wd.c revision 1.427
1 /* $NetBSD: wd.c,v 1.427 2016/11/20 02:35:19 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /*- 28 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Charles M. Hannum and by Onno van der Linden. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.427 2016/11/20 02:35:19 pgoyette Exp $"); 58 59 #include "opt_ata.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/conf.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/buf.h> 69 #include <sys/bufq.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/proc.h> 77 #include <sys/reboot.h> 78 #include <sys/vnode.h> 79 #include <sys/rndsource.h> 80 81 #include <sys/intr.h> 82 #include <sys/bus.h> 83 84 #include <dev/ata/atareg.h> 85 #include <dev/ata/atavar.h> 86 #include <dev/ata/wdvar.h> 87 #include <dev/ic/wdcreg.h> 88 #include <sys/ataio.h> 89 #include "locators.h" 90 91 #include <prop/proplib.h> 92 93 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 94 #define WDIORETRIES 5 /* number of retries before giving up */ 95 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 96 97 #define WDUNIT(dev) DISKUNIT(dev) 98 #define WDPART(dev) DISKPART(dev) 99 #define WDMINOR(unit, part) DISKMINOR(unit, part) 100 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 101 102 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 103 104 #define DEBUG_INTR 0x01 105 #define DEBUG_XFERS 0x02 106 #define DEBUG_STATUS 0x04 107 #define DEBUG_FUNCS 0x08 108 #define DEBUG_PROBE 0x10 109 #ifdef ATADEBUG 110 int wdcdebug_wd_mask = 0x0; 111 #define ATADEBUG_PRINT(args, level) \ 112 if (wdcdebug_wd_mask & (level)) \ 113 printf args 114 #else 115 #define ATADEBUG_PRINT(args, level) 116 #endif 117 118 int wdprobe(device_t, cfdata_t, void *); 119 void wdattach(device_t, device_t, void *); 120 int wddetach(device_t, int); 121 int wdprint(void *, char *); 122 void wdperror(const struct wd_softc *); 123 124 static void wdminphys(struct buf *); 125 126 static int wdlastclose(device_t); 127 static bool wd_suspend(device_t, const pmf_qual_t *); 128 static int wd_standby(struct wd_softc *, int); 129 130 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 131 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 132 133 extern struct cfdriver wd_cd; 134 135 dev_type_open(wdopen); 136 dev_type_close(wdclose); 137 dev_type_read(wdread); 138 dev_type_write(wdwrite); 139 dev_type_ioctl(wdioctl); 140 dev_type_strategy(wdstrategy); 141 dev_type_dump(wddump); 142 dev_type_size(wdsize); 143 static dev_type_discard(wddiscard); 144 145 const struct bdevsw wd_bdevsw = { 146 .d_open = wdopen, 147 .d_close = wdclose, 148 .d_strategy = wdstrategy, 149 .d_ioctl = wdioctl, 150 .d_dump = wddump, 151 .d_psize = wdsize, 152 .d_discard = wddiscard, 153 .d_flag = D_DISK 154 }; 155 156 const struct cdevsw wd_cdevsw = { 157 .d_open = wdopen, 158 .d_close = wdclose, 159 .d_read = wdread, 160 .d_write = wdwrite, 161 .d_ioctl = wdioctl, 162 .d_stop = nostop, 163 .d_tty = notty, 164 .d_poll = nopoll, 165 .d_mmap = nommap, 166 .d_kqfilter = nokqfilter, 167 .d_discard = wddiscard, 168 .d_flag = D_DISK 169 }; 170 171 /* 172 * Glue necessary to hook WDCIOCCOMMAND into physio 173 */ 174 175 struct wd_ioctl { 176 LIST_ENTRY(wd_ioctl) wi_list; 177 struct buf wi_bp; 178 struct uio wi_uio; 179 struct iovec wi_iov; 180 atareq_t wi_atareq; 181 struct wd_softc *wi_softc; 182 }; 183 184 LIST_HEAD(, wd_ioctl) wi_head; 185 186 struct wd_ioctl *wi_find(struct buf *); 187 void wi_free(struct wd_ioctl *); 188 struct wd_ioctl *wi_get(void); 189 void wdioctlstrategy(struct buf *); 190 191 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 192 void wdgetdisklabel(struct wd_softc *); 193 void wdstart(void *); 194 void wdstart1(struct wd_softc*, struct buf *); 195 void wdrestart(void *); 196 void wddone(void *); 197 static void wd_params_to_properties(struct wd_softc *); 198 int wd_get_params(struct wd_softc *, uint8_t, struct ataparams *); 199 int wd_flushcache(struct wd_softc *, int); 200 int wd_trim(struct wd_softc *, int, daddr_t, long); 201 bool wd_shutdown(device_t, int); 202 203 int wd_getcache(struct wd_softc *, int *); 204 int wd_setcache(struct wd_softc *, int); 205 206 struct dkdriver wddkdriver = { 207 .d_strategy = wdstrategy, 208 .d_minphys = wdminphys 209 }; 210 211 #ifdef HAS_BAD144_HANDLING 212 static void bad144intern(struct wd_softc *); 213 #endif 214 215 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 216 217 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 218 219 /* 220 * Quirk table for IDE drives. Put more-specific matches first, since 221 * a simple globing routine is used for matching. 222 */ 223 static const struct wd_quirk { 224 const char *wdq_match; /* inquiry pattern to match */ 225 int wdq_quirks; /* drive quirks */ 226 } wd_quirk_table[] = { 227 /* 228 * Some Seagate S-ATA drives have a PHY which can get confused 229 * with the way data is packetized by some S-ATA controllers. 230 * 231 * The work-around is to split in two any write transfer whose 232 * sector count % 15 == 1 (assuming 512 byte sectors). 233 * 234 * XXX This is an incomplete list. There are at least a couple 235 * XXX more model numbers. If you have trouble with such transfers 236 * XXX (8K is the most common) on Seagate S-ATA drives, please 237 * XXX notify thorpej (at) NetBSD.org. 238 * 239 * The ST360015AS has not yet been confirmed to have this 240 * issue, however, it is the only other drive in the 241 * Seagate Barracuda Serial ATA V family. 242 * 243 */ 244 { "ST3120023AS", 245 WD_QUIRK_SPLIT_MOD15_WRITE }, 246 { "ST380023AS", 247 WD_QUIRK_SPLIT_MOD15_WRITE }, 248 { "ST360015AS", 249 WD_QUIRK_SPLIT_MOD15_WRITE }, 250 { NULL, 251 0 } 252 }; 253 254 static const struct wd_quirk * 255 wd_lookup_quirks(const char *name) 256 { 257 const struct wd_quirk *wdq; 258 const char *estr; 259 260 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 261 /* 262 * We only want exact matches (which include matches 263 * against globbing characters). 264 */ 265 if (pmatch(name, wdq->wdq_match, &estr) == 2) 266 return (wdq); 267 } 268 return (NULL); 269 } 270 271 int 272 wdprobe(device_t parent, cfdata_t match, void *aux) 273 { 274 struct ata_device *adev = aux; 275 276 if (adev == NULL) 277 return 0; 278 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 279 return 0; 280 281 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 282 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 283 return 0; 284 return 1; 285 } 286 287 void 288 wdattach(device_t parent, device_t self, void *aux) 289 { 290 struct wd_softc *wd = device_private(self); 291 struct ata_device *adev= aux; 292 int i, blank; 293 char tbuf[41], pbuf[9], c, *p, *q; 294 const struct wd_quirk *wdq; 295 296 wd->sc_dev = self; 297 298 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 299 callout_init(&wd->sc_restart_ch, 0); 300 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 301 #ifdef WD_SOFTBADSECT 302 SLIST_INIT(&wd->sc_bslist); 303 #endif 304 wd->atabus = adev->adev_bustype; 305 wd->openings = adev->adev_openings; 306 wd->drvp = adev->adev_drv_data; 307 308 wd->drvp->drv_done = wddone; 309 wd->drvp->drv_softc = wd->sc_dev; /* done in atabusconfig_thread() 310 but too late */ 311 312 aprint_naive("\n"); 313 aprint_normal("\n"); 314 315 /* read our drive info */ 316 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 317 aprint_error_dev(self, "IDENTIFY failed\n"); 318 goto out; 319 } 320 321 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 322 i < sizeof(wd->sc_params.atap_model); i++) { 323 c = *p++; 324 if (c == '\0') 325 break; 326 if (c != ' ') { 327 if (blank) { 328 *q++ = ' '; 329 blank = 0; 330 } 331 *q++ = c; 332 } else 333 blank = 1; 334 } 335 *q++ = '\0'; 336 337 aprint_normal_dev(self, "<%s>\n", tbuf); 338 339 wdq = wd_lookup_quirks(tbuf); 340 if (wdq != NULL) 341 wd->sc_quirks = wdq->wdq_quirks; 342 343 if (wd->sc_quirks != 0) { 344 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 345 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 346 aprint_normal_dev(self, "quirks %s\n", sbuf); 347 } 348 349 if ((wd->sc_params.atap_multi & 0xff) > 1) { 350 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 351 } else { 352 wd->sc_multi = 1; 353 } 354 355 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 356 wd->sc_multi); 357 358 /* 48-bit LBA addressing */ 359 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 360 wd->sc_flags |= WDF_LBA48; 361 362 /* Prior to ATA-4, LBA was optional. */ 363 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 364 wd->sc_flags |= WDF_LBA; 365 #if 0 366 /* ATA-4 requires LBA. */ 367 if (wd->sc_params.atap_ataversion != 0xffff && 368 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 369 wd->sc_flags |= WDF_LBA; 370 #endif 371 372 if ((wd->sc_flags & WDF_LBA48) != 0) { 373 aprint_verbose(" LBA48 addressing\n"); 374 wd->sc_capacity = 375 ((uint64_t) wd->sc_params.atap_max_lba[3] << 48) | 376 ((uint64_t) wd->sc_params.atap_max_lba[2] << 32) | 377 ((uint64_t) wd->sc_params.atap_max_lba[1] << 16) | 378 ((uint64_t) wd->sc_params.atap_max_lba[0] << 0); 379 wd->sc_capacity28 = 380 (wd->sc_params.atap_capacity[1] << 16) | 381 wd->sc_params.atap_capacity[0]; 382 } else if ((wd->sc_flags & WDF_LBA) != 0) { 383 aprint_verbose(" LBA addressing\n"); 384 wd->sc_capacity28 = wd->sc_capacity = 385 (wd->sc_params.atap_capacity[1] << 16) | 386 wd->sc_params.atap_capacity[0]; 387 } else { 388 aprint_verbose(" chs addressing\n"); 389 wd->sc_capacity28 = wd->sc_capacity = 390 wd->sc_params.atap_cylinders * 391 wd->sc_params.atap_heads * 392 wd->sc_params.atap_sectors; 393 } 394 if ((wd->sc_params.atap_secsz & ATA_SECSZ_VALID_MASK) == ATA_SECSZ_VALID 395 && ((wd->sc_params.atap_secsz & ATA_SECSZ_LLS) != 0)) { 396 wd->sc_blksize = 2ULL * 397 ((uint32_t)((wd->sc_params.atap_lls_secsz[1] << 16) | 398 wd->sc_params.atap_lls_secsz[0])); 399 } else { 400 wd->sc_blksize = 512; 401 } 402 wd->sc_capacity512 = (wd->sc_capacity * wd->sc_blksize) / DEV_BSIZE; 403 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * wd->sc_blksize); 404 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 405 "%d bytes/sect x %llu sectors\n", 406 pbuf, 407 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 408 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 409 wd->sc_params.atap_cylinders, 410 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 411 wd->sc_blksize, (unsigned long long)wd->sc_capacity); 412 413 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 414 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 415 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 416 417 if (wd->sc_blksize <= 0 || !powerof2(wd->sc_blksize) || 418 wd->sc_blksize < DEV_BSIZE || wd->sc_blksize > MAXPHYS) { 419 aprint_normal_dev(self, "WARNING: block size %u " 420 "might not actually work\n", wd->sc_blksize); 421 } 422 out: 423 /* 424 * Initialize and attach the disk structure. 425 */ 426 /* we fill in dk_info later */ 427 disk_init(&wd->sc_dk, device_xname(wd->sc_dev), &wddkdriver); 428 disk_attach(&wd->sc_dk); 429 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 430 wd_params_to_properties(wd); 431 rnd_attach_source(&wd->rnd_source, device_xname(wd->sc_dev), 432 RND_TYPE_DISK, RND_FLAG_DEFAULT); 433 434 /* Discover wedges on this disk. */ 435 dkwedge_discover(&wd->sc_dk); 436 437 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 438 aprint_error_dev(self, "couldn't establish power handler\n"); 439 } 440 441 static bool 442 wd_suspend(device_t dv, const pmf_qual_t *qual) 443 { 444 struct wd_softc *sc = device_private(dv); 445 446 /* the adapter needs to be enabled */ 447 if (sc->atabus->ata_addref(sc->drvp)) 448 return true; /* no need to complain */ 449 450 wd_flushcache(sc, AT_WAIT); 451 wd_standby(sc, AT_WAIT); 452 453 sc->atabus->ata_delref(sc->drvp); 454 return true; 455 } 456 457 int 458 wddetach(device_t self, int flags) 459 { 460 struct wd_softc *sc = device_private(self); 461 int bmaj, cmaj, i, mn, rc, s; 462 463 if ((rc = disk_begindetach(&sc->sc_dk, wdlastclose, self, flags)) != 0) 464 return rc; 465 466 /* locate the major number */ 467 bmaj = bdevsw_lookup_major(&wd_bdevsw); 468 cmaj = cdevsw_lookup_major(&wd_cdevsw); 469 470 /* Nuke the vnodes for any open instances. */ 471 for (i = 0; i < MAXPARTITIONS; i++) { 472 mn = WDMINOR(device_unit(self), i); 473 vdevgone(bmaj, mn, mn, VBLK); 474 vdevgone(cmaj, mn, mn, VCHR); 475 } 476 477 /* Delete all of our wedges. */ 478 dkwedge_delall(&sc->sc_dk); 479 480 s = splbio(); 481 482 /* Kill off any queued buffers. */ 483 bufq_drain(sc->sc_q); 484 485 sc->atabus->ata_killpending(sc->drvp); 486 if (flags & DETACH_POWEROFF) 487 wd_standby(sc, AT_POLL); 488 489 splx(s); 490 bufq_free(sc->sc_q); 491 492 /* Detach disk. */ 493 disk_detach(&sc->sc_dk); 494 disk_destroy(&sc->sc_dk); 495 496 #ifdef WD_SOFTBADSECT 497 /* Clean out the bad sector list */ 498 while (!SLIST_EMPTY(&sc->sc_bslist)) { 499 void *head = SLIST_FIRST(&sc->sc_bslist); 500 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 501 free(head, M_TEMP); 502 } 503 sc->sc_bscount = 0; 504 #endif 505 506 pmf_device_deregister(self); 507 508 /* Unhook the entropy source. */ 509 rnd_detach_source(&sc->rnd_source); 510 511 callout_destroy(&sc->sc_restart_ch); 512 513 sc->drvp->drive_type = ATA_DRIVET_NONE; /* no drive any more here */ 514 sc->drvp->drive_flags = 0; 515 516 return (0); 517 } 518 519 /* 520 * Read/write routine for a buffer. Validates the arguments and schedules the 521 * transfer. Does not wait for the transfer to complete. 522 */ 523 void 524 wdstrategy(struct buf *bp) 525 { 526 struct wd_softc *wd = 527 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 528 struct disklabel *lp = wd->sc_dk.dk_label; 529 daddr_t blkno; 530 int s; 531 532 ATADEBUG_PRINT(("wdstrategy (%s)\n", device_xname(wd->sc_dev)), 533 DEBUG_XFERS); 534 535 /* Valid request? */ 536 if (bp->b_blkno < 0 || 537 (bp->b_bcount % lp->d_secsize) != 0 || 538 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 539 bp->b_error = EINVAL; 540 goto done; 541 } 542 543 /* If device invalidated (e.g. media change, door open, 544 * device detachment), then error. 545 */ 546 if ((wd->sc_flags & WDF_LOADED) == 0 || 547 !device_is_enabled(wd->sc_dev)) { 548 bp->b_error = EIO; 549 goto done; 550 } 551 552 /* If it's a null transfer, return immediately. */ 553 if (bp->b_bcount == 0) 554 goto done; 555 556 /* 557 * Do bounds checking, adjust transfer. if error, process. 558 * If end of partition, just return. 559 */ 560 if (WDPART(bp->b_dev) == RAW_PART) { 561 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 562 wd->sc_capacity512) <= 0) 563 goto done; 564 } else { 565 if (bounds_check_with_label(&wd->sc_dk, bp, 566 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 567 goto done; 568 } 569 570 /* 571 * Now convert the block number to absolute and put it in 572 * terms of the device's logical block size. 573 */ 574 if (lp->d_secsize >= DEV_BSIZE) 575 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 576 else 577 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 578 579 if (WDPART(bp->b_dev) != RAW_PART) 580 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 581 582 bp->b_rawblkno = blkno; 583 584 #ifdef WD_SOFTBADSECT 585 /* 586 * If the transfer about to be attempted contains only a block that 587 * is known to be bad then return an error for the transfer without 588 * even attempting to start a transfer up under the premis that we 589 * will just end up doing more retries for a transfer that will end 590 * up failing again. 591 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 592 */ 593 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 594 struct disk_badsectors *dbs; 595 daddr_t maxblk = blkno + (bp->b_bcount / wd->sc_blksize) - 1; 596 597 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 598 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 599 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 600 bp->b_error = EIO; 601 goto done; 602 } 603 } 604 #endif 605 606 /* Queue transfer on drive, activate drive and controller if idle. */ 607 s = splbio(); 608 bufq_put(wd->sc_q, bp); 609 wdstart(wd); 610 splx(s); 611 return; 612 done: 613 /* Toss transfer; we're done early. */ 614 bp->b_resid = bp->b_bcount; 615 biodone(bp); 616 } 617 618 /* 619 * Queue a drive for I/O. 620 */ 621 void 622 wdstart(void *arg) 623 { 624 struct wd_softc *wd = arg; 625 struct buf *bp = NULL; 626 627 ATADEBUG_PRINT(("wdstart %s\n", device_xname(wd->sc_dev)), 628 DEBUG_XFERS); 629 630 if (!device_is_active(wd->sc_dev)) 631 return; 632 633 while (wd->openings > 0) { 634 635 /* Is there a buf for us ? */ 636 if ((bp = bufq_get(wd->sc_q)) == NULL) 637 return; 638 639 /* 640 * Make the command. First lock the device 641 */ 642 wd->openings--; 643 644 wd->retries = 0; 645 wdstart1(wd, bp); 646 } 647 } 648 649 static void 650 wd_split_mod15_write(struct buf *bp) 651 { 652 struct buf *obp = bp->b_private; 653 struct wd_softc *sc = 654 device_lookup_private(&wd_cd, DISKUNIT(obp->b_dev)); 655 int s; 656 657 if (__predict_false(bp->b_error != 0)) { 658 /* 659 * Propagate the error. If this was the first half of 660 * the original transfer, make sure to account for that 661 * in the residual. 662 */ 663 if (bp->b_data == obp->b_data) 664 bp->b_resid += bp->b_bcount; 665 goto done; 666 } 667 668 /* 669 * If this was the second half of the transfer, we're all done! 670 */ 671 if (bp->b_data != obp->b_data) 672 goto done; 673 674 /* 675 * Advance the pointer to the second half and issue that command 676 * using the same opening. 677 */ 678 bp->b_flags = obp->b_flags; 679 bp->b_oflags = obp->b_oflags; 680 bp->b_cflags = obp->b_cflags; 681 bp->b_data = (char *)bp->b_data + bp->b_bcount; 682 bp->b_blkno += (bp->b_bcount / DEV_BSIZE); 683 bp->b_rawblkno += (bp->b_bcount / sc->sc_blksize); 684 s = splbio(); 685 wdstart1(sc, bp); 686 splx(s); 687 return; 688 689 done: 690 obp->b_error = bp->b_error; 691 obp->b_resid = bp->b_resid; 692 s = splbio(); 693 putiobuf(bp); 694 biodone(obp); 695 sc->openings++; 696 splx(s); 697 /* wddone() will call wdstart() */ 698 } 699 700 void 701 wdstart1(struct wd_softc *wd, struct buf *bp) 702 { 703 704 /* 705 * Deal with the "split mod15 write" quirk. We just divide the 706 * transfer in two, doing the first half and then then second half 707 * with the same command opening. 708 * 709 * Note we MUST do this here, because we can't let insertion 710 * into the bufq cause the transfers to be re-merged. 711 */ 712 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 713 (bp->b_flags & B_READ) == 0 && 714 bp->b_bcount > 512 && 715 ((bp->b_bcount / 512) % 15) == 1)) { 716 struct buf *nbp; 717 718 /* already at splbio */ 719 nbp = getiobuf(NULL, false); 720 if (__predict_false(nbp == NULL)) { 721 /* No memory -- fail the iop. */ 722 bp->b_error = ENOMEM; 723 bp->b_resid = bp->b_bcount; 724 biodone(bp); 725 wd->openings++; 726 return; 727 } 728 729 nbp->b_error = 0; 730 nbp->b_proc = bp->b_proc; 731 nbp->b_dev = bp->b_dev; 732 733 nbp->b_bcount = bp->b_bcount / 2; 734 nbp->b_bufsize = bp->b_bcount / 2; 735 nbp->b_data = bp->b_data; 736 737 nbp->b_blkno = bp->b_blkno; 738 nbp->b_rawblkno = bp->b_rawblkno; 739 740 nbp->b_flags = bp->b_flags; 741 nbp->b_oflags = bp->b_oflags; 742 nbp->b_cflags = bp->b_cflags; 743 nbp->b_iodone = wd_split_mod15_write; 744 745 /* Put ptr to orig buf in b_private and use new buf */ 746 nbp->b_private = bp; 747 748 BIO_COPYPRIO(nbp, bp); 749 750 bp = nbp; 751 } 752 753 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 754 wd->sc_wdc_bio.bcount = bp->b_bcount; 755 wd->sc_wdc_bio.databuf = bp->b_data; 756 wd->sc_wdc_bio.blkdone =0; 757 KASSERT(bp == wd->sc_bp || wd->sc_bp == NULL); 758 wd->sc_bp = bp; 759 /* 760 * If we're retrying, retry in single-sector mode. This will give us 761 * the sector number of the problem, and will eventually allow the 762 * transfer to succeed. 763 */ 764 if (wd->retries >= WDIORETRIES_SINGLE) 765 wd->sc_wdc_bio.flags = ATA_SINGLE; 766 else 767 wd->sc_wdc_bio.flags = 0; 768 if (wd->sc_flags & WDF_LBA48 && 769 (wd->sc_wdc_bio.blkno + 770 wd->sc_wdc_bio.bcount / wd->sc_dk.dk_label->d_secsize) > 771 wd->sc_capacity28) 772 wd->sc_wdc_bio.flags |= ATA_LBA48; 773 if (wd->sc_flags & WDF_LBA) 774 wd->sc_wdc_bio.flags |= ATA_LBA; 775 if (bp->b_flags & B_READ) 776 wd->sc_wdc_bio.flags |= ATA_READ; 777 /* Instrumentation. */ 778 disk_busy(&wd->sc_dk); 779 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 780 case ATACMD_TRY_AGAIN: 781 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 782 break; 783 case ATACMD_QUEUED: 784 case ATACMD_COMPLETE: 785 break; 786 default: 787 panic("wdstart1: bad return code from ata_bio()"); 788 } 789 } 790 791 void 792 wddone(void *v) 793 { 794 struct wd_softc *wd = device_private(v); 795 struct buf *bp = wd->sc_bp; 796 const char *errmsg; 797 int do_perror = 0; 798 799 ATADEBUG_PRINT(("wddone %s\n", device_xname(wd->sc_dev)), 800 DEBUG_XFERS); 801 if (bp == NULL) 802 return; 803 bp->b_resid = wd->sc_wdc_bio.bcount; 804 switch (wd->sc_wdc_bio.error) { 805 case ERR_DMA: 806 errmsg = "DMA error"; 807 goto retry; 808 case ERR_DF: 809 errmsg = "device fault"; 810 goto retry; 811 case TIMEOUT: 812 errmsg = "device timeout"; 813 goto retry; 814 case ERR_RESET: 815 errmsg = "channel reset"; 816 goto retry2; 817 case ERROR: 818 /* Don't care about media change bits */ 819 if (wd->sc_wdc_bio.r_error != 0 && 820 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 821 goto noerror; 822 errmsg = "error"; 823 do_perror = 1; 824 retry: /* Just reset and retry. Can we do more ? */ 825 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD, NULL); 826 retry2: 827 diskerr(bp, "wd", errmsg, LOG_PRINTF, 828 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 829 if (wd->retries < WDIORETRIES) 830 printf(", retrying"); 831 printf("\n"); 832 if (do_perror) 833 wdperror(wd); 834 if (wd->retries < WDIORETRIES) { 835 wd->retries++; 836 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 837 wdrestart, wd); 838 return; 839 } 840 841 #ifdef WD_SOFTBADSECT 842 /* 843 * Not all errors indicate a failed block but those that do, 844 * put the block on the bad-block list for the device. Only 845 * do this for reads because the drive should do it for writes, 846 * itself, according to Manuel. 847 */ 848 if ((bp->b_flags & B_READ) && 849 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 850 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 851 struct disk_badsectors *dbs; 852 853 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 854 dbs->dbs_min = bp->b_rawblkno; 855 dbs->dbs_max = dbs->dbs_min + 856 (bp->b_bcount /wd->sc_blksize) - 1; 857 microtime(&dbs->dbs_failedat); 858 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 859 wd->sc_bscount++; 860 } 861 #endif 862 bp->b_error = EIO; 863 break; 864 case NOERROR: 865 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 866 aprint_error_dev(wd->sc_dev, 867 "soft error (corrected)\n"); 868 break; 869 case ERR_NODEV: 870 bp->b_error = EIO; 871 break; 872 } 873 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 874 /* 875 * the disk or controller sometimes report a complete 876 * xfer, when there has been an error. This is wrong, 877 * assume nothing got transfered in this case 878 */ 879 bp->b_resid = bp->b_bcount; 880 } 881 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 882 (bp->b_flags & B_READ)); 883 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 884 /* XXX Yuck, but we don't want to increment openings in this case */ 885 if (__predict_false(bp->b_iodone == wd_split_mod15_write)) 886 biodone(bp); 887 else { 888 biodone(bp); 889 wd->openings++; 890 } 891 KASSERT(wd->sc_bp != NULL); 892 wd->sc_bp = NULL; 893 wdstart(wd); 894 } 895 896 void 897 wdrestart(void *v) 898 { 899 struct wd_softc *wd = v; 900 struct buf *bp = wd->sc_bp; 901 int s; 902 903 ATADEBUG_PRINT(("wdrestart %s\n", device_xname(wd->sc_dev)), 904 DEBUG_XFERS); 905 s = splbio(); 906 wdstart1(v, bp); 907 splx(s); 908 } 909 910 static void 911 wdminphys(struct buf *bp) 912 { 913 const struct wd_softc * const wd = 914 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 915 916 if (bp->b_bcount > (wd->sc_blksize * 128)) { 917 bp->b_bcount = (wd->sc_blksize * 128); 918 } 919 minphys(bp); 920 } 921 922 int 923 wdread(dev_t dev, struct uio *uio, int flags) 924 { 925 926 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 927 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 928 } 929 930 int 931 wdwrite(dev_t dev, struct uio *uio, int flags) 932 { 933 934 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 935 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 936 } 937 938 int 939 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 940 { 941 struct wd_softc *wd; 942 int part, error; 943 944 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 945 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 946 if (wd == NULL) 947 return (ENXIO); 948 949 if (! device_is_active(wd->sc_dev)) 950 return (ENODEV); 951 952 if (wd->sc_capacity == 0) 953 return (ENODEV); 954 955 part = WDPART(dev); 956 957 mutex_enter(&wd->sc_dk.dk_openlock); 958 959 /* 960 * If there are wedges, and this is not RAW_PART, then we 961 * need to fail. 962 */ 963 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 964 error = EBUSY; 965 goto bad1; 966 } 967 968 /* 969 * If this is the first open of this device, add a reference 970 * to the adapter. 971 */ 972 if (wd->sc_dk.dk_openmask == 0 && 973 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 974 goto bad1; 975 976 if (wd->sc_dk.dk_openmask != 0) { 977 /* 978 * If any partition is open, but the disk has been invalidated, 979 * disallow further opens. 980 */ 981 if ((wd->sc_flags & WDF_LOADED) == 0) { 982 error = EIO; 983 goto bad2; 984 } 985 } else { 986 if ((wd->sc_flags & WDF_LOADED) == 0) { 987 988 /* Load the physical device parameters. */ 989 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 990 aprint_error_dev(wd->sc_dev, 991 "IDENTIFY failed\n"); 992 error = EIO; 993 goto bad2; 994 } 995 wd->sc_flags |= WDF_LOADED; 996 /* Load the partition info if not already loaded. */ 997 wdgetdisklabel(wd); 998 } 999 } 1000 1001 /* Check that the partition exists. */ 1002 if (part != RAW_PART && 1003 (part >= wd->sc_dk.dk_label->d_npartitions || 1004 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1005 error = ENXIO; 1006 goto bad2; 1007 } 1008 1009 /* Insure only one open at a time. */ 1010 switch (fmt) { 1011 case S_IFCHR: 1012 wd->sc_dk.dk_copenmask |= (1 << part); 1013 break; 1014 case S_IFBLK: 1015 wd->sc_dk.dk_bopenmask |= (1 << part); 1016 break; 1017 } 1018 wd->sc_dk.dk_openmask = 1019 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1020 1021 mutex_exit(&wd->sc_dk.dk_openlock); 1022 return 0; 1023 1024 bad2: 1025 if (wd->sc_dk.dk_openmask == 0) 1026 wd->atabus->ata_delref(wd->drvp); 1027 bad1: 1028 mutex_exit(&wd->sc_dk.dk_openlock); 1029 return error; 1030 } 1031 1032 /* 1033 * Caller must hold wd->sc_dk.dk_openlock. 1034 */ 1035 static int 1036 wdlastclose(device_t self) 1037 { 1038 struct wd_softc *wd = device_private(self); 1039 1040 wd_flushcache(wd, AT_WAIT); 1041 1042 if (! (wd->sc_flags & WDF_KLABEL)) 1043 wd->sc_flags &= ~WDF_LOADED; 1044 1045 wd->atabus->ata_delref(wd->drvp); 1046 1047 return 0; 1048 } 1049 1050 int 1051 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1052 { 1053 struct wd_softc *wd = 1054 device_lookup_private(&wd_cd, WDUNIT(dev)); 1055 int part = WDPART(dev); 1056 1057 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1058 1059 mutex_enter(&wd->sc_dk.dk_openlock); 1060 1061 switch (fmt) { 1062 case S_IFCHR: 1063 wd->sc_dk.dk_copenmask &= ~(1 << part); 1064 break; 1065 case S_IFBLK: 1066 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1067 break; 1068 } 1069 wd->sc_dk.dk_openmask = 1070 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1071 1072 if (wd->sc_dk.dk_openmask == 0) 1073 wdlastclose(wd->sc_dev); 1074 1075 mutex_exit(&wd->sc_dk.dk_openlock); 1076 return 0; 1077 } 1078 1079 void 1080 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1081 { 1082 1083 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1084 memset(lp, 0, sizeof(struct disklabel)); 1085 1086 lp->d_secsize = wd->sc_blksize; 1087 lp->d_ntracks = wd->sc_params.atap_heads; 1088 lp->d_nsectors = wd->sc_params.atap_sectors; 1089 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1090 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1091 wd->sc_params.atap_cylinders; 1092 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1093 1094 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1095 lp->d_type = DKTYPE_ST506; 1096 else 1097 lp->d_type = DKTYPE_ESDI; 1098 1099 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1100 strncpy(lp->d_packname, "fictitious", 16); 1101 if (wd->sc_capacity > UINT32_MAX) 1102 lp->d_secperunit = UINT32_MAX; 1103 else 1104 lp->d_secperunit = wd->sc_capacity; 1105 lp->d_rpm = 3600; 1106 lp->d_interleave = 1; 1107 lp->d_flags = 0; 1108 1109 lp->d_partitions[RAW_PART].p_offset = 0; 1110 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1111 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1112 lp->d_npartitions = RAW_PART + 1; 1113 1114 lp->d_magic = DISKMAGIC; 1115 lp->d_magic2 = DISKMAGIC; 1116 lp->d_checksum = dkcksum(lp); 1117 } 1118 1119 /* 1120 * Fabricate a default disk label, and try to read the correct one. 1121 */ 1122 void 1123 wdgetdisklabel(struct wd_softc *wd) 1124 { 1125 struct disklabel *lp = wd->sc_dk.dk_label; 1126 const char *errstring; 1127 int s; 1128 1129 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1130 1131 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1132 1133 wdgetdefaultlabel(wd, lp); 1134 1135 wd->sc_badsect[0] = -1; 1136 1137 if (wd->drvp->state > RESET) { 1138 s = splbio(); 1139 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 1140 splx(s); 1141 } 1142 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1143 RAW_PART), wdstrategy, lp, 1144 wd->sc_dk.dk_cpulabel); 1145 if (errstring) { 1146 /* 1147 * This probably happened because the drive's default 1148 * geometry doesn't match the DOS geometry. We 1149 * assume the DOS geometry is now in the label and try 1150 * again. XXX This is a kluge. 1151 */ 1152 if (wd->drvp->state > RESET) { 1153 s = splbio(); 1154 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 1155 splx(s); 1156 } 1157 errstring = readdisklabel(MAKEWDDEV(0, device_unit(wd->sc_dev), 1158 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1159 } 1160 if (errstring) { 1161 aprint_error_dev(wd->sc_dev, "%s\n", errstring); 1162 return; 1163 } 1164 1165 if (wd->drvp->state > RESET) { 1166 s = splbio(); 1167 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 1168 splx(s); 1169 } 1170 #ifdef HAS_BAD144_HANDLING 1171 if ((lp->d_flags & D_BADSECT) != 0) 1172 bad144intern(wd); 1173 #endif 1174 } 1175 1176 void 1177 wdperror(const struct wd_softc *wd) 1178 { 1179 static const char *const errstr0_3[] = {"address mark not found", 1180 "track 0 not found", "aborted command", "media change requested", 1181 "id not found", "media changed", "uncorrectable data error", 1182 "bad block detected"}; 1183 static const char *const errstr4_5[] = { 1184 "obsolete (address mark not found)", 1185 "no media/write protected", "aborted command", 1186 "media change requested", "id not found", "media changed", 1187 "uncorrectable data error", "interface CRC error"}; 1188 const char *const *errstr; 1189 int i; 1190 const char *sep = ""; 1191 1192 const char *devname = device_xname(wd->sc_dev); 1193 struct ata_drive_datas *drvp = wd->drvp; 1194 int errno = wd->sc_wdc_bio.r_error; 1195 1196 if (drvp->ata_vers >= 4) 1197 errstr = errstr4_5; 1198 else 1199 errstr = errstr0_3; 1200 1201 printf("%s: (", devname); 1202 1203 if (errno == 0) 1204 printf("error not notified"); 1205 1206 for (i = 0; i < 8; i++) { 1207 if (errno & (1 << i)) { 1208 printf("%s%s", sep, errstr[i]); 1209 sep = ", "; 1210 } 1211 } 1212 printf(")\n"); 1213 } 1214 1215 int 1216 wdioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 1217 { 1218 struct wd_softc *wd = 1219 device_lookup_private(&wd_cd, WDUNIT(dev)); 1220 int error, s; 1221 #ifdef __HAVE_OLD_DISKLABEL 1222 struct disklabel *newlabel = NULL; 1223 #endif 1224 1225 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1226 1227 if ((wd->sc_flags & WDF_LOADED) == 0) 1228 return EIO; 1229 1230 error = disk_ioctl(&wd->sc_dk, dev, xfer, addr, flag, l); 1231 if (error != EPASSTHROUGH) 1232 return error; 1233 1234 error = 0; 1235 switch (xfer) { 1236 #ifdef HAS_BAD144_HANDLING 1237 case DIOCSBAD: 1238 if ((flag & FWRITE) == 0) 1239 return EBADF; 1240 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1241 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1242 bad144intern(wd); 1243 return 0; 1244 #endif 1245 #ifdef WD_SOFTBADSECT 1246 case DIOCBSLIST : 1247 { 1248 uint32_t count, missing, skip; 1249 struct disk_badsecinfo dbsi; 1250 struct disk_badsectors *dbs; 1251 size_t available; 1252 uint8_t *laddr; 1253 1254 dbsi = *(struct disk_badsecinfo *)addr; 1255 missing = wd->sc_bscount; 1256 count = 0; 1257 available = dbsi.dbsi_bufsize; 1258 skip = dbsi.dbsi_skip; 1259 laddr = (uint8_t *)dbsi.dbsi_buffer; 1260 1261 /* 1262 * We start this loop with the expectation that all of the 1263 * entries will be missed and decrement this counter each 1264 * time we either skip over one (already copied out) or 1265 * we actually copy it back to user space. The structs 1266 * holding the bad sector information are copied directly 1267 * back to user space whilst the summary is returned via 1268 * the struct passed in via the ioctl. 1269 */ 1270 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1271 if (skip > 0) { 1272 missing--; 1273 skip--; 1274 continue; 1275 } 1276 if (available < sizeof(*dbs)) 1277 break; 1278 available -= sizeof(*dbs); 1279 copyout(dbs, laddr, sizeof(*dbs)); 1280 laddr += sizeof(*dbs); 1281 missing--; 1282 count++; 1283 } 1284 dbsi.dbsi_left = missing; 1285 dbsi.dbsi_copied = count; 1286 *(struct disk_badsecinfo *)addr = dbsi; 1287 return 0; 1288 } 1289 1290 case DIOCBSFLUSH : 1291 /* Clean out the bad sector list */ 1292 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1293 void *head = SLIST_FIRST(&wd->sc_bslist); 1294 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1295 free(head, M_TEMP); 1296 } 1297 wd->sc_bscount = 0; 1298 return 0; 1299 #endif 1300 1301 case DIOCWDINFO: 1302 case DIOCSDINFO: 1303 #ifdef __HAVE_OLD_DISKLABEL 1304 case ODIOCWDINFO: 1305 case ODIOCSDINFO: 1306 #endif 1307 { 1308 struct disklabel *lp; 1309 1310 if ((flag & FWRITE) == 0) 1311 return EBADF; 1312 1313 #ifdef __HAVE_OLD_DISKLABEL 1314 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1315 newlabel = malloc(sizeof *newlabel, M_TEMP, 1316 M_WAITOK | M_ZERO); 1317 if (newlabel == NULL) 1318 return EIO; 1319 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1320 lp = newlabel; 1321 } else 1322 #endif 1323 lp = (struct disklabel *)addr; 1324 1325 mutex_enter(&wd->sc_dk.dk_openlock); 1326 wd->sc_flags |= WDF_LABELLING; 1327 1328 error = setdisklabel(wd->sc_dk.dk_label, 1329 lp, /*wd->sc_dk.dk_openmask : */0, 1330 wd->sc_dk.dk_cpulabel); 1331 if (error == 0) { 1332 if (wd->drvp->state > RESET) { 1333 s = splbio(); 1334 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 1335 splx(s); 1336 } 1337 if (xfer == DIOCWDINFO 1338 #ifdef __HAVE_OLD_DISKLABEL 1339 || xfer == ODIOCWDINFO 1340 #endif 1341 ) 1342 error = writedisklabel(WDLABELDEV(dev), 1343 wdstrategy, wd->sc_dk.dk_label, 1344 wd->sc_dk.dk_cpulabel); 1345 } 1346 1347 wd->sc_flags &= ~WDF_LABELLING; 1348 mutex_exit(&wd->sc_dk.dk_openlock); 1349 #ifdef __HAVE_OLD_DISKLABEL 1350 if (newlabel != NULL) 1351 free(newlabel, M_TEMP); 1352 #endif 1353 return error; 1354 } 1355 1356 case DIOCKLABEL: 1357 if (*(int *)addr) 1358 wd->sc_flags |= WDF_KLABEL; 1359 else 1360 wd->sc_flags &= ~WDF_KLABEL; 1361 return 0; 1362 1363 case DIOCWLABEL: 1364 if ((flag & FWRITE) == 0) 1365 return EBADF; 1366 if (*(int *)addr) 1367 wd->sc_flags |= WDF_WLABEL; 1368 else 1369 wd->sc_flags &= ~WDF_WLABEL; 1370 return 0; 1371 1372 case DIOCGDEFLABEL: 1373 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1374 return 0; 1375 #ifdef __HAVE_OLD_DISKLABEL 1376 case ODIOCGDEFLABEL: 1377 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1378 if (newlabel == NULL) 1379 return EIO; 1380 wdgetdefaultlabel(wd, newlabel); 1381 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1382 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1383 else 1384 error = ENOTTY; 1385 free(newlabel, M_TEMP); 1386 return error; 1387 #endif 1388 1389 #ifdef notyet 1390 case DIOCWFORMAT: 1391 if ((flag & FWRITE) == 0) 1392 return EBADF; 1393 { 1394 register struct format_op *fop; 1395 struct iovec aiov; 1396 struct uio auio; 1397 1398 fop = (struct format_op *)addr; 1399 aiov.iov_base = fop->df_buf; 1400 aiov.iov_len = fop->df_count; 1401 auio.uio_iov = &aiov; 1402 auio.uio_iovcnt = 1; 1403 auio.uio_resid = fop->df_count; 1404 auio.uio_offset = 1405 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1406 auio.uio_vmspace = l->l_proc->p_vmspace; 1407 error = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1408 &auio); 1409 fop->df_count -= auio.uio_resid; 1410 fop->df_reg[0] = wdc->sc_status; 1411 fop->df_reg[1] = wdc->sc_error; 1412 return error; 1413 } 1414 #endif 1415 case DIOCGCACHE: 1416 return wd_getcache(wd, (int *)addr); 1417 1418 case DIOCSCACHE: 1419 return wd_setcache(wd, *(int *)addr); 1420 1421 case DIOCCACHESYNC: 1422 return wd_flushcache(wd, AT_WAIT); 1423 1424 case ATAIOCCOMMAND: 1425 /* 1426 * Make sure this command is (relatively) safe first 1427 */ 1428 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1429 (flag & FWRITE) == 0) 1430 return (EBADF); 1431 { 1432 struct wd_ioctl *wi; 1433 atareq_t *atareq = (atareq_t *) addr; 1434 int error1; 1435 1436 wi = wi_get(); 1437 wi->wi_softc = wd; 1438 wi->wi_atareq = *atareq; 1439 1440 if (atareq->datalen && atareq->flags & 1441 (ATACMD_READ | ATACMD_WRITE)) { 1442 void *tbuf; 1443 if (atareq->datalen < DEV_BSIZE 1444 && atareq->command == WDCC_IDENTIFY) { 1445 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1446 wi->wi_iov.iov_base = tbuf; 1447 wi->wi_iov.iov_len = DEV_BSIZE; 1448 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1449 } else { 1450 tbuf = NULL; 1451 wi->wi_iov.iov_base = atareq->databuf; 1452 wi->wi_iov.iov_len = atareq->datalen; 1453 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1454 } 1455 wi->wi_uio.uio_iov = &wi->wi_iov; 1456 wi->wi_uio.uio_iovcnt = 1; 1457 wi->wi_uio.uio_resid = atareq->datalen; 1458 wi->wi_uio.uio_offset = 0; 1459 wi->wi_uio.uio_rw = 1460 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1461 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1462 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1463 wdminphys, &wi->wi_uio); 1464 if (tbuf != NULL && error1 == 0) { 1465 error1 = copyout(tbuf, atareq->databuf, 1466 atareq->datalen); 1467 free(tbuf, M_TEMP); 1468 } 1469 } else { 1470 /* No need to call physio if we don't have any 1471 user data */ 1472 wi->wi_bp.b_flags = 0; 1473 wi->wi_bp.b_data = 0; 1474 wi->wi_bp.b_bcount = 0; 1475 wi->wi_bp.b_dev = 0; 1476 wi->wi_bp.b_proc = l->l_proc; 1477 wdioctlstrategy(&wi->wi_bp); 1478 error1 = wi->wi_bp.b_error; 1479 } 1480 *atareq = wi->wi_atareq; 1481 wi_free(wi); 1482 return(error1); 1483 } 1484 1485 case DIOCGSTRATEGY: 1486 { 1487 struct disk_strategy *dks = (void *)addr; 1488 1489 s = splbio(); 1490 strlcpy(dks->dks_name, bufq_getstrategyname(wd->sc_q), 1491 sizeof(dks->dks_name)); 1492 splx(s); 1493 dks->dks_paramlen = 0; 1494 1495 return 0; 1496 } 1497 1498 case DIOCSSTRATEGY: 1499 { 1500 struct disk_strategy *dks = (void *)addr; 1501 struct bufq_state *new; 1502 struct bufq_state *old; 1503 1504 if ((flag & FWRITE) == 0) { 1505 return EBADF; 1506 } 1507 if (dks->dks_param != NULL) { 1508 return EINVAL; 1509 } 1510 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1511 error = bufq_alloc(&new, dks->dks_name, 1512 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1513 if (error) { 1514 return error; 1515 } 1516 s = splbio(); 1517 old = wd->sc_q; 1518 bufq_move(new, old); 1519 wd->sc_q = new; 1520 splx(s); 1521 bufq_free(old); 1522 1523 return 0; 1524 } 1525 1526 default: 1527 return ENOTTY; 1528 } 1529 1530 #ifdef DIAGNOSTIC 1531 panic("wdioctl: impossible"); 1532 #endif 1533 } 1534 1535 static int 1536 wddiscard(dev_t dev, off_t pos, off_t len) 1537 { 1538 struct wd_softc *wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1539 daddr_t bno; 1540 long size, done; 1541 long maxatonce, amount; 1542 int result; 1543 1544 if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA7) 1545 || !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM)) { 1546 /* not supported; ignore request */ 1547 ATADEBUG_PRINT(("wddiscard (unsupported)\n"), DEBUG_FUNCS); 1548 return 0; 1549 } 1550 maxatonce = 0xffff; /*wd->sc_params.max_dsm_blocks*/ 1551 1552 ATADEBUG_PRINT(("wddiscard\n"), DEBUG_FUNCS); 1553 1554 if ((wd->sc_flags & WDF_LOADED) == 0) 1555 return EIO; 1556 1557 /* round the start up and the end down */ 1558 bno = (pos + wd->sc_blksize - 1) / wd->sc_blksize; 1559 size = ((pos + len) / wd->sc_blksize) - bno; 1560 1561 done = 0; 1562 while (done < size) { 1563 amount = size - done; 1564 if (amount > maxatonce) { 1565 amount = maxatonce; 1566 } 1567 result = wd_trim(wd, WDPART(dev), bno + done, amount); 1568 if (result) { 1569 return result; 1570 } 1571 done += amount; 1572 } 1573 return 0; 1574 } 1575 1576 #ifdef B_FORMAT 1577 int 1578 wdformat(struct buf *bp) 1579 { 1580 1581 bp->b_flags |= B_FORMAT; 1582 return wdstrategy(bp); 1583 } 1584 #endif 1585 1586 int 1587 wdsize(dev_t dev) 1588 { 1589 struct wd_softc *wd; 1590 int part, omask; 1591 int size; 1592 1593 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1594 1595 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1596 if (wd == NULL) 1597 return (-1); 1598 1599 part = WDPART(dev); 1600 omask = wd->sc_dk.dk_openmask & (1 << part); 1601 1602 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1603 return (-1); 1604 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1605 size = -1; 1606 else 1607 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1608 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1609 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1610 return (-1); 1611 return (size); 1612 } 1613 1614 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1615 static int wddoingadump = 0; 1616 static int wddumprecalibrated = 0; 1617 1618 /* 1619 * Dump core after a system crash. 1620 */ 1621 int 1622 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1623 { 1624 struct wd_softc *wd; /* disk unit to do the I/O */ 1625 struct disklabel *lp; /* disk's disklabel */ 1626 int part, err; 1627 int nblks; /* total number of sectors left to write */ 1628 1629 /* Check if recursive dump; if so, punt. */ 1630 if (wddoingadump) 1631 return EFAULT; 1632 wddoingadump = 1; 1633 1634 wd = device_lookup_private(&wd_cd, WDUNIT(dev)); 1635 if (wd == NULL) 1636 return (ENXIO); 1637 1638 part = WDPART(dev); 1639 1640 /* Convert to disk sectors. Request must be a multiple of size. */ 1641 lp = wd->sc_dk.dk_label; 1642 if ((size % lp->d_secsize) != 0) 1643 return EFAULT; 1644 nblks = size / lp->d_secsize; 1645 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1646 1647 /* Check transfer bounds against partition size. */ 1648 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1649 return EINVAL; 1650 1651 /* Offset block number to start of partition. */ 1652 blkno += lp->d_partitions[part].p_offset; 1653 1654 /* Recalibrate, if first dump transfer. */ 1655 if (wddumprecalibrated == 0) { 1656 wddumprecalibrated = 1; 1657 (*wd->atabus->ata_reset_drive)(wd->drvp, 1658 AT_POLL | AT_RST_EMERG, NULL); 1659 wd->drvp->state = RESET; 1660 } 1661 1662 wd->sc_bp = NULL; 1663 wd->sc_wdc_bio.blkno = blkno; 1664 wd->sc_wdc_bio.flags = ATA_POLL; 1665 if (wd->sc_flags & WDF_LBA48 && 1666 (wd->sc_wdc_bio.blkno + nblks) > wd->sc_capacity28) 1667 wd->sc_wdc_bio.flags |= ATA_LBA48; 1668 if (wd->sc_flags & WDF_LBA) 1669 wd->sc_wdc_bio.flags |= ATA_LBA; 1670 wd->sc_wdc_bio.bcount = nblks * lp->d_secsize; 1671 wd->sc_wdc_bio.databuf = va; 1672 #ifndef WD_DUMP_NOT_TRUSTED 1673 switch (err = wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1674 case ATACMD_TRY_AGAIN: 1675 panic("wddump: try again"); 1676 break; 1677 case ATACMD_QUEUED: 1678 panic("wddump: polled command has been queued"); 1679 break; 1680 case ATACMD_COMPLETE: 1681 break; 1682 default: 1683 panic("wddump: unknown atacmd code %d", err); 1684 } 1685 switch(err = wd->sc_wdc_bio.error) { 1686 case TIMEOUT: 1687 printf("wddump: device timed out"); 1688 err = EIO; 1689 break; 1690 case ERR_DF: 1691 printf("wddump: drive fault"); 1692 err = EIO; 1693 break; 1694 case ERR_DMA: 1695 printf("wddump: DMA error"); 1696 err = EIO; 1697 break; 1698 case ERROR: 1699 printf("wddump: "); 1700 wdperror(wd); 1701 err = EIO; 1702 break; 1703 case NOERROR: 1704 err = 0; 1705 break; 1706 default: 1707 panic("wddump: unknown error type %d", err); 1708 } 1709 if (err != 0) { 1710 printf("\n"); 1711 return err; 1712 } 1713 #else /* WD_DUMP_NOT_TRUSTED */ 1714 /* Let's just talk about this first... */ 1715 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1716 unit, va, cylin, head, sector); 1717 delay(500 * 1000); /* half a second */ 1718 #endif 1719 1720 wddoingadump = 0; 1721 return 0; 1722 } 1723 1724 #ifdef HAS_BAD144_HANDLING 1725 /* 1726 * Internalize the bad sector table. 1727 */ 1728 void 1729 bad144intern(struct wd_softc *wd) 1730 { 1731 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1732 struct disklabel *lp = wd->sc_dk.dk_label; 1733 int i = 0; 1734 1735 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1736 1737 for (; i < NBT_BAD; i++) { 1738 if (bt->bt_bad[i].bt_cyl == 0xffff) 1739 break; 1740 wd->sc_badsect[i] = 1741 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1742 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1743 (bt->bt_bad[i].bt_trksec & 0xff); 1744 } 1745 for (; i < NBT_BAD+1; i++) 1746 wd->sc_badsect[i] = -1; 1747 } 1748 #endif 1749 1750 static void 1751 wd_params_to_properties(struct wd_softc *wd) 1752 { 1753 struct disk_geom *dg = &wd->sc_dk.dk_geom; 1754 1755 memset(dg, 0, sizeof(*dg)); 1756 1757 dg->dg_secperunit = wd->sc_capacity; 1758 dg->dg_secsize = wd->sc_blksize; 1759 dg->dg_nsectors = wd->sc_params.atap_sectors; 1760 dg->dg_ntracks = wd->sc_params.atap_heads; 1761 if ((wd->sc_flags & WDF_LBA) == 0) 1762 dg->dg_ncylinders = wd->sc_params.atap_cylinders; 1763 1764 /* XXX Should have a case for ATA here, too. */ 1765 const char *cp = strcmp(wd->sc_params.atap_model, "ST506") ? 1766 "ST506" : "ESDI"; 1767 1768 disk_set_info(wd->sc_dev, &wd->sc_dk, cp); 1769 } 1770 1771 int 1772 wd_get_params(struct wd_softc *wd, uint8_t flags, struct ataparams *params) 1773 { 1774 1775 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1776 case CMD_AGAIN: 1777 return 1; 1778 case CMD_ERR: 1779 if (wd->drvp->drive_type != ATA_DRIVET_OLD) 1780 return 1; 1781 /* 1782 * We `know' there's a drive here; just assume it's old. 1783 * This geometry is only used to read the MBR and print a 1784 * (false) attach message. 1785 */ 1786 strncpy(params->atap_model, "ST506", 1787 sizeof params->atap_model); 1788 params->atap_config = ATA_CFG_FIXED; 1789 params->atap_cylinders = 1024; 1790 params->atap_heads = 8; 1791 params->atap_sectors = 17; 1792 params->atap_multi = 1; 1793 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1794 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1795 /* FALLTHROUGH */ 1796 case CMD_OK: 1797 return 0; 1798 default: 1799 panic("wd_get_params: bad return code from ata_get_params"); 1800 /* NOTREACHED */ 1801 } 1802 } 1803 1804 int 1805 wd_getcache(struct wd_softc *wd, int *bitsp) 1806 { 1807 struct ataparams params; 1808 1809 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1810 return EIO; 1811 if (params.atap_cmd_set1 == 0x0000 || 1812 params.atap_cmd_set1 == 0xffff || 1813 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1814 *bitsp = 0; 1815 return 0; 1816 } 1817 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1818 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1819 *bitsp |= DKCACHE_WRITE; 1820 1821 return 0; 1822 } 1823 1824 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1825 1826 int 1827 wd_setcache(struct wd_softc *wd, int bits) 1828 { 1829 struct ataparams params; 1830 struct ata_command ata_c; 1831 1832 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1833 return EIO; 1834 1835 if (params.atap_cmd_set1 == 0x0000 || 1836 params.atap_cmd_set1 == 0xffff || 1837 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1838 return EOPNOTSUPP; 1839 1840 if ((bits & DKCACHE_READ) == 0 || 1841 (bits & DKCACHE_SAVE) != 0) 1842 return EOPNOTSUPP; 1843 1844 memset(&ata_c, 0, sizeof(struct ata_command)); 1845 ata_c.r_command = SET_FEATURES; 1846 ata_c.r_st_bmask = 0; 1847 ata_c.r_st_pmask = 0; 1848 ata_c.timeout = 30000; /* 30s timeout */ 1849 ata_c.flags = AT_WAIT; 1850 if (bits & DKCACHE_WRITE) 1851 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1852 else 1853 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1854 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1855 aprint_error_dev(wd->sc_dev, 1856 "wd_setcache command not complete\n"); 1857 return EIO; 1858 } 1859 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1860 char sbuf[sizeof(at_errbits) + 64]; 1861 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1862 aprint_error_dev(wd->sc_dev, "wd_setcache: status=%s\n", sbuf); 1863 return EIO; 1864 } 1865 return 0; 1866 } 1867 1868 static int 1869 wd_standby(struct wd_softc *wd, int flags) 1870 { 1871 struct ata_command ata_c; 1872 1873 memset(&ata_c, 0, sizeof(struct ata_command)); 1874 ata_c.r_command = WDCC_STANDBY_IMMED; 1875 ata_c.r_st_bmask = WDCS_DRDY; 1876 ata_c.r_st_pmask = WDCS_DRDY; 1877 ata_c.flags = flags; 1878 ata_c.timeout = 30000; /* 30s timeout */ 1879 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1880 aprint_error_dev(wd->sc_dev, 1881 "standby immediate command didn't complete\n"); 1882 return EIO; 1883 } 1884 if (ata_c.flags & AT_ERROR) { 1885 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1886 return ENODEV; 1887 } 1888 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1889 char sbuf[sizeof(at_errbits) + 64]; 1890 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1891 aprint_error_dev(wd->sc_dev, "wd_standby: status=%s\n", sbuf); 1892 return EIO; 1893 } 1894 return 0; 1895 } 1896 1897 int 1898 wd_flushcache(struct wd_softc *wd, int flags) 1899 { 1900 struct ata_command ata_c; 1901 1902 /* 1903 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1904 * only ATA-2 and still support it. 1905 */ 1906 if (wd->drvp->ata_vers < 4 && 1907 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1908 wd->sc_params.atap_cmd_set2 == 0xffff)) 1909 return ENODEV; 1910 memset(&ata_c, 0, sizeof(struct ata_command)); 1911 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1912 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) { 1913 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1914 flags |= AT_LBA48; 1915 } else 1916 ata_c.r_command = WDCC_FLUSHCACHE; 1917 ata_c.r_st_bmask = WDCS_DRDY; 1918 ata_c.r_st_pmask = WDCS_DRDY; 1919 ata_c.flags = flags | AT_READREG; 1920 ata_c.timeout = 300000; /* 5m timeout */ 1921 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1922 aprint_error_dev(wd->sc_dev, 1923 "flush cache command didn't complete\n"); 1924 return EIO; 1925 } 1926 if (ata_c.flags & AT_ERROR) { 1927 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1928 return ENODEV; 1929 } 1930 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1931 char sbuf[sizeof(at_errbits) + 64]; 1932 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1933 aprint_error_dev(wd->sc_dev, "wd_flushcache: status=%s\n", 1934 sbuf); 1935 return EIO; 1936 } 1937 return 0; 1938 } 1939 1940 int 1941 wd_trim(struct wd_softc *wd, int part, daddr_t bno, long size) 1942 { 1943 struct ata_command ata_c; 1944 unsigned char *req; 1945 1946 if (part != RAW_PART) 1947 bno += wd->sc_dk.dk_label->d_partitions[part].p_offset;; 1948 1949 req = kmem_zalloc(512, KM_SLEEP); 1950 req[0] = bno & 0xff; 1951 req[1] = (bno >> 8) & 0xff; 1952 req[2] = (bno >> 16) & 0xff; 1953 req[3] = (bno >> 24) & 0xff; 1954 req[4] = (bno >> 32) & 0xff; 1955 req[5] = (bno >> 40) & 0xff; 1956 req[6] = size & 0xff; 1957 req[7] = (size >> 8) & 0xff; 1958 1959 memset(&ata_c, 0, sizeof(struct ata_command)); 1960 ata_c.r_command = ATA_DATA_SET_MANAGEMENT; 1961 ata_c.r_count = 1; 1962 ata_c.r_features = ATA_SUPPORT_DSM_TRIM; 1963 ata_c.r_st_bmask = WDCS_DRDY; 1964 ata_c.r_st_pmask = WDCS_DRDY; 1965 ata_c.timeout = 30000; /* 30s timeout */ 1966 ata_c.data = req; 1967 ata_c.bcount = 512; 1968 ata_c.flags |= AT_WRITE | AT_WAIT; 1969 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1970 aprint_error_dev(wd->sc_dev, 1971 "trim command didn't complete\n"); 1972 kmem_free(req, 512); 1973 return EIO; 1974 } 1975 kmem_free(req, 512); 1976 if (ata_c.flags & AT_ERROR) { 1977 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1978 return ENODEV; 1979 } 1980 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1981 char sbuf[sizeof(at_errbits) + 64]; 1982 snprintb(sbuf, sizeof(sbuf), at_errbits, ata_c.flags); 1983 aprint_error_dev(wd->sc_dev, "wd_trim: status=%s\n", 1984 sbuf); 1985 return EIO; 1986 } 1987 return 0; 1988 } 1989 1990 bool 1991 wd_shutdown(device_t dev, int how) 1992 { 1993 struct wd_softc *wd = device_private(dev); 1994 1995 /* the adapter needs to be enabled */ 1996 if (wd->atabus->ata_addref(wd->drvp)) 1997 return true; /* no need to complain */ 1998 1999 wd_flushcache(wd, AT_POLL); 2000 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 2001 wd_standby(wd, AT_POLL); 2002 return true; 2003 } 2004 2005 /* 2006 * Allocate space for a ioctl queue structure. Mostly taken from 2007 * scsipi_ioctl.c 2008 */ 2009 struct wd_ioctl * 2010 wi_get(void) 2011 { 2012 struct wd_ioctl *wi; 2013 int s; 2014 2015 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 2016 buf_init(&wi->wi_bp); 2017 s = splbio(); 2018 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 2019 splx(s); 2020 return (wi); 2021 } 2022 2023 /* 2024 * Free an ioctl structure and remove it from our list 2025 */ 2026 2027 void 2028 wi_free(struct wd_ioctl *wi) 2029 { 2030 int s; 2031 2032 s = splbio(); 2033 LIST_REMOVE(wi, wi_list); 2034 splx(s); 2035 buf_destroy(&wi->wi_bp); 2036 free(wi, M_TEMP); 2037 } 2038 2039 /* 2040 * Find a wd_ioctl structure based on the struct buf. 2041 */ 2042 2043 struct wd_ioctl * 2044 wi_find(struct buf *bp) 2045 { 2046 struct wd_ioctl *wi; 2047 int s; 2048 2049 s = splbio(); 2050 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 2051 if (bp == &wi->wi_bp) 2052 break; 2053 splx(s); 2054 return (wi); 2055 } 2056 2057 static uint 2058 wi_sector_size(const struct wd_ioctl * const wi) 2059 { 2060 switch (wi->wi_atareq.command) { 2061 case WDCC_READ: 2062 case WDCC_WRITE: 2063 case WDCC_READMULTI: 2064 case WDCC_WRITEMULTI: 2065 case WDCC_READDMA: 2066 case WDCC_WRITEDMA: 2067 case WDCC_READ_EXT: 2068 case WDCC_WRITE_EXT: 2069 case WDCC_READMULTI_EXT: 2070 case WDCC_WRITEMULTI_EXT: 2071 case WDCC_READDMA_EXT: 2072 case WDCC_WRITEDMA_EXT: 2073 case WDCC_READ_FPDMA_QUEUED: 2074 case WDCC_WRITE_FPDMA_QUEUED: 2075 return wi->wi_softc->sc_blksize; 2076 default: 2077 return 512; 2078 } 2079 } 2080 2081 /* 2082 * Ioctl pseudo strategy routine 2083 * 2084 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2085 * happens here is: 2086 * 2087 * - wdioctl() queues a wd_ioctl structure. 2088 * 2089 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2090 * user space I/O is required. If physio() is called, physio() eventually 2091 * calls wdioctlstrategy(). 2092 * 2093 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2094 * to perform the actual command 2095 * 2096 * The reason for the use of the pseudo strategy routine is because 2097 * when doing I/O to/from user space, physio _really_ wants to be in 2098 * the loop. We could put the entire buffer into the ioctl request 2099 * structure, but that won't scale if we want to do things like download 2100 * microcode. 2101 */ 2102 2103 void 2104 wdioctlstrategy(struct buf *bp) 2105 { 2106 struct wd_ioctl *wi; 2107 struct ata_command ata_c; 2108 int error = 0; 2109 2110 wi = wi_find(bp); 2111 if (wi == NULL) { 2112 printf("wdioctlstrategy: " 2113 "No matching ioctl request found in queue\n"); 2114 error = EINVAL; 2115 goto bad; 2116 } 2117 2118 memset(&ata_c, 0, sizeof(ata_c)); 2119 2120 /* 2121 * Abort if physio broke up the transfer 2122 */ 2123 2124 if (bp->b_bcount != wi->wi_atareq.datalen) { 2125 printf("physio split wd ioctl request... cannot proceed\n"); 2126 error = EIO; 2127 goto bad; 2128 } 2129 2130 /* 2131 * Abort if we didn't get a buffer size that was a multiple of 2132 * our sector size (or overflows CHS/LBA28 sector count) 2133 */ 2134 2135 if ((bp->b_bcount % wi_sector_size(wi)) != 0 || 2136 (bp->b_bcount / wi_sector_size(wi)) >= 2137 (1 << NBBY)) { 2138 error = EINVAL; 2139 goto bad; 2140 } 2141 2142 /* 2143 * Make sure a timeout was supplied in the ioctl request 2144 */ 2145 2146 if (wi->wi_atareq.timeout == 0) { 2147 error = EINVAL; 2148 goto bad; 2149 } 2150 2151 if (wi->wi_atareq.flags & ATACMD_READ) 2152 ata_c.flags |= AT_READ; 2153 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2154 ata_c.flags |= AT_WRITE; 2155 2156 if (wi->wi_atareq.flags & ATACMD_READREG) 2157 ata_c.flags |= AT_READREG; 2158 2159 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 2160 ata_c.flags |= AT_LBA; 2161 2162 ata_c.flags |= AT_WAIT; 2163 2164 ata_c.timeout = wi->wi_atareq.timeout; 2165 ata_c.r_command = wi->wi_atareq.command; 2166 ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2167 (wi->wi_atareq.cylinder << 8) | 2168 wi->wi_atareq.sec_num; 2169 ata_c.r_count = wi->wi_atareq.sec_count; 2170 ata_c.r_features = wi->wi_atareq.features; 2171 ata_c.r_st_bmask = WDCS_DRDY; 2172 ata_c.r_st_pmask = WDCS_DRDY; 2173 ata_c.data = wi->wi_bp.b_data; 2174 ata_c.bcount = wi->wi_bp.b_bcount; 2175 2176 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 2177 != ATACMD_COMPLETE) { 2178 wi->wi_atareq.retsts = ATACMD_ERROR; 2179 goto bad; 2180 } 2181 2182 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2183 if (ata_c.flags & AT_ERROR) { 2184 wi->wi_atareq.retsts = ATACMD_ERROR; 2185 wi->wi_atareq.error = ata_c.r_error; 2186 } else if (ata_c.flags & AT_DF) 2187 wi->wi_atareq.retsts = ATACMD_DF; 2188 else 2189 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2190 } else { 2191 wi->wi_atareq.retsts = ATACMD_OK; 2192 if (wi->wi_atareq.flags & ATACMD_READREG) { 2193 wi->wi_atareq.command = ata_c.r_status; 2194 wi->wi_atareq.features = ata_c.r_error; 2195 wi->wi_atareq.sec_count = ata_c.r_count; 2196 wi->wi_atareq.sec_num = ata_c.r_lba & 0xff; 2197 wi->wi_atareq.head = (ata_c.r_device & 0xf0) | 2198 ((ata_c.r_lba >> 24) & 0x0f); 2199 wi->wi_atareq.cylinder = (ata_c.r_lba >> 8) & 0xffff; 2200 wi->wi_atareq.error = ata_c.r_error; 2201 } 2202 } 2203 2204 bp->b_error = 0; 2205 biodone(bp); 2206 return; 2207 bad: 2208 bp->b_error = error; 2209 bp->b_resid = bp->b_bcount; 2210 biodone(bp); 2211 } 2212
Indexes created Mon Sep 29 18:09:42 GMT 2025