wd.c revision 1.363.8.1.4.1
1 /* $NetBSD: wd.c,v 1.363.8.1.4.1 2010/04/21 00:27:34 matt 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 * 48 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 49 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 50 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 51 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 52 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 53 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 56 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 58 * POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.363.8.1.4.1 2010/04/21 00:27:34 matt Exp $"); 63 64 #include "opt_ata.h" 65 66 #include "rnd.h" 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/conf.h> 72 #include <sys/file.h> 73 #include <sys/stat.h> 74 #include <sys/ioctl.h> 75 #include <sys/buf.h> 76 #include <sys/bufq.h> 77 #include <sys/uio.h> 78 #include <sys/malloc.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/disk.h> 82 #include <sys/syslog.h> 83 #include <sys/proc.h> 84 #include <sys/reboot.h> 85 #include <sys/vnode.h> 86 #if NRND > 0 87 #include <sys/rnd.h> 88 #endif 89 90 #include <sys/intr.h> 91 #include <sys/bus.h> 92 93 #include <dev/ata/atareg.h> 94 #include <dev/ata/atavar.h> 95 #include <dev/ata/wdvar.h> 96 #include <dev/ic/wdcreg.h> 97 #include <sys/ataio.h> 98 #include "locators.h" 99 100 #include <prop/proplib.h> 101 102 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 103 #define WDIORETRIES 5 /* number of retries before giving up */ 104 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 105 106 #define WDUNIT(dev) DISKUNIT(dev) 107 #define WDPART(dev) DISKPART(dev) 108 #define WDMINOR(unit, part) DISKMINOR(unit, part) 109 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 110 111 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 112 113 #define DEBUG_INTR 0x01 114 #define DEBUG_XFERS 0x02 115 #define DEBUG_STATUS 0x04 116 #define DEBUG_FUNCS 0x08 117 #define DEBUG_PROBE 0x10 118 #ifdef ATADEBUG 119 int wdcdebug_wd_mask = 0x0; 120 #define ATADEBUG_PRINT(args, level) \ 121 if (wdcdebug_wd_mask & (level)) \ 122 printf args 123 #else 124 #define ATADEBUG_PRINT(args, level) 125 #endif 126 127 int wdprobe(struct device *, struct cfdata *, void *); 128 void wdattach(struct device *, struct device *, void *); 129 int wddetach(struct device *, int); 130 int wdactivate(struct device *, enum devact); 131 int wdprint(void *, char *); 132 void wdperror(const struct wd_softc *); 133 134 static bool wd_suspend(device_t PMF_FN_PROTO); 135 static int wd_standby(struct wd_softc *, int); 136 137 CFATTACH_DECL_NEW(wd, sizeof(struct wd_softc), 138 wdprobe, wdattach, wddetach, wdactivate); 139 140 extern struct cfdriver wd_cd; 141 142 dev_type_open(wdopen); 143 dev_type_close(wdclose); 144 dev_type_read(wdread); 145 dev_type_write(wdwrite); 146 dev_type_ioctl(wdioctl); 147 dev_type_strategy(wdstrategy); 148 dev_type_dump(wddump); 149 dev_type_size(wdsize); 150 151 const struct bdevsw wd_bdevsw = { 152 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 153 }; 154 155 const struct cdevsw wd_cdevsw = { 156 wdopen, wdclose, wdread, wdwrite, wdioctl, 157 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 158 }; 159 160 /* 161 * Glue necessary to hook WDCIOCCOMMAND into physio 162 */ 163 164 struct wd_ioctl { 165 LIST_ENTRY(wd_ioctl) wi_list; 166 struct buf wi_bp; 167 struct uio wi_uio; 168 struct iovec wi_iov; 169 atareq_t wi_atareq; 170 struct wd_softc *wi_softc; 171 }; 172 173 LIST_HEAD(, wd_ioctl) wi_head; 174 175 struct wd_ioctl *wi_find(struct buf *); 176 void wi_free(struct wd_ioctl *); 177 struct wd_ioctl *wi_get(void); 178 void wdioctlstrategy(struct buf *); 179 180 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 181 void wdgetdisklabel(struct wd_softc *); 182 void wdstart(void *); 183 void __wdstart(struct wd_softc*, struct buf *); 184 void wdrestart(void *); 185 void wddone(void *); 186 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 187 int wd_flushcache(struct wd_softc *, int); 188 bool wd_shutdown(device_t, int); 189 190 int wd_getcache(struct wd_softc *, int *); 191 int wd_setcache(struct wd_softc *, int); 192 193 struct dkdriver wddkdriver = { wdstrategy, minphys }; 194 195 #ifdef HAS_BAD144_HANDLING 196 static void bad144intern(struct wd_softc *); 197 #endif 198 199 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 200 201 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 202 203 /* 204 * Quirk table for IDE drives. Put more-specific matches first, since 205 * a simple globbing routine is used for matching. 206 */ 207 static const struct wd_quirk { 208 const char *wdq_match; /* inquiry pattern to match */ 209 int wdq_quirks; /* drive quirks */ 210 } wd_quirk_table[] = { 211 /* 212 * Some Seagate S-ATA drives have a PHY which can get confused 213 * with the way data is packetized by some S-ATA controllers. 214 * 215 * The work-around is to split in two any write transfer whose 216 * sector count % 15 == 1 (assuming 512 byte sectors). 217 * 218 * XXX This is an incomplete list. There are at least a couple 219 * XXX more model numbers. If you have trouble with such transfers 220 * XXX (8K is the most common) on Seagate S-ATA drives, please 221 * XXX notify thorpej (at) NetBSD.org. 222 */ 223 { "ST3120023AS", 224 WD_QUIRK_SPLIT_MOD15_WRITE }, 225 { "ST380023AS", 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(struct device *parent, struct cfdata *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(struct device *parent, struct device *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"); 289 290 /* read our drive info */ 291 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 292 aprint_error("\n%s: IDENTIFY failed\n", device_xname(self)); 293 return; 294 } 295 296 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 297 i < sizeof(wd->sc_params.atap_model); i++) { 298 c = *p++; 299 if (c == '\0') 300 break; 301 if (c != ' ') { 302 if (blank) { 303 *q++ = ' '; 304 blank = 0; 305 } 306 *q++ = c; 307 } else 308 blank = 1; 309 } 310 *q++ = '\0'; 311 312 aprint_normal(": <%s>\n", tbuf); 313 314 wdq = wd_lookup_quirks(tbuf); 315 if (wdq != NULL) 316 wd->sc_quirks = wdq->wdq_quirks; 317 318 if (wd->sc_quirks != 0) { 319 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 320 bitmask_snprintf(wd->sc_quirks, WD_QUIRK_FMT, 321 sbuf, sizeof(sbuf)); 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 #if NRND > 0 391 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 392 RND_TYPE_DISK, 0); 393 #endif 394 395 /* Discover wedges on this disk. */ 396 dkwedge_discover(&wd->sc_dk); 397 398 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 399 aprint_error_dev(self, "couldn't establish power handler\n"); 400 } 401 402 static bool 403 wd_suspend(device_t dv PMF_FN_ARGS) 404 { 405 struct wd_softc *sc = device_private(dv); 406 407 wd_flushcache(sc, AT_WAIT); 408 wd_standby(sc, AT_WAIT); 409 return true; 410 } 411 412 int 413 wdactivate(struct device *self, enum devact act) 414 { 415 int rv = 0; 416 417 switch (act) { 418 case DVACT_ACTIVATE: 419 rv = EOPNOTSUPP; 420 break; 421 422 case DVACT_DEACTIVATE: 423 /* 424 * Nothing to do; we key off the device's DVF_ACTIVATE. 425 */ 426 break; 427 } 428 return (rv); 429 } 430 431 int 432 wddetach(struct device *self, int flags) 433 { 434 struct wd_softc *sc = device_private(self); 435 int s, bmaj, cmaj, i, mn; 436 437 /* locate the major number */ 438 bmaj = bdevsw_lookup_major(&wd_bdevsw); 439 cmaj = cdevsw_lookup_major(&wd_cdevsw); 440 441 /* Nuke the vnodes for any open instances. */ 442 for (i = 0; i < MAXPARTITIONS; i++) { 443 mn = WDMINOR(device_unit(self), i); 444 vdevgone(bmaj, mn, mn, VBLK); 445 vdevgone(cmaj, mn, mn, VCHR); 446 } 447 448 /* Delete all of our wedges. */ 449 dkwedge_delall(&sc->sc_dk); 450 451 s = splbio(); 452 453 /* Kill off any queued buffers. */ 454 bufq_drain(sc->sc_q); 455 456 bufq_free(sc->sc_q); 457 sc->atabus->ata_killpending(sc->drvp); 458 459 splx(s); 460 461 /* Detach disk. */ 462 disk_detach(&sc->sc_dk); 463 disk_destroy(&sc->sc_dk); 464 465 #ifdef WD_SOFTBADSECT 466 /* Clean out the bad sector list */ 467 while (!SLIST_EMPTY(&sc->sc_bslist)) { 468 void *head = SLIST_FIRST(&sc->sc_bslist); 469 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 470 free(head, M_TEMP); 471 } 472 sc->sc_bscount = 0; 473 #endif 474 475 pmf_device_deregister(self); 476 477 #if NRND > 0 478 /* Unhook the entropy source. */ 479 rnd_detach_source(&sc->rnd_source); 480 #endif 481 482 sc->drvp->drive_flags = 0; /* no drive any more here */ 483 484 return (0); 485 } 486 487 /* 488 * Read/write routine for a buffer. Validates the arguments and schedules the 489 * transfer. Does not wait for the transfer to complete. 490 */ 491 void 492 wdstrategy(struct buf *bp) 493 { 494 struct wd_softc *wd = 495 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 496 struct disklabel *lp = wd->sc_dk.dk_label; 497 daddr_t blkno; 498 int s; 499 500 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 501 DEBUG_XFERS); 502 503 /* Valid request? */ 504 if (bp->b_blkno < 0 || 505 (bp->b_bcount % lp->d_secsize) != 0 || 506 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 507 bp->b_error = EINVAL; 508 goto done; 509 } 510 511 /* If device invalidated (e.g. media change, door open), error. */ 512 if ((wd->sc_flags & WDF_LOADED) == 0) { 513 bp->b_error = EIO; 514 goto done; 515 } 516 517 /* If it's a null transfer, return immediately. */ 518 if (bp->b_bcount == 0) 519 goto done; 520 521 /* 522 * Do bounds checking, adjust transfer. if error, process. 523 * If end of partition, just return. 524 */ 525 if (WDPART(bp->b_dev) == RAW_PART) { 526 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 527 wd->sc_capacity) <= 0) 528 goto done; 529 } else { 530 if (bounds_check_with_label(&wd->sc_dk, bp, 531 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 532 goto done; 533 } 534 535 /* 536 * Now convert the block number to absolute and put it in 537 * terms of the device's logical block size. 538 */ 539 if (lp->d_secsize >= DEV_BSIZE) 540 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 541 else 542 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 543 544 if (WDPART(bp->b_dev) != RAW_PART) 545 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 546 547 bp->b_rawblkno = blkno; 548 549 #ifdef WD_SOFTBADSECT 550 /* 551 * If the transfer about to be attempted contains only a block that 552 * is known to be bad then return an error for the transfer without 553 * even attempting to start a transfer up under the premis that we 554 * will just end up doing more retries for a transfer that will end 555 * up failing again. 556 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 557 */ 558 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 559 struct disk_badsectors *dbs; 560 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 561 562 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 563 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 564 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 565 bp->b_error = EIO; 566 goto done; 567 } 568 } 569 #endif 570 571 /* Queue transfer on drive, activate drive and controller if idle. */ 572 s = splbio(); 573 BUFQ_PUT(wd->sc_q, bp); 574 wdstart(wd); 575 splx(s); 576 return; 577 done: 578 /* Toss transfer; we're done early. */ 579 bp->b_resid = bp->b_bcount; 580 biodone(bp); 581 } 582 583 /* 584 * Queue a drive for I/O. 585 */ 586 void 587 wdstart(void *arg) 588 { 589 struct wd_softc *wd = arg; 590 struct buf *bp = NULL; 591 592 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 593 DEBUG_XFERS); 594 while (wd->openings > 0) { 595 596 /* Is there a buf for us ? */ 597 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 598 return; 599 600 /* 601 * Make the command. First lock the device 602 */ 603 wd->openings--; 604 605 wd->retries = 0; 606 __wdstart(wd, bp); 607 } 608 } 609 610 static void 611 wd_split_mod15_write(struct buf *bp) 612 { 613 struct buf *obp = bp->b_private; 614 struct wd_softc *sc = 615 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 616 int s; 617 618 if (__predict_false(bp->b_error != 0)) { 619 /* 620 * Propagate the error. If this was the first half of 621 * the original transfer, make sure to account for that 622 * in the residual. 623 */ 624 if (bp->b_data == obp->b_data) 625 bp->b_resid += bp->b_bcount; 626 goto done; 627 } 628 629 /* 630 * If this was the second half of the transfer, we're all done! 631 */ 632 if (bp->b_data != obp->b_data) 633 goto done; 634 635 /* 636 * Advance the pointer to the second half and issue that command 637 * using the same opening. 638 */ 639 bp->b_flags = obp->b_flags; 640 bp->b_oflags = obp->b_oflags; 641 bp->b_cflags = obp->b_cflags; 642 bp->b_data = (char *)bp->b_data + bp->b_bcount; 643 bp->b_blkno += (bp->b_bcount / 512); 644 bp->b_rawblkno += (bp->b_bcount / 512); 645 s = splbio(); 646 __wdstart(sc, bp); 647 splx(s); 648 return; 649 650 done: 651 obp->b_error = bp->b_error; 652 obp->b_resid = bp->b_resid; 653 s = splbio(); 654 putiobuf(bp); 655 biodone(obp); 656 sc->openings++; 657 splx(s); 658 /* wddone() will call wdstart() */ 659 } 660 661 void 662 __wdstart(struct wd_softc *wd, struct buf *bp) 663 { 664 665 /* 666 * Deal with the "split mod15 write" quirk. We just divide the 667 * transfer in two, doing the first half and then then second half 668 * with the same command opening. 669 * 670 * Note we MUST do this here, because we can't let insertion 671 * into the bufq cause the transfers to be re-merged. 672 */ 673 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 674 (bp->b_flags & B_READ) == 0 && 675 bp->b_bcount > 512 && 676 ((bp->b_bcount / 512) % 15) == 1)) { 677 struct buf *nbp; 678 679 /* already at splbio */ 680 nbp = getiobuf(NULL, false); 681 if (__predict_false(nbp == NULL)) { 682 /* No memory -- fail the iop. */ 683 bp->b_error = ENOMEM; 684 bp->b_resid = bp->b_bcount; 685 biodone(bp); 686 wd->openings++; 687 return; 688 } 689 690 nbp->b_error = 0; 691 nbp->b_proc = bp->b_proc; 692 nbp->b_dev = bp->b_dev; 693 694 nbp->b_bcount = bp->b_bcount / 2; 695 nbp->b_bufsize = bp->b_bcount / 2; 696 nbp->b_data = bp->b_data; 697 698 nbp->b_blkno = bp->b_blkno; 699 nbp->b_rawblkno = bp->b_rawblkno; 700 701 nbp->b_flags = bp->b_flags; 702 nbp->b_oflags = bp->b_oflags; 703 nbp->b_cflags = bp->b_cflags; 704 nbp->b_iodone = wd_split_mod15_write; 705 706 /* Put ptr to orig buf in b_private and use new buf */ 707 nbp->b_private = bp; 708 709 BIO_COPYPRIO(nbp, bp); 710 711 bp = nbp; 712 } 713 714 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 715 wd->sc_wdc_bio.bcount = bp->b_bcount; 716 wd->sc_wdc_bio.databuf = bp->b_data; 717 wd->sc_wdc_bio.blkdone =0; 718 wd->sc_bp = bp; 719 /* 720 * If we're retrying, retry in single-sector mode. This will give us 721 * the sector number of the problem, and will eventually allow the 722 * transfer to succeed. 723 */ 724 if (wd->retries >= WDIORETRIES_SINGLE) 725 wd->sc_wdc_bio.flags = ATA_SINGLE; 726 else 727 wd->sc_wdc_bio.flags = 0; 728 if (wd->sc_flags & WDF_LBA48 && 729 (wd->sc_wdc_bio.blkno + 730 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 731 wd->sc_capacity28) 732 wd->sc_wdc_bio.flags |= ATA_LBA48; 733 if (wd->sc_flags & WDF_LBA) 734 wd->sc_wdc_bio.flags |= ATA_LBA; 735 if (bp->b_flags & B_READ) 736 wd->sc_wdc_bio.flags |= ATA_READ; 737 /* Instrumentation. */ 738 disk_busy(&wd->sc_dk); 739 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 740 case ATACMD_TRY_AGAIN: 741 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 742 break; 743 case ATACMD_QUEUED: 744 case ATACMD_COMPLETE: 745 break; 746 default: 747 panic("__wdstart: bad return code from ata_bio()"); 748 } 749 } 750 751 void 752 wddone(void *v) 753 { 754 struct wd_softc *wd = device_private(v); 755 struct buf *bp = wd->sc_bp; 756 const char *errmsg; 757 int do_perror = 0; 758 759 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 760 DEBUG_XFERS); 761 if (bp == NULL) 762 return; 763 bp->b_resid = wd->sc_wdc_bio.bcount; 764 switch (wd->sc_wdc_bio.error) { 765 case ERR_DMA: 766 errmsg = "DMA error"; 767 goto retry; 768 case ERR_DF: 769 errmsg = "device fault"; 770 goto retry; 771 case TIMEOUT: 772 errmsg = "device timeout"; 773 goto retry; 774 case ERR_RESET: 775 errmsg = "channel reset"; 776 goto retry2; 777 case ERROR: 778 /* Don't care about media change bits */ 779 if (wd->sc_wdc_bio.r_error != 0 && 780 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 781 goto noerror; 782 errmsg = "error"; 783 do_perror = 1; 784 retry: /* Just reset and retry. Can we do more ? */ 785 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 786 retry2: 787 diskerr(bp, "wd", errmsg, LOG_PRINTF, 788 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 789 if (wd->retries < WDIORETRIES) 790 printf(", retrying"); 791 printf("\n"); 792 if (do_perror) 793 wdperror(wd); 794 if (wd->retries < WDIORETRIES) { 795 wd->retries++; 796 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 797 wdrestart, wd); 798 return; 799 } 800 801 #ifdef WD_SOFTBADSECT 802 /* 803 * Not all errors indicate a failed block but those that do, 804 * put the block on the bad-block list for the device. Only 805 * do this for reads because the drive should do it for writes, 806 * itself, according to Manuel. 807 */ 808 if ((bp->b_flags & B_READ) && 809 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 810 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 811 struct disk_badsectors *dbs; 812 813 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 814 dbs->dbs_min = bp->b_rawblkno; 815 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 816 microtime(&dbs->dbs_failedat); 817 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 818 wd->sc_bscount++; 819 } 820 #endif 821 bp->b_error = EIO; 822 break; 823 case NOERROR: 824 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 825 aprint_error_dev(wd->sc_dev, 826 "soft error (corrected)\n"); 827 break; 828 case ERR_NODEV: 829 bp->b_error = EIO; 830 break; 831 } 832 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 833 (bp->b_flags & B_READ)); 834 #if NRND > 0 835 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 836 #endif 837 /* XXX Yuck, but we don't want to increment openings in this case */ 838 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 839 biodone(bp); 840 else { 841 biodone(bp); 842 wd->openings++; 843 } 844 wdstart(wd); 845 } 846 847 void 848 wdrestart(void *v) 849 { 850 struct wd_softc *wd = v; 851 struct buf *bp = wd->sc_bp; 852 int s; 853 854 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 855 DEBUG_XFERS); 856 s = splbio(); 857 __wdstart(v, bp); 858 splx(s); 859 } 860 861 int 862 wdread(dev_t dev, struct uio *uio, int flags) 863 { 864 865 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 866 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 867 } 868 869 int 870 wdwrite(dev_t dev, struct uio *uio, int flags) 871 { 872 873 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 874 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 875 } 876 877 int 878 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 879 { 880 struct wd_softc *wd; 881 int part, error; 882 883 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 884 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 885 if (wd == NULL) 886 return (ENXIO); 887 888 if (! device_is_active(wd->sc_dev)) 889 return (ENODEV); 890 891 part = WDPART(dev); 892 893 mutex_enter(&wd->sc_dk.dk_openlock); 894 895 /* 896 * If there are wedges, and this is not RAW_PART, then we 897 * need to fail. 898 */ 899 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 900 error = EBUSY; 901 goto bad1; 902 } 903 904 /* 905 * If this is the first open of this device, add a reference 906 * to the adapter. 907 */ 908 if (wd->sc_dk.dk_openmask == 0 && 909 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 910 goto bad1; 911 912 if (wd->sc_dk.dk_openmask != 0) { 913 /* 914 * If any partition is open, but the disk has been invalidated, 915 * disallow further opens. 916 */ 917 if ((wd->sc_flags & WDF_LOADED) == 0) { 918 error = EIO; 919 goto bad2; 920 } 921 } else { 922 if ((wd->sc_flags & WDF_LOADED) == 0) { 923 wd->sc_flags |= WDF_LOADED; 924 925 /* Load the physical device parameters. */ 926 wd_get_params(wd, AT_WAIT, &wd->sc_params); 927 928 /* Load the partition info if not already loaded. */ 929 wdgetdisklabel(wd); 930 } 931 } 932 933 /* Check that the partition exists. */ 934 if (part != RAW_PART && 935 (part >= wd->sc_dk.dk_label->d_npartitions || 936 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 937 error = ENXIO; 938 goto bad2; 939 } 940 941 /* Insure only one open at a time. */ 942 switch (fmt) { 943 case S_IFCHR: 944 wd->sc_dk.dk_copenmask |= (1 << part); 945 break; 946 case S_IFBLK: 947 wd->sc_dk.dk_bopenmask |= (1 << part); 948 break; 949 } 950 wd->sc_dk.dk_openmask = 951 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 952 953 mutex_exit(&wd->sc_dk.dk_openlock); 954 return 0; 955 956 bad2: 957 if (wd->sc_dk.dk_openmask == 0) 958 wd->atabus->ata_delref(wd->drvp); 959 bad1: 960 mutex_exit(&wd->sc_dk.dk_openlock); 961 return error; 962 } 963 964 int 965 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 966 { 967 struct wd_softc *wd = 968 device_lookup_private(&wd_cd, WDUNIT(dev)); 969 int part = WDPART(dev); 970 971 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 972 973 mutex_enter(&wd->sc_dk.dk_openlock); 974 975 switch (fmt) { 976 case S_IFCHR: 977 wd->sc_dk.dk_copenmask &= ~(1 << part); 978 break; 979 case S_IFBLK: 980 wd->sc_dk.dk_bopenmask &= ~(1 << part); 981 break; 982 } 983 wd->sc_dk.dk_openmask = 984 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 985 986 if (wd->sc_dk.dk_openmask == 0) { 987 wd_flushcache(wd, AT_WAIT); 988 989 if (! (wd->sc_flags & WDF_KLABEL)) 990 wd->sc_flags &= ~WDF_LOADED; 991 992 wd->atabus->ata_delref(wd->drvp); 993 } 994 995 mutex_exit(&wd->sc_dk.dk_openlock); 996 return 0; 997 } 998 999 void 1000 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1001 { 1002 1003 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1004 memset(lp, 0, sizeof(struct disklabel)); 1005 1006 lp->d_secsize = DEV_BSIZE; 1007 lp->d_ntracks = wd->sc_params.atap_heads; 1008 lp->d_nsectors = wd->sc_params.atap_sectors; 1009 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1010 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1011 wd->sc_params.atap_cylinders; 1012 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1013 1014 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1015 lp->d_type = DTYPE_ST506; 1016 else 1017 lp->d_type = DTYPE_ESDI; 1018 1019 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1020 strncpy(lp->d_packname, "fictitious", 16); 1021 if (wd->sc_capacity > UINT32_MAX) 1022 lp->d_secperunit = UINT32_MAX; 1023 else 1024 lp->d_secperunit = wd->sc_capacity; 1025 lp->d_rpm = 3600; 1026 lp->d_interleave = 1; 1027 lp->d_flags = 0; 1028 1029 lp->d_partitions[RAW_PART].p_offset = 0; 1030 lp->d_partitions[RAW_PART].p_size = 1031 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1032 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1033 lp->d_npartitions = RAW_PART + 1; 1034 1035 lp->d_magic = DISKMAGIC; 1036 lp->d_magic2 = DISKMAGIC; 1037 lp->d_checksum = dkcksum(lp); 1038 } 1039 1040 /* 1041 * Fabricate a default disk label, and try to read the correct one. 1042 */ 1043 void 1044 wdgetdisklabel(struct wd_softc *wd) 1045 { 1046 struct disklabel *lp = wd->sc_dk.dk_label; 1047 const char *errstring; 1048 int s; 1049 1050 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1051 1052 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1053 1054 wdgetdefaultlabel(wd, lp); 1055 1056 wd->sc_badsect[0] = -1; 1057 1058 if (wd->drvp->state > RESET) { 1059 s = splbio(); 1060 wd->drvp->drive_flags |= DRIVE_RESET; 1061 splx(s); 1062 } 1063 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1064 RAW_PART), wdstrategy, lp, 1065 wd->sc_dk.dk_cpulabel); 1066 if (errstring) { 1067 /* 1068 * This probably happened because the drive's default 1069 * geometry doesn't match the DOS geometry. We 1070 * assume the DOS geometry is now in the label and try 1071 * again. XXX This is a kluge. 1072 */ 1073 if (wd->drvp->state > RESET) { 1074 s = splbio(); 1075 wd->drvp->drive_flags |= DRIVE_RESET; 1076 splx(s); 1077 } 1078 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1079 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1080 } 1081 if (errstring) { 1082 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1083 return; 1084 } 1085 1086 if (wd->drvp->state > RESET) { 1087 s = splbio(); 1088 wd->drvp->drive_flags |= DRIVE_RESET; 1089 splx(s); 1090 } 1091 #ifdef HAS_BAD144_HANDLING 1092 if ((lp->d_flags & D_BADSECT) != 0) 1093 bad144intern(wd); 1094 #endif 1095 } 1096 1097 void 1098 wdperror(const struct wd_softc *wd) 1099 { 1100 static const char *const errstr0_3[] = {"address mark not found", 1101 "track 0 not found", "aborted command", "media change requested", 1102 "id not found", "media changed", "uncorrectable data error", 1103 "bad block detected"}; 1104 static const char *const errstr4_5[] = { 1105 "obsolete (address mark not found)", 1106 "no media/write protected", "aborted command", 1107 "media change requested", "id not found", "media changed", 1108 "uncorrectable data error", "interface CRC error"}; 1109 const char *const *errstr; 1110 int i; 1111 const char *sep = ""; 1112 1113 const char *devname = device_xname(wd->sc_dev); 1114 struct ata_drive_datas *drvp = wd->drvp; 1115 int errno = wd->sc_wdc_bio.r_error; 1116 1117 if (drvp->ata_vers >= 4) 1118 errstr = errstr4_5; 1119 else 1120 errstr = errstr0_3; 1121 1122 printf("%s: (", devname); 1123 1124 if (errno == 0) 1125 printf("error not notified"); 1126 1127 for (i = 0; i < 8; i++) { 1128 if (errno & (1 << i)) { 1129 printf("%s%s", sep, errstr[i]); 1130 sep = ", "; 1131 } 1132 } 1133 printf(")\n"); 1134 } 1135 1136 int 1137 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1138 { 1139 struct wd_softc *wd = 1140 device_lookup_private(&wd_cd, WDUNIT(dev)); 1141 int error = 0, s; 1142 #ifdef __HAVE_OLD_DISKLABEL 1143 struct disklabel *newlabel = NULL; 1144 #endif 1145 1146 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1147 1148 if ((wd->sc_flags & WDF_LOADED) == 0) 1149 return EIO; 1150 1151 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1152 if (error != EPASSTHROUGH) 1153 return (error); 1154 1155 switch (xfer) { 1156 #ifdef HAS_BAD144_HANDLING 1157 case DIOCSBAD: 1158 if ((flag & FWRITE) == 0) 1159 return EBADF; 1160 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1161 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1162 bad144intern(wd); 1163 return 0; 1164 #endif 1165 #ifdef WD_SOFTBADSECT 1166 case DIOCBSLIST : 1167 { 1168 u_int32_t count, missing, skip; 1169 struct disk_badsecinfo dbsi; 1170 struct disk_badsectors *dbs; 1171 size_t available; 1172 uint8_t *laddr; 1173 1174 dbsi = *(struct disk_badsecinfo *)addr; 1175 missing = wd->sc_bscount; 1176 count = 0; 1177 available = dbsi.dbsi_bufsize; 1178 skip = dbsi.dbsi_skip; 1179 laddr = (uint8_t *)dbsi.dbsi_buffer; 1180 1181 /* 1182 * We start this loop with the expectation that all of the 1183 * entries will be missed and decrement this counter each 1184 * time we either skip over one (already copied out) or 1185 * we actually copy it back to user space. The structs 1186 * holding the bad sector information are copied directly 1187 * back to user space whilst the summary is returned via 1188 * the struct passed in via the ioctl. 1189 */ 1190 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1191 if (skip > 0) { 1192 missing--; 1193 skip--; 1194 continue; 1195 } 1196 if (available < sizeof(*dbs)) 1197 break; 1198 available -= sizeof(*dbs); 1199 copyout(dbs, laddr, sizeof(*dbs)); 1200 laddr += sizeof(*dbs); 1201 missing--; 1202 count++; 1203 } 1204 dbsi.dbsi_left = missing; 1205 dbsi.dbsi_copied = count; 1206 *(struct disk_badsecinfo *)addr = dbsi; 1207 return 0; 1208 } 1209 1210 case DIOCBSFLUSH : 1211 /* Clean out the bad sector list */ 1212 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1213 void *head = SLIST_FIRST(&wd->sc_bslist); 1214 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1215 free(head, M_TEMP); 1216 } 1217 wd->sc_bscount = 0; 1218 return 0; 1219 #endif 1220 case DIOCGDINFO: 1221 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1222 return 0; 1223 #ifdef __HAVE_OLD_DISKLABEL 1224 case ODIOCGDINFO: 1225 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1226 if (newlabel == NULL) 1227 return EIO; 1228 *newlabel = *(wd->sc_dk.dk_label); 1229 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1230 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1231 else 1232 error = ENOTTY; 1233 free(newlabel, M_TEMP); 1234 return error; 1235 #endif 1236 1237 case DIOCGPART: 1238 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1239 ((struct partinfo *)addr)->part = 1240 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1241 return 0; 1242 1243 case DIOCWDINFO: 1244 case DIOCSDINFO: 1245 #ifdef __HAVE_OLD_DISKLABEL 1246 case ODIOCWDINFO: 1247 case ODIOCSDINFO: 1248 #endif 1249 { 1250 struct disklabel *lp; 1251 1252 if ((flag & FWRITE) == 0) 1253 return EBADF; 1254 1255 #ifdef __HAVE_OLD_DISKLABEL 1256 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1257 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1258 if (newlabel == NULL) 1259 return EIO; 1260 memset(newlabel, 0, sizeof newlabel); 1261 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1262 lp = newlabel; 1263 } else 1264 #endif 1265 lp = (struct disklabel *)addr; 1266 1267 mutex_enter(&wd->sc_dk.dk_openlock); 1268 wd->sc_flags |= WDF_LABELLING; 1269 1270 error = setdisklabel(wd->sc_dk.dk_label, 1271 lp, /*wd->sc_dk.dk_openmask : */0, 1272 wd->sc_dk.dk_cpulabel); 1273 if (error == 0) { 1274 if (wd->drvp->state > RESET) { 1275 s = splbio(); 1276 wd->drvp->drive_flags |= DRIVE_RESET; 1277 splx(s); 1278 } 1279 if (xfer == DIOCWDINFO 1280 #ifdef __HAVE_OLD_DISKLABEL 1281 || xfer == ODIOCWDINFO 1282 #endif 1283 ) 1284 error = writedisklabel(WDLABELDEV(dev), 1285 wdstrategy, wd->sc_dk.dk_label, 1286 wd->sc_dk.dk_cpulabel); 1287 } 1288 1289 wd->sc_flags &= ~WDF_LABELLING; 1290 mutex_exit(&wd->sc_dk.dk_openlock); 1291 #ifdef __HAVE_OLD_DISKLABEL 1292 if (newlabel != NULL) 1293 free(newlabel, M_TEMP); 1294 #endif 1295 return error; 1296 } 1297 1298 case DIOCKLABEL: 1299 if (*(int *)addr) 1300 wd->sc_flags |= WDF_KLABEL; 1301 else 1302 wd->sc_flags &= ~WDF_KLABEL; 1303 return 0; 1304 1305 case DIOCWLABEL: 1306 if ((flag & FWRITE) == 0) 1307 return EBADF; 1308 if (*(int *)addr) 1309 wd->sc_flags |= WDF_WLABEL; 1310 else 1311 wd->sc_flags &= ~WDF_WLABEL; 1312 return 0; 1313 1314 case DIOCGDEFLABEL: 1315 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1316 return 0; 1317 #ifdef __HAVE_OLD_DISKLABEL 1318 case ODIOCGDEFLABEL: 1319 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1320 if (newlabel == NULL) 1321 return EIO; 1322 wdgetdefaultlabel(wd, newlabel); 1323 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1324 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1325 else 1326 error = ENOTTY; 1327 free(newlabel, M_TEMP); 1328 return error; 1329 #endif 1330 1331 #ifdef notyet 1332 case DIOCWFORMAT: 1333 if ((flag & FWRITE) == 0) 1334 return EBADF; 1335 { 1336 register struct format_op *fop; 1337 struct iovec aiov; 1338 struct uio auio; 1339 1340 fop = (struct format_op *)addr; 1341 aiov.iov_base = fop->df_buf; 1342 aiov.iov_len = fop->df_count; 1343 auio.uio_iov = &aiov; 1344 auio.uio_iovcnt = 1; 1345 auio.uio_resid = fop->df_count; 1346 auio.uio_offset = 1347 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1348 auio.uio_vmspace = l->l_proc->p_vmspace; 1349 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1350 &auio); 1351 fop->df_count -= auio.uio_resid; 1352 fop->df_reg[0] = wdc->sc_status; 1353 fop->df_reg[1] = wdc->sc_error; 1354 return error; 1355 } 1356 #endif 1357 case DIOCGCACHE: 1358 return wd_getcache(wd, (int *)addr); 1359 1360 case DIOCSCACHE: 1361 return wd_setcache(wd, *(int *)addr); 1362 1363 case DIOCCACHESYNC: 1364 return wd_flushcache(wd, AT_WAIT); 1365 1366 case ATAIOCCOMMAND: 1367 /* 1368 * Make sure this command is (relatively) safe first 1369 */ 1370 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1371 (flag & FWRITE) == 0) 1372 return (EBADF); 1373 { 1374 struct wd_ioctl *wi; 1375 atareq_t *atareq = (atareq_t *) addr; 1376 int error1; 1377 1378 wi = wi_get(); 1379 wi->wi_softc = wd; 1380 wi->wi_atareq = *atareq; 1381 1382 if (atareq->datalen && atareq->flags & 1383 (ATACMD_READ | ATACMD_WRITE)) { 1384 void *tbuf; 1385 if (atareq->datalen < DEV_BSIZE 1386 && atareq->command == WDCC_IDENTIFY) { 1387 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1388 wi->wi_iov.iov_base = tbuf; 1389 wi->wi_iov.iov_len = DEV_BSIZE; 1390 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1391 } else { 1392 tbuf = NULL; 1393 wi->wi_iov.iov_base = atareq->databuf; 1394 wi->wi_iov.iov_len = atareq->datalen; 1395 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1396 } 1397 wi->wi_uio.uio_iov = &wi->wi_iov; 1398 wi->wi_uio.uio_iovcnt = 1; 1399 wi->wi_uio.uio_resid = atareq->datalen; 1400 wi->wi_uio.uio_offset = 0; 1401 wi->wi_uio.uio_rw = 1402 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1403 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1404 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1405 minphys, &wi->wi_uio); 1406 if (tbuf != NULL && error1 == 0) { 1407 error1 = copyout(tbuf, atareq->databuf, 1408 atareq->datalen); 1409 free(tbuf, M_TEMP); 1410 } 1411 } else { 1412 /* No need to call physio if we don't have any 1413 user data */ 1414 wi->wi_bp.b_flags = 0; 1415 wi->wi_bp.b_data = 0; 1416 wi->wi_bp.b_bcount = 0; 1417 wi->wi_bp.b_dev = 0; 1418 wi->wi_bp.b_proc = l->l_proc; 1419 wdioctlstrategy(&wi->wi_bp); 1420 error1 = wi->wi_bp.b_error; 1421 } 1422 *atareq = wi->wi_atareq; 1423 wi_free(wi); 1424 return(error1); 1425 } 1426 1427 case DIOCAWEDGE: 1428 { 1429 struct dkwedge_info *dkw = (void *) addr; 1430 1431 if ((flag & FWRITE) == 0) 1432 return (EBADF); 1433 1434 /* If the ioctl happens here, the parent is us. */ 1435 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1436 return (dkwedge_add(dkw)); 1437 } 1438 1439 case DIOCDWEDGE: 1440 { 1441 struct dkwedge_info *dkw = (void *) addr; 1442 1443 if ((flag & FWRITE) == 0) 1444 return (EBADF); 1445 1446 /* If the ioctl happens here, the parent is us. */ 1447 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1448 return (dkwedge_del(dkw)); 1449 } 1450 1451 case DIOCLWEDGES: 1452 { 1453 struct dkwedge_list *dkwl = (void *) addr; 1454 1455 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1456 } 1457 1458 case DIOCGSTRATEGY: 1459 { 1460 struct disk_strategy *dks = (void *)addr; 1461 1462 s = splbio(); 1463 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1464 sizeof(dks->dks_name)); 1465 splx(s); 1466 dks->dks_paramlen = 0; 1467 1468 return 0; 1469 } 1470 1471 case DIOCSSTRATEGY: 1472 { 1473 struct disk_strategy *dks = (void *)addr; 1474 struct bufq_state *new; 1475 struct bufq_state *old; 1476 1477 if ((flag & FWRITE) == 0) { 1478 return EBADF; 1479 } 1480 if (dks->dks_param != NULL) { 1481 return EINVAL; 1482 } 1483 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1484 error = bufq_alloc(&new, dks->dks_name, 1485 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1486 if (error) { 1487 return error; 1488 } 1489 s = splbio(); 1490 old = wd->sc_q; 1491 bufq_move(new, old); 1492 wd->sc_q = new; 1493 splx(s); 1494 bufq_free(old); 1495 1496 return 0; 1497 } 1498 1499 default: 1500 return ENOTTY; 1501 } 1502 1503 #ifdef DIAGNOSTIC 1504 panic("wdioctl: impossible"); 1505 #endif 1506 } 1507 1508 #ifdef B_FORMAT 1509 int 1510 wdformat(struct buf *bp) 1511 { 1512 1513 bp->b_flags |= B_FORMAT; 1514 return wdstrategy(bp); 1515 } 1516 #endif 1517 1518 int 1519 wdsize(dev_t dev) 1520 { 1521 struct wd_softc *wd; 1522 int part, omask; 1523 int size; 1524 1525 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1526 1527 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1528 if (wd == NULL) 1529 return (-1); 1530 1531 part = WDPART(dev); 1532 omask = wd->sc_dk.dk_openmask & (1 << part); 1533 1534 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1535 return (-1); 1536 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1537 size = -1; 1538 else 1539 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1540 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1541 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1542 return (-1); 1543 return (size); 1544 } 1545 1546 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1547 static int wddoingadump = 0; 1548 static int wddumprecalibrated = 0; 1549 1550 /* 1551 * Dump core after a system crash. 1552 */ 1553 int 1554 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1555 { 1556 struct wd_softc *wd; /* disk unit to do the I/O */ 1557 struct disklabel *lp; /* disk's disklabel */ 1558 int part, err; 1559 int nblks; /* total number of sectors left to write */ 1560 1561 /* Check if recursive dump; if so, punt. */ 1562 if (wddoingadump) 1563 return EFAULT; 1564 wddoingadump = 1; 1565 1566 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1567 if (wd == NULL) 1568 return (ENXIO); 1569 1570 part = WDPART(dev); 1571 1572 /* Convert to disk sectors. Request must be a multiple of size. */ 1573 lp = wd->sc_dk.dk_label; 1574 if ((size % lp->d_secsize) != 0) 1575 return EFAULT; 1576 nblks = size / lp->d_secsize; 1577 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1578 1579 /* Check transfer bounds against partition size. */ 1580 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1581 return EINVAL; 1582 1583 /* Offset block number to start of partition. */ 1584 blkno += lp->d_partitions[part].p_offset; 1585 1586 /* Recalibrate, if first dump transfer. */ 1587 if (wddumprecalibrated == 0) { 1588 wddumprecalibrated = 1; 1589 (*wd->atabus->ata_reset_drive)(wd->drvp, 1590 AT_POLL | AT_RST_EMERG); 1591 wd->drvp->state = RESET; 1592 } 1593 1594 wd->sc_bp = NULL; 1595 wd->sc_wdc_bio.blkno = blkno; 1596 wd->sc_wdc_bio.flags = ATA_POLL; 1597 if (wd->sc_flags & WDF_LBA48 && 1598 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1599 wd->sc_wdc_bio.flags |= ATA_LBA48; 1600 if (wd->sc_flags & WDF_LBA) 1601 wd->sc_wdc_bio.flags |= ATA_LBA; 1602 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1603 wd->sc_wdc_bio.databuf = va; 1604 #ifndef WD_DUMP_NOT_TRUSTED 1605 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1606 case ATACMD_TRY_AGAIN: 1607 panic("wddump: try again"); 1608 break; 1609 case ATACMD_QUEUED: 1610 panic("wddump: polled command has been queued"); 1611 break; 1612 case ATACMD_COMPLETE: 1613 break; 1614 } 1615 switch(wd->sc_wdc_bio.error) { 1616 case TIMEOUT: 1617 printf("wddump: device timed out"); 1618 err = EIO; 1619 break; 1620 case ERR_DF: 1621 printf("wddump: drive fault"); 1622 err = EIO; 1623 break; 1624 case ERR_DMA: 1625 printf("wddump: DMA error"); 1626 err = EIO; 1627 break; 1628 case ERROR: 1629 printf("wddump: "); 1630 wdperror(wd); 1631 err = EIO; 1632 break; 1633 case NOERROR: 1634 err = 0; 1635 break; 1636 default: 1637 panic("wddump: unknown error type"); 1638 } 1639 if (err != 0) { 1640 printf("\n"); 1641 return err; 1642 } 1643 #else /* WD_DUMP_NOT_TRUSTED */ 1644 /* Let's just talk about this first... */ 1645 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1646 unit, va, cylin, head, sector); 1647 delay(500 * 1000); /* half a second */ 1648 #endif 1649 1650 wddoingadump = 0; 1651 return 0; 1652 } 1653 1654 #ifdef HAS_BAD144_HANDLING 1655 /* 1656 * Internalize the bad sector table. 1657 */ 1658 void 1659 bad144intern(struct wd_softc *wd) 1660 { 1661 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1662 struct disklabel *lp = wd->sc_dk.dk_label; 1663 int i = 0; 1664 1665 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1666 1667 for (; i < NBT_BAD; i++) { 1668 if (bt->bt_bad[i].bt_cyl == 0xffff) 1669 break; 1670 wd->sc_badsect[i] = 1671 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1672 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1673 (bt->bt_bad[i].bt_trksec & 0xff); 1674 } 1675 for (; i < NBT_BAD+1; i++) 1676 wd->sc_badsect[i] = -1; 1677 } 1678 #endif 1679 1680 static void 1681 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1682 { 1683 prop_dictionary_t disk_info, odisk_info, geom; 1684 const char *cp; 1685 1686 disk_info = prop_dictionary_create(); 1687 1688 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1689 cp = "ST506"; 1690 else { 1691 /* XXX Should have a case for ATA here, too. */ 1692 cp = "ESDI"; 1693 } 1694 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1695 1696 geom = prop_dictionary_create(); 1697 1698 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1699 1700 prop_dictionary_set_uint32(geom, "sector-size", 1701 DEV_BSIZE /* XXX 512? */); 1702 1703 prop_dictionary_set_uint16(geom, "sectors-per-track", 1704 wd->sc_params.atap_sectors); 1705 1706 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1707 wd->sc_params.atap_heads); 1708 1709 if (wd->sc_flags & WDF_LBA) 1710 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1711 wd->sc_capacity / 1712 (wd->sc_params.atap_heads * 1713 wd->sc_params.atap_sectors)); 1714 else 1715 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1716 wd->sc_params.atap_cylinders); 1717 1718 prop_dictionary_set(disk_info, "geometry", geom); 1719 prop_object_release(geom); 1720 1721 prop_dictionary_set(device_properties(wd->sc_dev), 1722 "disk-info", disk_info); 1723 1724 /* 1725 * Don't release disk_info here; we keep a reference to it. 1726 * disk_detach() will release it when we go away. 1727 */ 1728 1729 odisk_info = wd->sc_dk.dk_info; 1730 wd->sc_dk.dk_info = disk_info; 1731 if (odisk_info) 1732 prop_object_release(odisk_info); 1733 } 1734 1735 int 1736 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1737 { 1738 1739 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1740 case CMD_AGAIN: 1741 return 1; 1742 case CMD_ERR: 1743 /* 1744 * We `know' there's a drive here; just assume it's old. 1745 * This geometry is only used to read the MBR and print a 1746 * (false) attach message. 1747 */ 1748 strncpy(params->atap_model, "ST506", 1749 sizeof params->atap_model); 1750 params->atap_config = ATA_CFG_FIXED; 1751 params->atap_cylinders = 1024; 1752 params->atap_heads = 8; 1753 params->atap_sectors = 17; 1754 params->atap_multi = 1; 1755 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1756 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1757 /* FALLTHROUGH */ 1758 case CMD_OK: 1759 wd_params_to_properties(wd, params); 1760 return 0; 1761 default: 1762 panic("wd_get_params: bad return code from ata_get_params"); 1763 /* NOTREACHED */ 1764 } 1765 } 1766 1767 int 1768 wd_getcache(struct wd_softc *wd, int *bitsp) 1769 { 1770 struct ataparams params; 1771 1772 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1773 return EIO; 1774 if (params.atap_cmd_set1 == 0x0000 || 1775 params.atap_cmd_set1 == 0xffff || 1776 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1777 *bitsp = 0; 1778 return 0; 1779 } 1780 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1781 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1782 *bitsp |= DKCACHE_WRITE; 1783 1784 return 0; 1785 } 1786 1787 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1788 1789 int 1790 wd_setcache(struct wd_softc *wd, int bits) 1791 { 1792 struct ataparams params; 1793 struct ata_command ata_c; 1794 1795 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1796 return EIO; 1797 1798 if (params.atap_cmd_set1 == 0x0000 || 1799 params.atap_cmd_set1 == 0xffff || 1800 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1801 return EOPNOTSUPP; 1802 1803 if ((bits & DKCACHE_READ) == 0 || 1804 (bits & DKCACHE_SAVE) != 0) 1805 return EOPNOTSUPP; 1806 1807 memset(&ata_c, 0, sizeof(struct ata_command)); 1808 ata_c.r_command = SET_FEATURES; 1809 ata_c.r_st_bmask = 0; 1810 ata_c.r_st_pmask = 0; 1811 ata_c.timeout = 30000; /* 30s timeout */ 1812 ata_c.flags = AT_WAIT; 1813 if (bits & DKCACHE_WRITE) 1814 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1815 else 1816 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1817 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1818 aprint_error_dev(wd->sc_dev, 1819 "wd_setcache command not complete\n"); 1820 return EIO; 1821 } 1822 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1823 char sbuf[sizeof(at_errbits) + 64]; 1824 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1825 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1826 return EIO; 1827 } 1828 return 0; 1829 } 1830 1831 static int 1832 wd_standby(struct wd_softc *wd, int flags) 1833 { 1834 struct ata_command ata_c; 1835 1836 memset(&ata_c, 0, sizeof(struct ata_command)); 1837 ata_c.r_command = WDCC_STANDBY_IMMED; 1838 ata_c.r_st_bmask = WDCS_DRDY; 1839 ata_c.r_st_pmask = WDCS_DRDY; 1840 ata_c.flags = flags; 1841 ata_c.timeout = 30000; /* 30s timeout */ 1842 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1843 aprint_error_dev(wd->sc_dev, 1844 "standby immediate command didn't complete\n"); 1845 return EIO; 1846 } 1847 if (ata_c.flags & AT_ERROR) { 1848 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1849 return ENODEV; 1850 } 1851 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1852 char sbuf[sizeof(at_errbits) + 64]; 1853 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1854 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1855 return EIO; 1856 } 1857 return 0; 1858 } 1859 1860 int 1861 wd_flushcache(struct wd_softc *wd, int flags) 1862 { 1863 struct ata_command ata_c; 1864 1865 /* 1866 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1867 * only ATA-2 and still support it. 1868 */ 1869 if (wd->drvp->ata_vers < 4 && 1870 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1871 wd->sc_params.atap_cmd_set2 == 0xffff)) 1872 return ENODEV; 1873 memset(&ata_c, 0, sizeof(struct ata_command)); 1874 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1875 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1876 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1877 else 1878 ata_c.r_command = WDCC_FLUSHCACHE; 1879 ata_c.r_st_bmask = WDCS_DRDY; 1880 ata_c.r_st_pmask = WDCS_DRDY; 1881 ata_c.flags = flags; 1882 ata_c.timeout = 30000; /* 30s timeout */ 1883 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1884 aprint_error_dev(wd->sc_dev, 1885 "flush cache command didn't complete\n"); 1886 return EIO; 1887 } 1888 if (ata_c.flags & AT_ERROR) { 1889 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1890 return ENODEV; 1891 } 1892 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1893 char sbuf[sizeof(at_errbits) + 64]; 1894 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1895 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1896 sbuf); 1897 return EIO; 1898 } 1899 return 0; 1900 } 1901 1902 bool 1903 wd_shutdown(device_t dev, int how) 1904 { 1905 struct wd_softc *wd = device_private(dev); 1906 1907 /* the adapter needs to be enabled */ 1908 if (wd->atabus->ata_addref(wd->drvp)) 1909 return true; /* no need to complain */ 1910 1911 wd_flushcache(wd, AT_POLL); 1912 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1913 wd_standby(wd, AT_POLL); 1914 return true; 1915 } 1916 1917 /* 1918 * Allocate space for a ioctl queue structure. Mostly taken from 1919 * scsipi_ioctl.c 1920 */ 1921 struct wd_ioctl * 1922 wi_get(void) 1923 { 1924 struct wd_ioctl *wi; 1925 int s; 1926 1927 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1928 buf_init(&wi->wi_bp); 1929 s = splbio(); 1930 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1931 splx(s); 1932 return (wi); 1933 } 1934 1935 /* 1936 * Free an ioctl structure and remove it from our list 1937 */ 1938 1939 void 1940 wi_free(struct wd_ioctl *wi) 1941 { 1942 int s; 1943 1944 s = splbio(); 1945 LIST_REMOVE(wi, wi_list); 1946 splx(s); 1947 buf_destroy(&wi->wi_bp); 1948 free(wi, M_TEMP); 1949 } 1950 1951 /* 1952 * Find a wd_ioctl structure based on the struct buf. 1953 */ 1954 1955 struct wd_ioctl * 1956 wi_find(struct buf *bp) 1957 { 1958 struct wd_ioctl *wi; 1959 int s; 1960 1961 s = splbio(); 1962 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1963 if (bp == &wi->wi_bp) 1964 break; 1965 splx(s); 1966 return (wi); 1967 } 1968 1969 /* 1970 * Ioctl pseudo strategy routine 1971 * 1972 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1973 * happens here is: 1974 * 1975 * - wdioctl() queues a wd_ioctl structure. 1976 * 1977 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1978 * user space I/O is required. If physio() is called, physio() eventually 1979 * calls wdioctlstrategy(). 1980 * 1981 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1982 * to perform the actual command 1983 * 1984 * The reason for the use of the pseudo strategy routine is because 1985 * when doing I/O to/from user space, physio _really_ wants to be in 1986 * the loop. We could put the entire buffer into the ioctl request 1987 * structure, but that won't scale if we want to do things like download 1988 * microcode. 1989 */ 1990 1991 void 1992 wdioctlstrategy(struct buf *bp) 1993 { 1994 struct wd_ioctl *wi; 1995 struct ata_command ata_c; 1996 int error = 0; 1997 1998 wi = wi_find(bp); 1999 if (wi == NULL) { 2000 printf("wdioctlstrategy: " 2001 "No matching ioctl request found in queue\n"); 2002 error = EINVAL; 2003 goto bad; 2004 } 2005 2006 memset(&ata_c, 0, sizeof(ata_c)); 2007 2008 /* 2009 * Abort if physio broke up the transfer 2010 */ 2011 2012 if (bp->b_bcount != wi->wi_atareq.datalen) { 2013 printf("physio split wd ioctl request... cannot proceed\n"); 2014 error = EIO; 2015 goto bad; 2016 } 2017 2018 /* 2019 * Abort if we didn't get a buffer size that was a multiple of 2020 * our sector size (or was larger than NBBY) 2021 */ 2022 2023 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2024 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2025 (1 << NBBY)) { 2026 error = EINVAL; 2027 goto bad; 2028 } 2029 2030 /* 2031 * Make sure a timeout was supplied in the ioctl request 2032 */ 2033 2034 if (wi->wi_atareq.timeout == 0) { 2035 error = EINVAL; 2036 goto bad; 2037 } 2038 2039 if (wi->wi_atareq.flags & ATACMD_READ) 2040 ata_c.flags |= AT_READ; 2041 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2042 ata_c.flags |= AT_WRITE; 2043 2044 if (wi->wi_atareq.flags & ATACMD_READREG) 2045 ata_c.flags |= AT_READREG; 2046 2047 ata_c.flags |= AT_WAIT; 2048 2049 ata_c.timeout = wi->wi_atareq.timeout; 2050 ata_c.r_command = wi->wi_atareq.command; 2051 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2052 ata_c.r_cyl = wi->wi_atareq.cylinder; 2053 ata_c.r_sector = wi->wi_atareq.sec_num; 2054 ata_c.r_count = wi->wi_atareq.sec_count; 2055 ata_c.r_features = wi->wi_atareq.features; 2056 ata_c.r_st_bmask = WDCS_DRDY; 2057 ata_c.r_st_pmask = WDCS_DRDY; 2058 ata_c.data = wi->wi_bp.b_data; 2059 ata_c.bcount = wi->wi_bp.b_bcount; 2060 2061 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2062 != ATACMD_COMPLETE) { 2063 wi->wi_atareq.retsts = ATACMD_ERROR; 2064 goto bad; 2065 } 2066 2067 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2068 if (ata_c.flags & AT_ERROR) { 2069 wi->wi_atareq.retsts = ATACMD_ERROR; 2070 wi->wi_atareq.error = ata_c.r_error; 2071 } else if (ata_c.flags & AT_DF) 2072 wi->wi_atareq.retsts = ATACMD_DF; 2073 else 2074 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2075 } else { 2076 wi->wi_atareq.retsts = ATACMD_OK; 2077 if (wi->wi_atareq.flags & ATACMD_READREG) { 2078 wi->wi_atareq.head = ata_c.r_head ; 2079 wi->wi_atareq.cylinder = ata_c.r_cyl; 2080 wi->wi_atareq.sec_num = ata_c.r_sector; 2081 wi->wi_atareq.sec_count = ata_c.r_count; 2082 wi->wi_atareq.features = ata_c.r_features; 2083 wi->wi_atareq.error = ata_c.r_error; 2084 } 2085 } 2086 2087 bp->b_error = 0; 2088 biodone(bp); 2089 return; 2090 bad: 2091 bp->b_error = error; 2092 biodone(bp); 2093 } 2094
Indexes created Sun Oct 19 02:09:48 GMT 2025