wd.c revision 1.360
1 /* $NetBSD: wd.c,v 1.360 2008/03/18 20:46:36 cube 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.360 2008/03/18 20:46:36 cube Exp $"); 70 71 #include "opt_ata.h" 72 73 #include "rnd.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/conf.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/ioctl.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/uio.h> 85 #include <sys/malloc.h> 86 #include <sys/device.h> 87 #include <sys/disklabel.h> 88 #include <sys/disk.h> 89 #include <sys/syslog.h> 90 #include <sys/proc.h> 91 #include <sys/reboot.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <sys/intr.h> 98 #include <sys/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #include <prop/proplib.h> 108 109 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 110 111 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 112 #define WDIORETRIES 5 /* number of retries before giving up */ 113 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 114 115 #define WDUNIT(dev) DISKUNIT(dev) 116 #define WDPART(dev) DISKPART(dev) 117 #define WDMINOR(unit, part) DISKMINOR(unit, part) 118 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 119 120 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 121 122 #define DEBUG_INTR 0x01 123 #define DEBUG_XFERS 0x02 124 #define DEBUG_STATUS 0x04 125 #define DEBUG_FUNCS 0x08 126 #define DEBUG_PROBE 0x10 127 #ifdef ATADEBUG 128 int wdcdebug_wd_mask = 0x0; 129 #define ATADEBUG_PRINT(args, level) \ 130 if (wdcdebug_wd_mask & (level)) \ 131 printf args 132 #else 133 #define ATADEBUG_PRINT(args, level) 134 #endif 135 136 int wdprobe(struct device *, struct cfdata *, void *); 137 void wdattach(struct device *, struct device *, void *); 138 int wddetach(struct device *, int); 139 int wdactivate(struct device *, enum devact); 140 int wdprint(void *, char *); 141 void wdperror(const struct wd_softc *); 142 143 static bool wd_suspend(device_t PMF_FN_PROTO); 144 static int wd_standby(struct wd_softc *, int); 145 146 CFATTACH_DECL_NEW(wd, sizeof(struct wd_softc), 147 wdprobe, wdattach, wddetach, wdactivate); 148 149 extern struct cfdriver wd_cd; 150 151 dev_type_open(wdopen); 152 dev_type_close(wdclose); 153 dev_type_read(wdread); 154 dev_type_write(wdwrite); 155 dev_type_ioctl(wdioctl); 156 dev_type_strategy(wdstrategy); 157 dev_type_dump(wddump); 158 dev_type_size(wdsize); 159 160 const struct bdevsw wd_bdevsw = { 161 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 162 }; 163 164 const struct cdevsw wd_cdevsw = { 165 wdopen, wdclose, wdread, wdwrite, wdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 /* 170 * Glue necessary to hook WDCIOCCOMMAND into physio 171 */ 172 173 struct wd_ioctl { 174 LIST_ENTRY(wd_ioctl) wi_list; 175 struct buf wi_bp; 176 struct uio wi_uio; 177 struct iovec wi_iov; 178 atareq_t wi_atareq; 179 struct wd_softc *wi_softc; 180 }; 181 182 LIST_HEAD(, wd_ioctl) wi_head; 183 184 struct wd_ioctl *wi_find(struct buf *); 185 void wi_free(struct wd_ioctl *); 186 struct wd_ioctl *wi_get(void); 187 void wdioctlstrategy(struct buf *); 188 189 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 190 void wdgetdisklabel(struct wd_softc *); 191 void wdstart(void *); 192 void __wdstart(struct wd_softc*, struct buf *); 193 void wdrestart(void *); 194 void wddone(void *); 195 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 196 int wd_flushcache(struct wd_softc *, int); 197 bool wd_shutdown(device_t, int); 198 199 int wd_getcache(struct wd_softc *, int *); 200 int wd_setcache(struct wd_softc *, int); 201 202 struct dkdriver wddkdriver = { wdstrategy, minphys }; 203 204 #ifdef HAS_BAD144_HANDLING 205 static void bad144intern(struct wd_softc *); 206 #endif 207 208 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 209 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 210 211 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 212 213 /* 214 * Quirk table for IDE drives. Put more-specific matches first, since 215 * a simple globbing routine is used for matching. 216 */ 217 static const struct wd_quirk { 218 const char *wdq_match; /* inquiry pattern to match */ 219 int wdq_quirks; /* drive quirks */ 220 } wd_quirk_table[] = { 221 /* 222 * Some Seagate S-ATA drives have a PHY which can get confused 223 * with the way data is packetized by some S-ATA controllers. 224 * 225 * The work-around is to split in two any write transfer whose 226 * sector count % 15 == 1 (assuming 512 byte sectors). 227 * 228 * XXX This is an incomplete list. There are at least a couple 229 * XXX more model numbers. If you have trouble with such transfers 230 * XXX (8K is the most common) on Seagate S-ATA drives, please 231 * XXX notify thorpej (at) NetBSD.org. 232 */ 233 { "ST3120023AS", 234 WD_QUIRK_SPLIT_MOD15_WRITE }, 235 { "ST380023AS", 236 WD_QUIRK_SPLIT_MOD15_WRITE }, 237 238 /* 239 * These seagate drives seems to have issue addressing sector 0xfffffff 240 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 241 * LBA48 242 * Note that we can't just change the code to always use LBA48 for 243 * sector 0xfffffff, because this would break valid and working 244 * setups using LBA48 drives on non-LBA48-capable controllers 245 * (and it's hard to get a list of such controllers) 246 */ 247 { "ST3160021A*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { "ST3160811A*", 250 WD_QUIRK_FORCE_LBA48 }, 251 { "ST3160812A*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { "ST3160023A*", 254 WD_QUIRK_FORCE_LBA48 }, 255 { "ST3160827A*", 256 WD_QUIRK_FORCE_LBA48 }, 257 /* Attempt to catch all seagate drives larger than 200GB */ 258 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 259 WD_QUIRK_FORCE_LBA48 }, 260 { "ST3[1-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 261 WD_QUIRK_FORCE_LBA48 }, 262 { NULL, 263 0 } 264 }; 265 266 static const struct wd_quirk * 267 wd_lookup_quirks(const char *name) 268 { 269 const struct wd_quirk *wdq; 270 const char *estr; 271 272 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 273 /* 274 * We only want exact matches (which include matches 275 * against globbing characters). 276 */ 277 if (pmatch(name, wdq->wdq_match, &estr) == 2) 278 return (wdq); 279 } 280 return (NULL); 281 } 282 283 int 284 wdprobe(struct device *parent, struct cfdata *match, void *aux) 285 { 286 struct ata_device *adev = aux; 287 288 if (adev == NULL) 289 return 0; 290 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 291 return 0; 292 293 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 294 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 295 return 0; 296 return 1; 297 } 298 299 void 300 wdattach(struct device *parent, struct device *self, void *aux) 301 { 302 struct wd_softc *wd = device_private(self); 303 struct ata_device *adev= aux; 304 int i, blank; 305 char tbuf[41], pbuf[9], c, *p, *q; 306 const struct wd_quirk *wdq; 307 308 wd->sc_dev = self; 309 310 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 311 callout_init(&wd->sc_restart_ch, 0); 312 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 313 #ifdef WD_SOFTBADSECT 314 SLIST_INIT(&wd->sc_bslist); 315 #endif 316 wd->atabus = adev->adev_bustype; 317 wd->openings = adev->adev_openings; 318 wd->drvp = adev->adev_drv_data; 319 320 wd->drvp->drv_done = wddone; 321 wd->drvp->drv_softc = wd->sc_dev; 322 323 aprint_naive("\n"); 324 325 /* read our drive info */ 326 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 327 aprint_error("\n%s: IDENTIFY failed\n", device_xname(self)); 328 return; 329 } 330 331 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 332 i < sizeof(wd->sc_params.atap_model); i++) { 333 c = *p++; 334 if (c == '\0') 335 break; 336 if (c != ' ') { 337 if (blank) { 338 *q++ = ' '; 339 blank = 0; 340 } 341 *q++ = c; 342 } else 343 blank = 1; 344 } 345 *q++ = '\0'; 346 347 aprint_normal(": <%s>\n", tbuf); 348 349 wdq = wd_lookup_quirks(tbuf); 350 if (wdq != NULL) 351 wd->sc_quirks = wdq->wdq_quirks; 352 353 if (wd->sc_quirks != 0) { 354 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 355 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 356 sbuf, sizeof(sbuf)); 357 aprint_normal_dev(self, "quirks %s\n", sbuf); 358 } 359 360 if ((wd->sc_params.atap_multi & 0xff) > 1) { 361 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 362 } else { 363 wd->sc_multi = 1; 364 } 365 366 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 367 wd->sc_multi); 368 369 /* 48-bit LBA addressing */ 370 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 371 wd->sc_flags |= WDF_LBA48; 372 373 /* Prior to ATA-4, LBA was optional. */ 374 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 375 wd->sc_flags |= WDF_LBA; 376 #if 0 377 /* ATA-4 requires LBA. */ 378 if (wd->sc_params.atap_ataversion != 0xffff && 379 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 380 wd->sc_flags |= WDF_LBA; 381 #endif 382 383 if ((wd->sc_flags & WDF_LBA48) != 0) { 384 aprint_verbose(" LBA48 addressing\n"); 385 wd->sc_capacity = 386 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 387 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 388 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 389 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 390 } else if ((wd->sc_flags & WDF_LBA) != 0) { 391 aprint_verbose(" LBA addressing\n"); 392 wd->sc_capacity = 393 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 394 wd->sc_params.atap_capacity[0]; 395 } else { 396 aprint_verbose(" chs addressing\n"); 397 wd->sc_capacity = 398 wd->sc_params.atap_cylinders * 399 wd->sc_params.atap_heads * 400 wd->sc_params.atap_sectors; 401 } 402 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 403 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 404 "%d bytes/sect x %llu sectors\n", 405 pbuf, 406 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 407 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 408 wd->sc_params.atap_cylinders, 409 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 410 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 411 412 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 413 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 414 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 415 /* 416 * Initialize and attach the disk structure. 417 */ 418 /* we fill in dk_info later */ 419 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 420 disk_attach(&wd->sc_dk); 421 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 422 #if NRND > 0 423 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 424 RND_TYPE_DISK, 0); 425 #endif 426 427 /* Discover wedges on this disk. */ 428 dkwedge_discover(&wd->sc_dk); 429 430 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 431 aprint_error_dev(self, "couldn't establish power handler\n"); 432 } 433 434 static bool 435 wd_suspend(device_t dv PMF_FN_ARGS) 436 { 437 struct wd_softc *sc = device_private(dv); 438 439 wd_flushcache(sc, AT_WAIT); 440 wd_standby(sc, AT_WAIT); 441 return true; 442 } 443 444 int 445 wdactivate(struct device *self, enum devact act) 446 { 447 int rv = 0; 448 449 switch (act) { 450 case DVACT_ACTIVATE: 451 rv = EOPNOTSUPP; 452 break; 453 454 case DVACT_DEACTIVATE: 455 /* 456 * Nothing to do; we key off the device's DVF_ACTIVATE. 457 */ 458 break; 459 } 460 return (rv); 461 } 462 463 int 464 wddetach(struct device *self, int flags) 465 { 466 struct wd_softc *sc = device_private(self); 467 int s, bmaj, cmaj, i, mn; 468 469 /* locate the major number */ 470 bmaj = bdevsw_lookup_major(&wd_bdevsw); 471 cmaj = cdevsw_lookup_major(&wd_cdevsw); 472 473 /* Nuke the vnodes for any open instances. */ 474 for (i = 0; i < MAXPARTITIONS; i++) { 475 mn = WDMINOR(device_unit(self), i); 476 vdevgone(bmaj, mn, mn, VBLK); 477 vdevgone(cmaj, mn, mn, VCHR); 478 } 479 480 /* Delete all of our wedges. */ 481 dkwedge_delall(&sc->sc_dk); 482 483 s = splbio(); 484 485 /* Kill off any queued buffers. */ 486 bufq_drain(sc->sc_q); 487 488 bufq_free(sc->sc_q); 489 sc->atabus->ata_killpending(sc->drvp); 490 491 splx(s); 492 493 /* Detach disk. */ 494 disk_detach(&sc->sc_dk); 495 496 #ifdef WD_SOFTBADSECT 497 /* Clean out the bad sector list */ 498 while (!SLIST_EMPTY(&sc->sc_bslist)) { 499 void *head = SLIST_FIRST(&sc->sc_bslist); 500 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 501 free(head, M_TEMP); 502 } 503 sc->sc_bscount = 0; 504 #endif 505 506 pmf_device_deregister(self); 507 508 #if NRND > 0 509 /* Unhook the entropy source. */ 510 rnd_detach_source(&sc->rnd_source); 511 #endif 512 513 sc->drvp->drive_flags = 0; /* no drive any more here */ 514 515 return (0); 516 } 517 518 /* 519 * Read/write routine for a buffer. Validates the arguments and schedules the 520 * transfer. Does not wait for the transfer to complete. 521 */ 522 void 523 wdstrategy(struct buf *bp) 524 { 525 struct wd_softc *wd = 526 device_private(device_lookup(&wd_cd, WDUNIT(bp->b_dev))); 527 struct disklabel *lp = wd->sc_dk.dk_label; 528 daddr_t blkno; 529 int s; 530 531 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 532 DEBUG_XFERS); 533 534 /* Valid request? */ 535 if (bp->b_blkno < 0 || 536 (bp->b_bcount % lp->d_secsize) != 0 || 537 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 538 bp->b_error = EINVAL; 539 goto done; 540 } 541 542 /* If device invalidated (e.g. media change, door open), error. */ 543 if ((wd->sc_flags & WDF_LOADED) == 0) { 544 bp->b_error = EIO; 545 goto done; 546 } 547 548 /* If it's a null transfer, return immediately. */ 549 if (bp->b_bcount == 0) 550 goto done; 551 552 /* 553 * Do bounds checking, adjust transfer. if error, process. 554 * If end of partition, just return. 555 */ 556 if (WDPART(bp->b_dev) == RAW_PART) { 557 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 558 wd->sc_capacity) <= 0) 559 goto done; 560 } else { 561 if (bounds_check_with_label(&wd->sc_dk, bp, 562 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 563 goto done; 564 } 565 566 /* 567 * Now convert the block number to absolute and put it in 568 * terms of the device's logical block size. 569 */ 570 if (lp->d_secsize >= DEV_BSIZE) 571 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 572 else 573 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 574 575 if (WDPART(bp->b_dev) != RAW_PART) 576 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 577 578 bp->b_rawblkno = blkno; 579 580 #ifdef WD_SOFTBADSECT 581 /* 582 * If the transfer about to be attempted contains only a block that 583 * is known to be bad then return an error for the transfer without 584 * even attempting to start a transfer up under the premis that we 585 * will just end up doing more retries for a transfer that will end 586 * up failing again. 587 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 588 */ 589 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 590 struct disk_badsectors *dbs; 591 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 592 593 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 594 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 595 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 596 bp->b_error = EIO; 597 goto done; 598 } 599 } 600 #endif 601 602 /* Queue transfer on drive, activate drive and controller if idle. */ 603 s = splbio(); 604 BUFQ_PUT(wd->sc_q, bp); 605 wdstart(wd); 606 splx(s); 607 return; 608 done: 609 /* Toss transfer; we're done early. */ 610 bp->b_resid = bp->b_bcount; 611 biodone(bp); 612 } 613 614 /* 615 * Queue a drive for I/O. 616 */ 617 void 618 wdstart(void *arg) 619 { 620 struct wd_softc *wd = arg; 621 struct buf *bp = NULL; 622 623 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 624 DEBUG_XFERS); 625 while (wd->openings > 0) { 626 627 /* Is there a buf for us ? */ 628 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 629 return; 630 631 /* 632 * Make the command. First lock the device 633 */ 634 wd->openings--; 635 636 wd->retries = 0; 637 __wdstart(wd, bp); 638 } 639 } 640 641 static void 642 wd_split_mod15_write(struct buf *bp) 643 { 644 struct buf *obp = bp->b_private; 645 struct wd_softc *sc = 646 device_private(wd_cd.cd_devs[DISKUNIT(obp->b_dev)]); 647 648 if (__predict_false(bp->b_error != 0)) { 649 /* 650 * Propagate the error. If this was the first half of 651 * the original transfer, make sure to account for that 652 * in the residual. 653 */ 654 if (bp->b_data == obp->b_data) 655 bp->b_resid += bp->b_bcount; 656 goto done; 657 } 658 659 /* 660 * If this was the second half of the transfer, we're all done! 661 */ 662 if (bp->b_data != obp->b_data) 663 goto done; 664 665 /* 666 * Advance the pointer to the second half and issue that command 667 * using the same opening. 668 */ 669 bp->b_flags = obp->b_flags; 670 bp->b_oflags = obp->b_oflags; 671 bp->b_cflags = obp->b_cflags; 672 bp->b_data = (char *)bp->b_data + bp->b_bcount; 673 bp->b_blkno += (bp->b_bcount / 512); 674 bp->b_rawblkno += (bp->b_bcount / 512); 675 __wdstart(sc, bp); 676 return; 677 678 done: 679 obp->b_error = bp->b_error; 680 obp->b_resid = bp->b_resid; 681 putiobuf(bp); 682 biodone(obp); 683 sc->openings++; 684 /* wddone() will call wdstart() */ 685 } 686 687 void 688 __wdstart(struct wd_softc *wd, struct buf *bp) 689 { 690 691 /* 692 * Deal with the "split mod15 write" quirk. We just divide the 693 * transfer in two, doing the first half and then then second half 694 * with the same command opening. 695 * 696 * Note we MUST do this here, because we can't let insertion 697 * into the bufq cause the transfers to be re-merged. 698 */ 699 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 700 (bp->b_flags & B_READ) == 0 && 701 bp->b_bcount > 512 && 702 ((bp->b_bcount / 512) % 15) == 1)) { 703 struct buf *nbp; 704 705 /* already at splbio */ 706 nbp = getiobuf(NULL, false); 707 if (__predict_false(nbp == NULL)) { 708 /* No memory -- fail the iop. */ 709 bp->b_error = ENOMEM; 710 bp->b_resid = bp->b_bcount; 711 biodone(bp); 712 wd->openings++; 713 return; 714 } 715 716 nbp->b_error = 0; 717 nbp->b_proc = bp->b_proc; 718 nbp->b_dev = bp->b_dev; 719 720 nbp->b_bcount = bp->b_bcount / 2; 721 nbp->b_bufsize = bp->b_bcount / 2; 722 nbp->b_data = bp->b_data; 723 724 nbp->b_blkno = bp->b_blkno; 725 nbp->b_rawblkno = bp->b_rawblkno; 726 727 nbp->b_flags = bp->b_flags; 728 nbp->b_oflags = bp->b_oflags; 729 nbp->b_cflags = bp->b_cflags; 730 nbp->b_iodone = wd_split_mod15_write; 731 732 /* Put ptr to orig buf in b_private and use new buf */ 733 nbp->b_private = bp; 734 735 BIO_COPYPRIO(nbp, bp); 736 737 bp = nbp; 738 } 739 740 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 741 wd->sc_wdc_bio.blkdone =0; 742 wd->sc_bp = bp; 743 /* 744 * If we're retrying, retry in single-sector mode. This will give us 745 * the sector number of the problem, and will eventually allow the 746 * transfer to succeed. 747 */ 748 if (wd->retries >= WDIORETRIES_SINGLE) 749 wd->sc_wdc_bio.flags = ATA_SINGLE; 750 else 751 wd->sc_wdc_bio.flags = 0; 752 if (wd->sc_flags & WDF_LBA48 && 753 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 754 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 755 wd->sc_wdc_bio.flags |= ATA_LBA48; 756 if (wd->sc_flags & WDF_LBA) 757 wd->sc_wdc_bio.flags |= ATA_LBA; 758 if (bp->b_flags & B_READ) 759 wd->sc_wdc_bio.flags |= ATA_READ; 760 wd->sc_wdc_bio.bcount = bp->b_bcount; 761 wd->sc_wdc_bio.databuf = bp->b_data; 762 /* Instrumentation. */ 763 disk_busy(&wd->sc_dk); 764 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 765 case ATACMD_TRY_AGAIN: 766 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 767 break; 768 case ATACMD_QUEUED: 769 case ATACMD_COMPLETE: 770 break; 771 default: 772 panic("__wdstart: bad return code from ata_bio()"); 773 } 774 } 775 776 void 777 wddone(void *v) 778 { 779 struct wd_softc *wd = device_private(v); 780 struct buf *bp = wd->sc_bp; 781 const char *errmsg; 782 int do_perror = 0; 783 int nblks; 784 785 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 786 DEBUG_XFERS); 787 if (bp == NULL) 788 return; 789 bp->b_resid = wd->sc_wdc_bio.bcount; 790 switch (wd->sc_wdc_bio.error) { 791 case ERR_DMA: 792 errmsg = "DMA error"; 793 goto retry; 794 case ERR_DF: 795 errmsg = "device fault"; 796 goto retry; 797 case TIMEOUT: 798 errmsg = "device timeout"; 799 goto retry; 800 case ERR_RESET: 801 errmsg = "channel reset"; 802 goto retry2; 803 case ERROR: 804 /* Don't care about media change bits */ 805 if (wd->sc_wdc_bio.r_error != 0 && 806 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 807 goto noerror; 808 errmsg = "error"; 809 do_perror = 1; 810 if ((wd->sc_wdc_bio.r_error & (WDCE_IDNF | WDCE_ABRT)) && 811 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 812 nblks = wd->sc_wdc_bio.bcount / 813 wd->sc_dk.dk_label->d_secsize; 814 /* 815 * If we get a "id not found" when crossing the 816 * LBA48_THRESHOLD, and the drive is larger than 817 * 128GB, then we can assume the drive has the 818 * LBA48 bug and we switch to LBA48. 819 */ 820 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 821 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 822 wd->sc_capacity > LBA48_THRESHOLD + 1) { 823 errmsg = "LBA48 bug"; 824 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 825 do_perror = 0; 826 goto retry2; 827 } 828 } 829 retry: /* Just reset and retry. Can we do more ? */ 830 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 831 retry2: 832 diskerr(bp, "wd", errmsg, LOG_PRINTF, 833 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 834 if (wd->retries < WDIORETRIES) 835 printf(", retrying"); 836 printf("\n"); 837 if (do_perror) 838 wdperror(wd); 839 if (wd->retries < WDIORETRIES) { 840 wd->retries++; 841 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 842 wdrestart, wd); 843 return; 844 } 845 846 #ifdef WD_SOFTBADSECT 847 /* 848 * Not all errors indicate a failed block but those that do, 849 * put the block on the bad-block list for the device. Only 850 * do this for reads because the drive should do it for writes, 851 * itself, according to Manuel. 852 */ 853 if ((bp->b_flags & B_READ) && 854 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 855 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 856 struct disk_badsectors *dbs; 857 858 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 859 dbs->dbs_min = bp->b_rawblkno; 860 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 861 microtime(&dbs->dbs_failedat); 862 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 863 wd->sc_bscount++; 864 } 865 #endif 866 bp->b_error = EIO; 867 break; 868 case NOERROR: 869 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 870 aprint_error_dev(wd->sc_dev, 871 "soft error (corrected)\n"); 872 break; 873 case ERR_NODEV: 874 bp->b_error = EIO; 875 break; 876 } 877 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 878 (bp->b_flags & B_READ)); 879 #if NRND > 0 880 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 881 #endif 882 /* XXX Yuck, but we don't want to increment openings in this case */ 883 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 884 biodone(bp); 885 else { 886 biodone(bp); 887 wd->openings++; 888 } 889 wdstart(wd); 890 } 891 892 void 893 wdrestart(void *v) 894 { 895 struct wd_softc *wd = v; 896 struct buf *bp = wd->sc_bp; 897 int s; 898 899 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 900 DEBUG_XFERS); 901 s = splbio(); 902 __wdstart(v, bp); 903 splx(s); 904 } 905 906 int 907 wdread(dev_t dev, struct uio *uio, int flags) 908 { 909 910 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 911 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 912 } 913 914 int 915 wdwrite(dev_t dev, struct uio *uio, int flags) 916 { 917 918 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 919 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 920 } 921 922 int 923 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 924 { 925 struct wd_softc *wd; 926 int part, error; 927 928 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 929 wd = device_private(device_lookup(&wd_cd, WDUNIT(dev))); 930 if (wd == NULL) 931 return (ENXIO); 932 933 if (! device_is_active(wd->sc_dev)) 934 return (ENODEV); 935 936 part = WDPART(dev); 937 938 mutex_enter(&wd->sc_dk.dk_openlock); 939 940 /* 941 * If there are wedges, and this is not RAW_PART, then we 942 * need to fail. 943 */ 944 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 945 error = EBUSY; 946 goto bad1; 947 } 948 949 /* 950 * If this is the first open of this device, add a reference 951 * to the adapter. 952 */ 953 if (wd->sc_dk.dk_openmask == 0 && 954 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 955 goto bad1; 956 957 if (wd->sc_dk.dk_openmask != 0) { 958 /* 959 * If any partition is open, but the disk has been invalidated, 960 * disallow further opens. 961 */ 962 if ((wd->sc_flags & WDF_LOADED) == 0) { 963 error = EIO; 964 goto bad2; 965 } 966 } else { 967 if ((wd->sc_flags & WDF_LOADED) == 0) { 968 wd->sc_flags |= WDF_LOADED; 969 970 /* Load the physical device parameters. */ 971 wd_get_params(wd, AT_WAIT, &wd->sc_params); 972 973 /* Load the partition info if not already loaded. */ 974 wdgetdisklabel(wd); 975 } 976 } 977 978 /* Check that the partition exists. */ 979 if (part != RAW_PART && 980 (part >= wd->sc_dk.dk_label->d_npartitions || 981 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 982 error = ENXIO; 983 goto bad2; 984 } 985 986 /* Insure only one open at a time. */ 987 switch (fmt) { 988 case S_IFCHR: 989 wd->sc_dk.dk_copenmask |= (1 << part); 990 break; 991 case S_IFBLK: 992 wd->sc_dk.dk_bopenmask |= (1 << part); 993 break; 994 } 995 wd->sc_dk.dk_openmask = 996 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 997 998 mutex_exit(&wd->sc_dk.dk_openlock); 999 return 0; 1000 1001 bad2: 1002 if (wd->sc_dk.dk_openmask == 0) 1003 wd->atabus->ata_delref(wd->drvp); 1004 bad1: 1005 mutex_exit(&wd->sc_dk.dk_openlock); 1006 return error; 1007 } 1008 1009 int 1010 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1011 { 1012 struct wd_softc *wd = 1013 device_private(device_lookup(&wd_cd, WDUNIT(dev))); 1014 int part = WDPART(dev); 1015 1016 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1017 1018 mutex_enter(&wd->sc_dk.dk_openlock); 1019 1020 switch (fmt) { 1021 case S_IFCHR: 1022 wd->sc_dk.dk_copenmask &= ~(1 << part); 1023 break; 1024 case S_IFBLK: 1025 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1026 break; 1027 } 1028 wd->sc_dk.dk_openmask = 1029 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1030 1031 if (wd->sc_dk.dk_openmask == 0) { 1032 wd_flushcache(wd, AT_WAIT); 1033 1034 if (! (wd->sc_flags & WDF_KLABEL)) 1035 wd->sc_flags &= ~WDF_LOADED; 1036 1037 wd->atabus->ata_delref(wd->drvp); 1038 } 1039 1040 mutex_exit(&wd->sc_dk.dk_openlock); 1041 return 0; 1042 } 1043 1044 void 1045 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1046 { 1047 1048 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1049 memset(lp, 0, sizeof(struct disklabel)); 1050 1051 lp->d_secsize = DEV_BSIZE; 1052 lp->d_ntracks = wd->sc_params.atap_heads; 1053 lp->d_nsectors = wd->sc_params.atap_sectors; 1054 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1055 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1056 wd->sc_params.atap_cylinders; 1057 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1058 1059 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1060 lp->d_type = DTYPE_ST506; 1061 else 1062 lp->d_type = DTYPE_ESDI; 1063 1064 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1065 strncpy(lp->d_packname, "fictitious", 16); 1066 if (wd->sc_capacity > UINT32_MAX) 1067 lp->d_secperunit = UINT32_MAX; 1068 else 1069 lp->d_secperunit = wd->sc_capacity; 1070 lp->d_rpm = 3600; 1071 lp->d_interleave = 1; 1072 lp->d_flags = 0; 1073 1074 lp->d_partitions[RAW_PART].p_offset = 0; 1075 lp->d_partitions[RAW_PART].p_size = 1076 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1077 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1078 lp->d_npartitions = RAW_PART + 1; 1079 1080 lp->d_magic = DISKMAGIC; 1081 lp->d_magic2 = DISKMAGIC; 1082 lp->d_checksum = dkcksum(lp); 1083 } 1084 1085 /* 1086 * Fabricate a default disk label, and try to read the correct one. 1087 */ 1088 void 1089 wdgetdisklabel(struct wd_softc *wd) 1090 { 1091 struct disklabel *lp = wd->sc_dk.dk_label; 1092 const char *errstring; 1093 int s; 1094 1095 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1096 1097 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1098 1099 wdgetdefaultlabel(wd, lp); 1100 1101 wd->sc_badsect[0] = -1; 1102 1103 if (wd->drvp->state > RESET) { 1104 s = splbio(); 1105 wd->drvp->drive_flags |= DRIVE_RESET; 1106 splx(s); 1107 } 1108 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1109 RAW_PART), wdstrategy, lp, 1110 wd->sc_dk.dk_cpulabel); 1111 if (errstring) { 1112 /* 1113 * This probably happened because the drive's default 1114 * geometry doesn't match the DOS geometry. We 1115 * assume the DOS geometry is now in the label and try 1116 * again. XXX This is a kluge. 1117 */ 1118 if (wd->drvp->state > RESET) { 1119 s = splbio(); 1120 wd->drvp->drive_flags |= DRIVE_RESET; 1121 splx(s); 1122 } 1123 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1124 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1125 } 1126 if (errstring) { 1127 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1128 return; 1129 } 1130 1131 if (wd->drvp->state > RESET) { 1132 s = splbio(); 1133 wd->drvp->drive_flags |= DRIVE_RESET; 1134 splx(s); 1135 } 1136 #ifdef HAS_BAD144_HANDLING 1137 if ((lp->d_flags & D_BADSECT) != 0) 1138 bad144intern(wd); 1139 #endif 1140 } 1141 1142 void 1143 wdperror(const struct wd_softc *wd) 1144 { 1145 static const char *const errstr0_3[] = {"address mark not found", 1146 "track 0 not found", "aborted command", "media change requested", 1147 "id not found", "media changed", "uncorrectable data error", 1148 "bad block detected"}; 1149 static const char *const errstr4_5[] = { 1150 "obsolete (address mark not found)", 1151 "no media/write protected", "aborted command", 1152 "media change requested", "id not found", "media changed", 1153 "uncorrectable data error", "interface CRC error"}; 1154 const char *const *errstr; 1155 int i; 1156 const char *sep = ""; 1157 1158 const char *devname = device_xname(wd->sc_dev); 1159 struct ata_drive_datas *drvp = wd->drvp; 1160 int errno = wd->sc_wdc_bio.r_error; 1161 1162 if (drvp->ata_vers >= 4) 1163 errstr = errstr4_5; 1164 else 1165 errstr = errstr0_3; 1166 1167 printf("%s: (", devname); 1168 1169 if (errno == 0) 1170 printf("error not notified"); 1171 1172 for (i = 0; i < 8; i++) { 1173 if (errno & (1 << i)) { 1174 printf("%s%s", sep, errstr[i]); 1175 sep = ", "; 1176 } 1177 } 1178 printf(")\n"); 1179 } 1180 1181 int 1182 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1183 { 1184 struct wd_softc *wd = 1185 device_private(device_lookup(&wd_cd, WDUNIT(dev))); 1186 int error = 0, s; 1187 #ifdef __HAVE_OLD_DISKLABEL 1188 struct disklabel *newlabel = NULL; 1189 #endif 1190 1191 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1192 1193 if ((wd->sc_flags & WDF_LOADED) == 0) 1194 return EIO; 1195 1196 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1197 if (error != EPASSTHROUGH) 1198 return (error); 1199 1200 switch (xfer) { 1201 #ifdef HAS_BAD144_HANDLING 1202 case DIOCSBAD: 1203 if ((flag & FWRITE) == 0) 1204 return EBADF; 1205 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1206 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1207 bad144intern(wd); 1208 return 0; 1209 #endif 1210 #ifdef WD_SOFTBADSECT 1211 case DIOCBSLIST : 1212 { 1213 u_int32_t count, missing, skip; 1214 struct disk_badsecinfo dbsi; 1215 struct disk_badsectors *dbs; 1216 size_t available; 1217 uint8_t *laddr; 1218 1219 dbsi = *(struct disk_badsecinfo *)addr; 1220 missing = wd->sc_bscount; 1221 count = 0; 1222 available = dbsi.dbsi_bufsize; 1223 skip = dbsi.dbsi_skip; 1224 laddr = (uint8_t *)dbsi.dbsi_buffer; 1225 1226 /* 1227 * We start this loop with the expectation that all of the 1228 * entries will be missed and decrement this counter each 1229 * time we either skip over one (already copied out) or 1230 * we actually copy it back to user space. The structs 1231 * holding the bad sector information are copied directly 1232 * back to user space whilst the summary is returned via 1233 * the struct passed in via the ioctl. 1234 */ 1235 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1236 if (skip > 0) { 1237 missing--; 1238 skip--; 1239 continue; 1240 } 1241 if (available < sizeof(*dbs)) 1242 break; 1243 available -= sizeof(*dbs); 1244 copyout(dbs, laddr, sizeof(*dbs)); 1245 laddr += sizeof(*dbs); 1246 missing--; 1247 count++; 1248 } 1249 dbsi.dbsi_left = missing; 1250 dbsi.dbsi_copied = count; 1251 *(struct disk_badsecinfo *)addr = dbsi; 1252 return 0; 1253 } 1254 1255 case DIOCBSFLUSH : 1256 /* Clean out the bad sector list */ 1257 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1258 void *head = SLIST_FIRST(&wd->sc_bslist); 1259 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1260 free(head, M_TEMP); 1261 } 1262 wd->sc_bscount = 0; 1263 return 0; 1264 #endif 1265 case DIOCGDINFO: 1266 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1267 return 0; 1268 #ifdef __HAVE_OLD_DISKLABEL 1269 case ODIOCGDINFO: 1270 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1271 if (newlabel == NULL) 1272 return EIO; 1273 *newlabel = *(wd->sc_dk.dk_label); 1274 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1275 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1276 else 1277 error = ENOTTY; 1278 free(newlabel, M_TEMP); 1279 return error; 1280 #endif 1281 1282 case DIOCGPART: 1283 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1284 ((struct partinfo *)addr)->part = 1285 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1286 return 0; 1287 1288 case DIOCWDINFO: 1289 case DIOCSDINFO: 1290 #ifdef __HAVE_OLD_DISKLABEL 1291 case ODIOCWDINFO: 1292 case ODIOCSDINFO: 1293 #endif 1294 { 1295 struct disklabel *lp; 1296 1297 if ((flag & FWRITE) == 0) 1298 return EBADF; 1299 1300 #ifdef __HAVE_OLD_DISKLABEL 1301 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1302 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1303 if (newlabel == NULL) 1304 return EIO; 1305 memset(newlabel, 0, sizeof newlabel); 1306 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1307 lp = newlabel; 1308 } else 1309 #endif 1310 lp = (struct disklabel *)addr; 1311 1312 mutex_enter(&wd->sc_dk.dk_openlock); 1313 wd->sc_flags |= WDF_LABELLING; 1314 1315 error = setdisklabel(wd->sc_dk.dk_label, 1316 lp, /*wd->sc_dk.dk_openmask : */0, 1317 wd->sc_dk.dk_cpulabel); 1318 if (error == 0) { 1319 if (wd->drvp->state > RESET) { 1320 s = splbio(); 1321 wd->drvp->drive_flags |= DRIVE_RESET; 1322 splx(s); 1323 } 1324 if (xfer == DIOCWDINFO 1325 #ifdef __HAVE_OLD_DISKLABEL 1326 || xfer == ODIOCWDINFO 1327 #endif 1328 ) 1329 error = writedisklabel(WDLABELDEV(dev), 1330 wdstrategy, wd->sc_dk.dk_label, 1331 wd->sc_dk.dk_cpulabel); 1332 } 1333 1334 wd->sc_flags &= ~WDF_LABELLING; 1335 mutex_exit(&wd->sc_dk.dk_openlock); 1336 #ifdef __HAVE_OLD_DISKLABEL 1337 if (newlabel != NULL) 1338 free(newlabel, M_TEMP); 1339 #endif 1340 return error; 1341 } 1342 1343 case DIOCKLABEL: 1344 if (*(int *)addr) 1345 wd->sc_flags |= WDF_KLABEL; 1346 else 1347 wd->sc_flags &= ~WDF_KLABEL; 1348 return 0; 1349 1350 case DIOCWLABEL: 1351 if ((flag & FWRITE) == 0) 1352 return EBADF; 1353 if (*(int *)addr) 1354 wd->sc_flags |= WDF_WLABEL; 1355 else 1356 wd->sc_flags &= ~WDF_WLABEL; 1357 return 0; 1358 1359 case DIOCGDEFLABEL: 1360 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1361 return 0; 1362 #ifdef __HAVE_OLD_DISKLABEL 1363 case ODIOCGDEFLABEL: 1364 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1365 if (newlabel == NULL) 1366 return EIO; 1367 wdgetdefaultlabel(wd, newlabel); 1368 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1369 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1370 else 1371 error = ENOTTY; 1372 free(newlabel, M_TEMP); 1373 return error; 1374 #endif 1375 1376 #ifdef notyet 1377 case DIOCWFORMAT: 1378 if ((flag & FWRITE) == 0) 1379 return EBADF; 1380 { 1381 register struct format_op *fop; 1382 struct iovec aiov; 1383 struct uio auio; 1384 1385 fop = (struct format_op *)addr; 1386 aiov.iov_base = fop->df_buf; 1387 aiov.iov_len = fop->df_count; 1388 auio.uio_iov = &aiov; 1389 auio.uio_iovcnt = 1; 1390 auio.uio_resid = fop->df_count; 1391 auio.uio_offset = 1392 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1393 auio.uio_vmspace = l->l_proc->p_vmspace; 1394 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1395 &auio); 1396 fop->df_count -= auio.uio_resid; 1397 fop->df_reg[0] = wdc->sc_status; 1398 fop->df_reg[1] = wdc->sc_error; 1399 return error; 1400 } 1401 #endif 1402 case DIOCGCACHE: 1403 return wd_getcache(wd, (int *)addr); 1404 1405 case DIOCSCACHE: 1406 return wd_setcache(wd, *(int *)addr); 1407 1408 case DIOCCACHESYNC: 1409 return wd_flushcache(wd, AT_WAIT); 1410 1411 case ATAIOCCOMMAND: 1412 /* 1413 * Make sure this command is (relatively) safe first 1414 */ 1415 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1416 (flag & FWRITE) == 0) 1417 return (EBADF); 1418 { 1419 struct wd_ioctl *wi; 1420 atareq_t *atareq = (atareq_t *) addr; 1421 int error1; 1422 1423 wi = wi_get(); 1424 wi->wi_softc = wd; 1425 wi->wi_atareq = *atareq; 1426 1427 if (atareq->datalen && atareq->flags & 1428 (ATACMD_READ | ATACMD_WRITE)) { 1429 void *tbuf; 1430 if (atareq->datalen < DEV_BSIZE 1431 && atareq->command == WDCC_IDENTIFY) { 1432 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1433 wi->wi_iov.iov_base = tbuf; 1434 wi->wi_iov.iov_len = DEV_BSIZE; 1435 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1436 } else { 1437 tbuf = NULL; 1438 wi->wi_iov.iov_base = atareq->databuf; 1439 wi->wi_iov.iov_len = atareq->datalen; 1440 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1441 } 1442 wi->wi_uio.uio_iov = &wi->wi_iov; 1443 wi->wi_uio.uio_iovcnt = 1; 1444 wi->wi_uio.uio_resid = atareq->datalen; 1445 wi->wi_uio.uio_offset = 0; 1446 wi->wi_uio.uio_rw = 1447 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1448 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1449 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1450 minphys, &wi->wi_uio); 1451 if (tbuf != NULL && error1 == 0) { 1452 error1 = copyout(tbuf, atareq->databuf, 1453 atareq->datalen); 1454 free(tbuf, M_TEMP); 1455 } 1456 } else { 1457 /* No need to call physio if we don't have any 1458 user data */ 1459 wi->wi_bp.b_flags = 0; 1460 wi->wi_bp.b_data = 0; 1461 wi->wi_bp.b_bcount = 0; 1462 wi->wi_bp.b_dev = 0; 1463 wi->wi_bp.b_proc = l->l_proc; 1464 wdioctlstrategy(&wi->wi_bp); 1465 error1 = wi->wi_bp.b_error; 1466 } 1467 *atareq = wi->wi_atareq; 1468 wi_free(wi); 1469 return(error1); 1470 } 1471 1472 case DIOCAWEDGE: 1473 { 1474 struct dkwedge_info *dkw = (void *) addr; 1475 1476 if ((flag & FWRITE) == 0) 1477 return (EBADF); 1478 1479 /* If the ioctl happens here, the parent is us. */ 1480 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1481 return (dkwedge_add(dkw)); 1482 } 1483 1484 case DIOCDWEDGE: 1485 { 1486 struct dkwedge_info *dkw = (void *) addr; 1487 1488 if ((flag & FWRITE) == 0) 1489 return (EBADF); 1490 1491 /* If the ioctl happens here, the parent is us. */ 1492 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1493 return (dkwedge_del(dkw)); 1494 } 1495 1496 case DIOCLWEDGES: 1497 { 1498 struct dkwedge_list *dkwl = (void *) addr; 1499 1500 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1501 } 1502 1503 case DIOCGSTRATEGY: 1504 { 1505 struct disk_strategy *dks = (void *)addr; 1506 1507 s = splbio(); 1508 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1509 sizeof(dks->dks_name)); 1510 splx(s); 1511 dks->dks_paramlen = 0; 1512 1513 return 0; 1514 } 1515 1516 case DIOCSSTRATEGY: 1517 { 1518 struct disk_strategy *dks = (void *)addr; 1519 struct bufq_state *new; 1520 struct bufq_state *old; 1521 1522 if ((flag & FWRITE) == 0) { 1523 return EBADF; 1524 } 1525 if (dks->dks_param != NULL) { 1526 return EINVAL; 1527 } 1528 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1529 error = bufq_alloc(&new, dks->dks_name, 1530 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1531 if (error) { 1532 return error; 1533 } 1534 s = splbio(); 1535 old = wd->sc_q; 1536 bufq_move(new, old); 1537 wd->sc_q = new; 1538 splx(s); 1539 bufq_free(old); 1540 1541 return 0; 1542 } 1543 1544 default: 1545 return ENOTTY; 1546 } 1547 1548 #ifdef DIAGNOSTIC 1549 panic("wdioctl: impossible"); 1550 #endif 1551 } 1552 1553 #ifdef B_FORMAT 1554 int 1555 wdformat(struct buf *bp) 1556 { 1557 1558 bp->b_flags |= B_FORMAT; 1559 return wdstrategy(bp); 1560 } 1561 #endif 1562 1563 int 1564 wdsize(dev_t dev) 1565 { 1566 struct wd_softc *wd; 1567 int part, omask; 1568 int size; 1569 1570 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1571 1572 wd = device_private(device_lookup(&wd_cd, WDUNIT(dev))); 1573 if (wd == NULL) 1574 return (-1); 1575 1576 part = WDPART(dev); 1577 omask = wd->sc_dk.dk_openmask & (1 << part); 1578 1579 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1580 return (-1); 1581 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1582 size = -1; 1583 else 1584 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1585 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1586 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1587 return (-1); 1588 return (size); 1589 } 1590 1591 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1592 static int wddoingadump = 0; 1593 static int wddumprecalibrated = 0; 1594 1595 /* 1596 * Dump core after a system crash. 1597 */ 1598 int 1599 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1600 { 1601 struct wd_softc *wd; /* disk unit to do the I/O */ 1602 struct disklabel *lp; /* disk's disklabel */ 1603 int part, err; 1604 int nblks; /* total number of sectors left to write */ 1605 1606 /* Check if recursive dump; if so, punt. */ 1607 if (wddoingadump) 1608 return EFAULT; 1609 wddoingadump = 1; 1610 1611 wd = device_private(device_lookup(&wd_cd, WDUNIT(dev))); 1612 if (wd == NULL) 1613 return (ENXIO); 1614 1615 part = WDPART(dev); 1616 1617 /* Convert to disk sectors. Request must be a multiple of size. */ 1618 lp = wd->sc_dk.dk_label; 1619 if ((size % lp->d_secsize) != 0) 1620 return EFAULT; 1621 nblks = size / lp->d_secsize; 1622 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1623 1624 /* Check transfer bounds against partition size. */ 1625 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1626 return EINVAL; 1627 1628 /* Offset block number to start of partition. */ 1629 blkno += lp->d_partitions[part].p_offset; 1630 1631 /* Recalibrate, if first dump transfer. */ 1632 if (wddumprecalibrated == 0) { 1633 wddumprecalibrated = 1; 1634 (*wd->atabus->ata_reset_drive)(wd->drvp, 1635 AT_POLL | AT_RST_EMERG); 1636 wd->drvp->state = RESET; 1637 } 1638 1639 wd->sc_bp = NULL; 1640 wd->sc_wdc_bio.blkno = blkno; 1641 wd->sc_wdc_bio.flags = ATA_POLL; 1642 if (wd->sc_flags & WDF_LBA48 && 1643 (blkno > LBA48_THRESHOLD || 1644 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1645 wd->sc_wdc_bio.flags |= ATA_LBA48; 1646 if (wd->sc_flags & WDF_LBA) 1647 wd->sc_wdc_bio.flags |= ATA_LBA; 1648 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1649 wd->sc_wdc_bio.databuf = va; 1650 #ifndef WD_DUMP_NOT_TRUSTED 1651 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1652 case ATACMD_TRY_AGAIN: 1653 panic("wddump: try again"); 1654 break; 1655 case ATACMD_QUEUED: 1656 panic("wddump: polled command has been queued"); 1657 break; 1658 case ATACMD_COMPLETE: 1659 break; 1660 } 1661 switch(wd->sc_wdc_bio.error) { 1662 case TIMEOUT: 1663 printf("wddump: device timed out"); 1664 err = EIO; 1665 break; 1666 case ERR_DF: 1667 printf("wddump: drive fault"); 1668 err = EIO; 1669 break; 1670 case ERR_DMA: 1671 printf("wddump: DMA error"); 1672 err = EIO; 1673 break; 1674 case ERROR: 1675 printf("wddump: "); 1676 wdperror(wd); 1677 err = EIO; 1678 break; 1679 case NOERROR: 1680 err = 0; 1681 break; 1682 default: 1683 panic("wddump: unknown error type"); 1684 } 1685 if (err != 0) { 1686 printf("\n"); 1687 return err; 1688 } 1689 #else /* WD_DUMP_NOT_TRUSTED */ 1690 /* Let's just talk about this first... */ 1691 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1692 unit, va, cylin, head, sector); 1693 delay(500 * 1000); /* half a second */ 1694 #endif 1695 1696 wddoingadump = 0; 1697 return 0; 1698 } 1699 1700 #ifdef HAS_BAD144_HANDLING 1701 /* 1702 * Internalize the bad sector table. 1703 */ 1704 void 1705 bad144intern(struct wd_softc *wd) 1706 { 1707 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1708 struct disklabel *lp = wd->sc_dk.dk_label; 1709 int i = 0; 1710 1711 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1712 1713 for (; i < NBT_BAD; i++) { 1714 if (bt->bt_bad[i].bt_cyl == 0xffff) 1715 break; 1716 wd->sc_badsect[i] = 1717 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1718 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1719 (bt->bt_bad[i].bt_trksec & 0xff); 1720 } 1721 for (; i < NBT_BAD+1; i++) 1722 wd->sc_badsect[i] = -1; 1723 } 1724 #endif 1725 1726 static void 1727 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1728 { 1729 prop_dictionary_t disk_info, odisk_info, geom; 1730 const char *cp; 1731 1732 disk_info = prop_dictionary_create(); 1733 1734 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1735 cp = "ST506"; 1736 else { 1737 /* XXX Should have a case for ATA here, too. */ 1738 cp = "ESDI"; 1739 } 1740 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1741 1742 geom = prop_dictionary_create(); 1743 1744 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1745 1746 prop_dictionary_set_uint32(geom, "sector-size", 1747 DEV_BSIZE /* XXX 512? */); 1748 1749 prop_dictionary_set_uint16(geom, "sectors-per-track", 1750 wd->sc_params.atap_sectors); 1751 1752 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1753 wd->sc_params.atap_heads); 1754 1755 if (wd->sc_flags & WDF_LBA) 1756 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1757 wd->sc_capacity / 1758 (wd->sc_params.atap_heads * 1759 wd->sc_params.atap_sectors)); 1760 else 1761 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1762 wd->sc_params.atap_cylinders); 1763 1764 prop_dictionary_set(disk_info, "geometry", geom); 1765 prop_object_release(geom); 1766 1767 prop_dictionary_set(device_properties(wd->sc_dev), 1768 "disk-info", disk_info); 1769 1770 /* 1771 * Don't release disk_info here; we keep a reference to it. 1772 * disk_detach() will release it when we go away. 1773 */ 1774 1775 odisk_info = wd->sc_dk.dk_info; 1776 wd->sc_dk.dk_info = disk_info; 1777 if (odisk_info) 1778 prop_object_release(odisk_info); 1779 } 1780 1781 int 1782 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1783 { 1784 1785 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1786 case CMD_AGAIN: 1787 return 1; 1788 case CMD_ERR: 1789 /* 1790 * We `know' there's a drive here; just assume it's old. 1791 * This geometry is only used to read the MBR and print a 1792 * (false) attach message. 1793 */ 1794 strncpy(params->atap_model, "ST506", 1795 sizeof params->atap_model); 1796 params->atap_config = ATA_CFG_FIXED; 1797 params->atap_cylinders = 1024; 1798 params->atap_heads = 8; 1799 params->atap_sectors = 17; 1800 params->atap_multi = 1; 1801 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1802 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1803 /* FALLTHROUGH */ 1804 case CMD_OK: 1805 wd_params_to_properties(wd, params); 1806 return 0; 1807 default: 1808 panic("wd_get_params: bad return code from ata_get_params"); 1809 /* NOTREACHED */ 1810 } 1811 } 1812 1813 int 1814 wd_getcache(struct wd_softc *wd, int *bitsp) 1815 { 1816 struct ataparams params; 1817 1818 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1819 return EIO; 1820 if (params.atap_cmd_set1 == 0x0000 || 1821 params.atap_cmd_set1 == 0xffff || 1822 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1823 *bitsp = 0; 1824 return 0; 1825 } 1826 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1827 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1828 *bitsp |= DKCACHE_WRITE; 1829 1830 return 0; 1831 } 1832 1833 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1834 1835 int 1836 wd_setcache(struct wd_softc *wd, int bits) 1837 { 1838 struct ataparams params; 1839 struct ata_command ata_c; 1840 1841 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1842 return EIO; 1843 1844 if (params.atap_cmd_set1 == 0x0000 || 1845 params.atap_cmd_set1 == 0xffff || 1846 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1847 return EOPNOTSUPP; 1848 1849 if ((bits & DKCACHE_READ) == 0 || 1850 (bits & DKCACHE_SAVE) != 0) 1851 return EOPNOTSUPP; 1852 1853 memset(&ata_c, 0, sizeof(struct ata_command)); 1854 ata_c.r_command = SET_FEATURES; 1855 ata_c.r_st_bmask = 0; 1856 ata_c.r_st_pmask = 0; 1857 ata_c.timeout = 30000; /* 30s timeout */ 1858 ata_c.flags = AT_WAIT; 1859 if (bits & DKCACHE_WRITE) 1860 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1861 else 1862 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1863 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1864 aprint_error_dev(wd->sc_dev, 1865 "wd_setcache command not complete\n"); 1866 return EIO; 1867 } 1868 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1869 char sbuf[sizeof(at_errbits) + 64]; 1870 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1871 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1872 return EIO; 1873 } 1874 return 0; 1875 } 1876 1877 static int 1878 wd_standby(struct wd_softc *wd, int flags) 1879 { 1880 struct ata_command ata_c; 1881 1882 memset(&ata_c, 0, sizeof(struct ata_command)); 1883 ata_c.r_command = WDCC_STANDBY_IMMED; 1884 ata_c.r_st_bmask = WDCS_DRDY; 1885 ata_c.r_st_pmask = WDCS_DRDY; 1886 ata_c.flags = flags; 1887 ata_c.timeout = 30000; /* 30s timeout */ 1888 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1889 aprint_error_dev(wd->sc_dev, 1890 "standby immediate command didn't complete\n"); 1891 return EIO; 1892 } 1893 if (ata_c.flags & AT_ERROR) { 1894 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1895 return ENODEV; 1896 } 1897 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1898 char sbuf[sizeof(at_errbits) + 64]; 1899 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1900 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1901 return EIO; 1902 } 1903 return 0; 1904 } 1905 1906 int 1907 wd_flushcache(struct wd_softc *wd, int flags) 1908 { 1909 struct ata_command ata_c; 1910 1911 /* 1912 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1913 * only ATA-2 and still support it. 1914 */ 1915 if (wd->drvp->ata_vers < 4 && 1916 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1917 wd->sc_params.atap_cmd_set2 == 0xffff)) 1918 return ENODEV; 1919 memset(&ata_c, 0, sizeof(struct ata_command)); 1920 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1921 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1922 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1923 else 1924 ata_c.r_command = WDCC_FLUSHCACHE; 1925 ata_c.r_st_bmask = WDCS_DRDY; 1926 ata_c.r_st_pmask = WDCS_DRDY; 1927 ata_c.flags = flags; 1928 ata_c.timeout = 30000; /* 30s timeout */ 1929 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1930 aprint_error_dev(wd->sc_dev, 1931 "flush cache command didn't complete\n"); 1932 return EIO; 1933 } 1934 if (ata_c.flags & AT_ERROR) { 1935 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1936 return ENODEV; 1937 } 1938 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1939 char sbuf[sizeof(at_errbits) + 64]; 1940 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1941 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1942 sbuf); 1943 return EIO; 1944 } 1945 return 0; 1946 } 1947 1948 bool 1949 wd_shutdown(device_t dev, int how) 1950 { 1951 1952 struct wd_softc *wd = device_private(dev); 1953 wd_flushcache(wd, AT_POLL); 1954 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1955 wd_standby(wd, AT_POLL); 1956 return true; 1957 } 1958 1959 /* 1960 * Allocate space for a ioctl queue structure. Mostly taken from 1961 * scsipi_ioctl.c 1962 */ 1963 struct wd_ioctl * 1964 wi_get(void) 1965 { 1966 struct wd_ioctl *wi; 1967 int s; 1968 1969 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1970 buf_init(&wi->wi_bp); 1971 s = splbio(); 1972 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1973 splx(s); 1974 return (wi); 1975 } 1976 1977 /* 1978 * Free an ioctl structure and remove it from our list 1979 */ 1980 1981 void 1982 wi_free(struct wd_ioctl *wi) 1983 { 1984 int s; 1985 1986 s = splbio(); 1987 LIST_REMOVE(wi, wi_list); 1988 splx(s); 1989 buf_destroy(&wi->wi_bp); 1990 free(wi, M_TEMP); 1991 } 1992 1993 /* 1994 * Find a wd_ioctl structure based on the struct buf. 1995 */ 1996 1997 struct wd_ioctl * 1998 wi_find(struct buf *bp) 1999 { 2000 struct wd_ioctl *wi; 2001 int s; 2002 2003 s = splbio(); 2004 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 2005 if (bp == &wi->wi_bp) 2006 break; 2007 splx(s); 2008 return (wi); 2009 } 2010 2011 /* 2012 * Ioctl pseudo strategy routine 2013 * 2014 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2015 * happens here is: 2016 * 2017 * - wdioctl() queues a wd_ioctl structure. 2018 * 2019 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2020 * user space I/O is required. If physio() is called, physio() eventually 2021 * calls wdioctlstrategy(). 2022 * 2023 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2024 * to perform the actual command 2025 * 2026 * The reason for the use of the pseudo strategy routine is because 2027 * when doing I/O to/from user space, physio _really_ wants to be in 2028 * the loop. We could put the entire buffer into the ioctl request 2029 * structure, but that won't scale if we want to do things like download 2030 * microcode. 2031 */ 2032 2033 void 2034 wdioctlstrategy(struct buf *bp) 2035 { 2036 struct wd_ioctl *wi; 2037 struct ata_command ata_c; 2038 int error = 0; 2039 2040 wi = wi_find(bp); 2041 if (wi == NULL) { 2042 printf("wdioctlstrategy: " 2043 "No matching ioctl request found in queue\n"); 2044 error = EINVAL; 2045 goto bad; 2046 } 2047 2048 memset(&ata_c, 0, sizeof(ata_c)); 2049 2050 /* 2051 * Abort if physio broke up the transfer 2052 */ 2053 2054 if (bp->b_bcount != wi->wi_atareq.datalen) { 2055 printf("physio split wd ioctl request... cannot proceed\n"); 2056 error = EIO; 2057 goto bad; 2058 } 2059 2060 /* 2061 * Abort if we didn't get a buffer size that was a multiple of 2062 * our sector size (or was larger than NBBY) 2063 */ 2064 2065 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2066 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2067 (1 << NBBY)) { 2068 error = EINVAL; 2069 goto bad; 2070 } 2071 2072 /* 2073 * Make sure a timeout was supplied in the ioctl request 2074 */ 2075 2076 if (wi->wi_atareq.timeout == 0) { 2077 error = EINVAL; 2078 goto bad; 2079 } 2080 2081 if (wi->wi_atareq.flags & ATACMD_READ) 2082 ata_c.flags |= AT_READ; 2083 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2084 ata_c.flags |= AT_WRITE; 2085 2086 if (wi->wi_atareq.flags & ATACMD_READREG) 2087 ata_c.flags |= AT_READREG; 2088 2089 ata_c.flags |= AT_WAIT; 2090 2091 ata_c.timeout = wi->wi_atareq.timeout; 2092 ata_c.r_command = wi->wi_atareq.command; 2093 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2094 ata_c.r_cyl = wi->wi_atareq.cylinder; 2095 ata_c.r_sector = wi->wi_atareq.sec_num; 2096 ata_c.r_count = wi->wi_atareq.sec_count; 2097 ata_c.r_features = wi->wi_atareq.features; 2098 ata_c.r_st_bmask = WDCS_DRDY; 2099 ata_c.r_st_pmask = WDCS_DRDY; 2100 ata_c.data = wi->wi_bp.b_data; 2101 ata_c.bcount = wi->wi_bp.b_bcount; 2102 2103 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2104 != ATACMD_COMPLETE) { 2105 wi->wi_atareq.retsts = ATACMD_ERROR; 2106 goto bad; 2107 } 2108 2109 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2110 if (ata_c.flags & AT_ERROR) { 2111 wi->wi_atareq.retsts = ATACMD_ERROR; 2112 wi->wi_atareq.error = ata_c.r_error; 2113 } else if (ata_c.flags & AT_DF) 2114 wi->wi_atareq.retsts = ATACMD_DF; 2115 else 2116 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2117 } else { 2118 wi->wi_atareq.retsts = ATACMD_OK; 2119 if (wi->wi_atareq.flags & ATACMD_READREG) { 2120 wi->wi_atareq.head = ata_c.r_head ; 2121 wi->wi_atareq.cylinder = ata_c.r_cyl; 2122 wi->wi_atareq.sec_num = ata_c.r_sector; 2123 wi->wi_atareq.sec_count = ata_c.r_count; 2124 wi->wi_atareq.features = ata_c.r_features; 2125 wi->wi_atareq.error = ata_c.r_error; 2126 } 2127 } 2128 2129 bp->b_error = 0; 2130 biodone(bp); 2131 return; 2132 bad: 2133 bp->b_error = error; 2134 biodone(bp); 2135 } 2136
Indexes created Tue Sep 30 11:09:46 GMT 2025