wd.c revision 1.320.2.3
1 /* $NetBSD: wd.c,v 1.320.2.3 2006/06/26 12:50:37 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.320.2.3 2006/06/26 12:50:37 yamt Exp $"); 70 71 #ifndef ATADEBUG 72 #define ATADEBUG 73 #endif /* ATADEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/bufq.h> 86 #include <sys/uio.h> 87 #include <sys/malloc.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/disk.h> 91 #include <sys/syslog.h> 92 #include <sys/proc.h> 93 #include <sys/vnode.h> 94 #if NRND > 0 95 #include <sys/rnd.h> 96 #endif 97 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #include <dev/ata/atareg.h> 102 #include <dev/ata/atavar.h> 103 #include <dev/ata/wdvar.h> 104 #include <dev/ic/wdcreg.h> 105 #include <sys/ataio.h> 106 #include "locators.h" 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 CFATTACH_DECL(wd, sizeof(struct wd_softc), 143 wdprobe, wdattach, wddetach, wdactivate); 144 145 extern struct cfdriver wd_cd; 146 147 dev_type_open(wdopen); 148 dev_type_close(wdclose); 149 dev_type_read(wdread); 150 dev_type_write(wdwrite); 151 dev_type_ioctl(wdioctl); 152 dev_type_strategy(wdstrategy); 153 dev_type_dump(wddump); 154 dev_type_size(wdsize); 155 156 const struct bdevsw wd_bdevsw = { 157 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 158 }; 159 160 const struct cdevsw wd_cdevsw = { 161 wdopen, wdclose, wdread, wdwrite, wdioctl, 162 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 163 }; 164 165 /* 166 * Glue necessary to hook WDCIOCCOMMAND into physio 167 */ 168 169 struct wd_ioctl { 170 LIST_ENTRY(wd_ioctl) wi_list; 171 struct buf wi_bp; 172 struct uio wi_uio; 173 struct iovec wi_iov; 174 atareq_t wi_atareq; 175 struct wd_softc *wi_softc; 176 }; 177 178 LIST_HEAD(, wd_ioctl) wi_head; 179 180 struct wd_ioctl *wi_find(struct buf *); 181 void wi_free(struct wd_ioctl *); 182 struct wd_ioctl *wi_get(void); 183 void wdioctlstrategy(struct buf *); 184 185 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 186 void wdgetdisklabel(struct wd_softc *); 187 void wdstart(void *); 188 void __wdstart(struct wd_softc*, struct buf *); 189 void wdrestart(void *); 190 void wddone(void *); 191 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 192 int wd_standby(struct wd_softc *, int); 193 int wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy, minphys }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 207 208 /* 209 * Quirk table for IDE drives. Put more-specific matches first, since 210 * a simple globbing routine is used for matching. 211 */ 212 static const struct wd_quirk { 213 const char *wdq_match; /* inquiry pattern to match */ 214 int wdq_quirks; /* drive quirks */ 215 } wd_quirk_table[] = { 216 /* 217 * Some Seagate S-ATA drives have a PHY which can get confused 218 * with the way data is packetized by some S-ATA controllers. 219 * 220 * The work-around is to split in two any write transfer whose 221 * sector count % 15 == 1 (assuming 512 byte sectors). 222 * 223 * XXX This is an incomplete list. There are at least a couple 224 * XXX more model numbers. If you have trouble with such transfers 225 * XXX (8K is the most common) on Seagate S-ATA drives, please 226 * XXX notify thorpej (at) NetBSD.org. 227 */ 228 { "ST3120023AS", 229 WD_QUIRK_SPLIT_MOD15_WRITE }, 230 { "ST380023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 233 /* 234 * These seagate drives seems to have issue addressing sector 0xfffffff 235 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 236 * LBA48 237 * Note that we can't just change the code to always use LBA48 for 238 * sector 0xfffffff, because this would break valid and working 239 * setups using LBA48 drives on non-LBA48-capable controllers 240 * (and it's hard to get a list of such controllers) 241 */ 242 { "ST3160021A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160812A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3160023A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3160827A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 /* Attempt to catch all seagate drives larger than 200GB */ 251 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 252 WD_QUIRK_FORCE_LBA48 }, 253 { NULL, 254 0 } 255 }; 256 257 static const struct wd_quirk * 258 wd_lookup_quirks(const char *name) 259 { 260 const struct wd_quirk *wdq; 261 const char *estr; 262 263 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 264 /* 265 * We only want exact matches (which include matches 266 * against globbing characters). 267 */ 268 if (pmatch(name, wdq->wdq_match, &estr) == 2) 269 return (wdq); 270 } 271 return (NULL); 272 } 273 274 int 275 wdprobe(struct device *parent, struct cfdata *match, void *aux) 276 { 277 struct ata_device *adev = aux; 278 279 if (adev == NULL) 280 return 0; 281 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 282 return 0; 283 284 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 285 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 286 return 0; 287 return 1; 288 } 289 290 void 291 wdattach(struct device *parent, struct device *self, void *aux) 292 { 293 struct wd_softc *wd = (void *)self; 294 struct ata_device *adev= aux; 295 int i, blank; 296 char tbuf[41], pbuf[9], c, *p, *q; 297 const struct wd_quirk *wdq; 298 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 299 300 callout_init(&wd->sc_restart_ch); 301 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 302 #ifdef WD_SOFTBADSECT 303 SLIST_INIT(&wd->sc_bslist); 304 #endif 305 wd->atabus = adev->adev_bustype; 306 wd->openings = adev->adev_openings; 307 wd->drvp = adev->adev_drv_data; 308 309 wd->drvp->drv_done = wddone; 310 wd->drvp->drv_softc = &wd->sc_dev; 311 312 aprint_naive("\n"); 313 314 /* read our drive info */ 315 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 316 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 317 return; 318 } 319 320 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 321 i < sizeof(wd->sc_params.atap_model); i++) { 322 c = *p++; 323 if (c == '\0') 324 break; 325 if (c != ' ') { 326 if (blank) { 327 *q++ = ' '; 328 blank = 0; 329 } 330 *q++ = c; 331 } else 332 blank = 1; 333 } 334 *q++ = '\0'; 335 336 aprint_normal(": <%s>\n", tbuf); 337 338 wdq = wd_lookup_quirks(tbuf); 339 if (wdq != NULL) 340 wd->sc_quirks = wdq->wdq_quirks; 341 342 if ((wd->sc_params.atap_multi & 0xff) > 1) { 343 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 344 } else { 345 wd->sc_multi = 1; 346 } 347 348 aprint_normal("%s: drive supports %d-sector PIO transfers,", 349 wd->sc_dev.dv_xname, wd->sc_multi); 350 351 /* 48-bit LBA addressing */ 352 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 353 wd->sc_flags |= WDF_LBA48; 354 355 /* Prior to ATA-4, LBA was optional. */ 356 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 357 wd->sc_flags |= WDF_LBA; 358 #if 0 359 /* ATA-4 requires LBA. */ 360 if (wd->sc_params.atap_ataversion != 0xffff && 361 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 362 wd->sc_flags |= WDF_LBA; 363 #endif 364 365 if ((wd->sc_flags & WDF_LBA48) != 0) { 366 aprint_normal(" LBA48 addressing\n"); 367 wd->sc_capacity = 368 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 369 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 370 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 371 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 372 } else if ((wd->sc_flags & WDF_LBA) != 0) { 373 aprint_normal(" LBA addressing\n"); 374 wd->sc_capacity = 375 ((u_int64_t)wd->sc_params.atap_capacity[1] << 16) | 376 wd->sc_params.atap_capacity[0]; 377 } else { 378 aprint_normal(" chs addressing\n"); 379 wd->sc_capacity = 380 wd->sc_params.atap_cylinders * 381 wd->sc_params.atap_heads * 382 wd->sc_params.atap_sectors; 383 } 384 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 385 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 386 "%d bytes/sect x %llu sectors\n", 387 self->dv_xname, pbuf, 388 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 389 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 390 wd->sc_params.atap_cylinders, 391 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 392 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 393 394 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 395 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 396 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 397 /* 398 * Initialize and attach the disk structure. 399 */ 400 wd->sc_dk.dk_driver = &wddkdriver; 401 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 402 disk_attach(&wd->sc_dk); 403 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 404 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 405 if (wd->sc_sdhook == NULL) 406 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 407 wd->sc_dev.dv_xname); 408 #if NRND > 0 409 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 410 RND_TYPE_DISK, 0); 411 #endif 412 413 /* Discover wedges on this disk. */ 414 dkwedge_discover(&wd->sc_dk); 415 } 416 417 int 418 wdactivate(struct device *self, enum devact act) 419 { 420 int rv = 0; 421 422 switch (act) { 423 case DVACT_ACTIVATE: 424 rv = EOPNOTSUPP; 425 break; 426 427 case DVACT_DEACTIVATE: 428 /* 429 * Nothing to do; we key off the device's DVF_ACTIVATE. 430 */ 431 break; 432 } 433 return (rv); 434 } 435 436 int 437 wddetach(struct device *self, int flags) 438 { 439 struct wd_softc *sc = (struct wd_softc *)self; 440 int s, bmaj, cmaj, i, mn; 441 442 /* locate the major number */ 443 bmaj = bdevsw_lookup_major(&wd_bdevsw); 444 cmaj = cdevsw_lookup_major(&wd_cdevsw); 445 446 /* Nuke the vnodes for any open instances. */ 447 for (i = 0; i < MAXPARTITIONS; i++) { 448 mn = WDMINOR(device_unit(self), i); 449 vdevgone(bmaj, mn, mn, VBLK); 450 vdevgone(cmaj, mn, mn, VCHR); 451 } 452 453 /* Delete all of our wedges. */ 454 dkwedge_delall(&sc->sc_dk); 455 456 s = splbio(); 457 458 /* Kill off any queued buffers. */ 459 bufq_drain(sc->sc_q); 460 461 bufq_free(sc->sc_q); 462 sc->atabus->ata_killpending(sc->drvp); 463 464 splx(s); 465 466 /* Detach disk. */ 467 disk_detach(&sc->sc_dk); 468 469 #ifdef WD_SOFTBADSECT 470 /* Clean out the bad sector list */ 471 while (!SLIST_EMPTY(&sc->sc_bslist)) { 472 void *head = SLIST_FIRST(&sc->sc_bslist); 473 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 474 free(head, M_TEMP); 475 } 476 sc->sc_bscount = 0; 477 #endif 478 479 /* Get rid of the shutdown hook. */ 480 if (sc->sc_sdhook != NULL) 481 shutdownhook_disestablish(sc->sc_sdhook); 482 483 #if NRND > 0 484 /* Unhook the entropy source. */ 485 rnd_detach_source(&sc->rnd_source); 486 #endif 487 488 sc->drvp->drive_flags = 0; /* no drive any more here */ 489 490 return (0); 491 } 492 493 /* 494 * Read/write routine for a buffer. Validates the arguments and schedules the 495 * transfer. Does not wait for the transfer to complete. 496 */ 497 void 498 wdstrategy(struct buf *bp) 499 { 500 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 501 struct disklabel *lp = wd->sc_dk.dk_label; 502 daddr_t blkno; 503 int s; 504 505 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 506 DEBUG_XFERS); 507 508 /* Valid request? */ 509 if (bp->b_blkno < 0 || 510 (bp->b_bcount % lp->d_secsize) != 0 || 511 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 512 bp->b_error = EINVAL; 513 goto bad; 514 } 515 516 /* If device invalidated (e.g. media change, door open), error. */ 517 if ((wd->sc_flags & WDF_LOADED) == 0) { 518 bp->b_error = EIO; 519 goto bad; 520 } 521 522 /* If it's a null transfer, return immediately. */ 523 if (bp->b_bcount == 0) 524 goto done; 525 526 /* 527 * Do bounds checking, adjust transfer. if error, process. 528 * If end of partition, just return. 529 */ 530 if (WDPART(bp->b_dev) == RAW_PART) { 531 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 532 wd->sc_capacity) <= 0) 533 goto done; 534 } else { 535 if (bounds_check_with_label(&wd->sc_dk, bp, 536 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 537 goto done; 538 } 539 540 /* 541 * Now convert the block number to absolute and put it in 542 * terms of the device's logical block size. 543 */ 544 if (lp->d_secsize >= DEV_BSIZE) 545 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 546 else 547 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 548 549 if (WDPART(bp->b_dev) != RAW_PART) 550 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 551 552 bp->b_rawblkno = blkno; 553 554 #ifdef WD_SOFTBADSECT 555 /* 556 * If the transfer about to be attempted contains only a block that 557 * is known to be bad then return an error for the transfer without 558 * even attempting to start a transfer up under the premis that we 559 * will just end up doing more retries for a transfer that will end 560 * up failing again. 561 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 562 */ 563 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 564 struct disk_badsectors *dbs; 565 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 566 567 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 568 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 569 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 570 bp->b_error = EIO; 571 goto bad; 572 } 573 } 574 #endif 575 576 /* Queue transfer on drive, activate drive and controller if idle. */ 577 s = splbio(); 578 BUFQ_PUT(wd->sc_q, bp); 579 wdstart(wd); 580 splx(s); 581 return; 582 bad: 583 bp->b_flags |= B_ERROR; 584 done: 585 /* Toss transfer; we're done early. */ 586 bp->b_resid = bp->b_bcount; 587 biodone(bp); 588 } 589 590 /* 591 * Queue a drive for I/O. 592 */ 593 void 594 wdstart(void *arg) 595 { 596 struct wd_softc *wd = arg; 597 struct buf *bp = NULL; 598 599 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 600 DEBUG_XFERS); 601 while (wd->openings > 0) { 602 603 /* Is there a buf for us ? */ 604 if ((bp = BUFQ_GET(wd->sc_q)) == NULL) 605 return; 606 607 /* 608 * Make the command. First lock the device 609 */ 610 wd->openings--; 611 612 wd->retries = 0; 613 __wdstart(wd, bp); 614 } 615 } 616 617 static void 618 wd_split_mod15_write(struct buf *bp) 619 { 620 struct buf *obp = bp->b_private; 621 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 622 623 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 624 /* 625 * Propagate the error. If this was the first half of 626 * the original transfer, make sure to account for that 627 * in the residual. 628 */ 629 if (bp->b_data == obp->b_data) 630 bp->b_resid += bp->b_bcount; 631 goto done; 632 } 633 634 /* 635 * If this was the second half of the transfer, we're all done! 636 */ 637 if (bp->b_data != obp->b_data) 638 goto done; 639 640 /* 641 * Advance the pointer to the second half and issue that command 642 * using the same opening. 643 */ 644 bp->b_flags = obp->b_flags | B_CALL; 645 bp->b_data += bp->b_bcount; 646 bp->b_blkno += (bp->b_bcount / 512); 647 bp->b_rawblkno += (bp->b_bcount / 512); 648 __wdstart(sc, bp); 649 return; 650 651 done: 652 obp->b_flags |= bp->b_flags & B_ERROR; 653 obp->b_error = bp->b_error; 654 obp->b_resid = bp->b_resid; 655 putiobuf(bp); 656 biodone(obp); 657 sc->openings++; 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_nowait(); 681 if (__predict_false(nbp == NULL)) { 682 /* No memory -- fail the iop. */ 683 bp->b_error = ENOMEM; 684 bp->b_flags |= B_ERROR; 685 bp->b_resid = bp->b_bcount; 686 biodone(bp); 687 wd->openings++; 688 return; 689 } 690 691 nbp->b_error = 0; 692 nbp->b_proc = bp->b_proc; 693 nbp->b_vp = NULLVP; 694 nbp->b_dev = bp->b_dev; 695 696 nbp->b_bcount = bp->b_bcount / 2; 697 nbp->b_bufsize = bp->b_bcount / 2; 698 nbp->b_data = bp->b_data; 699 700 nbp->b_blkno = bp->b_blkno; 701 nbp->b_rawblkno = bp->b_rawblkno; 702 703 nbp->b_flags = bp->b_flags | B_CALL; 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.blkdone =0; 716 wd->sc_bp = bp; 717 /* 718 * If we're retrying, retry in single-sector mode. This will give us 719 * the sector number of the problem, and will eventually allow the 720 * transfer to succeed. 721 */ 722 if (wd->retries >= WDIORETRIES_SINGLE) 723 wd->sc_wdc_bio.flags = ATA_SINGLE; 724 else 725 wd->sc_wdc_bio.flags = 0; 726 if (wd->sc_flags & WDF_LBA48 && 727 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 728 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 729 wd->sc_wdc_bio.flags |= ATA_LBA48; 730 if (wd->sc_flags & WDF_LBA) 731 wd->sc_wdc_bio.flags |= ATA_LBA; 732 if (bp->b_flags & B_READ) 733 wd->sc_wdc_bio.flags |= ATA_READ; 734 wd->sc_wdc_bio.bcount = bp->b_bcount; 735 wd->sc_wdc_bio.databuf = bp->b_data; 736 /* Instrumentation. */ 737 disk_busy(&wd->sc_dk); 738 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 739 case ATACMD_TRY_AGAIN: 740 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 741 break; 742 case ATACMD_QUEUED: 743 case ATACMD_COMPLETE: 744 break; 745 default: 746 panic("__wdstart: bad return code from ata_bio()"); 747 } 748 } 749 750 void 751 wddone(void *v) 752 { 753 struct wd_softc *wd = v; 754 struct buf *bp = wd->sc_bp; 755 const char *errmsg; 756 int do_perror = 0; 757 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 758 DEBUG_XFERS); 759 760 if (bp == NULL) 761 return; 762 bp->b_resid = wd->sc_wdc_bio.bcount; 763 switch (wd->sc_wdc_bio.error) { 764 case ERR_DMA: 765 errmsg = "DMA error"; 766 goto retry; 767 case ERR_DF: 768 errmsg = "device fault"; 769 goto retry; 770 case TIMEOUT: 771 errmsg = "device timeout"; 772 goto retry; 773 case ERR_RESET: 774 errmsg = "channel reset"; 775 goto retry2; 776 case ERROR: 777 /* Don't care about media change bits */ 778 if (wd->sc_wdc_bio.r_error != 0 && 779 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 780 goto noerror; 781 errmsg = "error"; 782 do_perror = 1; 783 retry: /* Just reset and retry. Can we do more ? */ 784 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 785 retry2: 786 diskerr(bp, "wd", errmsg, LOG_PRINTF, 787 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 788 if (wd->retries < WDIORETRIES) 789 printf(", retrying\n"); 790 if (do_perror) 791 wdperror(wd); 792 if (wd->retries < WDIORETRIES) { 793 wd->retries++; 794 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 795 wdrestart, wd); 796 return; 797 } 798 printf("\n"); 799 800 #ifdef WD_SOFTBADSECT 801 /* 802 * Not all errors indicate a failed block but those that do, 803 * put the block on the bad-block list for the device. Only 804 * do this for reads because the drive should do it for writes, 805 * itself, according to Manuel. 806 */ 807 if ((bp->b_flags & B_READ) && 808 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 809 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 810 struct disk_badsectors *dbs; 811 812 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 813 dbs->dbs_min = bp->b_rawblkno; 814 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 815 microtime(&dbs->dbs_failedat); 816 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 817 wd->sc_bscount++; 818 } 819 #endif 820 bp->b_flags |= B_ERROR; 821 bp->b_error = EIO; 822 break; 823 case NOERROR: 824 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 825 printf("%s: soft error (corrected)\n", 826 wd->sc_dev.dv_xname); 827 break; 828 case ERR_NODEV: 829 bp->b_flags |= B_ERROR; 830 bp->b_error = EIO; 831 break; 832 } 833 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 834 (bp->b_flags & B_READ)); 835 #if NRND > 0 836 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 837 #endif 838 /* XXX Yuck, but we don't want to increment openings in this case */ 839 if (__predict_false((bp->b_flags & B_CALL) != 0 && 840 bp->b_iodone == wd_split_mod15_write)) 841 biodone(bp); 842 else { 843 biodone(bp); 844 wd->openings++; 845 } 846 wdstart(wd); 847 } 848 849 void 850 wdrestart(void *v) 851 { 852 struct wd_softc *wd = v; 853 struct buf *bp = wd->sc_bp; 854 int s; 855 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 856 DEBUG_XFERS); 857 858 s = splbio(); 859 __wdstart(v, bp); 860 splx(s); 861 } 862 863 int 864 wdread(dev_t dev, struct uio *uio, int flags) 865 { 866 867 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 868 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 869 } 870 871 int 872 wdwrite(dev_t dev, struct uio *uio, int flags) 873 { 874 875 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 876 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 877 } 878 879 int 880 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 881 { 882 struct wd_softc *wd; 883 int part, error; 884 885 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 886 wd = device_lookup(&wd_cd, WDUNIT(dev)); 887 if (wd == NULL) 888 return (ENXIO); 889 890 if (! device_is_active(&wd->sc_dev)) 891 return (ENODEV); 892 893 part = WDPART(dev); 894 895 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 896 return (error); 897 898 /* 899 * If there are wedges, and this is not RAW_PART, then we 900 * need to fail. 901 */ 902 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 903 error = EBUSY; 904 goto bad1; 905 } 906 907 /* 908 * If this is the first open of this device, add a reference 909 * to the adapter. 910 */ 911 if (wd->sc_dk.dk_openmask == 0 && 912 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 913 goto bad1; 914 915 if (wd->sc_dk.dk_openmask != 0) { 916 /* 917 * If any partition is open, but the disk has been invalidated, 918 * disallow further opens. 919 */ 920 if ((wd->sc_flags & WDF_LOADED) == 0) { 921 error = EIO; 922 goto bad2; 923 } 924 } else { 925 if ((wd->sc_flags & WDF_LOADED) == 0) { 926 wd->sc_flags |= WDF_LOADED; 927 928 /* Load the physical device parameters. */ 929 wd_get_params(wd, AT_WAIT, &wd->sc_params); 930 931 /* Load the partition info if not already loaded. */ 932 wdgetdisklabel(wd); 933 } 934 } 935 936 /* Check that the partition exists. */ 937 if (part != RAW_PART && 938 (part >= wd->sc_dk.dk_label->d_npartitions || 939 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 940 error = ENXIO; 941 goto bad2; 942 } 943 944 /* Insure only one open at a time. */ 945 switch (fmt) { 946 case S_IFCHR: 947 wd->sc_dk.dk_copenmask |= (1 << part); 948 break; 949 case S_IFBLK: 950 wd->sc_dk.dk_bopenmask |= (1 << part); 951 break; 952 } 953 wd->sc_dk.dk_openmask = 954 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 955 956 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 957 return 0; 958 959 bad2: 960 if (wd->sc_dk.dk_openmask == 0) 961 wd->atabus->ata_delref(wd->drvp); 962 bad1: 963 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 964 return error; 965 } 966 967 int 968 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 969 { 970 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 971 int part = WDPART(dev); 972 int error; 973 974 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 975 976 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 977 return error; 978 979 switch (fmt) { 980 case S_IFCHR: 981 wd->sc_dk.dk_copenmask &= ~(1 << part); 982 break; 983 case S_IFBLK: 984 wd->sc_dk.dk_bopenmask &= ~(1 << part); 985 break; 986 } 987 wd->sc_dk.dk_openmask = 988 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 989 990 if (wd->sc_dk.dk_openmask == 0) { 991 wd_flushcache(wd, AT_WAIT); 992 993 if (! (wd->sc_flags & WDF_KLABEL)) 994 wd->sc_flags &= ~WDF_LOADED; 995 996 wd->atabus->ata_delref(wd->drvp); 997 } 998 999 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1000 return 0; 1001 } 1002 1003 void 1004 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1005 { 1006 1007 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1008 memset(lp, 0, sizeof(struct disklabel)); 1009 1010 lp->d_secsize = DEV_BSIZE; 1011 lp->d_ntracks = wd->sc_params.atap_heads; 1012 lp->d_nsectors = wd->sc_params.atap_sectors; 1013 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1014 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1015 wd->sc_params.atap_cylinders; 1016 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1017 1018 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1019 lp->d_type = DTYPE_ST506; 1020 else 1021 lp->d_type = DTYPE_ESDI; 1022 1023 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1024 strncpy(lp->d_packname, "fictitious", 16); 1025 if (wd->sc_capacity > UINT32_MAX) 1026 lp->d_secperunit = UINT32_MAX; 1027 else 1028 lp->d_secperunit = wd->sc_capacity; 1029 lp->d_rpm = 3600; 1030 lp->d_interleave = 1; 1031 lp->d_flags = 0; 1032 1033 lp->d_partitions[RAW_PART].p_offset = 0; 1034 lp->d_partitions[RAW_PART].p_size = 1035 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1036 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1037 lp->d_npartitions = RAW_PART + 1; 1038 1039 lp->d_magic = DISKMAGIC; 1040 lp->d_magic2 = DISKMAGIC; 1041 lp->d_checksum = dkcksum(lp); 1042 } 1043 1044 /* 1045 * Fabricate a default disk label, and try to read the correct one. 1046 */ 1047 void 1048 wdgetdisklabel(struct wd_softc *wd) 1049 { 1050 struct disklabel *lp = wd->sc_dk.dk_label; 1051 const char *errstring; 1052 int s; 1053 1054 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1055 1056 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1057 1058 wdgetdefaultlabel(wd, lp); 1059 1060 wd->sc_badsect[0] = -1; 1061 1062 if (wd->drvp->state > RESET) { 1063 s = splbio(); 1064 wd->drvp->drive_flags |= DRIVE_RESET; 1065 splx(s); 1066 } 1067 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1068 RAW_PART), wdstrategy, lp, 1069 wd->sc_dk.dk_cpulabel); 1070 if (errstring) { 1071 /* 1072 * This probably happened because the drive's default 1073 * geometry doesn't match the DOS geometry. We 1074 * assume the DOS geometry is now in the label and try 1075 * again. XXX This is a kluge. 1076 */ 1077 if (wd->drvp->state > RESET) { 1078 s = splbio(); 1079 wd->drvp->drive_flags |= DRIVE_RESET; 1080 splx(s); 1081 } 1082 errstring = readdisklabel(MAKEWDDEV(0, device_unit(&wd->sc_dev), 1083 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1084 } 1085 if (errstring) { 1086 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1087 return; 1088 } 1089 1090 if (wd->drvp->state > RESET) { 1091 s = splbio(); 1092 wd->drvp->drive_flags |= DRIVE_RESET; 1093 splx(s); 1094 } 1095 #ifdef HAS_BAD144_HANDLING 1096 if ((lp->d_flags & D_BADSECT) != 0) 1097 bad144intern(wd); 1098 #endif 1099 } 1100 1101 void 1102 wdperror(const struct wd_softc *wd) 1103 { 1104 static const char *const errstr0_3[] = {"address mark not found", 1105 "track 0 not found", "aborted command", "media change requested", 1106 "id not found", "media changed", "uncorrectable data error", 1107 "bad block detected"}; 1108 static const char *const errstr4_5[] = { 1109 "obsolete (address mark not found)", 1110 "no media/write protected", "aborted command", 1111 "media change requested", "id not found", "media changed", 1112 "uncorrectable data error", "interface CRC error"}; 1113 const char *const *errstr; 1114 int i; 1115 const char *sep = ""; 1116 1117 const char *devname = wd->sc_dev.dv_xname; 1118 struct ata_drive_datas *drvp = wd->drvp; 1119 int errno = wd->sc_wdc_bio.r_error; 1120 1121 if (drvp->ata_vers >= 4) 1122 errstr = errstr4_5; 1123 else 1124 errstr = errstr0_3; 1125 1126 printf("%s: (", devname); 1127 1128 if (errno == 0) 1129 printf("error not notified"); 1130 1131 for (i = 0; i < 8; i++) { 1132 if (errno & (1 << i)) { 1133 printf("%s%s", sep, errstr[i]); 1134 sep = ", "; 1135 } 1136 } 1137 printf(")\n"); 1138 } 1139 1140 int 1141 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct lwp *l) 1142 { 1143 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1144 int error = 0, s; 1145 #ifdef __HAVE_OLD_DISKLABEL 1146 struct disklabel *newlabel = NULL; 1147 #endif 1148 1149 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1150 1151 if ((wd->sc_flags & WDF_LOADED) == 0) 1152 return EIO; 1153 1154 switch (xfer) { 1155 #ifdef HAS_BAD144_HANDLING 1156 case DIOCSBAD: 1157 if ((flag & FWRITE) == 0) 1158 return EBADF; 1159 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1160 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1161 bad144intern(wd); 1162 return 0; 1163 #endif 1164 #ifdef WD_SOFTBADSECT 1165 case DIOCBSLIST : 1166 { 1167 u_int32_t count, missing, skip; 1168 struct disk_badsecinfo dbsi; 1169 struct disk_badsectors *dbs; 1170 size_t available; 1171 caddr_t laddr; 1172 1173 dbsi = *(struct disk_badsecinfo *)addr; 1174 missing = wd->sc_bscount; 1175 count = 0; 1176 available = dbsi.dbsi_bufsize; 1177 skip = dbsi.dbsi_skip; 1178 laddr = dbsi.dbsi_buffer; 1179 1180 /* 1181 * We start this loop with the expectation that all of the 1182 * entries will be missed and decrement this counter each 1183 * time we either skip over one (already copied out) or 1184 * we actually copy it back to user space. The structs 1185 * holding the bad sector information are copied directly 1186 * back to user space whilst the summary is returned via 1187 * the struct passed in via the ioctl. 1188 */ 1189 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1190 if (skip > 0) { 1191 missing--; 1192 skip--; 1193 continue; 1194 } 1195 if (available < sizeof(*dbs)) 1196 break; 1197 available -= sizeof(*dbs); 1198 copyout(dbs, laddr, sizeof(*dbs)); 1199 laddr += sizeof(*dbs); 1200 missing--; 1201 count++; 1202 } 1203 dbsi.dbsi_left = missing; 1204 dbsi.dbsi_copied = count; 1205 *(struct disk_badsecinfo *)addr = dbsi; 1206 return 0; 1207 } 1208 1209 case DIOCBSFLUSH : 1210 /* Clean out the bad sector list */ 1211 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1212 void *head = SLIST_FIRST(&wd->sc_bslist); 1213 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1214 free(head, M_TEMP); 1215 } 1216 wd->sc_bscount = 0; 1217 return 0; 1218 #endif 1219 case DIOCGDINFO: 1220 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1221 return 0; 1222 #ifdef __HAVE_OLD_DISKLABEL 1223 case ODIOCGDINFO: 1224 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1225 if (newlabel == NULL) 1226 return EIO; 1227 *newlabel = *(wd->sc_dk.dk_label); 1228 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1229 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1230 else 1231 error = ENOTTY; 1232 free(newlabel, M_TEMP); 1233 return error; 1234 #endif 1235 1236 case DIOCGPART: 1237 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1238 ((struct partinfo *)addr)->part = 1239 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1240 return 0; 1241 1242 case DIOCWDINFO: 1243 case DIOCSDINFO: 1244 #ifdef __HAVE_OLD_DISKLABEL 1245 case ODIOCWDINFO: 1246 case ODIOCSDINFO: 1247 #endif 1248 { 1249 struct disklabel *lp; 1250 1251 if ((flag & FWRITE) == 0) 1252 return EBADF; 1253 1254 #ifdef __HAVE_OLD_DISKLABEL 1255 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1256 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1257 if (newlabel == NULL) 1258 return EIO; 1259 memset(newlabel, 0, sizeof newlabel); 1260 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1261 lp = newlabel; 1262 } else 1263 #endif 1264 lp = (struct disklabel *)addr; 1265 1266 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1267 NULL)) != 0) 1268 goto bad; 1269 wd->sc_flags |= WDF_LABELLING; 1270 1271 error = setdisklabel(wd->sc_dk.dk_label, 1272 lp, /*wd->sc_dk.dk_openmask : */0, 1273 wd->sc_dk.dk_cpulabel); 1274 if (error == 0) { 1275 if (wd->drvp->state > RESET) { 1276 s = splbio(); 1277 wd->drvp->drive_flags |= DRIVE_RESET; 1278 splx(s); 1279 } 1280 if (xfer == DIOCWDINFO 1281 #ifdef __HAVE_OLD_DISKLABEL 1282 || xfer == ODIOCWDINFO 1283 #endif 1284 ) 1285 error = writedisklabel(WDLABELDEV(dev), 1286 wdstrategy, wd->sc_dk.dk_label, 1287 wd->sc_dk.dk_cpulabel); 1288 } 1289 1290 wd->sc_flags &= ~WDF_LABELLING; 1291 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1292 bad: 1293 #ifdef __HAVE_OLD_DISKLABEL 1294 if (newlabel != NULL) 1295 free(newlabel, M_TEMP); 1296 #endif 1297 return error; 1298 } 1299 1300 case DIOCKLABEL: 1301 if (*(int *)addr) 1302 wd->sc_flags |= WDF_KLABEL; 1303 else 1304 wd->sc_flags &= ~WDF_KLABEL; 1305 return 0; 1306 1307 case DIOCWLABEL: 1308 if ((flag & FWRITE) == 0) 1309 return EBADF; 1310 if (*(int *)addr) 1311 wd->sc_flags |= WDF_WLABEL; 1312 else 1313 wd->sc_flags &= ~WDF_WLABEL; 1314 return 0; 1315 1316 case DIOCGDEFLABEL: 1317 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1318 return 0; 1319 #ifdef __HAVE_OLD_DISKLABEL 1320 case ODIOCGDEFLABEL: 1321 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1322 if (newlabel == NULL) 1323 return EIO; 1324 wdgetdefaultlabel(wd, newlabel); 1325 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1326 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1327 else 1328 error = ENOTTY; 1329 free(newlabel, M_TEMP); 1330 return error; 1331 #endif 1332 1333 #ifdef notyet 1334 case DIOCWFORMAT: 1335 if ((flag & FWRITE) == 0) 1336 return EBADF; 1337 { 1338 register struct format_op *fop; 1339 struct iovec aiov; 1340 struct uio auio; 1341 1342 fop = (struct format_op *)addr; 1343 aiov.iov_base = fop->df_buf; 1344 aiov.iov_len = fop->df_count; 1345 auio.uio_iov = &aiov; 1346 auio.uio_iovcnt = 1; 1347 auio.uio_resid = fop->df_count; 1348 auio.uio_offset = 1349 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1350 auio.uio_vmspace = l->l_proc->p_vmspace; 1351 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1352 &auio); 1353 fop->df_count -= auio.uio_resid; 1354 fop->df_reg[0] = wdc->sc_status; 1355 fop->df_reg[1] = wdc->sc_error; 1356 return error; 1357 } 1358 #endif 1359 case DIOCGCACHE: 1360 return wd_getcache(wd, (int *)addr); 1361 1362 case DIOCSCACHE: 1363 return wd_setcache(wd, *(int *)addr); 1364 1365 case DIOCCACHESYNC: 1366 return wd_flushcache(wd, AT_WAIT); 1367 1368 case ATAIOCCOMMAND: 1369 /* 1370 * Make sure this command is (relatively) safe first 1371 */ 1372 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1373 (flag & FWRITE) == 0) 1374 return (EBADF); 1375 { 1376 struct wd_ioctl *wi; 1377 atareq_t *atareq = (atareq_t *) addr; 1378 int error1; 1379 1380 wi = wi_get(); 1381 wi->wi_softc = wd; 1382 wi->wi_atareq = *atareq; 1383 1384 if (atareq->datalen && atareq->flags & 1385 (ATACMD_READ | ATACMD_WRITE)) { 1386 wi->wi_iov.iov_base = atareq->databuf; 1387 wi->wi_iov.iov_len = atareq->datalen; 1388 wi->wi_uio.uio_iov = &wi->wi_iov; 1389 wi->wi_uio.uio_iovcnt = 1; 1390 wi->wi_uio.uio_resid = atareq->datalen; 1391 wi->wi_uio.uio_offset = 0; 1392 wi->wi_uio.uio_rw = 1393 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1394 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1395 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1396 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1397 minphys, &wi->wi_uio); 1398 } else { 1399 /* No need to call physio if we don't have any 1400 user data */ 1401 wi->wi_bp.b_flags = 0; 1402 wi->wi_bp.b_data = 0; 1403 wi->wi_bp.b_bcount = 0; 1404 wi->wi_bp.b_dev = 0; 1405 wi->wi_bp.b_proc = l->l_proc; 1406 wdioctlstrategy(&wi->wi_bp); 1407 error1 = wi->wi_bp.b_error; 1408 } 1409 *atareq = wi->wi_atareq; 1410 wi_free(wi); 1411 return(error1); 1412 } 1413 1414 case DIOCAWEDGE: 1415 { 1416 struct dkwedge_info *dkw = (void *) addr; 1417 1418 if ((flag & FWRITE) == 0) 1419 return (EBADF); 1420 1421 /* If the ioctl happens here, the parent is us. */ 1422 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1423 return (dkwedge_add(dkw)); 1424 } 1425 1426 case DIOCDWEDGE: 1427 { 1428 struct dkwedge_info *dkw = (void *) addr; 1429 1430 if ((flag & FWRITE) == 0) 1431 return (EBADF); 1432 1433 /* If the ioctl happens here, the parent is us. */ 1434 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1435 return (dkwedge_del(dkw)); 1436 } 1437 1438 case DIOCLWEDGES: 1439 { 1440 struct dkwedge_list *dkwl = (void *) addr; 1441 1442 return (dkwedge_list(&wd->sc_dk, dkwl, l)); 1443 } 1444 1445 case DIOCGSTRATEGY: 1446 { 1447 struct disk_strategy *dks = (void *)addr; 1448 1449 s = splbio(); 1450 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1451 sizeof(dks->dks_name)); 1452 splx(s); 1453 dks->dks_paramlen = 0; 1454 1455 return 0; 1456 } 1457 1458 case DIOCSSTRATEGY: 1459 { 1460 struct disk_strategy *dks = (void *)addr; 1461 struct bufq_state *new; 1462 struct bufq_state *old; 1463 1464 if ((flag & FWRITE) == 0) { 1465 return EBADF; 1466 } 1467 if (dks->dks_param != NULL) { 1468 return EINVAL; 1469 } 1470 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1471 error = bufq_alloc(&new, dks->dks_name, 1472 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1473 if (error) { 1474 return error; 1475 } 1476 s = splbio(); 1477 old = wd->sc_q; 1478 bufq_move(new, old); 1479 wd->sc_q = new; 1480 splx(s); 1481 bufq_free(old); 1482 1483 return 0; 1484 } 1485 1486 default: 1487 return ENOTTY; 1488 } 1489 1490 #ifdef DIAGNOSTIC 1491 panic("wdioctl: impossible"); 1492 #endif 1493 } 1494 1495 #ifdef B_FORMAT 1496 int 1497 wdformat(struct buf *bp) 1498 { 1499 1500 bp->b_flags |= B_FORMAT; 1501 return wdstrategy(bp); 1502 } 1503 #endif 1504 1505 int 1506 wdsize(dev_t dev) 1507 { 1508 struct wd_softc *wd; 1509 int part, omask; 1510 int size; 1511 1512 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1513 1514 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1515 if (wd == NULL) 1516 return (-1); 1517 1518 part = WDPART(dev); 1519 omask = wd->sc_dk.dk_openmask & (1 << part); 1520 1521 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1522 return (-1); 1523 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1524 size = -1; 1525 else 1526 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1527 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1528 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1529 return (-1); 1530 return (size); 1531 } 1532 1533 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1534 static int wddoingadump = 0; 1535 static int wddumprecalibrated = 0; 1536 1537 /* 1538 * Dump core after a system crash. 1539 */ 1540 int 1541 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1542 { 1543 struct wd_softc *wd; /* disk unit to do the I/O */ 1544 struct disklabel *lp; /* disk's disklabel */ 1545 int part, err; 1546 int nblks; /* total number of sectors left to write */ 1547 1548 /* Check if recursive dump; if so, punt. */ 1549 if (wddoingadump) 1550 return EFAULT; 1551 wddoingadump = 1; 1552 1553 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1554 if (wd == NULL) 1555 return (ENXIO); 1556 1557 part = WDPART(dev); 1558 1559 /* Convert to disk sectors. Request must be a multiple of size. */ 1560 lp = wd->sc_dk.dk_label; 1561 if ((size % lp->d_secsize) != 0) 1562 return EFAULT; 1563 nblks = size / lp->d_secsize; 1564 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1565 1566 /* Check transfer bounds against partition size. */ 1567 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1568 return EINVAL; 1569 1570 /* Offset block number to start of partition. */ 1571 blkno += lp->d_partitions[part].p_offset; 1572 1573 /* Recalibrate, if first dump transfer. */ 1574 if (wddumprecalibrated == 0) { 1575 wddumprecalibrated = 1; 1576 (*wd->atabus->ata_reset_drive)(wd->drvp, 1577 AT_POLL | AT_RST_EMERG); 1578 wd->drvp->state = RESET; 1579 } 1580 1581 wd->sc_bp = NULL; 1582 wd->sc_wdc_bio.blkno = blkno; 1583 wd->sc_wdc_bio.flags = ATA_POLL; 1584 if (wd->sc_flags & WDF_LBA48 && 1585 (blkno > LBA48_THRESHOLD || 1586 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1587 wd->sc_wdc_bio.flags |= ATA_LBA48; 1588 if (wd->sc_flags & WDF_LBA) 1589 wd->sc_wdc_bio.flags |= ATA_LBA; 1590 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1591 wd->sc_wdc_bio.databuf = va; 1592 #ifndef WD_DUMP_NOT_TRUSTED 1593 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1594 case ATACMD_TRY_AGAIN: 1595 panic("wddump: try again"); 1596 break; 1597 case ATACMD_QUEUED: 1598 panic("wddump: polled command has been queued"); 1599 break; 1600 case ATACMD_COMPLETE: 1601 break; 1602 } 1603 switch(wd->sc_wdc_bio.error) { 1604 case TIMEOUT: 1605 printf("wddump: device timed out"); 1606 err = EIO; 1607 break; 1608 case ERR_DF: 1609 printf("wddump: drive fault"); 1610 err = EIO; 1611 break; 1612 case ERR_DMA: 1613 printf("wddump: DMA error"); 1614 err = EIO; 1615 break; 1616 case ERROR: 1617 printf("wddump: "); 1618 wdperror(wd); 1619 err = EIO; 1620 break; 1621 case NOERROR: 1622 err = 0; 1623 break; 1624 default: 1625 panic("wddump: unknown error type"); 1626 } 1627 if (err != 0) { 1628 printf("\n"); 1629 return err; 1630 } 1631 #else /* WD_DUMP_NOT_TRUSTED */ 1632 /* Let's just talk about this first... */ 1633 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1634 unit, va, cylin, head, sector); 1635 delay(500 * 1000); /* half a second */ 1636 #endif 1637 1638 wddoingadump = 0; 1639 return 0; 1640 } 1641 1642 #ifdef HAS_BAD144_HANDLING 1643 /* 1644 * Internalize the bad sector table. 1645 */ 1646 void 1647 bad144intern(struct wd_softc *wd) 1648 { 1649 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1650 struct disklabel *lp = wd->sc_dk.dk_label; 1651 int i = 0; 1652 1653 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1654 1655 for (; i < NBT_BAD; i++) { 1656 if (bt->bt_bad[i].bt_cyl == 0xffff) 1657 break; 1658 wd->sc_badsect[i] = 1659 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1660 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1661 (bt->bt_bad[i].bt_trksec & 0xff); 1662 } 1663 for (; i < NBT_BAD+1; i++) 1664 wd->sc_badsect[i] = -1; 1665 } 1666 #endif 1667 1668 int 1669 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1670 { 1671 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1672 case CMD_AGAIN: 1673 return 1; 1674 case CMD_ERR: 1675 /* 1676 * We `know' there's a drive here; just assume it's old. 1677 * This geometry is only used to read the MBR and print a 1678 * (false) attach message. 1679 */ 1680 strncpy(params->atap_model, "ST506", 1681 sizeof params->atap_model); 1682 params->atap_config = ATA_CFG_FIXED; 1683 params->atap_cylinders = 1024; 1684 params->atap_heads = 8; 1685 params->atap_sectors = 17; 1686 params->atap_multi = 1; 1687 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1688 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1689 return 0; 1690 case CMD_OK: 1691 return 0; 1692 default: 1693 panic("wd_get_params: bad return code from ata_get_params"); 1694 /* NOTREACHED */ 1695 } 1696 } 1697 1698 int 1699 wd_getcache(struct wd_softc *wd, int *bitsp) 1700 { 1701 struct ataparams params; 1702 1703 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1704 return EIO; 1705 if (params.atap_cmd_set1 == 0x0000 || 1706 params.atap_cmd_set1 == 0xffff || 1707 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1708 *bitsp = 0; 1709 return 0; 1710 } 1711 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1712 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1713 *bitsp |= DKCACHE_WRITE; 1714 1715 return 0; 1716 } 1717 1718 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1719 1720 int 1721 wd_setcache(struct wd_softc *wd, int bits) 1722 { 1723 struct ataparams params; 1724 struct ata_command ata_c; 1725 1726 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1727 return EIO; 1728 1729 if (params.atap_cmd_set1 == 0x0000 || 1730 params.atap_cmd_set1 == 0xffff || 1731 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1732 return EOPNOTSUPP; 1733 1734 if ((bits & DKCACHE_READ) == 0 || 1735 (bits & DKCACHE_SAVE) != 0) 1736 return EOPNOTSUPP; 1737 1738 memset(&ata_c, 0, sizeof(struct ata_command)); 1739 ata_c.r_command = SET_FEATURES; 1740 ata_c.r_st_bmask = 0; 1741 ata_c.r_st_pmask = 0; 1742 ata_c.timeout = 30000; /* 30s timeout */ 1743 ata_c.flags = AT_WAIT; 1744 if (bits & DKCACHE_WRITE) 1745 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1746 else 1747 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1748 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1749 printf("%s: wd_setcache command not complete\n", 1750 wd->sc_dev.dv_xname); 1751 return EIO; 1752 } 1753 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1754 char sbuf[sizeof(at_errbits) + 64]; 1755 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1756 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1757 sbuf); 1758 return EIO; 1759 } 1760 return 0; 1761 } 1762 1763 int 1764 wd_standby(struct wd_softc *wd, int flags) 1765 { 1766 struct ata_command ata_c; 1767 1768 memset(&ata_c, 0, sizeof(struct ata_command)); 1769 ata_c.r_command = WDCC_STANDBY_IMMED; 1770 ata_c.r_st_bmask = WDCS_DRDY; 1771 ata_c.r_st_pmask = WDCS_DRDY; 1772 ata_c.flags = flags; 1773 ata_c.timeout = 30000; /* 30s timeout */ 1774 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1775 printf("%s: standby immediate command didn't complete\n", 1776 wd->sc_dev.dv_xname); 1777 return EIO; 1778 } 1779 if (ata_c.flags & AT_ERROR) { 1780 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1781 return ENODEV; 1782 } 1783 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1784 char sbuf[sizeof(at_errbits) + 64]; 1785 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1786 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1787 sbuf); 1788 return EIO; 1789 } 1790 return 0; 1791 } 1792 1793 int 1794 wd_flushcache(struct wd_softc *wd, int flags) 1795 { 1796 struct ata_command ata_c; 1797 1798 /* 1799 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1800 * only ATA-2 and still support it. 1801 */ 1802 if (wd->drvp->ata_vers < 4 && 1803 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1804 wd->sc_params.atap_cmd_set2 == 0xffff)) 1805 return ENODEV; 1806 memset(&ata_c, 0, sizeof(struct ata_command)); 1807 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1808 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1809 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1810 else 1811 ata_c.r_command = WDCC_FLUSHCACHE; 1812 ata_c.r_st_bmask = WDCS_DRDY; 1813 ata_c.r_st_pmask = WDCS_DRDY; 1814 ata_c.flags = flags; 1815 ata_c.timeout = 30000; /* 30s timeout */ 1816 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1817 printf("%s: flush cache command didn't complete\n", 1818 wd->sc_dev.dv_xname); 1819 return EIO; 1820 } 1821 if (ata_c.flags & AT_ERROR) { 1822 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1823 return ENODEV; 1824 } 1825 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1826 char sbuf[sizeof(at_errbits) + 64]; 1827 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1828 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1829 sbuf); 1830 return EIO; 1831 } 1832 return 0; 1833 } 1834 1835 void 1836 wd_shutdown(void *arg) 1837 { 1838 struct wd_softc *wd = arg; 1839 wd_flushcache(wd, AT_POLL); 1840 } 1841 1842 /* 1843 * Allocate space for a ioctl queue structure. Mostly taken from 1844 * scsipi_ioctl.c 1845 */ 1846 struct wd_ioctl * 1847 wi_get(void) 1848 { 1849 struct wd_ioctl *wi; 1850 int s; 1851 1852 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1853 simple_lock_init(&wi->wi_bp.b_interlock); 1854 s = splbio(); 1855 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1856 splx(s); 1857 return (wi); 1858 } 1859 1860 /* 1861 * Free an ioctl structure and remove it from our list 1862 */ 1863 1864 void 1865 wi_free(struct wd_ioctl *wi) 1866 { 1867 int s; 1868 1869 s = splbio(); 1870 LIST_REMOVE(wi, wi_list); 1871 splx(s); 1872 free(wi, M_TEMP); 1873 } 1874 1875 /* 1876 * Find a wd_ioctl structure based on the struct buf. 1877 */ 1878 1879 struct wd_ioctl * 1880 wi_find(struct buf *bp) 1881 { 1882 struct wd_ioctl *wi; 1883 int s; 1884 1885 s = splbio(); 1886 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1887 if (bp == &wi->wi_bp) 1888 break; 1889 splx(s); 1890 return (wi); 1891 } 1892 1893 /* 1894 * Ioctl pseudo strategy routine 1895 * 1896 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1897 * happens here is: 1898 * 1899 * - wdioctl() queues a wd_ioctl structure. 1900 * 1901 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1902 * user space I/O is required. If physio() is called, physio() eventually 1903 * calls wdioctlstrategy(). 1904 * 1905 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1906 * to perform the actual command 1907 * 1908 * The reason for the use of the pseudo strategy routine is because 1909 * when doing I/O to/from user space, physio _really_ wants to be in 1910 * the loop. We could put the entire buffer into the ioctl request 1911 * structure, but that won't scale if we want to do things like download 1912 * microcode. 1913 */ 1914 1915 void 1916 wdioctlstrategy(struct buf *bp) 1917 { 1918 struct wd_ioctl *wi; 1919 struct ata_command ata_c; 1920 int error = 0; 1921 1922 wi = wi_find(bp); 1923 if (wi == NULL) { 1924 printf("wdioctlstrategy: " 1925 "No matching ioctl request found in queue\n"); 1926 error = EINVAL; 1927 goto bad; 1928 } 1929 1930 memset(&ata_c, 0, sizeof(ata_c)); 1931 1932 /* 1933 * Abort if physio broke up the transfer 1934 */ 1935 1936 if (bp->b_bcount != wi->wi_atareq.datalen) { 1937 printf("physio split wd ioctl request... cannot proceed\n"); 1938 error = EIO; 1939 goto bad; 1940 } 1941 1942 /* 1943 * Abort if we didn't get a buffer size that was a multiple of 1944 * our sector size (or was larger than NBBY) 1945 */ 1946 1947 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1948 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1949 (1 << NBBY)) { 1950 error = EINVAL; 1951 goto bad; 1952 } 1953 1954 /* 1955 * Make sure a timeout was supplied in the ioctl request 1956 */ 1957 1958 if (wi->wi_atareq.timeout == 0) { 1959 error = EINVAL; 1960 goto bad; 1961 } 1962 1963 if (wi->wi_atareq.flags & ATACMD_READ) 1964 ata_c.flags |= AT_READ; 1965 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1966 ata_c.flags |= AT_WRITE; 1967 1968 if (wi->wi_atareq.flags & ATACMD_READREG) 1969 ata_c.flags |= AT_READREG; 1970 1971 ata_c.flags |= AT_WAIT; 1972 1973 ata_c.timeout = wi->wi_atareq.timeout; 1974 ata_c.r_command = wi->wi_atareq.command; 1975 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1976 ata_c.r_cyl = wi->wi_atareq.cylinder; 1977 ata_c.r_sector = wi->wi_atareq.sec_num; 1978 ata_c.r_count = wi->wi_atareq.sec_count; 1979 ata_c.r_features = wi->wi_atareq.features; 1980 ata_c.r_st_bmask = WDCS_DRDY; 1981 ata_c.r_st_pmask = WDCS_DRDY; 1982 ata_c.data = wi->wi_bp.b_data; 1983 ata_c.bcount = wi->wi_bp.b_bcount; 1984 1985 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1986 != ATACMD_COMPLETE) { 1987 wi->wi_atareq.retsts = ATACMD_ERROR; 1988 goto bad; 1989 } 1990 1991 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1992 if (ata_c.flags & AT_ERROR) { 1993 wi->wi_atareq.retsts = ATACMD_ERROR; 1994 wi->wi_atareq.error = ata_c.r_error; 1995 } else if (ata_c.flags & AT_DF) 1996 wi->wi_atareq.retsts = ATACMD_DF; 1997 else 1998 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1999 } else { 2000 wi->wi_atareq.retsts = ATACMD_OK; 2001 if (wi->wi_atareq.flags & ATACMD_READREG) { 2002 wi->wi_atareq.head = ata_c.r_head ; 2003 wi->wi_atareq.cylinder = ata_c.r_cyl; 2004 wi->wi_atareq.sec_num = ata_c.r_sector; 2005 wi->wi_atareq.sec_count = ata_c.r_count; 2006 wi->wi_atareq.features = ata_c.r_features; 2007 wi->wi_atareq.error = ata_c.r_error; 2008 } 2009 } 2010 2011 bp->b_error = 0; 2012 biodone(bp); 2013 return; 2014 bad: 2015 bp->b_flags |= B_ERROR; 2016 bp->b_error = error; 2017 biodone(bp); 2018 } 2019
Indexes created Sun Oct 19 16:10:00 GMT 2025