wd.c revision 1.436
1 /* $NetBSD: wd.c,v 1.436 2017/11/07 04:09:08 mlelstv 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 1.436 2017/11/07 04:09:08 mlelstv Exp $"); 58 59 #include "opt_ata.h" 60 #include "opt_wd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/conf.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/syslog.h> 77 #include <sys/proc.h> 78 #include <sys/reboot.h> 79 #include <sys/vnode.h> 80 #include <sys/rndsource.h> 81 82 #include <sys/intr.h> 83 #include <sys/bus.h> 84 85 #include <dev/ata/atareg.h> 86 #include <dev/ata/atavar.h> 87 #include <dev/ata/wdvar.h> 88 #include <dev/ic/wdcreg.h> 89 #include <sys/ataio.h> 90 #include "locators.h" 91 92 #include <prop/proplib.h> 93 94 #define WDIORETRIES_SINGLE 4 /* number of retries for single-sector */ 95 #define WDIORETRIES 5 /* number of retries before giving up */ 96 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 97 98 #define WDUNIT(dev) DISKUNIT(dev) 99 #define WDPART(dev) DISKPART(dev) 100 #define WDMINOR(unit, part) DISKMINOR(unit, part) 101 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 102 103 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 104 105 #define DEBUG_FUNCS 0x08 106 #define DEBUG_PROBE 0x10 107 #define DEBUG_DETACH 0x20 108 #define DEBUG_XFERS 0x40 109 #ifdef ATADEBUG 110 #ifndef ATADEBUG_WD_MASK 111 #define ATADEBUG_WD_MASK 0x0 112 #endif 113 int wdcdebug_wd_mask = ATADEBUG_WD_MASK; 114 #define ATADEBUG_PRINT(args, level) \ 115 if (wdcdebug_wd_mask & (level)) \ 116 printf args 117 #else 118 #define ATADEBUG_PRINT(args, level) 119 #endif 120 121 static int wdprobe(device_t, cfdata_t, void *); 122 static void wdattach(device_t, device_t, void *); 123 static int wddetach(device_t, int); 124 static void wdperror(const struct wd_softc *, struct ata_xfer *); 125 126 static void wdminphys(struct buf *); 127 128 static int wd_firstopen(device_t, dev_t, int, int); 129 static int wd_lastclose(device_t); 130 static bool wd_suspend(device_t, const pmf_qual_t *); 131 static int wd_standby(struct wd_softc *, int); 132 133 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 134 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 135 136 extern struct cfdriver wd_cd; 137 138 static dev_type_open(wdopen); 139 static dev_type_close(wdclose); 140 static dev_type_read(wdread); 141 static dev_type_write(wdwrite); 142 static dev_type_ioctl(wdioctl); 143 static dev_type_strategy(wdstrategy); 144 static dev_type_dump(wddump); 145 static dev_type_size(wdsize); 146 static dev_type_discard(wddiscard); 147 148 const struct bdevsw wd_bdevsw = { 149 .d_open = wdopen, 150 .d_close = wdclose, 151 .d_strategy = wdstrategy, 152 .d_ioctl = wdioctl, 153 .d_dump = wddump, 154 .d_psize = wdsize, 155 .d_discard = wddiscard, 156 .d_flag = D_DISK 157 }; 158 159 const struct cdevsw wd_cdevsw = { 160 .d_open = wdopen, 161 .d_close = wdclose, 162 .d_read = wdread, 163 .d_write = wdwrite, 164 .d_ioctl = wdioctl, 165 .d_stop = nostop, 166 .d_tty = notty, 167 .d_poll = nopoll, 168 .d_mmap = nommap, 169 .d_kqfilter = nokqfilter, 170 .d_discard = wddiscard, 171 .d_flag = D_DISK 172 }; 173 174 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 175 static int wddoingadump = 0; 176 static int wddumprecalibrated = 0; 177 178 /* 179 * Glue necessary to hook WDCIOCCOMMAND into physio 180 */ 181 182 struct wd_ioctl { 183 LIST_ENTRY(wd_ioctl) wi_list; 184 struct buf wi_bp; 185 struct uio wi_uio; 186 struct iovec wi_iov; 187 atareq_t wi_atareq; 188 struct wd_softc *wi_softc; 189 }; 190 191 static struct wd_ioctl *wi_find(struct buf *); 192 static void wi_free(struct wd_ioctl *); 193 static struct wd_ioctl *wi_get(struct wd_softc *); 194 static void wdioctlstrategy(struct buf *); 195 196 static void wdstart(device_t); 197 static void wdstart1(struct wd_softc *, struct buf *, struct ata_xfer *); 198 static int wd_diskstart(device_t, struct buf *); 199 static int wd_dumpblocks(device_t, void *, daddr_t, int); 200 static void wd_iosize(device_t, int *); 201 static int wd_discard(device_t, off_t, off_t); 202 static void wdbiorestart(void *); 203 static void wddone(device_t, struct ata_xfer *); 204 static int wd_get_params(struct wd_softc *, uint8_t, struct ataparams *); 205 static void wd_set_geometry(struct wd_softc *); 206 static int wd_flushcache(struct wd_softc *, int, bool); 207 static int wd_trim(struct wd_softc *, daddr_t, long); 208 static bool wd_shutdown(device_t, int); 209 210 static int wd_getcache(struct wd_softc *, int *); 211 static int wd_setcache(struct wd_softc *, int); 212 213 static void wd_sysctl_attach(struct wd_softc *); 214 static void wd_sysctl_detach(struct wd_softc *); 215 216 struct dkdriver wddkdriver = { 217 .d_open = wdopen, 218 .d_close = wdclose, 219 .d_strategy = wdstrategy, 220 .d_minphys = wdminphys, 221 .d_diskstart = wd_diskstart, 222 .d_dumpblocks = wd_dumpblocks, 223 .d_iosize = wd_iosize, 224 .d_firstopen = wd_firstopen, 225 .d_lastclose = wd_lastclose, 226 .d_discard = wd_discard 227 }; 228 229 #ifdef HAS_BAD144_HANDLING 230 static void bad144intern(struct wd_softc *); 231 #endif 232 233 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 234 235 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 236 237 /* 238 * Quirk table for IDE drives. Put more-specific matches first, since 239 * a simple globing routine is used for matching. 240 */ 241 static const struct wd_quirk { 242 const char *wdq_match; /* inquiry pattern to match */ 243 int wdq_quirks; /* drive quirks */ 244 } wd_quirk_table[] = { 245 /* 246 * Some Seagate S-ATA drives have a PHY which can get confused 247 * with the way data is packetized by some S-ATA controllers. 248 * 249 * The work-around is to split in two any write transfer whose 250 * sector count % 15 == 1 (assuming 512 byte sectors). 251 * 252 * XXX This is an incomplete list. There are at least a couple 253 * XXX more model numbers. If you have trouble with such transfers 254 * XXX (8K is the most common) on Seagate S-ATA drives, please 255 * XXX notify thorpej (at) NetBSD.org. 256 * 257 * The ST360015AS has not yet been confirmed to have this 258 * issue, however, it is the only other drive in the 259 * Seagate Barracuda Serial ATA V family. 260 * 261 */ 262 { "ST3120023AS", 263 WD_QUIRK_SPLIT_MOD15_WRITE }, 264 { "ST380023AS", 265 WD_QUIRK_SPLIT_MOD15_WRITE }, 266 { "ST360015AS", 267 WD_QUIRK_SPLIT_MOD15_WRITE }, 268 { NULL, 269 0 } 270 }; 271 272 static const struct wd_quirk * 273 wd_lookup_quirks(const char *name) 274 { 275 const struct wd_quirk *wdq; 276 const char *estr; 277 278 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 279 /* 280 * We only want exact matches (which include matches 281 * against globbing characters). 282 */ 283 if (pmatch(name, wdq->wdq_match, &estr) == 2) 284 return (wdq); 285 } 286 return (NULL); 287 } 288 289 static int 290 wdprobe(device_t parent, cfdata_t match, void *aux) 291 { 292 struct ata_device *adev = aux; 293 294 if (adev == NULL) 295 return 0; 296 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 297 return 0; 298 299 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 300 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 301 return 0; 302 return 1; 303 } 304 305 static void 306 wdattach(device_t parent, device_t self, void *aux) 307 { 308 struct wd_softc *wd = device_private(self); 309 struct dk_softc *dksc = &wd->sc_dksc; 310 struct ata_device *adev= aux; 311 int i, blank; 312 char tbuf[41], pbuf[9], c, *p, *q; 313 const struct wd_quirk *wdq; 314 int dtype = DKTYPE_UNKNOWN; 315 316 dksc->sc_dev = self; 317 318 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 319 mutex_init(&wd->sc_lock, MUTEX_DEFAULT, IPL_BIO); 320 #ifdef WD_SOFTBADSECT 321 SLIST_INIT(&wd->sc_bslist); 322 #endif 323 wd->atabus = adev->adev_bustype; 324 wd->drvp = adev->adev_drv_data; 325 326 wd->drvp->drv_openings = 1; 327 wd->drvp->drv_start = wdstart; 328 wd->drvp->drv_done = wddone; 329 wd->drvp->drv_softc = dksc->sc_dev; /* done in atabusconfig_thread() 330 but too late */ 331 332 aprint_naive("\n"); 333 aprint_normal("\n"); 334 335 /* read our drive info */ 336 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 337 aprint_error_dev(self, "IDENTIFY failed\n"); 338 goto out; 339 } 340 341 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 342 i < sizeof(wd->sc_params.atap_model); i++) { 343 c = *p++; 344 if (c == '\0') 345 break; 346 if (c != ' ') { 347 if (blank) { 348 *q++ = ' '; 349 blank = 0; 350 } 351 *q++ = c; 352 } else 353 blank = 1; 354 } 355 *q++ = '\0'; 356 357 aprint_normal_dev(self, "<%s>\n", tbuf); 358 359 wdq = wd_lookup_quirks(tbuf); 360 if (wdq != NULL) 361 wd->sc_quirks = wdq->wdq_quirks; 362 363 if (wd->sc_quirks != 0) { 364 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 365 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 366 aprint_normal_dev(self, "quirks %s\n", sbuf); 367 368 if (wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) { 369 aprint_error_dev(self, "drive corrupts write transfers with certain controllers, consider replacing\n"); 370 } 371 } 372 373 if ((wd->sc_params.atap_multi & 0xff) > 1) { 374 wd->drvp->multi = wd->sc_params.atap_multi & 0xff; 375 } else { 376 wd->drvp->multi = 1; 377 } 378 379 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 380 wd->drvp->multi); 381 382 /* 48-bit LBA addressing */ 383 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 384 wd->sc_flags |= WDF_LBA48; 385 386 /* Prior to ATA-4, LBA was optional. */ 387 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 388 wd->sc_flags |= WDF_LBA; 389 #if 0 390 /* ATA-4 requires LBA. */ 391 if (wd->sc_params.atap_ataversion != 0xffff && 392 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 393 wd->sc_flags |= WDF_LBA; 394 #endif 395 396 if ((wd->sc_flags & WDF_LBA48) != 0) { 397 aprint_verbose(" LBA48 addressing\n"); 398 wd->sc_capacity = 399 ((uint64_t) wd->sc_params.atap_max_lba[3] << 48) | 400 ((uint64_t) wd->sc_params.atap_max_lba[2] << 32) | 401 ((uint64_t) wd->sc_params.atap_max_lba[1] << 16) | 402 ((uint64_t) wd->sc_params.atap_max_lba[0] << 0); 403 wd->sc_capacity28 = 404 (wd->sc_params.atap_capacity[1] << 16) | 405 wd->sc_params.atap_capacity[0]; 406 } else if ((wd->sc_flags & WDF_LBA) != 0) { 407 aprint_verbose(" LBA addressing\n"); 408 wd->sc_capacity28 = wd->sc_capacity = 409 (wd->sc_params.atap_capacity[1] << 16) | 410 wd->sc_params.atap_capacity[0]; 411 } else { 412 aprint_verbose(" chs addressing\n"); 413 wd->sc_capacity28 = wd->sc_capacity = 414 wd->sc_params.atap_cylinders * 415 wd->sc_params.atap_heads * 416 wd->sc_params.atap_sectors; 417 } 418 if ((wd->sc_params.atap_secsz & ATA_SECSZ_VALID_MASK) == ATA_SECSZ_VALID 419 && ((wd->sc_params.atap_secsz & ATA_SECSZ_LLS) != 0)) { 420 wd->sc_blksize = 2ULL * 421 ((uint32_t)((wd->sc_params.atap_lls_secsz[1] << 16) | 422 wd->sc_params.atap_lls_secsz[0])); 423 } else { 424 wd->sc_blksize = 512; 425 } 426 wd->sc_capacity512 = (wd->sc_capacity * wd->sc_blksize) / DEV_BSIZE; 427 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * wd->sc_blksize); 428 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 429 "%d bytes/sect x %llu sectors\n", 430 pbuf, 431 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 432 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 433 wd->sc_params.atap_cylinders, 434 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 435 wd->sc_blksize, (unsigned long long)wd->sc_capacity); 436 437 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 438 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 439 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 440 441 if (wd->sc_blksize <= 0 || !powerof2(wd->sc_blksize) || 442 wd->sc_blksize < DEV_BSIZE || wd->sc_blksize > MAXPHYS) { 443 aprint_normal_dev(self, "WARNING: block size %u " 444 "might not actually work\n", wd->sc_blksize); 445 } 446 447 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 448 dtype = DKTYPE_ST506; 449 else 450 dtype = DKTYPE_ESDI; 451 452 out: 453 /* 454 * Initialize and attach the disk structure. 455 */ 456 dk_init(dksc, self, dtype); 457 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &wddkdriver); 458 459 /* Attach dk and disk subsystems */ 460 dk_attach(dksc); 461 disk_attach(&dksc->sc_dkdev); 462 wd_set_geometry(wd); 463 464 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 465 466 /* reference to label structure, used by ata code */ 467 wd->drvp->lp = dksc->sc_dkdev.dk_label; 468 469 /* Discover wedges on this disk. */ 470 dkwedge_discover(&dksc->sc_dkdev); 471 472 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 473 aprint_error_dev(self, "couldn't establish power handler\n"); 474 475 wd_sysctl_attach(wd); 476 } 477 478 static bool 479 wd_suspend(device_t dv, const pmf_qual_t *qual) 480 { 481 struct wd_softc *sc = device_private(dv); 482 483 /* the adapter needs to be enabled */ 484 if (sc->atabus->ata_addref(sc->drvp)) 485 return true; /* no need to complain */ 486 487 wd_flushcache(sc, AT_WAIT, false); 488 wd_standby(sc, AT_WAIT); 489 490 sc->atabus->ata_delref(sc->drvp); 491 return true; 492 } 493 494 static int 495 wddetach(device_t self, int flags) 496 { 497 struct wd_softc *wd = device_private(self); 498 struct dk_softc *dksc = &wd->sc_dksc; 499 int bmaj, cmaj, i, mn, rc; 500 501 if ((rc = disk_begindetach(&dksc->sc_dkdev, wd_lastclose, self, flags)) != 0) 502 return rc; 503 504 /* locate the major number */ 505 bmaj = bdevsw_lookup_major(&wd_bdevsw); 506 cmaj = cdevsw_lookup_major(&wd_cdevsw); 507 508 /* Nuke the vnodes for any open instances. */ 509 for (i = 0; i < MAXPARTITIONS; i++) { 510 mn = WDMINOR(device_unit(self), i); 511 vdevgone(bmaj, mn, mn, VBLK); 512 vdevgone(cmaj, mn, mn, VCHR); 513 } 514 515 dk_drain(dksc); 516 517 /* Kill off any pending commands. */ 518 mutex_enter(&wd->sc_lock); 519 wd->atabus->ata_killpending(wd->drvp); 520 mutex_exit(&wd->sc_lock); 521 522 bufq_free(dksc->sc_bufq); 523 524 if (flags & DETACH_POWEROFF) 525 wd_standby(wd, AT_POLL); 526 527 /* Delete all of our wedges. */ 528 dkwedge_delall(&dksc->sc_dkdev); 529 530 /* Detach from the disk list. */ 531 disk_detach(&dksc->sc_dkdev); 532 disk_destroy(&dksc->sc_dkdev); 533 534 dk_detach(dksc); 535 536 #ifdef WD_SOFTBADSECT 537 /* Clean out the bad sector list */ 538 while (!SLIST_EMPTY(&sc->sc_bslist)) { 539 void *head = SLIST_FIRST(&sc->sc_bslist); 540 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 541 free(head, M_TEMP); 542 } 543 sc->sc_bscount = 0; 544 #endif 545 546 pmf_device_deregister(self); 547 548 wd_sysctl_detach(wd); 549 550 mutex_destroy(&wd->sc_lock); 551 552 wd->drvp->drive_type = ATA_DRIVET_NONE; /* no drive any more here */ 553 wd->drvp->drive_flags = 0; 554 555 return (0); 556 } 557 558 /* 559 * Read/write routine for a buffer. Validates the arguments and schedules the 560 * transfer. Does not wait for the transfer to complete. 561 */ 562 static void 563 wdstrategy(struct buf *bp) 564 { 565 struct wd_softc *wd = 566 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 567 struct dk_softc *dksc = &wd->sc_dksc; 568 569 ATADEBUG_PRINT(("wdstrategy (%s)\n", dksc->sc_xname), 570 DEBUG_XFERS); 571 572 /* If device invalidated (e.g. media change, door open, 573 * device detachment), then error. 574 */ 575 if ((wd->sc_flags & WDF_LOADED) == 0 || 576 !device_is_enabled(dksc->sc_dev)) 577 goto err; 578 579 #ifdef WD_SOFTBADSECT 580 /* 581 * If the transfer about to be attempted contains only a block that 582 * is known to be bad then return an error for the transfer without 583 * even attempting to start a transfer up under the premis that we 584 * will just end up doing more retries for a transfer that will end 585 * up failing again. 586 */ 587 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 588 struct disk_badsectors *dbs; 589 daddr_t maxblk = blkno + (bp->b_bcount / wd->sc_blksize) - 1; 590 591 mutex_enter(&wd->sc_lock); 592 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 593 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 594 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 595 mutex_exit(&wd->sc_lock); 596 goto err; 597 } 598 mutex_exit(&wd->sc_lock); 599 } 600 #endif 601 602 dk_strategy(dksc, bp); 603 return; 604 605 err: 606 bp->b_error = EIO; 607 bp->b_resid = bp->b_bcount; 608 biodone(bp); 609 } 610 611 static void 612 wdstart1(struct wd_softc *wd, struct buf *bp, struct ata_xfer *xfer) 613 { 614 struct dk_softc *dksc = &wd->sc_dksc; 615 616 KASSERT(bp == xfer->c_bio.bp || xfer->c_bio.bp == NULL); 617 KASSERT((xfer->c_flags & (C_WAITACT|C_FREE)) == 0); 618 619 /* Reset state, so that retries don't use stale info */ 620 if (__predict_false(xfer->c_retries > 0)) { 621 xfer->c_flags = 0; 622 memset(&xfer->c_bio, 0, sizeof(xfer->c_bio)); 623 } 624 625 xfer->c_bio.blkno = bp->b_rawblkno; 626 xfer->c_bio.bcount = bp->b_bcount; 627 xfer->c_bio.databuf = bp->b_data; 628 xfer->c_bio.blkdone = 0; 629 xfer->c_bio.bp = bp; 630 631 #ifdef WD_CHAOS_MONKEY 632 /* 633 * Override blkno to be over device capacity to trigger error, 634 * but only if it's read, to avoid trashing disk contents should 635 * the command be clipped, or otherwise misinterpreted, by the 636 * driver or controller. 637 */ 638 if (BUF_ISREAD(bp) && xfer->c_retries == 0 && wd->drv_chaos_freq > 0 && 639 (++wd->drv_chaos_cnt % wd->drv_chaos_freq) == 0) { 640 aprint_normal_dev(dksc->sc_dev, "%s: chaos xfer %d\n", 641 __func__, xfer->c_slot); 642 xfer->c_bio.blkno = 7777777 + wd->sc_capacity; 643 xfer->c_flags |= C_CHAOS; 644 } 645 #endif 646 647 /* 648 * If we're retrying, retry in single-sector mode. This will give us 649 * the sector number of the problem, and will eventually allow the 650 * transfer to succeed. If FUA is requested, we can't actually 651 * do this, as ATA_SINGLE is usually executed as PIO transfer by drivers 652 * which support it, and that isn't compatible with NCQ/FUA. 653 */ 654 if (xfer->c_retries >= WDIORETRIES_SINGLE && 655 (bp->b_flags & B_MEDIA_FUA) == 0) 656 xfer->c_bio.flags = ATA_SINGLE; 657 else 658 xfer->c_bio.flags = 0; 659 660 /* 661 * request LBA48 transfers when supported by the controller 662 * and needed by transfer offset or size. 663 */ 664 if (wd->sc_flags & WDF_LBA48 && 665 (((xfer->c_bio.blkno + 666 xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 667 wd->sc_capacity28) || 668 ((xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 128))) 669 xfer->c_bio.flags |= ATA_LBA48; 670 671 /* 672 * If NCQ was negotiated, always use it for the first several attempts. 673 * Since device cancels all outstanding requests on error, downgrade 674 * to non-NCQ on retry, so that the retried transfer would not cause 675 * cascade failure for the other transfers if it fails again. 676 * If FUA was requested, we can't downgrade, as that would violate 677 * the semantics - FUA would not be honored. In that case, continue 678 * retrying with NCQ. 679 */ 680 if (WD_USE_NCQ(wd) && (xfer->c_retries < WDIORETRIES_SINGLE || 681 (bp->b_flags & B_MEDIA_FUA) != 0)) { 682 xfer->c_bio.flags |= ATA_LBA48; 683 xfer->c_flags |= C_NCQ; 684 685 if (WD_USE_NCQ_PRIO(wd) && 686 BIO_GETPRIO(bp) == BPRIO_TIMECRITICAL) 687 xfer->c_bio.flags |= ATA_PRIO_HIGH; 688 } 689 690 if (wd->sc_flags & WDF_LBA) 691 xfer->c_bio.flags |= ATA_LBA; 692 if (bp->b_flags & B_READ) 693 xfer->c_bio.flags |= ATA_READ; 694 if (bp->b_flags & B_MEDIA_FUA) { 695 /* If not using NCQ, the command WRITE DMA FUA EXT is LBA48 */ 696 KASSERT((wd->sc_flags & WDF_LBA48) != 0); 697 if ((xfer->c_flags & C_NCQ) == 0) 698 xfer->c_bio.flags |= ATA_LBA48; 699 700 xfer->c_bio.flags |= ATA_FUA; 701 } 702 703 switch (wd->atabus->ata_bio(wd->drvp, xfer)) { 704 case ATACMD_TRY_AGAIN: 705 panic("wdstart1: try again"); 706 break; 707 case ATACMD_QUEUED: 708 case ATACMD_COMPLETE: 709 break; 710 default: 711 panic("wdstart1: bad return code from ata_bio()"); 712 } 713 } 714 715 static int 716 wd_diskstart(device_t dev, struct buf *bp) 717 { 718 struct wd_softc *wd = device_private(dev); 719 #ifdef ATADEBUG 720 struct dk_softc *dksc = &wd->sc_dksc; 721 #endif 722 struct ata_xfer *xfer; 723 724 mutex_enter(&wd->sc_lock); 725 726 xfer = ata_get_xfer_ext(wd->drvp->chnl_softc, 0, 727 WD_USE_NCQ(wd) ? WD_MAX_OPENINGS(wd) : 0); 728 if (xfer == NULL) { 729 ATADEBUG_PRINT(("wd_diskstart %s no xfer\n", 730 dksc->sc_xname), DEBUG_XFERS); 731 mutex_exit(&wd->sc_lock); 732 return EAGAIN; 733 } 734 735 wdstart1(wd, bp, xfer); 736 737 mutex_exit(&wd->sc_lock); 738 739 return 0; 740 } 741 742 /* 743 * Queue a drive for I/O. 744 */ 745 static void 746 wdstart(device_t self) 747 { 748 struct wd_softc *wd = device_private(self); 749 struct dk_softc *dksc = &wd->sc_dksc; 750 751 ATADEBUG_PRINT(("wdstart %s\n", dksc->sc_xname), 752 DEBUG_XFERS); 753 754 if (!device_is_active(dksc->sc_dev)) 755 return; 756 757 /* 758 * Do not queue any transfers until flush is finished, so that 759 * once flush is pending, it will get handled as soon as xfer 760 * is available. 761 */ 762 if (ISSET(wd->sc_flags, WDF_FLUSH_PEND)) { 763 ATADEBUG_PRINT(("wdstart %s flush pend\n", 764 dksc->sc_xname), DEBUG_XFERS); 765 return; 766 } 767 768 dk_start(dksc, NULL); 769 } 770 771 static void 772 wddone(device_t self, struct ata_xfer *xfer) 773 { 774 struct wd_softc *wd = device_private(self); 775 struct dk_softc *dksc = &wd->sc_dksc; 776 const char *errmsg; 777 int do_perror = 0; 778 struct buf *bp; 779 780 ATADEBUG_PRINT(("wddone %s\n", dksc->sc_xname), 781 DEBUG_XFERS); 782 783 if (__predict_false(wddoingadump)) { 784 /* just drop it to the floor */ 785 ata_free_xfer(wd->drvp->chnl_softc, xfer); 786 return; 787 } 788 789 bp = xfer->c_bio.bp; 790 KASSERT(bp != NULL); 791 792 bp->b_resid = xfer->c_bio.bcount; 793 switch (xfer->c_bio.error) { 794 case ERR_DMA: 795 errmsg = "DMA error"; 796 goto retry; 797 case ERR_DF: 798 errmsg = "device fault"; 799 goto retry; 800 case TIMEOUT: 801 errmsg = "device timeout"; 802 goto retry; 803 case REQUEUE: 804 errmsg = "requeue"; 805 goto retry2; 806 case ERR_RESET: 807 errmsg = "channel reset"; 808 goto retry2; 809 case ERROR: 810 /* Don't care about media change bits */ 811 if (xfer->c_bio.r_error != 0 && 812 (xfer->c_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 813 goto noerror; 814 errmsg = "error"; 815 do_perror = 1; 816 retry: /* Just reset and retry. Can we do more ? */ 817 if ((xfer->c_flags & C_RECOVERED) == 0) { 818 int wflags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; 819 (*wd->atabus->ata_reset_drive)(wd->drvp, wflags, NULL); 820 } 821 retry2: 822 mutex_enter(&wd->sc_lock); 823 824 diskerr(bp, "wd", errmsg, LOG_PRINTF, 825 xfer->c_bio.blkdone, dksc->sc_dkdev.dk_label); 826 if (xfer->c_retries < WDIORETRIES) 827 printf(", slot %d, retry %d", xfer->c_slot, 828 xfer->c_retries + 1); 829 printf("\n"); 830 if (do_perror) 831 wdperror(wd, xfer); 832 833 if (xfer->c_retries < WDIORETRIES) { 834 xfer->c_retries++; 835 836 /* Rerun ASAP if just requeued */ 837 callout_reset(&xfer->c_retry_callout, 838 (xfer->c_bio.error == REQUEUE) ? 1 : RECOVERYTIME, 839 wdbiorestart, xfer); 840 841 mutex_exit(&wd->sc_lock); 842 return; 843 } 844 845 mutex_exit(&wd->sc_lock); 846 847 #ifdef WD_SOFTBADSECT 848 /* 849 * Not all errors indicate a failed block but those that do, 850 * put the block on the bad-block list for the device. Only 851 * do this for reads because the drive should do it for writes, 852 * itself, according to Manuel. 853 */ 854 if ((bp->b_flags & B_READ) && 855 ((wd->drvp->ata_vers >= 4 && xfer->c_bio.r_error & 64) || 856 (wd->drvp->ata_vers < 4 && xfer->c_bio.r_error & 192))) { 857 struct disk_badsectors *dbs; 858 859 dbs = malloc(sizeof *dbs, M_TEMP, M_NOWAIT); 860 if (dbs == NULL) { 861 aprint_error_dev(dksc->sc_dev, 862 "failed to add bad block to list\n"); 863 goto out; 864 } 865 866 dbs->dbs_min = bp->b_rawblkno; 867 dbs->dbs_max = dbs->dbs_min + 868 (bp->b_bcount /wd->sc_blksize) - 1; 869 microtime(&dbs->dbs_failedat); 870 871 mutex_enter(&wd->sc_lock); 872 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 873 wd->sc_bscount++; 874 mutex_exit(&wd->sc_lock); 875 } 876 out: 877 #endif 878 bp->b_error = EIO; 879 break; 880 case NOERROR: 881 noerror: if ((xfer->c_bio.flags & ATA_CORR) || xfer->c_retries > 0) 882 aprint_error_dev(dksc->sc_dev, 883 "soft error (corrected) slot %d\n", xfer->c_slot); 884 #ifdef WD_CHAOS_MONKEY 885 KASSERT((xfer->c_flags & C_CHAOS) == 0); 886 #endif 887 break; 888 case ERR_NODEV: 889 bp->b_error = EIO; 890 break; 891 } 892 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 893 /* 894 * the disk or controller sometimes report a complete 895 * xfer, when there has been an error. This is wrong, 896 * assume nothing got transfered in this case 897 */ 898 bp->b_resid = bp->b_bcount; 899 } 900 901 ata_free_xfer(wd->drvp->chnl_softc, xfer); 902 903 dk_done(dksc, bp); 904 ata_channel_start(wd->drvp->chnl_softc, wd->drvp->drive); 905 } 906 907 static void 908 wdbiorestart(void *v) 909 { 910 struct ata_xfer *xfer = v; 911 struct buf *bp = xfer->c_bio.bp; 912 struct wd_softc *wd = device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 913 #ifdef ATADEBUG 914 struct dk_softc *dksc = &wd->sc_dksc; 915 #endif 916 917 ATADEBUG_PRINT(("wdbiorestart %s\n", dksc->sc_xname), 918 DEBUG_XFERS); 919 920 mutex_enter(&wd->sc_lock); 921 wdstart1(wd, bp, xfer); 922 mutex_exit(&wd->sc_lock); 923 } 924 925 static void 926 wdminphys(struct buf *bp) 927 { 928 const struct wd_softc * const wd = 929 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 930 int maxsectors; 931 932 /* 933 * The limit is actually 65536 for LBA48 and 256 for non-LBA48, 934 * but that requires to set the count for the ATA command 935 * to 0, which is somewhat error prone, so better stay safe. 936 */ 937 if (wd->sc_flags & WDF_LBA48) 938 maxsectors = 65535; 939 else 940 maxsectors = 128; 941 942 if (bp->b_bcount > (wd->sc_blksize * maxsectors)) 943 bp->b_bcount = (wd->sc_blksize * maxsectors); 944 945 minphys(bp); 946 } 947 948 static void 949 wd_iosize(device_t dev, int *count) 950 { 951 struct buf B; 952 int bmaj; 953 954 bmaj = bdevsw_lookup_major(&wd_bdevsw); 955 B.b_dev = MAKEWDDEV(bmaj,device_unit(dev),RAW_PART); 956 B.b_bcount = *count; 957 958 wdminphys(&B); 959 960 *count = B.b_bcount; 961 } 962 963 static int 964 wdread(dev_t dev, struct uio *uio, int flags) 965 { 966 967 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 968 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 969 } 970 971 static int 972 wdwrite(dev_t dev, struct uio *uio, int flags) 973 { 974 975 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 976 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 977 } 978 979 static int 980 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 981 { 982 struct wd_softc *wd; 983 struct dk_softc *dksc; 984 int unit, part, error; 985 986 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 987 unit = WDUNIT(dev); 988 wd = device_lookup_private(&wd_cd, unit); 989 if (wd == NULL) 990 return (ENXIO); 991 dksc = &wd->sc_dksc; 992 993 if (! device_is_active(dksc->sc_dev)) 994 return (ENODEV); 995 996 part = WDPART(dev); 997 998 if (wd->sc_capacity == 0) 999 return (ENODEV); 1000 1001 /* 1002 * If any partition is open, but the disk has been invalidated, 1003 * disallow further opens. 1004 */ 1005 if ((wd->sc_flags & (WDF_OPEN | WDF_LOADED)) == WDF_OPEN) { 1006 if (part != RAW_PART || fmt != S_IFCHR) 1007 return EIO; 1008 } 1009 1010 error = dk_open(dksc, dev, flag, fmt, l); 1011 1012 return error; 1013 } 1014 1015 /* 1016 * Serialized by caller 1017 */ 1018 static int 1019 wd_firstopen(device_t self, dev_t dev, int flag, int fmt) 1020 { 1021 struct wd_softc *wd = device_private(self); 1022 struct dk_softc *dksc = &wd->sc_dksc; 1023 int error; 1024 1025 error = wd->atabus->ata_addref(wd->drvp); 1026 if (error) 1027 return error; 1028 1029 if ((wd->sc_flags & WDF_LOADED) == 0) { 1030 int param_error; 1031 1032 /* Load the physical device parameters. */ 1033 param_error = wd_get_params(wd, AT_WAIT, &wd->sc_params); 1034 if (param_error != 0) { 1035 aprint_error_dev(dksc->sc_dev, "IDENTIFY failed\n"); 1036 error = EIO; 1037 goto bad; 1038 } 1039 wd_set_geometry(wd); 1040 wd->sc_flags |= WDF_LOADED; 1041 } 1042 1043 wd->sc_flags |= WDF_OPEN; 1044 return 0; 1045 1046 bad: 1047 wd->atabus->ata_delref(wd->drvp); 1048 return error; 1049 } 1050 1051 /* 1052 * Caller must hold wd->sc_dk.dk_openlock. 1053 */ 1054 static int 1055 wd_lastclose(device_t self) 1056 { 1057 struct wd_softc *wd = device_private(self); 1058 1059 wd_flushcache(wd, AT_WAIT, false); 1060 1061 wd->atabus->ata_delref(wd->drvp); 1062 wd->sc_flags &= ~WDF_OPEN; 1063 1064 return 0; 1065 } 1066 1067 static int 1068 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1069 { 1070 struct wd_softc *wd; 1071 struct dk_softc *dksc; 1072 int unit; 1073 1074 unit = WDUNIT(dev); 1075 wd = device_lookup_private(&wd_cd, unit); 1076 dksc = &wd->sc_dksc; 1077 1078 return dk_close(dksc, dev, flag, fmt, l); 1079 } 1080 1081 void 1082 wdperror(const struct wd_softc *wd, struct ata_xfer *xfer) 1083 { 1084 static const char *const errstr0_3[] = {"address mark not found", 1085 "track 0 not found", "aborted command", "media change requested", 1086 "id not found", "media changed", "uncorrectable data error", 1087 "bad block detected"}; 1088 static const char *const errstr4_5[] = { 1089 "obsolete (address mark not found)", 1090 "no media/write protected", "aborted command", 1091 "media change requested", "id not found", "media changed", 1092 "uncorrectable data error", "interface CRC error"}; 1093 const char *const *errstr; 1094 int i; 1095 const char *sep = ""; 1096 1097 const struct dk_softc *dksc = &wd->sc_dksc; 1098 const char *devname = dksc->sc_xname; 1099 struct ata_drive_datas *drvp = wd->drvp; 1100 int errno = xfer->c_bio.r_error; 1101 1102 if (drvp->ata_vers >= 4) 1103 errstr = errstr4_5; 1104 else 1105 errstr = errstr0_3; 1106 1107 printf("%s: (", devname); 1108 1109 if (errno == 0) 1110 printf("error not notified"); 1111 1112 for (i = 0; i < 8; i++) { 1113 if (errno & (1 << i)) { 1114 printf("%s%s", sep, errstr[i]); 1115 sep = ", "; 1116 } 1117 } 1118 printf(")\n"); 1119 } 1120 1121 int 1122 wdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1123 { 1124 struct wd_softc *wd = 1125 device_lookup_private(&wd_cd, WDUNIT(dev)); 1126 struct dk_softc *dksc = &wd->sc_dksc; 1127 1128 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1129 1130 if ((wd->sc_flags & WDF_LOADED) == 0) 1131 return EIO; 1132 1133 switch (cmd) { 1134 #ifdef HAS_BAD144_HANDLING 1135 case DIOCSBAD: 1136 if ((flag & FWRITE) == 0) 1137 return EBADF; 1138 dksc->sc_dkdev.dk_cpulabel->bad = *(struct dkbad *)addr; 1139 dksc->sc_dkdev.dk_label->d_flags |= D_BADSECT; 1140 bad144intern(wd); 1141 return 0; 1142 #endif 1143 #ifdef WD_SOFTBADSECT 1144 case DIOCBSLIST : 1145 { 1146 uint32_t count, missing, skip; 1147 struct disk_badsecinfo dbsi; 1148 struct disk_badsectors *dbs; 1149 size_t available; 1150 uint8_t *laddr; 1151 1152 dbsi = *(struct disk_badsecinfo *)addr; 1153 missing = wd->sc_bscount; 1154 count = 0; 1155 available = dbsi.dbsi_bufsize; 1156 skip = dbsi.dbsi_skip; 1157 laddr = (uint8_t *)dbsi.dbsi_buffer; 1158 1159 /* 1160 * We start this loop with the expectation that all of the 1161 * entries will be missed and decrement this counter each 1162 * time we either skip over one (already copied out) or 1163 * we actually copy it back to user space. The structs 1164 * holding the bad sector information are copied directly 1165 * back to user space whilst the summary is returned via 1166 * the struct passed in via the ioctl. 1167 */ 1168 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1169 if (skip > 0) { 1170 missing--; 1171 skip--; 1172 continue; 1173 } 1174 if (available < sizeof(*dbs)) 1175 break; 1176 available -= sizeof(*dbs); 1177 copyout(dbs, laddr, sizeof(*dbs)); 1178 laddr += sizeof(*dbs); 1179 missing--; 1180 count++; 1181 } 1182 dbsi.dbsi_left = missing; 1183 dbsi.dbsi_copied = count; 1184 *(struct disk_badsecinfo *)addr = dbsi; 1185 return 0; 1186 } 1187 1188 case DIOCBSFLUSH : 1189 /* Clean out the bad sector list */ 1190 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1191 void *head = SLIST_FIRST(&wd->sc_bslist); 1192 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1193 free(head, M_TEMP); 1194 } 1195 wd->sc_bscount = 0; 1196 return 0; 1197 #endif 1198 1199 #ifdef notyet 1200 case DIOCWFORMAT: 1201 if ((flag & FWRITE) == 0) 1202 return EBADF; 1203 { 1204 register struct format_op *fop; 1205 struct iovec aiov; 1206 struct uio auio; 1207 int error1; 1208 1209 fop = (struct format_op *)addr; 1210 aiov.iov_base = fop->df_buf; 1211 aiov.iov_len = fop->df_count; 1212 auio.uio_iov = &aiov; 1213 auio.uio_iovcnt = 1; 1214 auio.uio_resid = fop->df_count; 1215 auio.uio_offset = 1216 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1217 auio.uio_vmspace = l->l_proc->p_vmspace; 1218 error1 = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1219 &auio); 1220 fop->df_count -= auio.uio_resid; 1221 fop->df_reg[0] = wdc->sc_status; 1222 fop->df_reg[1] = wdc->sc_error; 1223 return error1; 1224 } 1225 #endif 1226 case DIOCGCACHE: 1227 return wd_getcache(wd, (int *)addr); 1228 1229 case DIOCSCACHE: 1230 return wd_setcache(wd, *(int *)addr); 1231 1232 case DIOCCACHESYNC: 1233 return wd_flushcache(wd, AT_WAIT, true); 1234 1235 case ATAIOCCOMMAND: 1236 /* 1237 * Make sure this command is (relatively) safe first 1238 */ 1239 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1240 (flag & FWRITE) == 0) 1241 return (EBADF); 1242 { 1243 struct wd_ioctl *wi; 1244 atareq_t *atareq = (atareq_t *) addr; 1245 int error1; 1246 1247 wi = wi_get(wd); 1248 wi->wi_atareq = *atareq; 1249 1250 if (atareq->datalen && atareq->flags & 1251 (ATACMD_READ | ATACMD_WRITE)) { 1252 void *tbuf; 1253 if (atareq->datalen < DEV_BSIZE 1254 && atareq->command == WDCC_IDENTIFY) { 1255 tbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK); 1256 wi->wi_iov.iov_base = tbuf; 1257 wi->wi_iov.iov_len = DEV_BSIZE; 1258 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1259 } else { 1260 tbuf = NULL; 1261 wi->wi_iov.iov_base = atareq->databuf; 1262 wi->wi_iov.iov_len = atareq->datalen; 1263 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1264 } 1265 wi->wi_uio.uio_iov = &wi->wi_iov; 1266 wi->wi_uio.uio_iovcnt = 1; 1267 wi->wi_uio.uio_resid = atareq->datalen; 1268 wi->wi_uio.uio_offset = 0; 1269 wi->wi_uio.uio_rw = 1270 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1271 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1272 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1273 wdminphys, &wi->wi_uio); 1274 if (tbuf != NULL && error1 == 0) { 1275 error1 = copyout(tbuf, atareq->databuf, 1276 atareq->datalen); 1277 free(tbuf, M_TEMP); 1278 } 1279 } else { 1280 /* No need to call physio if we don't have any 1281 user data */ 1282 wi->wi_bp.b_flags = 0; 1283 wi->wi_bp.b_data = 0; 1284 wi->wi_bp.b_bcount = 0; 1285 wi->wi_bp.b_dev = dev; 1286 wi->wi_bp.b_proc = l->l_proc; 1287 wdioctlstrategy(&wi->wi_bp); 1288 error1 = wi->wi_bp.b_error; 1289 } 1290 *atareq = wi->wi_atareq; 1291 wi_free(wi); 1292 return(error1); 1293 } 1294 1295 default: 1296 return dk_ioctl(dksc, dev, cmd, addr, flag, l); 1297 } 1298 1299 #ifdef DIAGNOSTIC 1300 panic("wdioctl: impossible"); 1301 #endif 1302 } 1303 1304 static int 1305 wd_discard(device_t dev, off_t pos, off_t len) 1306 { 1307 struct wd_softc *wd = device_private(dev); 1308 daddr_t bno; 1309 long size, done; 1310 long maxatonce, amount; 1311 int result; 1312 1313 if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA7) 1314 || !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM)) { 1315 /* not supported; ignore request */ 1316 ATADEBUG_PRINT(("wddiscard (unsupported)\n"), DEBUG_FUNCS); 1317 return 0; 1318 } 1319 maxatonce = 0xffff; /*wd->sc_params.max_dsm_blocks*/ 1320 1321 ATADEBUG_PRINT(("wddiscard\n"), DEBUG_FUNCS); 1322 1323 if ((wd->sc_flags & WDF_LOADED) == 0) 1324 return EIO; 1325 1326 /* round the start up and the end down */ 1327 bno = (pos + wd->sc_blksize - 1) / wd->sc_blksize; 1328 size = ((pos + len) / wd->sc_blksize) - bno; 1329 1330 done = 0; 1331 while (done < size) { 1332 amount = size - done; 1333 if (amount > maxatonce) { 1334 amount = maxatonce; 1335 } 1336 result = wd_trim(wd, bno + done, amount); 1337 if (result) { 1338 return result; 1339 } 1340 done += amount; 1341 } 1342 return 0; 1343 } 1344 1345 static int 1346 wddiscard(dev_t dev, off_t pos, off_t len) 1347 { 1348 struct wd_softc *wd; 1349 struct dk_softc *dksc; 1350 int unit; 1351 1352 unit = WDUNIT(dev); 1353 wd = device_lookup_private(&wd_cd, unit); 1354 dksc = &wd->sc_dksc; 1355 1356 return dk_discard(dksc, dev, pos, len); 1357 } 1358 1359 #ifdef B_FORMAT 1360 int 1361 wdformat(struct buf *bp) 1362 { 1363 1364 bp->b_flags |= B_FORMAT; 1365 return wdstrategy(bp); 1366 } 1367 #endif 1368 1369 int 1370 wdsize(dev_t dev) 1371 { 1372 struct wd_softc *wd; 1373 struct dk_softc *dksc; 1374 int unit; 1375 1376 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1377 1378 unit = WDUNIT(dev); 1379 wd = device_lookup_private(&wd_cd, unit); 1380 if (wd == NULL) 1381 return (-1); 1382 dksc = &wd->sc_dksc; 1383 1384 if (!device_is_active(dksc->sc_dev)) 1385 return (-1); 1386 1387 return dk_size(dksc, dev); 1388 } 1389 1390 /* 1391 * Dump core after a system crash. 1392 */ 1393 static int 1394 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1395 { 1396 struct wd_softc *wd; 1397 struct dk_softc *dksc; 1398 int unit; 1399 1400 /* Check if recursive dump; if so, punt. */ 1401 if (wddoingadump) 1402 return EFAULT; 1403 wddoingadump = 1; 1404 1405 unit = WDUNIT(dev); 1406 wd = device_lookup_private(&wd_cd, unit); 1407 if (wd == NULL) 1408 return (ENXIO); 1409 dksc = &wd->sc_dksc; 1410 1411 return dk_dump(dksc, dev, blkno, va, size); 1412 } 1413 1414 static int 1415 wd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1416 { 1417 struct wd_softc *wd = device_private(dev); 1418 struct dk_softc *dksc = &wd->sc_dksc; 1419 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1420 struct ata_xfer *xfer; 1421 int err; 1422 1423 /* Recalibrate, if first dump transfer. */ 1424 if (wddumprecalibrated == 0) { 1425 wddumprecalibrated = 1; 1426 (*wd->atabus->ata_reset_drive)(wd->drvp, 1427 AT_POLL | AT_RST_EMERG, NULL); 1428 wd->drvp->state = RESET; 1429 } 1430 1431 xfer = ata_get_xfer_ext(wd->drvp->chnl_softc, 0, 0); 1432 if (xfer == NULL) { 1433 printf("%s: no xfer\n", __func__); 1434 return EAGAIN; 1435 } 1436 1437 xfer->c_bio.blkno = blkno; 1438 xfer->c_bio.flags = ATA_POLL; 1439 if (wd->sc_flags & WDF_LBA48 && 1440 (xfer->c_bio.blkno + nblk) > wd->sc_capacity28) 1441 xfer->c_bio.flags |= ATA_LBA48; 1442 if (wd->sc_flags & WDF_LBA) 1443 xfer->c_bio.flags |= ATA_LBA; 1444 xfer->c_bio.bcount = nblk * dg->dg_secsize; 1445 xfer->c_bio.databuf = va; 1446 #ifndef WD_DUMP_NOT_TRUSTED 1447 switch (err = wd->atabus->ata_bio(wd->drvp, xfer)) { 1448 case ATACMD_TRY_AGAIN: 1449 panic("wddump: try again"); 1450 break; 1451 case ATACMD_QUEUED: 1452 panic("wddump: polled command has been queued"); 1453 break; 1454 case ATACMD_COMPLETE: 1455 break; 1456 default: 1457 panic("wddump: unknown atacmd code %d", err); 1458 } 1459 switch(err = xfer->c_bio.error) { 1460 case TIMEOUT: 1461 printf("wddump: device timed out"); 1462 err = EIO; 1463 break; 1464 case ERR_DF: 1465 printf("wddump: drive fault"); 1466 err = EIO; 1467 break; 1468 case ERR_DMA: 1469 printf("wddump: DMA error"); 1470 err = EIO; 1471 break; 1472 case ERROR: 1473 printf("wddump: "); 1474 wdperror(wd, xfer); 1475 err = EIO; 1476 break; 1477 case NOERROR: 1478 err = 0; 1479 break; 1480 default: 1481 panic("wddump: unknown error type %d", err); 1482 } 1483 1484 if (err != 0) { 1485 printf("\n"); 1486 return err; 1487 } 1488 #else /* WD_DUMP_NOT_TRUSTED */ 1489 /* Let's just talk about this first... */ 1490 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1491 unit, va, cylin, head, sector); 1492 delay(500 * 1000); /* half a second */ 1493 #endif 1494 1495 wddoingadump = 0; 1496 return 0; 1497 } 1498 1499 #ifdef HAS_BAD144_HANDLING 1500 /* 1501 * Internalize the bad sector table. 1502 */ 1503 void 1504 bad144intern(struct wd_softc *wd) 1505 { 1506 struct dk_softc *dksc = &wd->sc_dksc; 1507 struct dkbad *bt = &dksc->sc_dkdev.dk_cpulabel->bad; 1508 struct disklabel *lp = dksc->sc_dkdev.dk_label; 1509 int i = 0; 1510 1511 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1512 1513 for (; i < NBT_BAD; i++) { 1514 if (bt->bt_bad[i].bt_cyl == 0xffff) 1515 break; 1516 wd->drvp->badsect[i] = 1517 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1518 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1519 (bt->bt_bad[i].bt_trksec & 0xff); 1520 } 1521 for (; i < NBT_BAD+1; i++) 1522 wd->drvp->badsect[i] = -1; 1523 } 1524 #endif 1525 1526 static void 1527 wd_set_geometry(struct wd_softc *wd) 1528 { 1529 struct dk_softc *dksc = &wd->sc_dksc; 1530 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1531 1532 memset(dg, 0, sizeof(*dg)); 1533 1534 dg->dg_secperunit = wd->sc_capacity; 1535 dg->dg_secsize = wd->sc_blksize; 1536 dg->dg_nsectors = wd->sc_params.atap_sectors; 1537 dg->dg_ntracks = wd->sc_params.atap_heads; 1538 if ((wd->sc_flags & WDF_LBA) == 0) 1539 dg->dg_ncylinders = wd->sc_params.atap_cylinders; 1540 1541 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL); 1542 } 1543 1544 int 1545 wd_get_params(struct wd_softc *wd, uint8_t flags, struct ataparams *params) 1546 { 1547 1548 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1549 case CMD_AGAIN: 1550 return 1; 1551 case CMD_ERR: 1552 if (wd->drvp->drive_type != ATA_DRIVET_OLD) 1553 return 1; 1554 /* 1555 * We `know' there's a drive here; just assume it's old. 1556 * This geometry is only used to read the MBR and print a 1557 * (false) attach message. 1558 */ 1559 strncpy(params->atap_model, "ST506", 1560 sizeof params->atap_model); 1561 params->atap_config = ATA_CFG_FIXED; 1562 params->atap_cylinders = 1024; 1563 params->atap_heads = 8; 1564 params->atap_sectors = 17; 1565 params->atap_multi = 1; 1566 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1567 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1568 /* FALLTHROUGH */ 1569 case CMD_OK: 1570 return 0; 1571 default: 1572 panic("wd_get_params: bad return code from ata_get_params"); 1573 /* NOTREACHED */ 1574 } 1575 } 1576 1577 int 1578 wd_getcache(struct wd_softc *wd, int *bitsp) 1579 { 1580 struct ataparams params; 1581 1582 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1583 return EIO; 1584 if (params.atap_cmd_set1 == 0x0000 || 1585 params.atap_cmd_set1 == 0xffff || 1586 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1587 *bitsp = 0; 1588 return 0; 1589 } 1590 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1591 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1592 *bitsp |= DKCACHE_WRITE; 1593 1594 if (WD_USE_NCQ(wd) || (wd->drvp->drive_flags & ATA_DRIVE_WFUA)) 1595 *bitsp |= DKCACHE_FUA; 1596 1597 return 0; 1598 } 1599 1600 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1601 1602 int 1603 wd_setcache(struct wd_softc *wd, int bits) 1604 { 1605 struct dk_softc *dksc = &wd->sc_dksc; 1606 struct ataparams params; 1607 struct ata_xfer *xfer; 1608 int error; 1609 1610 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1611 return EIO; 1612 1613 if (params.atap_cmd_set1 == 0x0000 || 1614 params.atap_cmd_set1 == 0xffff || 1615 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1616 return EOPNOTSUPP; 1617 1618 if ((bits & DKCACHE_READ) == 0 || 1619 (bits & DKCACHE_SAVE) != 0) 1620 return EOPNOTSUPP; 1621 1622 xfer = ata_get_xfer(wd->drvp->chnl_softc); 1623 if (xfer == NULL) 1624 return EINTR; 1625 1626 xfer->c_ata_c.r_command = SET_FEATURES; 1627 xfer->c_ata_c.r_st_bmask = 0; 1628 xfer->c_ata_c.r_st_pmask = 0; 1629 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1630 xfer->c_ata_c.flags = AT_WAIT; 1631 if (bits & DKCACHE_WRITE) 1632 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_EN; 1633 else 1634 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_DS; 1635 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1636 aprint_error_dev(dksc->sc_dev, 1637 "wd_setcache command not complete\n"); 1638 error = EIO; 1639 goto out; 1640 } 1641 1642 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1643 char sbuf[sizeof(at_errbits) + 64]; 1644 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1645 aprint_error_dev(dksc->sc_dev, "wd_setcache: status=%s\n", sbuf); 1646 error = EIO; 1647 goto out; 1648 } 1649 1650 error = 0; 1651 1652 out: 1653 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1654 ata_channel_start(wd->drvp->chnl_softc, wd->drvp->drive); 1655 return error; 1656 } 1657 1658 static int 1659 wd_standby(struct wd_softc *wd, int flags) 1660 { 1661 struct dk_softc *dksc = &wd->sc_dksc; 1662 struct ata_xfer *xfer; 1663 int error; 1664 1665 xfer = ata_get_xfer(wd->drvp->chnl_softc); 1666 if (xfer == NULL) 1667 return EINTR; 1668 1669 xfer->c_ata_c.r_command = WDCC_STANDBY_IMMED; 1670 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1671 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1672 xfer->c_ata_c.flags = flags; 1673 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1674 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1675 aprint_error_dev(dksc->sc_dev, 1676 "standby immediate command didn't complete\n"); 1677 error = EIO; 1678 goto out; 1679 } 1680 if (xfer->c_ata_c.flags & AT_ERROR) { 1681 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1682 /* command not supported */ 1683 error = ENODEV; 1684 goto out; 1685 } 1686 } 1687 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1688 char sbuf[sizeof(at_errbits) + 64]; 1689 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1690 aprint_error_dev(dksc->sc_dev, "wd_standby: status=%s\n", sbuf); 1691 error = EIO; 1692 goto out; 1693 } 1694 error = 0; 1695 1696 out: 1697 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1698 /* drive is supposed to go idle, do not call ata_channel_start() */ 1699 return error; 1700 } 1701 1702 int 1703 wd_flushcache(struct wd_softc *wd, int flags, bool start) 1704 { 1705 struct dk_softc *dksc = &wd->sc_dksc; 1706 struct ata_xfer *xfer; 1707 int error; 1708 1709 /* 1710 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1711 * only ATA-2 and still support it. 1712 */ 1713 if (wd->drvp->ata_vers < 4 && 1714 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1715 wd->sc_params.atap_cmd_set2 == 0xffff)) 1716 return ENODEV; 1717 1718 mutex_enter(&wd->sc_lock); 1719 SET(wd->sc_flags, WDF_FLUSH_PEND); 1720 mutex_exit(&wd->sc_lock); 1721 1722 xfer = ata_get_xfer(wd->drvp->chnl_softc); 1723 1724 mutex_enter(&wd->sc_lock); 1725 CLR(wd->sc_flags, WDF_FLUSH_PEND); 1726 mutex_exit(&wd->sc_lock); 1727 1728 if (xfer == NULL) { 1729 error = EINTR; 1730 goto out; 1731 } 1732 1733 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1734 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) { 1735 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1736 flags |= AT_LBA48; 1737 } else 1738 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE; 1739 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1740 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1741 xfer->c_ata_c.flags = flags | AT_READREG; 1742 xfer->c_ata_c.timeout = 300000; /* 5m timeout */ 1743 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1744 aprint_error_dev(dksc->sc_dev, 1745 "flush cache command didn't complete\n"); 1746 error = EIO; 1747 goto out_xfer; 1748 } 1749 if (xfer->c_ata_c.flags & AT_ERROR) { 1750 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1751 /* command not supported */ 1752 error = ENODEV; 1753 goto out_xfer; 1754 } 1755 } 1756 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1757 char sbuf[sizeof(at_errbits) + 64]; 1758 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1759 aprint_error_dev(dksc->sc_dev, "wd_flushcache: status=%s\n", 1760 sbuf); 1761 error = EIO; 1762 goto out_xfer; 1763 } 1764 error = 0; 1765 1766 out_xfer: 1767 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1768 1769 out: 1770 /* kick queue processing blocked while waiting for flush xfer */ 1771 if (start) 1772 ata_channel_start(wd->drvp->chnl_softc, wd->drvp->drive); 1773 1774 return error; 1775 } 1776 1777 static int 1778 wd_trim(struct wd_softc *wd, daddr_t bno, long size) 1779 { 1780 struct dk_softc *dksc = &wd->sc_dksc; 1781 struct ata_xfer *xfer; 1782 int error; 1783 unsigned char *req; 1784 1785 xfer = ata_get_xfer(wd->drvp->chnl_softc); 1786 if (xfer == NULL) 1787 return EINTR; 1788 1789 req = kmem_zalloc(512, KM_SLEEP); 1790 req[0] = bno & 0xff; 1791 req[1] = (bno >> 8) & 0xff; 1792 req[2] = (bno >> 16) & 0xff; 1793 req[3] = (bno >> 24) & 0xff; 1794 req[4] = (bno >> 32) & 0xff; 1795 req[5] = (bno >> 40) & 0xff; 1796 req[6] = size & 0xff; 1797 req[7] = (size >> 8) & 0xff; 1798 1799 xfer->c_ata_c.r_command = ATA_DATA_SET_MANAGEMENT; 1800 xfer->c_ata_c.r_count = 1; 1801 xfer->c_ata_c.r_features = ATA_SUPPORT_DSM_TRIM; 1802 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1803 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1804 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1805 xfer->c_ata_c.data = req; 1806 xfer->c_ata_c.bcount = 512; 1807 xfer->c_ata_c.flags |= AT_WRITE | AT_WAIT; 1808 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1809 aprint_error_dev(dksc->sc_dev, 1810 "trim command didn't complete\n"); 1811 kmem_free(req, 512); 1812 error = EIO; 1813 goto out; 1814 } 1815 kmem_free(req, 512); 1816 if (xfer->c_ata_c.flags & AT_ERROR) { 1817 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1818 /* command not supported */ 1819 error = ENODEV; 1820 goto out; 1821 } 1822 } 1823 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1824 char sbuf[sizeof(at_errbits) + 64]; 1825 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1826 aprint_error_dev(dksc->sc_dev, "wd_trim: status=%s\n", 1827 sbuf); 1828 error = EIO; 1829 goto out; 1830 } 1831 error = 0; 1832 1833 out: 1834 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1835 ata_channel_start(wd->drvp->chnl_softc, wd->drvp->drive); 1836 return error; 1837 } 1838 1839 bool 1840 wd_shutdown(device_t dev, int how) 1841 { 1842 struct wd_softc *wd = device_private(dev); 1843 1844 /* the adapter needs to be enabled */ 1845 if (wd->atabus->ata_addref(wd->drvp)) 1846 return true; /* no need to complain */ 1847 1848 wd_flushcache(wd, AT_POLL, false); 1849 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1850 wd_standby(wd, AT_POLL); 1851 return true; 1852 } 1853 1854 /* 1855 * Allocate space for a ioctl queue structure. Mostly taken from 1856 * scsipi_ioctl.c 1857 */ 1858 struct wd_ioctl * 1859 wi_get(struct wd_softc *wd) 1860 { 1861 struct wd_ioctl *wi; 1862 1863 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1864 wi->wi_softc = wd; 1865 buf_init(&wi->wi_bp); 1866 1867 return (wi); 1868 } 1869 1870 /* 1871 * Free an ioctl structure and remove it from our list 1872 */ 1873 1874 void 1875 wi_free(struct wd_ioctl *wi) 1876 { 1877 buf_destroy(&wi->wi_bp); 1878 free(wi, M_TEMP); 1879 } 1880 1881 /* 1882 * Find a wd_ioctl structure based on the struct buf. 1883 */ 1884 1885 struct wd_ioctl * 1886 wi_find(struct buf *bp) 1887 { 1888 return container_of(bp, struct wd_ioctl, wi_bp); 1889 } 1890 1891 static uint 1892 wi_sector_size(const struct wd_ioctl * const wi) 1893 { 1894 switch (wi->wi_atareq.command) { 1895 case WDCC_READ: 1896 case WDCC_WRITE: 1897 case WDCC_READMULTI: 1898 case WDCC_WRITEMULTI: 1899 case WDCC_READDMA: 1900 case WDCC_WRITEDMA: 1901 case WDCC_READ_EXT: 1902 case WDCC_WRITE_EXT: 1903 case WDCC_READMULTI_EXT: 1904 case WDCC_WRITEMULTI_EXT: 1905 case WDCC_READDMA_EXT: 1906 case WDCC_WRITEDMA_EXT: 1907 case WDCC_READ_FPDMA_QUEUED: 1908 case WDCC_WRITE_FPDMA_QUEUED: 1909 return wi->wi_softc->sc_blksize; 1910 default: 1911 return 512; 1912 } 1913 } 1914 1915 /* 1916 * Ioctl pseudo strategy routine 1917 * 1918 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1919 * happens here is: 1920 * 1921 * - wdioctl() queues a wd_ioctl structure. 1922 * 1923 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1924 * user space I/O is required. If physio() is called, physio() eventually 1925 * calls wdioctlstrategy(). 1926 * 1927 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1928 * to perform the actual command 1929 * 1930 * The reason for the use of the pseudo strategy routine is because 1931 * when doing I/O to/from user space, physio _really_ wants to be in 1932 * the loop. We could put the entire buffer into the ioctl request 1933 * structure, but that won't scale if we want to do things like download 1934 * microcode. 1935 */ 1936 1937 void 1938 wdioctlstrategy(struct buf *bp) 1939 { 1940 struct wd_ioctl *wi; 1941 struct ata_xfer *xfer; 1942 int error = 0; 1943 1944 wi = wi_find(bp); 1945 if (wi == NULL) { 1946 printf("wdioctlstrategy: " 1947 "No matching ioctl request found in queue\n"); 1948 error = EINVAL; 1949 goto out2; 1950 } 1951 1952 xfer = ata_get_xfer(wi->wi_softc->drvp->chnl_softc); 1953 if (xfer == NULL) { 1954 error = EINTR; 1955 goto out2; 1956 } 1957 1958 /* 1959 * Abort if physio broke up the transfer 1960 */ 1961 1962 if (bp->b_bcount != wi->wi_atareq.datalen) { 1963 printf("physio split wd ioctl request... cannot proceed\n"); 1964 error = EIO; 1965 goto out; 1966 } 1967 1968 /* 1969 * Abort if we didn't get a buffer size that was a multiple of 1970 * our sector size (or overflows CHS/LBA28 sector count) 1971 */ 1972 1973 if ((bp->b_bcount % wi_sector_size(wi)) != 0 || 1974 (bp->b_bcount / wi_sector_size(wi)) >= 1975 (1 << NBBY)) { 1976 error = EINVAL; 1977 goto out; 1978 } 1979 1980 /* 1981 * Make sure a timeout was supplied in the ioctl request 1982 */ 1983 1984 if (wi->wi_atareq.timeout == 0) { 1985 error = EINVAL; 1986 goto out; 1987 } 1988 1989 if (wi->wi_atareq.flags & ATACMD_READ) 1990 xfer->c_ata_c.flags |= AT_READ; 1991 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1992 xfer->c_ata_c.flags |= AT_WRITE; 1993 1994 if (wi->wi_atareq.flags & ATACMD_READREG) 1995 xfer->c_ata_c.flags |= AT_READREG; 1996 1997 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 1998 xfer->c_ata_c.flags |= AT_LBA; 1999 2000 xfer->c_ata_c.flags |= AT_WAIT; 2001 2002 xfer->c_ata_c.timeout = wi->wi_atareq.timeout; 2003 xfer->c_ata_c.r_command = wi->wi_atareq.command; 2004 xfer->c_ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2005 (wi->wi_atareq.cylinder << 8) | 2006 wi->wi_atareq.sec_num; 2007 xfer->c_ata_c.r_count = wi->wi_atareq.sec_count; 2008 xfer->c_ata_c.r_features = wi->wi_atareq.features; 2009 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 2010 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 2011 xfer->c_ata_c.data = wi->wi_bp.b_data; 2012 xfer->c_ata_c.bcount = wi->wi_bp.b_bcount; 2013 2014 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, xfer) 2015 != ATACMD_COMPLETE) { 2016 wi->wi_atareq.retsts = ATACMD_ERROR; 2017 error = EIO; 2018 goto out; 2019 } 2020 2021 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2022 if (xfer->c_ata_c.flags & AT_ERROR) { 2023 wi->wi_atareq.retsts = ATACMD_ERROR; 2024 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2025 } else if (xfer->c_ata_c.flags & AT_DF) 2026 wi->wi_atareq.retsts = ATACMD_DF; 2027 else 2028 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2029 } else { 2030 wi->wi_atareq.retsts = ATACMD_OK; 2031 if (wi->wi_atareq.flags & ATACMD_READREG) { 2032 wi->wi_atareq.command = xfer->c_ata_c.r_status; 2033 wi->wi_atareq.features = xfer->c_ata_c.r_error; 2034 wi->wi_atareq.sec_count = xfer->c_ata_c.r_count; 2035 wi->wi_atareq.sec_num = xfer->c_ata_c.r_lba & 0xff; 2036 wi->wi_atareq.head = (xfer->c_ata_c.r_device & 0xf0) | 2037 ((xfer->c_ata_c.r_lba >> 24) & 0x0f); 2038 wi->wi_atareq.cylinder = 2039 (xfer->c_ata_c.r_lba >> 8) & 0xffff; 2040 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2041 } 2042 } 2043 2044 out: 2045 ata_free_xfer(wi->wi_softc->drvp->chnl_softc, xfer); 2046 ata_channel_start(wi->wi_softc->drvp->chnl_softc, 2047 wi->wi_softc->drvp->drive); 2048 out2: 2049 bp->b_error = error; 2050 if (error) 2051 bp->b_resid = bp->b_bcount; 2052 biodone(bp); 2053 } 2054 2055 static void 2056 wd_sysctl_attach(struct wd_softc *wd) 2057 { 2058 struct dk_softc *dksc = &wd->sc_dksc; 2059 const struct sysctlnode *node; 2060 int error; 2061 2062 /* sysctl set-up */ 2063 if (sysctl_createv(&wd->nodelog, 0, NULL, &node, 2064 0, CTLTYPE_NODE, dksc->sc_xname, 2065 SYSCTL_DESCR("wd driver settings"), 2066 NULL, 0, NULL, 0, 2067 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 2068 aprint_error_dev(dksc->sc_dev, 2069 "could not create %s.%s sysctl node\n", 2070 "hw", dksc->sc_xname); 2071 return; 2072 } 2073 2074 wd->drv_max_tags = ATA_MAX_OPENINGS; 2075 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2076 CTLFLAG_READWRITE, CTLTYPE_INT, "max_tags", 2077 SYSCTL_DESCR("max number of NCQ tags to use"), 2078 NULL, 0, &wd->drv_max_tags, 0, 2079 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2080 != 0) { 2081 aprint_error_dev(dksc->sc_dev, 2082 "could not create %s.%s.max_tags sysctl - error %d\n", 2083 "hw", dksc->sc_xname, error); 2084 return; 2085 } 2086 2087 wd->drv_ncq = true; 2088 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2089 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq", 2090 SYSCTL_DESCR("use NCQ if supported"), 2091 NULL, 0, &wd->drv_ncq, 0, 2092 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2093 != 0) { 2094 aprint_error_dev(dksc->sc_dev, 2095 "could not create %s.%s.use_ncq sysctl - error %d\n", 2096 "hw", dksc->sc_xname, error); 2097 return; 2098 } 2099 2100 wd->drv_ncq_prio = false; 2101 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2102 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq_prio", 2103 SYSCTL_DESCR("use NCQ PRIORITY if supported"), 2104 NULL, 0, &wd->drv_ncq_prio, 0, 2105 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2106 != 0) { 2107 aprint_error_dev(dksc->sc_dev, 2108 "could not create %s.%s.use_ncq_prio sysctl - error %d\n", 2109 "hw", dksc->sc_xname, error); 2110 return; 2111 } 2112 2113 #ifdef WD_CHAOS_MONKEY 2114 wd->drv_chaos_freq = 0; 2115 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2116 CTLFLAG_READWRITE, CTLTYPE_INT, "chaos_freq", 2117 SYSCTL_DESCR("simulated bio read error rate"), 2118 NULL, 0, &wd->drv_chaos_freq, 0, 2119 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2120 != 0) { 2121 aprint_error_dev(dksc->sc_dev, 2122 "could not create %s.%s.chaos_freq sysctl - error %d\n", 2123 "hw", dksc->sc_xname, error); 2124 return; 2125 } 2126 2127 wd->drv_chaos_cnt = 0; 2128 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2129 CTLFLAG_READONLY, CTLTYPE_INT, "chaos_cnt", 2130 SYSCTL_DESCR("number of processed bio reads"), 2131 NULL, 0, &wd->drv_chaos_cnt, 0, 2132 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2133 != 0) { 2134 aprint_error_dev(dksc->sc_dev, 2135 "could not create %s.%s.chaos_cnt sysctl - error %d\n", 2136 "hw", dksc->sc_xname, error); 2137 return; 2138 } 2139 #endif 2140 2141 } 2142 2143 static void 2144 wd_sysctl_detach(struct wd_softc *wd) 2145 { 2146 sysctl_teardown(&wd->nodelog); 2147 } 2148 2149
Indexes created Sat Sep 27 22:09:54 GMT 2025