } 1446 1447 case DIOCAWEDGE: 1448 { 1449 struct dkwedge_info *dkw = (void *) addr; 1450 1451 if ((flag & FWRITE) == 0) 1452 return (EBADF); 1453 1454 /* If the ioctl happens here, the parent is us. */ 1455 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1456 return (dkwedge_add(dkw)); 1457 } 1458 1459 case DIOCDWEDGE: 1460 { 1461 struct dkwedge_info *dkw = (void *) addr; 1462 1463 if ((flag & FWRITE) == 0) 1464 return (EBADF); 1465 1466 /* If the ioctl happens here, the parent is us. */ 1467 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1468 return (dkwedge_del(dkw)); 1469 } 1470 1471 case DIOCLWEDGES: 1472 { 1473 struct dkwedge_list *dkwl = (void *) addr; 1474 1475 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1476 } 1477 1478 case DIOCGSTRATEGY: 1479 { 1480 struct disk_strategy *dks = (void *)addr; 1481 1482 s = splbio(); 1483 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1484 sizeof(dks->dks_name)); 1485 splx(s); 1486 dks->dks_paramlen = 0; 1487 1488 return 0; 1489 } 1490 1491 case DIOCSSTRATEGY: 1492 { 1493 struct disk_strategy *dks = (void *)addr; 1494 struct bufq_state *new; 1495 struct bufq_state *old; 1496 1497 if ((flag & FWRITE) == 0) { 1498 return EBADF; 1499 } 1500 if (dks->dks_param != NULL) { 1501 return EINVAL; 1502 } 1503 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1504 error = bufq_alloc(&new, dks->dks_name, 1505 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1506 if (error) { 1507 return error; 1508 } 1509 s = splbio(); 1510 old = wd->sc_q; 1511 bufq_move(new, old); 1512 wd->sc_q = new; 1513 splx(s); 1514 bufq_free(old); 1515 1516 return 0; 1517 } 1518 1519 default: 1520 return ENOTTY; 1521 } 1522 1523 #ifdef DIAGNOSTIC 1524 panic("wdioctl: impossible"); 1525 #endif 1526 } 1527 1528 #ifdef B_FORMAT 1529 int 1530 wdformat(struct buf *bp) 1531 { 1532 1533 bp->b_flags |= B_FORMAT; 1534 return wdstrategy(bp); 1535 } 1536 #endif 1537 1538 int 1539 wdsize(dev_t dev) 1540 { 1541 struct wd_softc *wd; 1542 int part, omask; 1543 int size; 1544 1545 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1546 1547 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1548 if (wd == NULL) 1549 return (-1); 1550 1551 part = WDPART(dev); 1552 omask = wd->sc_dk.dk_openmask & (1 << part); 1553 1554 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1555 return (-1); 1556 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1557 size = -1; 1558 else 1559 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1560 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1561 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1562 return (-1); 1563 return (size); 1564 } 1565 1566 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1567 static int wddoingadump = 0; 1568 static int wddumprecalibrated = 0; 1569 1570 /* 1571 * Dump core after a system crash. 1572 */ 1573 int 1574 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1575 { 1576 struct wd_softc *wd; /* disk unit to do the I/O */ 1577 struct disklabel *lp; /* disk's disklabel */ 1578 int part, err; 1579 int nblks; /* total number of sectors left to write */ 1580 1581 /* Check if recursive dump; if so, punt. */ 1582 if (wddoingadump) 1583 return EFAULT; 1584 wddoingadump = 1; 1585 1586 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1587 if (wd == NULL) 1588 return (ENXIO); 1589 1590 part = WDPART(dev); 1591 1592 /* Convert to disk sectors. Request must be a multiple of size. */ 1593 lp = wd->sc_dk.dk_label; 1594 if ((size % lp->d_secsize) != 0) 1595 return EFAULT; 1596 nblks = size / lp->d_secsize; 1597 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1598 1599 /* Check transfer bounds against partition size. */ 1600 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1601 return EINVAL; 1602 1603 /* Offset block number to start of partition. */ 1604 blkno += lp->d_partitions[part].p_offset; 1605 1606 /* Recalibrate, if first dump transfer. */ 1607 if (wddumprecalibrated == 0) { 1608 wddumprecalibrated = 1; 1609 (*wd->atabus->ata_reset_drive)(wd->drvp, 1610 AT_POLL | AT_RST_EMERG); 1611 wd->drvp->state = RESET; 1612 } 1613 1614 wd->sc_bp = NULL; 1615 wd->sc_wdc_bio.blkno = blkno; 1616 wd->sc_wdc_bio.flags = ATA_POLL; 1617 if (wd->sc_flags & WDF_LBA48 && 1618 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1619 wd->sc_wdc_bio.flags |= ATA_LBA48; 1620 if (wd->sc_flags & WDF_LBA) 1621 wd->sc_wdc_bio.flags |= ATA_LBA; 1622 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1623 wd->sc_wdc_bio.databuf = va; 1624 #ifndef WD_DUMP_NOT_TRUSTED 1625 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1626 case ATACMD_TRY_AGAIN: 1627 panic("wddump: try again"); 1628 break; 1629 case ATACMD_QUEUED: 1630 panic("wddump: polled command has been queued"); 1631 break; 1632 case ATACMD_COMPLETE: 1633 break; 1634 default: 1635 panic("wddump: unknown atacmd code %d", err); 1636 } 1637 switch(err = wd->sc_wdc_bio.error) { 1638 case TIMEOUT: 1639 printf("wddump: device timed out"); 1640 err = EIO; 1641 break; 1642 case ERR_DF: 1643 printf("wddump: drive fault"); 1644 err = EIO; 1645 break; 1646 case ERR_DMA: 1647 printf("wddump: DMA error"); 1648 err = EIO; 1649 break; 1650 case ERROR: 1651 printf("wddump: "); 1652 wdperror(wd); 1653 err = EIO; 1654 break; 1655 case NOERROR: 1656 err = 0; 1657 break; 1658 default: 1659 panic("wddump: unknown error type %d", err); 1660 } 1661 if (err != 0) { 1662 printf("\n"); 1663 return err; 1664 } 1665 #else /* WD_DUMP_NOT_TRUSTED */ 1666 /* Let's just talk about this first... */ 1667 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1668 unit, va, cylin, head, sector); 1669 delay(500 * 1000); /* half a second */ 1670 #endif 1671 1672 wddoingadump = 0; 1673 return 0; 1674 } 1675 1676 #ifdef HAS_BAD144_HANDLING 1677 /* 1678 * Internalize the bad sector table. 1679 */ 1680 void 1681 bad144intern(struct wd_softc *wd) 1682 { 1683 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1684 struct disklabel *lp = wd->sc_dk.dk_label; 1685 int i = 0; 1686 1687 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1688 1689 for (; i < NBT_BAD; i++) { 1690 if (bt->bt_bad[i].bt_cyl == 0xffff) 1691 break; 1692 wd->sc_badsect[i] = 1693 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1694 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1695 (bt->bt_bad[i].bt_trksec & 0xff); 1696 } 1697 for (; i < NBT_BAD+1; i++) 1698 wd->sc_badsect[i] = -1; 1699 } 1700 #endif 1701 1702 static void 1703 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1704 { 1705 prop_dictionary_t disk_info, odisk_info, geom; 1706 const char *cp; 1707 1708 disk_info = prop_dictionary_create(); 1709 1710 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1711 cp = "ST506"; 1712 else { 1713 /* XXX Should have a case for ATA here, too. */ 1714 cp = "ESDI"; 1715 } 1716 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1717 1718 geom = prop_dictionary_create(); 1719 1720 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1721 1722 prop_dictionary_set_uint32(geom, "sector-size", 1723 DEV_BSIZE /* XXX 512? */); 1724 1725 prop_dictionary_set_uint16(geom, "sectors-per-track", 1726 wd->sc_params.atap_sectors); 1727 1728 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1729 wd->sc_params.atap_heads); 1730 1731 if (wd->sc_flags & WDF_LBA) 1732 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1733 wd->sc_capacity / 1734 (wd->sc_params.atap_heads * 1735 wd->sc_params.atap_sectors)); 1736 else 1737 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1738 wd->sc_params.atap_cylinders); 1739 1740 prop_dictionary_set(disk_info, "geometry", geom); 1741 prop_object_release(geom); 1742 1743 prop_dictionary_set(device_properties(wd->sc_dev), 1744 "disk-info", disk_info); 1745 1746 /* 1747 * Don't release disk_info here; we keep a reference to it. 1748 * disk_detach() will release it when we go away. 1749 */ 1750 1751 odisk_info = wd->sc_dk.dk_info; 1752 wd->sc_dk.dk_info = disk_info; 1753 if (odisk_info) 1754 prop_object_release(odisk_info); 1755 } 1756 1757 int 1758 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1759 { 1760 1761 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1762 case CMD_AGAIN: 1763 return 1; 1764 case CMD_ERR: 1765 /* 1766 * We `know' there's a drive here; just assume it's old. 1767 * This geometry is only used to read the MBR and print a 1768 * (false) attach message. 1769 */ 1770 strncpy(params->atap_model, "ST506", 1771 sizeof params->atap_model); 1772 params->atap_config = ATA_CFG_FIXED; 1773 params->atap_cylinders = 1024; 1774 params->atap_heads = 8; 1775 params->atap_sectors = 17; 1776 params->atap_multi = 1; 1777 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1778 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1779 /* FALLTHROUGH */ 1780 case CMD_OK: 1781 wd_params_to_properties(wd, params); 1782 return 0; 1783 default: 1784 panic("wd_get_params: bad return code from ata_get_params"); 1785 /* NOTREACHED */ 1786 } 1787 } 1788 1789 int 1790 wd_getcache(struct wd_softc *wd, int *bitsp) 1791 { 1792 struct ataparams params; 1793 1794 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1795 return EIO; 1796 if (params.atap_cmd_set1 == 0x0000 || 1797 params.atap_cmd_set1 == 0xffff || 1798 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1799 *bitsp = 0; 1800 return 0; 1801 } 1802 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1803 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1804 *bitsp |= DKCACHE_WRITE; 1805 1806 return 0; 1807 } 1808 1809 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1810 1811 int 1812 wd_setcache(struct wd_softc *wd, int bits) 1813 { 1814 struct ataparams params; 1815 struct ata_command ata_c; 1816 1817 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1818 return EIO; 1819 1820 if (params.atap_cmd_set1 == 0x0000 || 1821 params.atap_cmd_set1 == 0xffff || 1822 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1823 return EOPNOTSUPP; 1824 1825 if ((bits & DKCACHE_READ) == 0 || 1826 (bits & DKCACHE_SAVE) != 0) 1827 return EOPNOTSUPP; 1828 1829 memset(&ata_c, 0, sizeof(struct ata_command)); 1830 ata_c.r_command = SET_FEATURES; 1831 ata_c.r_st_bmask = 0; 1832 ata_c.r_st_pmask = 0; 1833 ata_c.timeout = 30000; /* 30s timeout */ 1834 ata_c.flags = AT_WAIT; 1835 if (bits & DKCACHE_WRITE) 1836 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1837 else 1838 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1839 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1840 aprint_error_dev(wd->sc_dev, 1841 "wd_setcache command not complete\n"); 1842 return EIO; 1843 } 1844 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1845 char sbuf[sizeof(at_errbits) + 64]; 1846 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1847 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1848 return EIO; 1849 } 1850 return 0; 1851 } 1852 1853 static int 1854 wd_standby(struct wd_softc *wd, int flags) 1855 { 1856 struct ata_command ata_c; 1857 1858 memset(&ata_c, 0, sizeof(struct ata_command)); 1859 ata_c.r_command = WDCC_STANDBY_IMMED; 1860 ata_c.r_st_bmask = WDCS_DRDY; 1861 ata_c.r_st_pmask = WDCS_DRDY; 1862 ata_c.flags = flags; 1863 ata_c.timeout = 30000; /* 30s timeout */ 1864 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1865 aprint_error_dev(wd->sc_dev, 1866 "standby immediate command didn't complete\n"); 1867 return EIO; 1868 } 1869 if (ata_c.flags & AT_ERROR) { 1870 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1871 return ENODEV; 1872 } 1873 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1874 char sbuf[sizeof(at_errbits) + 64]; 1875 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1876 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1877 return EIO; 1878 } 1879 return 0; 1880 } 1881 1882 int 1883 wd_flushcache(struct wd_softc *wd, int flags) 1884 { 1885 struct ata_command ata_c; 1886 1887 /* 1888 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1889 * only ATA-2 and still support it. 1890 */ 1891 if (wd->drvp->ata_vers < 4 && 1892 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1893 wd->sc_params.atap_cmd_set2 == 0xffff)) 1894 return ENODEV; 1895 memset(&ata_c, 0, sizeof(struct ata_command)); 1896 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1897 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1898 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1899 else 1900 ata_c.r_command = WDCC_FLUSHCACHE; 1901 ata_c.r_st_bmask = WDCS_DRDY; 1902 ata_c.r_st_pmask = WDCS_DRDY; 1903 ata_c.flags = flags; 1904 ata_c.timeout = 30000; /* 30s timeout */ 1905 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1906 aprint_error_dev(wd->sc_dev, 1907 "flush cache command didn't complete\n"); 1908 return EIO; 1909 } 1910 if (ata_c.flags & AT_ERROR) { 1911 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1912 return ENODEV; 1913 } 1914 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1915 char sbuf[sizeof(at_errbits) + 64]; 1916 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1917 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1918 sbuf); 1919 return EIO; 1920 } 1921 return 0; 1922 } 1923 1924 bool 1925 wd_shutdown(device_t dev, int how) 1926 { 1927 struct wd_softc *wd = device_private(dev); 1928 1929 /* the adapter needs to be enabled */ 1930 if (wd->atabus->ata_addref(wd->drvp)) 1931 return true; /* no need to complain */ 1932 1933 wd_flushcache(wd, AT_POLL); 1934 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1935 wd_standby(wd, AT_POLL); 1936 return true; 1937 } 1938 1939 /* 1940 * Allocate space for a ioctl queue structure. Mostly taken from 1941 * scsipi_ioctl.c 1942 */ 1943 struct wd_ioctl * 1944 wi_get(void) 1945 { 1946 struct wd_ioctl *wi; 1947 int s; 1948 1949 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1950 buf_init(&wi->wi_bp); 1951 s = splbio(); 1952 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1953 splx(s); 1954 return (wi); 1955 } 1956 1957 /* 1958 * Free an ioctl structure and remove it from our list 1959 */ 1960 1961 void 1962 wi_free(struct wd_ioctl *wi) 1963 { 1964 int s; 1965 1966 s = splbio(); 1967 LIST_REMOVE(wi, wi_list); 1968 splx(s); 1969 buf_destroy(&wi->wi_bp); 1970 free(wi, M_TEMP); 1971 } 1972 1973 /* 1974 * Find a wd_ioctl structure based on the struct buf. 1975 */ 1976 1977 struct wd_ioctl * 1978 wi_find(struct buf *bp) 1979 { 1980 struct wd_ioctl *wi; 1981 int s; 1982 1983 s = splbio(); 1984 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1985 if (bp == &wi->wi_bp) 1986 break; 1987 splx(s); 1988 return (wi); 1989 } 1990 1991 /* 1992 * Ioctl pseudo strategy routine 1993 * 1994 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1995 * happens here is: 1996 * 1997 * - wdioctl() queues a wd_ioctl structure. 1998 * 1999 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2000 * user space I/O is required. If physio() is called, physio() eventually 2001 * calls wdioctlstrategy(). 2002 * 2003 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2004 * to perform the actual command 2005 * 2006 * The reason for the use of the pseudo strategy routine is because 2007 * when doing I/O to/from user space, physio _really_ wants to be in 2008 * the loop. We could put the entire buffer into the ioctl request 2009 * structure, but that won't scale if we want to do things like download 2010 * microcode. 2011 */ 2012 2013 void 2014 wdioctlstrategy(struct buf *bp) 2015 { 2016 struct wd_ioctl *wi; 2017 struct ata_command ata_c; 2018 int error = 0; 2019 2020 wi = wi_find(bp); 2021 if (wi == NULL) { 2022 printf("wdioctlstrategy: " 2023 "No matching ioctl request found in queue\n"); 2024 error = EINVAL; 2025 goto bad; 2026 } 2027 2028 memset(&ata_c, 0, sizeof(ata_c)); 2029 2030 /* 2031 * Abort if physio broke up the transfer 2032 */ 2033 2034 if (bp->b_bcount != wi->wi_atareq.datalen) { 2035 printf("physio split wd ioctl request... cannot proceed\n"); 2036 error = EIO; 2037 goto bad; 2038 } 2039 2040 /* 2041 * Abort if we didn't get a buffer size that was a multiple of 2042 * our sector size (or was larger than NBBY) 2043 */ 2044 2045 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2046 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2047 (1 << NBBY)) { 2048 error = EINVAL; 2049 goto bad; 2050 } 2051 2052 /* 2053 * Make sure a timeout was supplied in the ioctl request 2054 */ 2055 2056 if (wi->wi_atareq.timeout == 0) { 2057 error = EINVAL; 2058 goto bad; 2059 } 2060 2061 if (wi->wi_atareq.flags & ATACMD_READ) 2062 ata_c.flags |= AT_READ; 2063 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2064 ata_c.flags |= AT_WRITE; 2065 2066 if (wi->wi_atareq.flags & ATACMD_READREG) 2067 ata_c.flags |= AT_READREG; 2068 2069 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 2070 ata_c.flags |= AT_LBA; 2071 2072 ata_c.flags |= AT_WAIT; 2073 2074 ata_c.timeout = wi->wi_atareq.timeout; 2075 ata_c.r_command = wi->wi_atareq.command; 2076 ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2077 (wi->wi_atareq.cylinder << 8) | 2078 wi->wi_atareq.sec_num; 2079 ata_c.r_count = wi->wi_atareq.sec_count; 2080 ata_c.r_features = wi->wi_atareq.features; 2081 ata_c.r_st_bmask = WDCS_DRDY; 2082 ata_c.r_st_pmask = WDCS_DRDY; 2083 ata_c.data = wi->wi_bp.b_data; 2084 ata_c.bcount = wi->wi_bp.b_bcount; 2085 2086 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2087 != ATACMD_COMPLETE) { 2088 wi->wi_atareq.retsts = ATACMD_ERROR; 2089 goto bad; 2090 } 2091 2092 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2093 if (ata_c.flags & AT_ERROR) { 2094 wi->wi_atareq.retsts = ATACMD_ERROR; 2095 wi->wi_atareq.error = ata_c.r_error; 2096 } else if (ata_c.flags & AT_DF) 2097 wi->wi_atareq.retsts = ATACMD_DF; 2098 else 2099 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2100 } else { 2101 wi->wi_atareq.retsts = ATACMD_OK; 2102 if (wi->wi_atareq.flags & ATACMD_READREG) { 2103 wi->wi_atareq.command = ata_c.r_status; 2104 wi->wi_atareq.features = ata_c.r_error; 2105 wi->wi_atareq.sec_count = ata_c.r_count; 2106 wi->wi_atareq.sec_num = ata_c.r_lba & 0xff; 2107 wi->wi_atareq.head = (ata_c.r_device & 0xf0) | 2108 ((ata_c.r_lba >> 24) & 0x0f); 2109 wi->wi_atareq.cylinder = (ata_c.r_lba >> 8) & 0xffff; 2110 wi->wi_atareq.error = ata_c.r_error; 2111 } 2112 } 2113 2114 bp->b_error = 0; 2115 biodone(bp); 2116 return; 2117 bad: 2118 bp->b_error = error; 2119 biodone(bp); 2120 } 2121
Indexes created Sun Sep 28 16:09:52 GMT 2025