wd.c revision 1.363.8.3
1 /* $NetBSD: wd.c,v 1.363.8.3 2010/01/10 23:59:30 snj 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 1.363.8.3 2010/01/10 23:59:30 snj 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)); 616 617 if (__predict_false(bp->b_error != 0)) { 618 /* 619 * Propagate the error. If this was the first half of 620 * the original transfer, make sure to account for that 621 * in the residual. 622 */ 623 if (bp->b_data == obp->b_data) 624 bp->b_resid += bp->b_bcount; 625 goto done; 626 } 627 628 /* 629 * If this was the second half of the transfer, we're all done! 630 */ 631 if (bp->b_data != obp->b_data) 632 goto done; 633 634 /* 635 * Advance the pointer to the second half and issue that command 636 * using the same opening. 637 */ 638 bp->b_flags = obp->b_flags; 639 bp->b_oflags = obp->b_oflags; 640 bp->b_cflags = obp->b_cflags; 641 bp->b_data = (char *)bp->b_data + bp->b_bcount; 642 bp->b_blkno += (bp->b_bcount / 512); 643 bp->b_rawblkno += (bp->b_bcount / 512); 644 __wdstart(sc, bp); 645 return; 646 647 done: 648 obp->b_error = bp->b_error; 649 obp->b_resid = bp->b_resid; 650 putiobuf(bp); 651 biodone(obp); 652 sc->openings++; 653 /* wddone() will call wdstart() */ 654 } 655 656 void 657 __wdstart(struct wd_softc *wd, struct buf *bp) 658 { 659 660 /* 661 * Deal with the "split mod15 write" quirk. We just divide the 662 * transfer in two, doing the first half and then then second half 663 * with the same command opening. 664 * 665 * Note we MUST do this here, because we can't let insertion 666 * into the bufq cause the transfers to be re-merged. 667 */ 668 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 669 (bp->b_flags & B_READ) == 0 && 670 bp->b_bcount > 512 && 671 ((bp->b_bcount / 512) % 15) == 1)) { 672 struct buf *nbp; 673 674 /* already at splbio */ 675 nbp = getiobuf(NULL, false); 676 if (__predict_false(nbp == NULL)) { 677 /* No memory -- fail the iop. */ 678 bp->b_error = ENOMEM; 679 bp->b_resid = bp->b_bcount; 680 biodone(bp); 681 wd->openings++; 682 return; 683 } 684 685 nbp->b_error = 0; 686 nbp->b_proc = bp->b_proc; 687 nbp->b_dev = bp->b_dev; 688 689 nbp->b_bcount = bp->b_bcount / 2; 690 nbp->b_bufsize = bp->b_bcount / 2; 691 nbp->b_data = bp->b_data; 692 693 nbp->b_blkno = bp->b_blkno; 694 nbp->b_rawblkno = bp->b_rawblkno; 695 696 nbp->b_flags = bp->b_flags; 697 nbp->b_oflags = bp->b_oflags; 698 nbp->b_cflags = bp->b_cflags; 699 nbp->b_iodone = wd_split_mod15_write; 700 701 /* Put ptr to orig buf in b_private and use new buf */ 702 nbp->b_private = bp; 703 704 BIO_COPYPRIO(nbp, bp); 705 706 bp = nbp; 707 } 708 709 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 710 wd->sc_wdc_bio.bcount = bp->b_bcount; 711 wd->sc_wdc_bio.databuf = bp->b_data; 712 wd->sc_wdc_bio.blkdone =0; 713 wd->sc_bp = bp; 714 /* 715 * If we're retrying, retry in single-sector mode. This will give us 716 * the sector number of the problem, and will eventually allow the 717 * transfer to succeed. 718 */ 719 if (wd->retries >= WDIORETRIES_SINGLE) 720 wd->sc_wdc_bio.flags = ATA_SINGLE; 721 else 722 wd->sc_wdc_bio.flags = 0; 723 if (wd->sc_flags & WDF_LBA48 && 724 (wd->sc_wdc_bio.blkno + 725 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 726 wd->sc_capacity28) 727 wd->sc_wdc_bio.flags |= ATA_LBA48; 728 if (wd->sc_flags & WDF_LBA) 729 wd->sc_wdc_bio.flags |= ATA_LBA; 730 if (bp->b_flags & B_READ) 731 wd->sc_wdc_bio.flags |= ATA_READ; 732 /* Instrumentation. */ 733 disk_busy(&wd->sc_dk); 734 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 735 case ATACMD_TRY_AGAIN: 736 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 737 break; 738 case ATACMD_QUEUED: 739 case ATACMD_COMPLETE: 740 break; 741 default: 742 panic("__wdstart: bad return code from ata_bio()"); 743 } 744 } 745 746 void 747 wddone(void *v) 748 { 749 struct wd_softc *wd = device_private(v); 750 struct buf *bp = wd->sc_bp; 751 const char *errmsg; 752 int do_perror = 0; 753 754 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 755 DEBUG_XFERS); 756 if (bp == NULL) 757 return; 758 bp->b_resid = wd->sc_wdc_bio.bcount; 759 switch (wd->sc_wdc_bio.error) { 760 case ERR_DMA: 761 errmsg = "DMA error"; 762 goto retry; 763 case ERR_DF: 764 errmsg = "device fault"; 765 goto retry; 766 case TIMEOUT: 767 errmsg = "device timeout"; 768 goto retry; 769 case ERR_RESET: 770 errmsg = "channel reset"; 771 goto retry2; 772 case ERROR: 773 /* Don't care about media change bits */ 774 if (wd->sc_wdc_bio.r_error != 0 && 775 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 776 goto noerror; 777 errmsg = "error"; 778 do_perror = 1; 779 retry: /* Just reset and retry. Can we do more ? */ 780 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 781 retry2: 782 diskerr(bp, "wd", errmsg, LOG_PRINTF, 783 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 784 if (wd->retries < WDIORETRIES) 785 printf(", retrying"); 786 printf("\n"); 787 if (do_perror) 788 wdperror(wd); 789 if (wd->retries < WDIORETRIES) { 790 wd->retries++; 791 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 792 wdrestart, wd); 793 return; 794 } 795 796 #ifdef WD_SOFTBADSECT 797 /* 798 * Not all errors indicate a failed block but those that do, 799 * put the block on the bad-block list for the device. Only 800 * do this for reads because the drive should do it for writes, 801 * itself, according to Manuel. 802 */ 803 if ((bp->b_flags & B_READ) && 804 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 805 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 806 struct disk_badsectors *dbs; 807 808 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 809 dbs->dbs_min = bp->b_rawblkno; 810 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 811 microtime(&dbs->dbs_failedat); 812 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 813 wd->sc_bscount++; 814 } 815 #endif 816 bp->b_error = EIO; 817 break; 818 case NOERROR: 819 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 820 aprint_error_dev(wd->sc_dev, 821 "soft error (corrected)\n"); 822 break; 823 case ERR_NODEV: 824 bp->b_error = EIO; 825 break; 826 } 827 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 828 (bp->b_flags & B_READ)); 829 #if NRND > 0 830 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 831 #endif 832 /* XXX Yuck, but we don't want to increment openings in this case */ 833 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 834 biodone(bp); 835 else { 836 biodone(bp); 837 wd->openings++; 838 } 839 wdstart(wd); 840 } 841 842 void 843 wdrestart(void *v) 844 { 845 struct wd_softc *wd = v; 846 struct buf *bp = wd->sc_bp; 847 int s; 848 849 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 850 DEBUG_XFERS); 851 s = splbio(); 852 __wdstart(v, bp); 853 splx(s); 854 } 855 856 int 857 wdread(dev_t dev, struct uio *uio, int flags) 858 { 859 860 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 861 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 862 } 863 864 int 865 wdwrite(dev_t dev, struct uio *uio, int flags) 866 { 867 868 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 869 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 870 } 871 872 int 873 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 874 { 875 struct wd_softc *wd; 876 int part, error; 877 878 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 879 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 880 if (wd == NULL) 881 return (ENXIO); 882 883 if (! device_is_active(wd->sc_dev)) 884 return (ENODEV); 885 886 part = WDPART(dev); 887 888 mutex_enter(&wd->sc_dk.dk_openlock); 889 890 /* 891 * If there are wedges, and this is not RAW_PART, then we 892 * need to fail. 893 */ 894 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 895 error = EBUSY; 896 goto bad1; 897 } 898 899 /* 900 * If this is the first open of this device, add a reference 901 * to the adapter. 902 */ 903 if (wd->sc_dk.dk_openmask == 0 && 904 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 905 goto bad1; 906 907 if (wd->sc_dk.dk_openmask != 0) { 908 /* 909 * If any partition is open, but the disk has been invalidated, 910 * disallow further opens. 911 */ 912 if ((wd->sc_flags & WDF_LOADED) == 0) { 913 error = EIO; 914 goto bad2; 915 } 916 } else { 917 if ((wd->sc_flags & WDF_LOADED) == 0) { 918 wd->sc_flags |= WDF_LOADED; 919 920 /* Load the physical device parameters. */ 921 wd_get_params(wd, AT_WAIT, &wd->sc_params); 922 923 /* Load the partition info if not already loaded. */ 924 wdgetdisklabel(wd); 925 } 926 } 927 928 /* Check that the partition exists. */ 929 if (part != RAW_PART && 930 (part >= wd->sc_dk.dk_label->d_npartitions || 931 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 932 error = ENXIO; 933 goto bad2; 934 } 935 936 /* Insure only one open at a time. */ 937 switch (fmt) { 938 case S_IFCHR: 939 wd->sc_dk.dk_copenmask |= (1 << part); 940 break; 941 case S_IFBLK: 942 wd->sc_dk.dk_bopenmask |= (1 << part); 943 break; 944 } 945 wd->sc_dk.dk_openmask = 946 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 947 948 mutex_exit(&wd->sc_dk.dk_openlock); 949 return 0; 950 951 bad2: 952 if (wd->sc_dk.dk_openmask == 0) 953 wd->atabus->ata_delref(wd->drvp); 954 bad1: 955 mutex_exit(&wd->sc_dk.dk_openlock); 956 return error; 957 } 958 959 int 960 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 961 { 962 struct wd_softc *wd = 963 device_lookup_private(&wd_cd, WDUNIT(dev)); 964 int part = WDPART(dev); 965 966 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 967 968 mutex_enter(&wd->sc_dk.dk_openlock); 969 970 switch (fmt) { 971 case S_IFCHR: 972 wd->sc_dk.dk_copenmask &= ~(1 << part); 973 break; 974 case S_IFBLK: 975 wd->sc_dk.dk_bopenmask &= ~(1 << part); 976 break; 977 } 978 wd->sc_dk.dk_openmask = 979 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 980 981 if (wd->sc_dk.dk_openmask == 0) { 982 wd_flushcache(wd, AT_WAIT); 983 984 if (! (wd->sc_flags & WDF_KLABEL)) 985 wd->sc_flags &= ~WDF_LOADED; 986 987 wd->atabus->ata_delref(wd->drvp); 988 } 989 990 mutex_exit(&wd->sc_dk.dk_openlock); 991 return 0; 992 } 993 994 void 995 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 996 { 997 998 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 999 memset(lp, 0, sizeof(struct disklabel)); 1000 1001 lp->d_secsize = DEV_BSIZE; 1002 lp->d_ntracks = wd->sc_params.atap_heads; 1003 lp->d_nsectors = wd->sc_params.atap_sectors; 1004 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1005 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1006 wd->sc_params.atap_cylinders; 1007 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1008 1009 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1010 lp->d_type = DTYPE_ST506; 1011 else 1012 lp->d_type = DTYPE_ESDI; 1013 1014 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1015 strncpy(lp->d_packname, "fictitious", 16); 1016 if (wd->sc_capacity > UINT32_MAX) 1017 lp->d_secperunit = UINT32_MAX; 1018 else 1019 lp->d_secperunit = wd->sc_capacity; 1020 lp->d_rpm = 3600; 1021 lp->d_interleave = 1; 1022 lp->d_flags = 0; 1023 1024 lp->d_partitions[RAW_PART].p_offset = 0; 1025 lp->d_partitions[RAW_PART].p_size = 1026 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1027 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1028 lp->d_npartitions = RAW_PART + 1; 1029 1030 lp->d_magic = DISKMAGIC; 1031 lp->d_magic2 = DISKMAGIC; 1032 lp->d_checksum = dkcksum(lp); 1033 } 1034 1035 /* 1036 * Fabricate a default disk label, and try to read the correct one. 1037 */ 1038 void 1039 wdgetdisklabel(struct wd_softc *wd) 1040 { 1041 struct disklabel *lp = wd->sc_dk.dk_label; 1042 const char *errstring; 1043 int s; 1044 1045 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1046 1047 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1048 1049 wdgetdefaultlabel(wd, lp); 1050 1051 wd->sc_badsect[0] = -1; 1052 1053 if (wd->drvp->state > RESET) { 1054 s = splbio(); 1055 wd->drvp->drive_flags |= DRIVE_RESET; 1056 splx(s); 1057 } 1058 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1059 RAW_PART), wdstrategy, lp, 1060 wd->sc_dk.dk_cpulabel); 1061 if (errstring) { 1062 /* 1063 * This probably happened because the drive's default 1064 * geometry doesn't match the DOS geometry. We 1065 * assume the DOS geometry is now in the label and try 1066 * again. XXX This is a kluge. 1067 */ 1068 if (wd->drvp->state > RESET) { 1069 s = splbio(); 1070 wd->drvp->drive_flags |= DRIVE_RESET; 1071 splx(s); 1072 } 1073 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1074 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1075 } 1076 if (errstring) { 1077 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1078 return; 1079 } 1080 1081 if (wd->drvp->state > RESET) { 1082 s = splbio(); 1083 wd->drvp->drive_flags |= DRIVE_RESET; 1084 splx(s); 1085 } 1086 #ifdef HAS_BAD144_HANDLING 1087 if ((lp->d_flags & D_BADSECT) != 0) 1088 bad144intern(wd); 1089 #endif 1090 } 1091 1092 void 1093 wdperror(const struct wd_softc *wd) 1094 { 1095 static const char *const errstr0_3[] = {"address mark not found", 1096 "track 0 not found", "aborted command", "media change requested", 1097 "id not found", "media changed", "uncorrectable data error", 1098 "bad block detected"}; 1099 static const char *const errstr4_5[] = { 1100 "obsolete (address mark not found)", 1101 "no media/write protected", "aborted command", 1102 "media change requested", "id not found", "media changed", 1103 "uncorrectable data error", "interface CRC error"}; 1104 const char *const *errstr; 1105 int i; 1106 const char *sep = ""; 1107 1108 const char *devname = device_xname(wd->sc_dev); 1109 struct ata_drive_datas *drvp = wd->drvp; 1110 int errno = wd->sc_wdc_bio.r_error; 1111 1112 if (drvp->ata_vers >= 4) 1113 errstr = errstr4_5; 1114 else 1115 errstr = errstr0_3; 1116 1117 printf("%s: (", devname); 1118 1119 if (errno == 0) 1120 printf("error not notified"); 1121 1122 for (i = 0; i < 8; i++) { 1123 if (errno & (1 << i)) { 1124 printf("%s%s", sep, errstr[i]); 1125 sep = ", "; 1126 } 1127 } 1128 printf(")\n"); 1129 } 1130 1131 int 1132 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1133 { 1134 struct wd_softc *wd = 1135 device_lookup_private(&wd_cd, WDUNIT(dev)); 1136 int error = 0, s; 1137 #ifdef __HAVE_OLD_DISKLABEL 1138 struct disklabel *newlabel = NULL; 1139 #endif 1140 1141 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1142 1143 if ((wd->sc_flags & WDF_LOADED) == 0) 1144 return EIO; 1145 1146 error = disk_ioctl(&wd->sc_dk, xfer, addr, flag, l); 1147 if (error != EPASSTHROUGH) 1148 return (error); 1149 1150 switch (xfer) { 1151 #ifdef HAS_BAD144_HANDLING 1152 case DIOCSBAD: 1153 if ((flag & FWRITE) == 0) 1154 return EBADF; 1155 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1156 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1157 bad144intern(wd); 1158 return 0; 1159 #endif 1160 #ifdef WD_SOFTBADSECT 1161 case DIOCBSLIST : 1162 { 1163 u_int32_t count, missing, skip; 1164 struct disk_badsecinfo dbsi; 1165 struct disk_badsectors *dbs; 1166 size_t available; 1167 uint8_t *laddr; 1168 1169 dbsi = *(struct disk_badsecinfo *)addr; 1170 missing = wd->sc_bscount; 1171 count = 0; 1172 available = dbsi.dbsi_bufsize; 1173 skip = dbsi.dbsi_skip; 1174 laddr = (uint8_t *)dbsi.dbsi_buffer; 1175 1176 /* 1177 * We start this loop with the expectation that all of the 1178 * entries will be missed and decrement this counter each 1179 * time we either skip over one (already copied out) or 1180 * we actually copy it back to user space. The structs 1181 * holding the bad sector information are copied directly 1182 * back to user space whilst the summary is returned via 1183 * the struct passed in via the ioctl. 1184 */ 1185 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1186 if (skip > 0) { 1187 missing--; 1188 skip--; 1189 continue; 1190 } 1191 if (available < sizeof(*dbs)) 1192 break; 1193 available -= sizeof(*dbs); 1194 copyout(dbs, laddr, sizeof(*dbs)); 1195 laddr += sizeof(*dbs); 1196 missing--; 1197 count++; 1198 } 1199 dbsi.dbsi_left = missing; 1200 dbsi.dbsi_copied = count; 1201 *(struct disk_badsecinfo *)addr = dbsi; 1202 return 0; 1203 } 1204 1205 case DIOCBSFLUSH : 1206 /* Clean out the bad sector list */ 1207 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1208 void *head = SLIST_FIRST(&wd->sc_bslist); 1209 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1210 free(head, M_TEMP); 1211 } 1212 wd->sc_bscount = 0; 1213 return 0; 1214 #endif 1215 case DIOCGDINFO: 1216 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1217 return 0; 1218 #ifdef __HAVE_OLD_DISKLABEL 1219 case ODIOCGDINFO: 1220 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1221 if (newlabel == NULL) 1222 return EIO; 1223 *newlabel = *(wd->sc_dk.dk_label); 1224 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1225 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1226 else 1227 error = ENOTTY; 1228 free(newlabel, M_TEMP); 1229 return error; 1230 #endif 1231 1232 case DIOCGPART: 1233 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1234 ((struct partinfo *)addr)->part = 1235 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1236 return 0; 1237 1238 case DIOCWDINFO: 1239 case DIOCSDINFO: 1240 #ifdef __HAVE_OLD_DISKLABEL 1241 case ODIOCWDINFO: 1242 case ODIOCSDINFO: 1243 #endif 1244 { 1245 struct disklabel *lp; 1246 1247 if ((flag & FWRITE) == 0) 1248 return EBADF; 1249 1250 #ifdef __HAVE_OLD_DISKLABEL 1251 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1252 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1253 if (newlabel == NULL) 1254 return EIO; 1255 memset(newlabel, 0, sizeof newlabel); 1256 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1257 lp = newlabel; 1258 } else 1259 #endif 1260 lp = (struct disklabel *)addr; 1261 1262 mutex_enter(&wd->sc_dk.dk_openlock); 1263 wd->sc_flags |= WDF_LABELLING; 1264 1265 error = setdisklabel(wd->sc_dk.dk_label, 1266 lp, /*wd->sc_dk.dk_openmask : */0, 1267 wd->sc_dk.dk_cpulabel); 1268 if (error == 0) { 1269 if (wd->drvp->state > RESET) { 1270 s = splbio(); 1271 wd->drvp->drive_flags |= DRIVE_RESET; 1272 splx(s); 1273 } 1274 if (xfer == DIOCWDINFO 1275 #ifdef __HAVE_OLD_DISKLABEL 1276 || xfer == ODIOCWDINFO 1277 #endif 1278 ) 1279 error = writedisklabel(WDLABELDEV(dev), 1280 wdstrategy, wd->sc_dk.dk_label, 1281 wd->sc_dk.dk_cpulabel); 1282 } 1283 1284 wd->sc_flags &= ~WDF_LABELLING; 1285 mutex_exit(&wd->sc_dk.dk_openlock); 1286 #ifdef __HAVE_OLD_DISKLABEL 1287 if (newlabel != NULL) 1288 free(newlabel, M_TEMP); 1289 #endif 1290 return error; 1291 } 1292 1293 case DIOCKLABEL: 1294 if (*(int *)addr) 1295 wd->sc_flags |= WDF_KLABEL; 1296 else 1297 wd->sc_flags &= ~WDF_KLABEL; 1298 return 0; 1299 1300 case DIOCWLABEL: 1301 if ((flag & FWRITE) == 0) 1302 return EBADF; 1303 if (*(int *)addr) 1304 wd->sc_flags |= WDF_WLABEL; 1305 else 1306 wd->sc_flags &= ~WDF_WLABEL; 1307 return 0; 1308 1309 case DIOCGDEFLABEL: 1310 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1311 return 0; 1312 #ifdef __HAVE_OLD_DISKLABEL 1313 case ODIOCGDEFLABEL: 1314 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1315 if (newlabel == NULL) 1316 return EIO; 1317 wdgetdefaultlabel(wd, newlabel); 1318 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1319 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1320 else 1321 error = ENOTTY; 1322 free(newlabel, M_TEMP); 1323 return error; 1324 #endif 1325 1326 #ifdef notyet 1327 case DIOCWFORMAT: 1328 if ((flag & FWRITE) == 0) 1329 return EBADF; 1330 { 1331 register struct format_op *fop; 1332 struct iovec aiov; 1333 struct uio auio; 1334 1335 fop = (struct format_op *)addr; 1336 aiov.iov_base = fop->df_buf; 1337 aiov.iov_len = fop->df_count; 1338 auio.uio_iov = &aiov; 1339 auio.uio_iovcnt = 1; 1340 auio.uio_resid = fop->df_count; 1341 auio.uio_offset = 1342 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1343 auio.uio_vmspace = l->l_proc->p_vmspace; 1344 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1345 &auio); 1346 fop->df_count -= auio.uio_resid; 1347 fop->df_reg[0] = wdc->sc_status; 1348 fop->df_reg[1] = wdc->sc_error; 1349 return error; 1350 } 1351 #endif 1352 case DIOCGCACHE: 1353 return wd_getcache(wd, (int *)addr); 1354 1355 case DIOCSCACHE: 1356 return wd_setcache(wd, *(int *)addr); 1357 1358 case DIOCCACHESYNC: 1359 return wd_flushcache(wd, AT_WAIT); 1360 1361 case ATAIOCCOMMAND: 1362 /* 1363 * Make sure this command is (relatively) safe first 1364 */ 1365 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1366 (flag & FWRITE) == 0) 1367 return (EBADF); 1368 { 1369 struct wd_ioctl *wi; 1370 atareq_t *atareq = (atareq_t *) addr; 1371 int error1; 1372 1373 wi = wi_get(); 1374 wi->wi_softc = wd; 1375 wi->wi_atareq = *atareq; 1376 1377 if (atareq->datalen && atareq->flags & 1378 (ATACMD_READ | ATACMD_WRITE)) { 1379 void *tbuf; 1380 if (atareq->datalen < DEV_BSIZE 1381 && atareq->command == WDCC_IDENTIFY) { 1382 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1383 wi->wi_iov.iov_base = tbuf; 1384 wi->wi_iov.iov_len = DEV_BSIZE; 1385 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1386 } else { 1387 tbuf = NULL; 1388 wi->wi_iov.iov_base = atareq->databuf; 1389 wi->wi_iov.iov_len = atareq->datalen; 1390 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1391 } 1392 wi->wi_uio.uio_iov = &wi->wi_iov; 1393 wi->wi_uio.uio_iovcnt = 1; 1394 wi->wi_uio.uio_resid = atareq->datalen; 1395 wi->wi_uio.uio_offset = 0; 1396 wi->wi_uio.uio_rw = 1397 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1398 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1399 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1400 minphys, &wi->wi_uio); 1401 if (tbuf != NULL && error1 == 0) { 1402 error1 = copyout(tbuf, atareq->databuf, 1403 atareq->datalen); 1404 free(tbuf, M_TEMP); 1405 } 1406 } else { 1407 /* No need to call physio if we don't have any 1408 user data */ 1409 wi->wi_bp.b_flags = 0; 1410 wi->wi_bp.b_data = 0; 1411 wi->wi_bp.b_bcount = 0; 1412 wi->wi_bp.b_dev = 0; 1413 wi->wi_bp.b_proc = l->l_proc; 1414 wdioctlstrategy(&wi->wi_bp); 1415 error1 = wi->wi_bp.b_error; 1416 } 1417 *atareq = wi->wi_atareq; 1418 wi_free(wi); 1419 return(error1); 1420 } 1421 1422 case DIOCAWEDGE: 1423 { 1424 struct dkwedge_info *dkw = (void *) addr; 1425 1426 if ((flag & FWRITE) == 0) 1427 return (EBADF); 1428 1429 /* If the ioctl happens here, the parent is us. */ 1430 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1431 return (dkwedge_add(dkw)); 1432 } 1433 1434 case DIOCDWEDGE: 1435 { 1436 struct dkwedge_info *dkw = (void *) addr; 1437 1438 if ((flag & FWRITE) == 0) 1439 return (EBADF); 1440 1441 /* If the ioctl happens here, the parent is us. */ 1442 strcpy(dkw->dkw_parent, device_xname(wd->sc_dev)); 1443 return (dkwedge_del(dkw)); 1444 } 1445 1446 case DIOCLWEDGES: 1447 { 1448 struct dkwedge_list *dkwl = (void *) addr; 1449 1450 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1451 } 1452 1453 case DIOCGSTRATEGY: 1454 { 1455 struct disk_strategy *dks = (void *)addr; 1456 1457 s = splbio(); 1458 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1459 sizeof(dks->dks_name)); 1460 splx(s); 1461 dks->dks_paramlen = 0; 1462 1463 return 0; 1464 } 1465 1466 case DIOCSSTRATEGY: 1467 { 1468 struct disk_strategy *dks = (void *)addr; 1469 struct bufq_state *new; 1470 struct bufq_state *old; 1471 1472 if ((flag & FWRITE) == 0) { 1473 return EBADF; 1474 } 1475 if (dks->dks_param != NULL) { 1476 return EINVAL; 1477 } 1478 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1479 error = bufq_alloc(&new, dks->dks_name, 1480 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1481 if (error) { 1482 return error; 1483 } 1484 s = splbio(); 1485 old = wd->sc_q; 1486 bufq_move(new, old); 1487 wd->sc_q = new; 1488 splx(s); 1489 bufq_free(old); 1490 1491 return 0; 1492 } 1493 1494 default: 1495 return ENOTTY; 1496 } 1497 1498 #ifdef DIAGNOSTIC 1499 panic("wdioctl: impossible"); 1500 #endif 1501 } 1502 1503 #ifdef B_FORMAT 1504 int 1505 wdformat(struct buf *bp) 1506 { 1507 1508 bp->b_flags |= B_FORMAT; 1509 return wdstrategy(bp); 1510 } 1511 #endif 1512 1513 int 1514 wdsize(dev_t dev) 1515 { 1516 struct wd_softc *wd; 1517 int part, omask; 1518 int size; 1519 1520 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1521 1522 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1523 if (wd == NULL) 1524 return (-1); 1525 1526 part = WDPART(dev); 1527 omask = wd->sc_dk.dk_openmask & (1 << part); 1528 1529 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1530 return (-1); 1531 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1532 size = -1; 1533 else 1534 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1535 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1536 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1537 return (-1); 1538 return (size); 1539 } 1540 1541 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1542 static int wddoingadump = 0; 1543 static int wddumprecalibrated = 0; 1544 1545 /* 1546 * Dump core after a system crash. 1547 */ 1548 int 1549 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1550 { 1551 struct wd_softc *wd; /* disk unit to do the I/O */ 1552 struct disklabel *lp; /* disk's disklabel */ 1553 int part, err; 1554 int nblks; /* total number of sectors left to write */ 1555 1556 /* Check if recursive dump; if so, punt. */ 1557 if (wddoingadump) 1558 return EFAULT; 1559 wddoingadump = 1; 1560 1561 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1562 if (wd == NULL) 1563 return (ENXIO); 1564 1565 part = WDPART(dev); 1566 1567 /* Convert to disk sectors. Request must be a multiple of size. */ 1568 lp = wd->sc_dk.dk_label; 1569 if ((size % lp->d_secsize) != 0) 1570 return EFAULT; 1571 nblks = size / lp->d_secsize; 1572 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1573 1574 /* Check transfer bounds against partition size. */ 1575 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1576 return EINVAL; 1577 1578 /* Offset block number to start of partition. */ 1579 blkno += lp->d_partitions[part].p_offset; 1580 1581 /* Recalibrate, if first dump transfer. */ 1582 if (wddumprecalibrated == 0) { 1583 wddumprecalibrated = 1; 1584 (*wd->atabus->ata_reset_drive)(wd->drvp, 1585 AT_POLL | AT_RST_EMERG); 1586 wd->drvp->state = RESET; 1587 } 1588 1589 wd->sc_bp = NULL; 1590 wd->sc_wdc_bio.blkno = blkno; 1591 wd->sc_wdc_bio.flags = ATA_POLL; 1592 if (wd->sc_flags & WDF_LBA48 && 1593 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1594 wd->sc_wdc_bio.flags |= ATA_LBA48; 1595 if (wd->sc_flags & WDF_LBA) 1596 wd->sc_wdc_bio.flags |= ATA_LBA; 1597 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1598 wd->sc_wdc_bio.databuf = va; 1599 #ifndef WD_DUMP_NOT_TRUSTED 1600 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1601 case ATACMD_TRY_AGAIN: 1602 panic("wddump: try again"); 1603 break; 1604 case ATACMD_QUEUED: 1605 panic("wddump: polled command has been queued"); 1606 break; 1607 case ATACMD_COMPLETE: 1608 break; 1609 } 1610 switch(wd->sc_wdc_bio.error) { 1611 case TIMEOUT: 1612 printf("wddump: device timed out"); 1613 err = EIO; 1614 break; 1615 case ERR_DF: 1616 printf("wddump: drive fault"); 1617 err = EIO; 1618 break; 1619 case ERR_DMA: 1620 printf("wddump: DMA error"); 1621 err = EIO; 1622 break; 1623 case ERROR: 1624 printf("wddump: "); 1625 wdperror(wd); 1626 err = EIO; 1627 break; 1628 case NOERROR: 1629 err = 0; 1630 break; 1631 default: 1632 panic("wddump: unknown error type"); 1633 } 1634 if (err != 0) { 1635 printf("\n"); 1636 return err; 1637 } 1638 #else /* WD_DUMP_NOT_TRUSTED */ 1639 /* Let's just talk about this first... */ 1640 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1641 unit, va, cylin, head, sector); 1642 delay(500 * 1000); /* half a second */ 1643 #endif 1644 1645 wddoingadump = 0; 1646 return 0; 1647 } 1648 1649 #ifdef HAS_BAD144_HANDLING 1650 /* 1651 * Internalize the bad sector table. 1652 */ 1653 void 1654 bad144intern(struct wd_softc *wd) 1655 { 1656 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1657 struct disklabel *lp = wd->sc_dk.dk_label; 1658 int i = 0; 1659 1660 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1661 1662 for (; i < NBT_BAD; i++) { 1663 if (bt->bt_bad[i].bt_cyl == 0xffff) 1664 break; 1665 wd->sc_badsect[i] = 1666 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1667 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1668 (bt->bt_bad[i].bt_trksec & 0xff); 1669 } 1670 for (; i < NBT_BAD+1; i++) 1671 wd->sc_badsect[i] = -1; 1672 } 1673 #endif 1674 1675 static void 1676 wd_params_to_properties(struct wd_softc *wd, struct ataparams *params) 1677 { 1678 prop_dictionary_t disk_info, odisk_info, geom; 1679 const char *cp; 1680 1681 disk_info = prop_dictionary_create(); 1682 1683 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1684 cp = "ST506"; 1685 else { 1686 /* XXX Should have a case for ATA here, too. */ 1687 cp = "ESDI"; 1688 } 1689 prop_dictionary_set_cstring_nocopy(disk_info, "type", cp); 1690 1691 geom = prop_dictionary_create(); 1692 1693 prop_dictionary_set_uint64(geom, "sectors-per-unit", wd->sc_capacity); 1694 1695 prop_dictionary_set_uint32(geom, "sector-size", 1696 DEV_BSIZE /* XXX 512? */); 1697 1698 prop_dictionary_set_uint16(geom, "sectors-per-track", 1699 wd->sc_params.atap_sectors); 1700 1701 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1702 wd->sc_params.atap_heads); 1703 1704 if (wd->sc_flags & WDF_LBA) 1705 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1706 wd->sc_capacity / 1707 (wd->sc_params.atap_heads * 1708 wd->sc_params.atap_sectors)); 1709 else 1710 prop_dictionary_set_uint16(geom, "cylinders-per-unit", 1711 wd->sc_params.atap_cylinders); 1712 1713 prop_dictionary_set(disk_info, "geometry", geom); 1714 prop_object_release(geom); 1715 1716 prop_dictionary_set(device_properties(wd->sc_dev), 1717 "disk-info", disk_info); 1718 1719 /* 1720 * Don't release disk_info here; we keep a reference to it. 1721 * disk_detach() will release it when we go away. 1722 */ 1723 1724 odisk_info = wd->sc_dk.dk_info; 1725 wd->sc_dk.dk_info = disk_info; 1726 if (odisk_info) 1727 prop_object_release(odisk_info); 1728 } 1729 1730 int 1731 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1732 { 1733 1734 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1735 case CMD_AGAIN: 1736 return 1; 1737 case CMD_ERR: 1738 /* 1739 * We `know' there's a drive here; just assume it's old. 1740 * This geometry is only used to read the MBR and print a 1741 * (false) attach message. 1742 */ 1743 strncpy(params->atap_model, "ST506", 1744 sizeof params->atap_model); 1745 params->atap_config = ATA_CFG_FIXED; 1746 params->atap_cylinders = 1024; 1747 params->atap_heads = 8; 1748 params->atap_sectors = 17; 1749 params->atap_multi = 1; 1750 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1751 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1752 /* FALLTHROUGH */ 1753 case CMD_OK: 1754 wd_params_to_properties(wd, params); 1755 return 0; 1756 default: 1757 panic("wd_get_params: bad return code from ata_get_params"); 1758 /* NOTREACHED */ 1759 } 1760 } 1761 1762 int 1763 wd_getcache(struct wd_softc *wd, int *bitsp) 1764 { 1765 struct ataparams params; 1766 1767 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1768 return EIO; 1769 if (params.atap_cmd_set1 == 0x0000 || 1770 params.atap_cmd_set1 == 0xffff || 1771 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1772 *bitsp = 0; 1773 return 0; 1774 } 1775 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1776 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1777 *bitsp |= DKCACHE_WRITE; 1778 1779 return 0; 1780 } 1781 1782 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1783 1784 int 1785 wd_setcache(struct wd_softc *wd, int bits) 1786 { 1787 struct ataparams params; 1788 struct ata_command ata_c; 1789 1790 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1791 return EIO; 1792 1793 if (params.atap_cmd_set1 == 0x0000 || 1794 params.atap_cmd_set1 == 0xffff || 1795 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1796 return EOPNOTSUPP; 1797 1798 if ((bits & DKCACHE_READ) == 0 || 1799 (bits & DKCACHE_SAVE) != 0) 1800 return EOPNOTSUPP; 1801 1802 memset(&ata_c, 0, sizeof(struct ata_command)); 1803 ata_c.r_command = SET_FEATURES; 1804 ata_c.r_st_bmask = 0; 1805 ata_c.r_st_pmask = 0; 1806 ata_c.timeout = 30000; /* 30s timeout */ 1807 ata_c.flags = AT_WAIT; 1808 if (bits & DKCACHE_WRITE) 1809 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1810 else 1811 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1812 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1813 aprint_error_dev(wd->sc_dev, 1814 "wd_setcache command not complete\n"); 1815 return EIO; 1816 } 1817 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1818 char sbuf[sizeof(at_errbits) + 64]; 1819 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1820 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1821 return EIO; 1822 } 1823 return 0; 1824 } 1825 1826 static int 1827 wd_standby(struct wd_softc *wd, int flags) 1828 { 1829 struct ata_command ata_c; 1830 1831 memset(&ata_c, 0, sizeof(struct ata_command)); 1832 ata_c.r_command = WDCC_STANDBY_IMMED; 1833 ata_c.r_st_bmask = WDCS_DRDY; 1834 ata_c.r_st_pmask = WDCS_DRDY; 1835 ata_c.flags = flags; 1836 ata_c.timeout = 30000; /* 30s timeout */ 1837 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1838 aprint_error_dev(wd->sc_dev, 1839 "standby immediate command didn't complete\n"); 1840 return EIO; 1841 } 1842 if (ata_c.flags & AT_ERROR) { 1843 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1844 return ENODEV; 1845 } 1846 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1847 char sbuf[sizeof(at_errbits) + 64]; 1848 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1849 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1850 return EIO; 1851 } 1852 return 0; 1853 } 1854 1855 int 1856 wd_flushcache(struct wd_softc *wd, int flags) 1857 { 1858 struct ata_command ata_c; 1859 1860 /* 1861 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1862 * only ATA-2 and still support it. 1863 */ 1864 if (wd->drvp->ata_vers < 4 && 1865 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1866 wd->sc_params.atap_cmd_set2 == 0xffff)) 1867 return ENODEV; 1868 memset(&ata_c, 0, sizeof(struct ata_command)); 1869 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1870 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1871 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1872 else 1873 ata_c.r_command = WDCC_FLUSHCACHE; 1874 ata_c.r_st_bmask = WDCS_DRDY; 1875 ata_c.r_st_pmask = WDCS_DRDY; 1876 ata_c.flags = flags; 1877 ata_c.timeout = 30000; /* 30s timeout */ 1878 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1879 aprint_error_dev(wd->sc_dev, 1880 "flush cache command didn't complete\n"); 1881 return EIO; 1882 } 1883 if (ata_c.flags & AT_ERROR) { 1884 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1885 return ENODEV; 1886 } 1887 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1888 char sbuf[sizeof(at_errbits) + 64]; 1889 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1890 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1891 sbuf); 1892 return EIO; 1893 } 1894 return 0; 1895 } 1896 1897 bool 1898 wd_shutdown(device_t dev, int how) 1899 { 1900 struct wd_softc *wd = device_private(dev); 1901 1902 /* the adapter needs to be enabled */ 1903 if (wd->atabus->ata_addref(wd->drvp)) 1904 return true; /* no need to complain */ 1905 1906 wd_flushcache(wd, AT_POLL); 1907 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1908 wd_standby(wd, AT_POLL); 1909 return true; 1910 } 1911 1912 /* 1913 * Allocate space for a ioctl queue structure. Mostly taken from 1914 * scsipi_ioctl.c 1915 */ 1916 struct wd_ioctl * 1917 wi_get(void) 1918 { 1919 struct wd_ioctl *wi; 1920 int s; 1921 1922 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1923 buf_init(&wi->wi_bp); 1924 s = splbio(); 1925 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1926 splx(s); 1927 return (wi); 1928 } 1929 1930 /* 1931 * Free an ioctl structure and remove it from our list 1932 */ 1933 1934 void 1935 wi_free(struct wd_ioctl *wi) 1936 { 1937 int s; 1938 1939 s = splbio(); 1940 LIST_REMOVE(wi, wi_list); 1941 splx(s); 1942 buf_destroy(&wi->wi_bp); 1943 free(wi, M_TEMP); 1944 } 1945 1946 /* 1947 * Find a wd_ioctl structure based on the struct buf. 1948 */ 1949 1950 struct wd_ioctl * 1951 wi_find(struct buf *bp) 1952 { 1953 struct wd_ioctl *wi; 1954 int s; 1955 1956 s = splbio(); 1957 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1958 if (bp == &wi->wi_bp) 1959 break; 1960 splx(s); 1961 return (wi); 1962 } 1963 1964 /* 1965 * Ioctl pseudo strategy routine 1966 * 1967 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1968 * happens here is: 1969 * 1970 * - wdioctl() queues a wd_ioctl structure. 1971 * 1972 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1973 * user space I/O is required. If physio() is called, physio() eventually 1974 * calls wdioctlstrategy(). 1975 * 1976 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1977 * to perform the actual command 1978 * 1979 * The reason for the use of the pseudo strategy routine is because 1980 * when doing I/O to/from user space, physio _really_ wants to be in 1981 * the loop. We could put the entire buffer into the ioctl request 1982 * structure, but that won't scale if we want to do things like download 1983 * microcode. 1984 */ 1985 1986 void 1987 wdioctlstrategy(struct buf *bp) 1988 { 1989 struct wd_ioctl *wi; 1990 struct ata_command ata_c; 1991 int error = 0; 1992 1993 wi = wi_find(bp); 1994 if (wi == NULL) { 1995 printf("wdioctlstrategy: " 1996 "No matching ioctl request found in queue\n"); 1997 error = EINVAL; 1998 goto bad; 1999 } 2000 2001 memset(&ata_c, 0, sizeof(ata_c)); 2002 2003 /* 2004 * Abort if physio broke up the transfer 2005 */ 2006 2007 if (bp->b_bcount != wi->wi_atareq.datalen) { 2008 printf("physio split wd ioctl request... cannot proceed\n"); 2009 error = EIO; 2010 goto bad; 2011 } 2012 2013 /* 2014 * Abort if we didn't get a buffer size that was a multiple of 2015 * our sector size (or was larger than NBBY) 2016 */ 2017 2018 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 2019 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 2020 (1 << NBBY)) { 2021 error = EINVAL; 2022 goto bad; 2023 } 2024 2025 /* 2026 * Make sure a timeout was supplied in the ioctl request 2027 */ 2028 2029 if (wi->wi_atareq.timeout == 0) { 2030 error = EINVAL; 2031 goto bad; 2032 } 2033 2034 if (wi->wi_atareq.flags & ATACMD_READ) 2035 ata_c.flags |= AT_READ; 2036 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2037 ata_c.flags |= AT_WRITE; 2038 2039 if (wi->wi_atareq.flags & ATACMD_READREG) 2040 ata_c.flags |= AT_READREG; 2041 2042 ata_c.flags |= AT_WAIT; 2043 2044 ata_c.timeout = wi->wi_atareq.timeout; 2045 ata_c.r_command = wi->wi_atareq.command; 2046 ata_c.r_head = wi->wi_atareq.head & 0x0f; 2047 ata_c.r_cyl = wi->wi_atareq.cylinder; 2048 ata_c.r_sector = wi->wi_atareq.sec_num; 2049 ata_c.r_count = wi->wi_atareq.sec_count; 2050 ata_c.r_features = wi->wi_atareq.features; 2051 ata_c.r_st_bmask = WDCS_DRDY; 2052 ata_c.r_st_pmask = WDCS_DRDY; 2053 ata_c.data = wi->wi_bp.b_data; 2054 ata_c.bcount = wi->wi_bp.b_bcount; 2055 2056 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2057 != ATACMD_COMPLETE) { 2058 wi->wi_atareq.retsts = ATACMD_ERROR; 2059 goto bad; 2060 } 2061 2062 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2063 if (ata_c.flags & AT_ERROR) { 2064 wi->wi_atareq.retsts = ATACMD_ERROR; 2065 wi->wi_atareq.error = ata_c.r_error; 2066 } else if (ata_c.flags & AT_DF) 2067 wi->wi_atareq.retsts = ATACMD_DF; 2068 else 2069 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2070 } else { 2071 wi->wi_atareq.retsts = ATACMD_OK; 2072 if (wi->wi_atareq.flags & ATACMD_READREG) { 2073 wi->wi_atareq.head = ata_c.r_head ; 2074 wi->wi_atareq.cylinder = ata_c.r_cyl; 2075 wi->wi_atareq.sec_num = ata_c.r_sector; 2076 wi->wi_atareq.sec_count = ata_c.r_count; 2077 wi->wi_atareq.features = ata_c.r_features; 2078 wi->wi_atareq.error = ata_c.r_error; 2079 } 2080 } 2081 2082 bp->b_error = 0; 2083 biodone(bp); 2084 return; 2085 bad: 2086 bp->b_error = error; 2087 biodone(bp); 2088 } 2089
Indexes created Wed Oct 22 13:09:56 GMT 2025