1 /* $NetBSD: wd.c,v 1.220 2002/01/13 17:24:30 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.220 2002/01/13 17:24:30 christos Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/uio.h> 86 #include <sys/malloc.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/disk.h> 90 #include <sys/syslog.h> 91 #include <sys/proc.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <machine/intr.h> 98 #include <machine/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #define WAITTIME (4 * hz) /* time to wait for a completion */ 108 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 109 #define WDIORETRIES 5 /* number of retries before giving up */ 110 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 111 112 #define WDUNIT(dev) DISKUNIT(dev) 113 #define WDPART(dev) DISKPART(dev) 114 #define WDMINOR(unit, part) DISKMINOR(unit, part) 115 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 116 117 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 118 119 #define DEBUG_INTR 0x01 120 #define DEBUG_XFERS 0x02 121 #define DEBUG_STATUS 0x04 122 #define DEBUG_FUNCS 0x08 123 #define DEBUG_PROBE 0x10 124 #ifdef WDCDEBUG 125 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 126 #define WDCDEBUG_PRINT(args, level) \ 127 if (wdcdebug_wd_mask & (level)) \ 128 printf args 129 #else 130 #define WDCDEBUG_PRINT(args, level) 131 #endif 132 133 struct wd_softc { 134 /* General disk infos */ 135 struct device sc_dev; 136 struct disk sc_dk; 137 struct buf_queue sc_q; 138 struct callout sc_restart_ch; 139 /* IDE disk soft states */ 140 struct ata_bio sc_wdc_bio; /* current transfer */ 141 struct buf *sc_bp; /* buf being transfered */ 142 void *wdc_softc; /* pointer to our parent */ 143 struct ata_drive_datas *drvp; /* Our controller's infos */ 144 const struct ata_bustype *atabus; 145 int openings; 146 struct ataparams sc_params;/* drive characteistics found */ 147 int sc_flags; 148 #define WDF_LOCKED 0x001 149 #define WDF_WANTED 0x002 150 #define WDF_WLABEL 0x004 /* label is writable */ 151 #define WDF_LABELLING 0x008 /* writing label */ 152 /* 153 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 154 * more fully implemented. 155 */ 156 #define WDF_LOADED 0x010 /* parameters loaded */ 157 #define WDF_WAIT 0x020 /* waiting for resources */ 158 #define WDF_LBA 0x040 /* using LBA mode */ 159 #define WDF_KLABEL 0x080 /* retain label after 'full' close */ 160 #define WDF_LBA48 0x100 /* using 48-bit LBA mode */ 161 int sc_capacity; 162 int cyl; /* actual drive parameters */ 163 int heads; 164 int sectors; 165 int retries; /* number of xfer retry */ 166 167 void *sc_sdhook; /* our shutdown hook */ 168 169 #if NRND > 0 170 rndsource_element_t rnd_source; 171 #endif 172 }; 173 174 #define sc_drive sc_wdc_bio.drive 175 #define sc_mode sc_wdc_bio.mode 176 #define sc_multi sc_wdc_bio.multi 177 #define sc_badsect sc_wdc_bio.badsect 178 179 int wdprobe __P((struct device *, struct cfdata *, void *)); 180 void wdattach __P((struct device *, struct device *, void *)); 181 int wddetach __P((struct device *, int)); 182 int wdactivate __P((struct device *, enum devact)); 183 int wdprint __P((void *, char *)); 184 void wdperror __P((struct ata_drive_datas *, int, char *)); 185 186 struct cfattach wd_ca = { 187 sizeof(struct wd_softc), wdprobe, wdattach, wddetach, wdactivate 188 }; 189 190 extern struct cfdriver wd_cd; 191 192 /* 193 * Glue necessary to hook WDCIOCCOMMAND into physio 194 */ 195 196 struct wd_ioctl { 197 LIST_ENTRY(wd_ioctl) wi_list; 198 struct buf wi_bp; 199 struct uio wi_uio; 200 struct iovec wi_iov; 201 atareq_t wi_atareq; 202 struct wd_softc *wi_softc; 203 }; 204 205 LIST_HEAD(, wd_ioctl) wi_head; 206 207 struct wd_ioctl *wi_find __P((struct buf *)); 208 void wi_free __P((struct wd_ioctl *)); 209 struct wd_ioctl *wi_get __P((void)); 210 void wdioctlstrategy __P((struct buf *)); 211 212 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 213 void wdgetdisklabel __P((struct wd_softc *)); 214 void wdstrategy __P((struct buf *)); 215 void wdstart __P((void *)); 216 void __wdstart __P((struct wd_softc*, struct buf *)); 217 void wdrestart __P((void*)); 218 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 219 void wd_flushcache __P((struct wd_softc *, int)); 220 void wd_shutdown __P((void*)); 221 222 struct dkdriver wddkdriver = { wdstrategy }; 223 224 /* XXX: these should go elsewhere */ 225 cdev_decl(wd); 226 bdev_decl(wd); 227 228 #ifdef HAS_BAD144_HANDLING 229 static void bad144intern __P((struct wd_softc *)); 230 #endif 231 int wdlock __P((struct wd_softc *)); 232 void wdunlock __P((struct wd_softc *)); 233 234 int 235 wdprobe(parent, match, aux) 236 struct device *parent; 237 struct cfdata *match; 238 239 void *aux; 240 { 241 struct ata_device *adev = aux; 242 243 if (adev == NULL) 244 return 0; 245 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 246 return 0; 247 248 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 249 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 250 return 0; 251 252 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 253 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 254 return 0; 255 return 1; 256 } 257 258 void 259 wdattach(parent, self, aux) 260 struct device *parent, *self; 261 void *aux; 262 { 263 struct wd_softc *wd = (void *)self; 264 struct ata_device *adev= aux; 265 int i, blank; 266 char buf[41], pbuf[9], c, *p, *q; 267 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 268 269 callout_init(&wd->sc_restart_ch); 270 BUFQ_INIT(&wd->sc_q); 271 272 wd->atabus = adev->adev_bustype; 273 wd->openings = adev->adev_openings; 274 wd->drvp = adev->adev_drv_data;; 275 wd->wdc_softc = parent; 276 /* give back our softc to our caller */ 277 wd->drvp->drv_softc = &wd->sc_dev; 278 279 /* read our drive info */ 280 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 281 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 282 return; 283 } 284 285 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 286 i < sizeof(wd->sc_params.atap_model); i++) { 287 c = *p++; 288 if (c == '\0') 289 break; 290 if (c != ' ') { 291 if (blank) { 292 *q++ = ' '; 293 blank = 0; 294 } 295 *q++ = c; 296 } else 297 blank = 1; 298 } 299 *q++ = '\0'; 300 301 printf(": <%s>\n", buf); 302 303 if ((wd->sc_params.atap_multi & 0xff) > 1) { 304 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 305 } else { 306 wd->sc_multi = 1; 307 } 308 309 printf("%s: drive supports %d-sector PIO transfers,", 310 wd->sc_dev.dv_xname, wd->sc_multi); 311 312 /* 48-bit LBA addressing */ 313 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 314 wd->sc_flags |= WDF_LBA48; 315 316 /* Prior to ATA-4, LBA was optional. */ 317 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 318 wd->sc_flags |= WDF_LBA; 319 #if 0 320 /* ATA-4 requires LBA. */ 321 if (wd->sc_params.atap_ataversion != 0xffff && 322 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 323 wd->sc_flags |= WDF_LBA; 324 #endif 325 326 if ((wd->sc_flags & WDF_LBA48) != 0) { 327 printf(" LBA48 addressing\n"); 328 wd->sc_capacity = 329 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 330 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 331 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 332 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 333 } else if ((wd->sc_flags & WDF_LBA) != 0) { 334 printf(" LBA addressing\n"); 335 wd->sc_capacity = 336 (wd->sc_params.atap_capacity[1] << 16) | 337 wd->sc_params.atap_capacity[0]; 338 } else { 339 printf(" chs addressing\n"); 340 wd->sc_capacity = 341 wd->sc_params.atap_cylinders * 342 wd->sc_params.atap_heads * 343 wd->sc_params.atap_sectors; 344 } 345 format_bytes(pbuf, sizeof(pbuf), 346 (u_int64_t)wd->sc_capacity * DEV_BSIZE); 347 printf("%s: %s, %d cyl, %d head, %d sec, " 348 "%d bytes/sect x %d sectors\n", 349 self->dv_xname, pbuf, wd->sc_params.atap_cylinders, 350 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 351 DEV_BSIZE, wd->sc_capacity); 352 353 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 354 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 355 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 356 /* 357 * Initialize and attach the disk structure. 358 */ 359 wd->sc_dk.dk_driver = &wddkdriver; 360 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 361 disk_attach(&wd->sc_dk); 362 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 363 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 364 if (wd->sc_sdhook == NULL) 365 printf("%s: WARNING: unable to establish shutdown hook\n", 366 wd->sc_dev.dv_xname); 367 #if NRND > 0 368 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 369 RND_TYPE_DISK, 0); 370 #endif 371 } 372 373 int 374 wdactivate(self, act) 375 struct device *self; 376 enum devact act; 377 { 378 int rv = 0; 379 380 switch (act) { 381 case DVACT_ACTIVATE: 382 rv = EOPNOTSUPP; 383 break; 384 385 case DVACT_DEACTIVATE: 386 /* 387 * Nothing to do; we key off the device's DVF_ACTIVATE. 388 */ 389 break; 390 } 391 return (rv); 392 } 393 394 int 395 wddetach(self, flags) 396 struct device *self; 397 int flags; 398 { 399 struct wd_softc *sc = (struct wd_softc *)self; 400 struct buf *bp; 401 int s, bmaj, cmaj, i, mn; 402 403 /* locate the major number */ 404 for (bmaj = 0; bmaj < nblkdev; bmaj++) 405 if (bdevsw[bmaj].d_open == wdopen) 406 break; 407 for (cmaj = 0; cmaj < nchrdev; cmaj++) 408 if (cdevsw[cmaj].d_open == wdopen) 409 break; 410 411 s = splbio(); 412 413 /* Kill off any queued buffers. */ 414 while ((bp = BUFQ_FIRST(&sc->sc_q)) != NULL) { 415 BUFQ_REMOVE(&sc->sc_q, bp); 416 bp->b_error = EIO; 417 bp->b_flags |= B_ERROR; 418 bp->b_resid = bp->b_bcount; 419 biodone(bp); 420 } 421 422 splx(s); 423 424 /* Nuke the vnodes for any open instances. */ 425 for (i = 0; i < MAXPARTITIONS; i++) { 426 mn = WDMINOR(self->dv_unit, i); 427 vdevgone(bmaj, mn, mn, VBLK); 428 vdevgone(cmaj, mn, mn, VCHR); 429 } 430 431 /* Detach disk. */ 432 disk_detach(&sc->sc_dk); 433 434 /* Get rid of the shutdown hook. */ 435 if (sc->sc_sdhook != NULL) 436 shutdownhook_disestablish(sc->sc_sdhook); 437 438 #if NRND > 0 439 /* Unhook the entropy source. */ 440 rnd_detach_source(&sc->rnd_source); 441 #endif 442 443 return (0); 444 } 445 446 /* 447 * Read/write routine for a buffer. Validates the arguments and schedules the 448 * transfer. Does not wait for the transfer to complete. 449 */ 450 void 451 wdstrategy(bp) 452 struct buf *bp; 453 { 454 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 455 struct disklabel *lp = wd->sc_dk.dk_label; 456 daddr_t blkno; 457 int s; 458 459 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 460 DEBUG_XFERS); 461 462 /* Valid request? */ 463 if (bp->b_blkno < 0 || 464 (bp->b_bcount % lp->d_secsize) != 0 || 465 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 466 bp->b_error = EINVAL; 467 goto bad; 468 } 469 470 /* If device invalidated (e.g. media change, door open), error. */ 471 if ((wd->sc_flags & WDF_LOADED) == 0) { 472 bp->b_error = EIO; 473 goto bad; 474 } 475 476 /* If it's a null transfer, return immediately. */ 477 if (bp->b_bcount == 0) 478 goto done; 479 480 /* 481 * Do bounds checking, adjust transfer. if error, process. 482 * If end of partition, just return. 483 */ 484 if (WDPART(bp->b_dev) != RAW_PART && 485 bounds_check_with_label(bp, wd->sc_dk.dk_label, 486 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 487 goto done; 488 489 /* 490 * Now convert the block number to absolute and put it in 491 * terms of the device's logical block size. 492 */ 493 if (lp->d_secsize >= DEV_BSIZE) 494 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 495 else 496 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 497 498 if (WDPART(bp->b_dev) != RAW_PART) 499 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 500 501 bp->b_rawblkno = blkno; 502 503 /* Queue transfer on drive, activate drive and controller if idle. */ 504 s = splbio(); 505 disksort_blkno(&wd->sc_q, bp); 506 wdstart(wd); 507 splx(s); 508 return; 509 bad: 510 bp->b_flags |= B_ERROR; 511 done: 512 /* Toss transfer; we're done early. */ 513 bp->b_resid = bp->b_bcount; 514 biodone(bp); 515 } 516 517 /* 518 * Queue a drive for I/O. 519 */ 520 void 521 wdstart(arg) 522 void *arg; 523 { 524 struct wd_softc *wd = arg; 525 struct buf *bp = NULL; 526 527 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 528 DEBUG_XFERS); 529 while (wd->openings > 0) { 530 531 /* Is there a buf for us ? */ 532 if ((bp = BUFQ_FIRST(&wd->sc_q)) == NULL) 533 return; 534 BUFQ_REMOVE(&wd->sc_q, bp); 535 536 /* 537 * Make the command. First lock the device 538 */ 539 wd->openings--; 540 541 wd->retries = 0; 542 __wdstart(wd, bp); 543 } 544 } 545 546 void 547 __wdstart(wd, bp) 548 struct wd_softc *wd; 549 struct buf *bp; 550 { 551 552 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 553 wd->sc_wdc_bio.blkdone =0; 554 wd->sc_bp = bp; 555 /* 556 * If we're retrying, retry in single-sector mode. This will give us 557 * the sector number of the problem, and will eventually allow the 558 * transfer to succeed. 559 */ 560 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 561 wd->sc_wdc_bio.flags = ATA_SINGLE; 562 else 563 wd->sc_wdc_bio.flags = 0; 564 if (wd->sc_flags & WDF_LBA48) 565 wd->sc_wdc_bio.flags |= ATA_LBA48; 566 if (wd->sc_flags & WDF_LBA) 567 wd->sc_wdc_bio.flags |= ATA_LBA; 568 if (bp->b_flags & B_READ) 569 wd->sc_wdc_bio.flags |= ATA_READ; 570 wd->sc_wdc_bio.bcount = bp->b_bcount; 571 wd->sc_wdc_bio.databuf = bp->b_data; 572 /* Instrumentation. */ 573 disk_busy(&wd->sc_dk); 574 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 575 case WDC_TRY_AGAIN: 576 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 577 break; 578 case WDC_QUEUED: 579 case WDC_COMPLETE: 580 break; 581 default: 582 panic("__wdstart: bad return code from ata_bio()"); 583 } 584 } 585 586 void 587 wddone(v) 588 void *v; 589 { 590 struct wd_softc *wd = v; 591 struct buf *bp = wd->sc_bp; 592 char buf[256], *errbuf = buf; 593 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 594 DEBUG_XFERS); 595 596 if (bp == NULL) 597 return; 598 bp->b_resid = wd->sc_wdc_bio.bcount; 599 errbuf[0] = '\0'; 600 switch (wd->sc_wdc_bio.error) { 601 case ERR_DMA: 602 errbuf = "DMA error"; 603 goto retry; 604 case ERR_DF: 605 errbuf = "device fault"; 606 goto retry; 607 case TIMEOUT: 608 errbuf = "device timeout"; 609 goto retry; 610 case ERROR: 611 /* Don't care about media change bits */ 612 if (wd->sc_wdc_bio.r_error != 0 && 613 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 614 goto noerror; 615 wdperror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 616 retry: /* Just reset and retry. Can we do more ? */ 617 wd->atabus->ata_reset_channel(wd->drvp); 618 diskerr(bp, "wd", errbuf, LOG_PRINTF, 619 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 620 if (wd->retries++ < WDIORETRIES) { 621 printf(", retrying\n"); 622 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 623 wdrestart, wd); 624 return; 625 } 626 printf("\n"); 627 bp->b_flags |= B_ERROR; 628 bp->b_error = EIO; 629 break; 630 case NOERROR: 631 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 632 printf("%s: soft error (corrected)\n", 633 wd->sc_dev.dv_xname); 634 break; 635 case ERR_NODEV: 636 bp->b_flags |= B_ERROR; 637 bp->b_error = EIO; 638 break; 639 } 640 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 641 #if NRND > 0 642 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 643 #endif 644 biodone(bp); 645 wd->openings++; 646 wdstart(wd); 647 } 648 649 void 650 wdrestart(v) 651 void *v; 652 { 653 struct wd_softc *wd = v; 654 struct buf *bp = wd->sc_bp; 655 int s; 656 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 657 DEBUG_XFERS); 658 659 s = splbio(); 660 __wdstart(v, bp); 661 splx(s); 662 } 663 664 int 665 wdread(dev, uio, flags) 666 dev_t dev; 667 struct uio *uio; 668 int flags; 669 { 670 671 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 672 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 673 } 674 675 int 676 wdwrite(dev, uio, flags) 677 dev_t dev; 678 struct uio *uio; 679 int flags; 680 { 681 682 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 683 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 684 } 685 686 /* 687 * Wait interruptibly for an exclusive lock. 688 * 689 * XXX 690 * Several drivers do this; it should be abstracted and made MP-safe. 691 */ 692 int 693 wdlock(wd) 694 struct wd_softc *wd; 695 { 696 int error; 697 int s; 698 699 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 700 701 s = splbio(); 702 703 while ((wd->sc_flags & WDF_LOCKED) != 0) { 704 wd->sc_flags |= WDF_WANTED; 705 if ((error = tsleep(wd, PRIBIO | PCATCH, 706 "wdlck", 0)) != 0) { 707 splx(s); 708 return error; 709 } 710 } 711 wd->sc_flags |= WDF_LOCKED; 712 splx(s); 713 return 0; 714 } 715 716 /* 717 * Unlock and wake up any waiters. 718 */ 719 void 720 wdunlock(wd) 721 struct wd_softc *wd; 722 { 723 724 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 725 726 wd->sc_flags &= ~WDF_LOCKED; 727 if ((wd->sc_flags & WDF_WANTED) != 0) { 728 wd->sc_flags &= ~WDF_WANTED; 729 wakeup(wd); 730 } 731 } 732 733 int 734 wdopen(dev, flag, fmt, p) 735 dev_t dev; 736 int flag, fmt; 737 struct proc *p; 738 { 739 struct wd_softc *wd; 740 int part, error; 741 742 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 743 wd = device_lookup(&wd_cd, WDUNIT(dev)); 744 if (wd == NULL) 745 return (ENXIO); 746 747 /* 748 * If this is the first open of this device, add a reference 749 * to the adapter. 750 */ 751 if (wd->sc_dk.dk_openmask == 0 && 752 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 753 return (error); 754 755 if ((error = wdlock(wd)) != 0) 756 goto bad4; 757 758 if (wd->sc_dk.dk_openmask != 0) { 759 /* 760 * If any partition is open, but the disk has been invalidated, 761 * disallow further opens. 762 */ 763 if ((wd->sc_flags & WDF_LOADED) == 0) { 764 error = EIO; 765 goto bad3; 766 } 767 } else { 768 if ((wd->sc_flags & WDF_LOADED) == 0) { 769 wd->sc_flags |= WDF_LOADED; 770 771 /* Load the physical device parameters. */ 772 wd_get_params(wd, AT_WAIT, &wd->sc_params); 773 774 /* Load the partition info if not already loaded. */ 775 wdgetdisklabel(wd); 776 } 777 } 778 779 part = WDPART(dev); 780 781 /* Check that the partition exists. */ 782 if (part != RAW_PART && 783 (part >= wd->sc_dk.dk_label->d_npartitions || 784 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 785 error = ENXIO; 786 goto bad; 787 } 788 789 /* Insure only one open at a time. */ 790 switch (fmt) { 791 case S_IFCHR: 792 wd->sc_dk.dk_copenmask |= (1 << part); 793 break; 794 case S_IFBLK: 795 wd->sc_dk.dk_bopenmask |= (1 << part); 796 break; 797 } 798 wd->sc_dk.dk_openmask = 799 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 800 801 wdunlock(wd); 802 return 0; 803 804 bad: 805 if (wd->sc_dk.dk_openmask == 0) { 806 } 807 808 bad3: 809 wdunlock(wd); 810 bad4: 811 if (wd->sc_dk.dk_openmask == 0) 812 wd->atabus->ata_delref(wd->drvp); 813 return error; 814 } 815 816 int 817 wdclose(dev, flag, fmt, p) 818 dev_t dev; 819 int flag, fmt; 820 struct proc *p; 821 { 822 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 823 int part = WDPART(dev); 824 int error; 825 826 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 827 if ((error = wdlock(wd)) != 0) 828 return error; 829 830 switch (fmt) { 831 case S_IFCHR: 832 wd->sc_dk.dk_copenmask &= ~(1 << part); 833 break; 834 case S_IFBLK: 835 wd->sc_dk.dk_bopenmask &= ~(1 << part); 836 break; 837 } 838 wd->sc_dk.dk_openmask = 839 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 840 841 if (wd->sc_dk.dk_openmask == 0) { 842 wd_flushcache(wd, AT_WAIT); 843 /* XXXX Must wait for I/O to complete! */ 844 845 if (! (wd->sc_flags & WDF_KLABEL)) 846 wd->sc_flags &= ~WDF_LOADED; 847 848 wd->atabus->ata_delref(wd->drvp); 849 } 850 851 wdunlock(wd); 852 return 0; 853 } 854 855 void 856 wdgetdefaultlabel(wd, lp) 857 struct wd_softc *wd; 858 struct disklabel *lp; 859 { 860 861 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 862 memset(lp, 0, sizeof(struct disklabel)); 863 864 lp->d_secsize = DEV_BSIZE; 865 lp->d_ntracks = wd->sc_params.atap_heads; 866 lp->d_nsectors = wd->sc_params.atap_sectors; 867 lp->d_ncylinders = wd->sc_params.atap_cylinders; 868 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 869 870 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 871 lp->d_type = DTYPE_ST506; 872 else 873 lp->d_type = DTYPE_ESDI; 874 875 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 876 strncpy(lp->d_packname, "fictitious", 16); 877 lp->d_secperunit = wd->sc_capacity; 878 lp->d_rpm = 3600; 879 lp->d_interleave = 1; 880 lp->d_flags = 0; 881 882 lp->d_partitions[RAW_PART].p_offset = 0; 883 lp->d_partitions[RAW_PART].p_size = 884 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 885 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 886 lp->d_npartitions = RAW_PART + 1; 887 888 lp->d_magic = DISKMAGIC; 889 lp->d_magic2 = DISKMAGIC; 890 lp->d_checksum = dkcksum(lp); 891 } 892 893 /* 894 * Fabricate a default disk label, and try to read the correct one. 895 */ 896 void 897 wdgetdisklabel(wd) 898 struct wd_softc *wd; 899 { 900 struct disklabel *lp = wd->sc_dk.dk_label; 901 char *errstring; 902 903 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 904 905 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 906 907 wdgetdefaultlabel(wd, lp); 908 909 wd->sc_badsect[0] = -1; 910 911 if (wd->drvp->state > RECAL) 912 wd->drvp->drive_flags |= DRIVE_RESET; 913 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 914 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 915 if (errstring) { 916 /* 917 * This probably happened because the drive's default 918 * geometry doesn't match the DOS geometry. We 919 * assume the DOS geometry is now in the label and try 920 * again. XXX This is a kluge. 921 */ 922 if (wd->drvp->state > RECAL) 923 wd->drvp->drive_flags |= DRIVE_RESET; 924 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 925 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 926 } 927 if (errstring) { 928 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 929 return; 930 } 931 932 if (wd->drvp->state > RECAL) 933 wd->drvp->drive_flags |= DRIVE_RESET; 934 #ifdef HAS_BAD144_HANDLING 935 if ((lp->d_flags & D_BADSECT) != 0) 936 bad144intern(wd); 937 #endif 938 } 939 940 void 941 wdperror(drvp, errno, buf) 942 struct ata_drive_datas *drvp; 943 int errno; 944 char *buf; 945 { 946 static char *errstr0_3[] = {"address mark not found", 947 "track 0 not found", "aborted command", "media change requested", 948 "id not found", "media changed", "uncorrectable data error", 949 "bad block detected"}; 950 static char *errstr4_5[] = {"obsolete (address mark not found)", 951 "no media/write protected", "aborted command", 952 "media change requested", "id not found", "media changed", 953 "uncorrectable data error", "interface CRC error"}; 954 char **errstr; 955 int i; 956 char *sep = ""; 957 958 if (drvp->ata_vers >= 4) 959 errstr = errstr4_5; 960 else 961 errstr = errstr0_3; 962 963 if (errno == 0) 964 sprintf(buf, "error not notified"); 965 966 for (i = 0; i < 8; i++) { 967 if (errno & (1 << i)) { 968 buf += sprintf(buf, "%s%s", sep, errstr[i]); 969 sep = ", "; 970 } 971 } 972 } 973 974 int 975 wdioctl(dev, xfer, addr, flag, p) 976 dev_t dev; 977 u_long xfer; 978 caddr_t addr; 979 int flag; 980 struct proc *p; 981 { 982 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 983 int error; 984 #ifdef __HAVE_OLD_DISKLABEL 985 struct disklabel newlabel; 986 #endif 987 988 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 989 990 if ((wd->sc_flags & WDF_LOADED) == 0) 991 return EIO; 992 993 switch (xfer) { 994 #ifdef HAS_BAD144_HANDLING 995 case DIOCSBAD: 996 if ((flag & FWRITE) == 0) 997 return EBADF; 998 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 999 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1000 bad144intern(wd); 1001 return 0; 1002 #endif 1003 1004 case DIOCGDINFO: 1005 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1006 return 0; 1007 #ifdef __HAVE_OLD_DISKLABEL 1008 case ODIOCGDINFO: 1009 newlabel = *(wd->sc_dk.dk_label); 1010 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1011 return ENOTTY; 1012 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1013 return 0; 1014 #endif 1015 1016 case DIOCGPART: 1017 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1018 ((struct partinfo *)addr)->part = 1019 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1020 return 0; 1021 1022 case DIOCWDINFO: 1023 case DIOCSDINFO: 1024 #ifdef __HAVE_OLD_DISKLABEL 1025 case ODIOCWDINFO: 1026 case ODIOCSDINFO: 1027 #endif 1028 { 1029 struct disklabel *lp; 1030 1031 #ifdef __HAVE_OLD_DISKLABEL 1032 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1033 memset(&newlabel, 0, sizeof newlabel); 1034 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1035 lp = &newlabel; 1036 } else 1037 #endif 1038 lp = (struct disklabel *)addr; 1039 1040 if ((flag & FWRITE) == 0) 1041 return EBADF; 1042 1043 if ((error = wdlock(wd)) != 0) 1044 return error; 1045 wd->sc_flags |= WDF_LABELLING; 1046 1047 error = setdisklabel(wd->sc_dk.dk_label, 1048 lp, /*wd->sc_dk.dk_openmask : */0, 1049 wd->sc_dk.dk_cpulabel); 1050 if (error == 0) { 1051 if (wd->drvp->state > RECAL) 1052 wd->drvp->drive_flags |= DRIVE_RESET; 1053 if (xfer == DIOCWDINFO 1054 #ifdef __HAVE_OLD_DISKLABEL 1055 || xfer == ODIOCWDINFO 1056 #endif 1057 ) 1058 error = writedisklabel(WDLABELDEV(dev), 1059 wdstrategy, wd->sc_dk.dk_label, 1060 wd->sc_dk.dk_cpulabel); 1061 } 1062 1063 wd->sc_flags &= ~WDF_LABELLING; 1064 wdunlock(wd); 1065 return error; 1066 } 1067 1068 case DIOCKLABEL: 1069 if (*(int *)addr) 1070 wd->sc_flags |= WDF_KLABEL; 1071 else 1072 wd->sc_flags &= ~WDF_KLABEL; 1073 return 0; 1074 1075 case DIOCWLABEL: 1076 if ((flag & FWRITE) == 0) 1077 return EBADF; 1078 if (*(int *)addr) 1079 wd->sc_flags |= WDF_WLABEL; 1080 else 1081 wd->sc_flags &= ~WDF_WLABEL; 1082 return 0; 1083 1084 case DIOCGDEFLABEL: 1085 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1086 return 0; 1087 #ifdef __HAVE_OLD_DISKLABEL 1088 case ODIOCGDEFLABEL: 1089 wdgetdefaultlabel(wd, &newlabel); 1090 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1091 return ENOTTY; 1092 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1093 return 0; 1094 #endif 1095 1096 #ifdef notyet 1097 case DIOCWFORMAT: 1098 if ((flag & FWRITE) == 0) 1099 return EBADF; 1100 { 1101 register struct format_op *fop; 1102 struct iovec aiov; 1103 struct uio auio; 1104 1105 fop = (struct format_op *)addr; 1106 aiov.iov_base = fop->df_buf; 1107 aiov.iov_len = fop->df_count; 1108 auio.uio_iov = &aiov; 1109 auio.uio_iovcnt = 1; 1110 auio.uio_resid = fop->df_count; 1111 auio.uio_segflg = 0; 1112 auio.uio_offset = 1113 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1114 auio.uio_procp = p; 1115 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1116 &auio); 1117 fop->df_count -= auio.uio_resid; 1118 fop->df_reg[0] = wdc->sc_status; 1119 fop->df_reg[1] = wdc->sc_error; 1120 return error; 1121 } 1122 #endif 1123 1124 case ATAIOCCOMMAND: 1125 /* 1126 * Make sure this command is (relatively) safe first 1127 */ 1128 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1129 (flag & FWRITE) == 0) 1130 return (EBADF); 1131 { 1132 struct wd_ioctl *wi; 1133 atareq_t *atareq = (atareq_t *) addr; 1134 int error; 1135 1136 wi = wi_get(); 1137 wi->wi_softc = wd; 1138 wi->wi_atareq = *atareq; 1139 1140 if (atareq->datalen && atareq->flags & 1141 (ATACMD_READ | ATACMD_WRITE)) { 1142 wi->wi_iov.iov_base = atareq->databuf; 1143 wi->wi_iov.iov_len = atareq->datalen; 1144 wi->wi_uio.uio_iov = &wi->wi_iov; 1145 wi->wi_uio.uio_iovcnt = 1; 1146 wi->wi_uio.uio_resid = atareq->datalen; 1147 wi->wi_uio.uio_offset = 0; 1148 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1149 wi->wi_uio.uio_rw = 1150 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1151 wi->wi_uio.uio_procp = p; 1152 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1153 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1154 minphys, &wi->wi_uio); 1155 } else { 1156 /* No need to call physio if we don't have any 1157 user data */ 1158 wi->wi_bp.b_flags = 0; 1159 wi->wi_bp.b_data = 0; 1160 wi->wi_bp.b_bcount = 0; 1161 wi->wi_bp.b_dev = 0; 1162 wi->wi_bp.b_proc = p; 1163 wdioctlstrategy(&wi->wi_bp); 1164 error = wi->wi_bp.b_error; 1165 } 1166 *atareq = wi->wi_atareq; 1167 wi_free(wi); 1168 return(error); 1169 } 1170 1171 default: 1172 return ENOTTY; 1173 } 1174 1175 #ifdef DIAGNOSTIC 1176 panic("wdioctl: impossible"); 1177 #endif 1178 } 1179 1180 #ifdef B_FORMAT 1181 int 1182 wdformat(struct buf *bp) 1183 { 1184 1185 bp->b_flags |= B_FORMAT; 1186 return wdstrategy(bp); 1187 } 1188 #endif 1189 1190 int 1191 wdsize(dev) 1192 dev_t dev; 1193 { 1194 struct wd_softc *wd; 1195 int part, omask; 1196 int size; 1197 1198 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1199 1200 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1201 if (wd == NULL) 1202 return (-1); 1203 1204 part = WDPART(dev); 1205 omask = wd->sc_dk.dk_openmask & (1 << part); 1206 1207 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1208 return (-1); 1209 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1210 size = -1; 1211 else 1212 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1213 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1214 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1215 return (-1); 1216 return (size); 1217 } 1218 1219 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1220 static int wddoingadump = 0; 1221 static int wddumprecalibrated = 0; 1222 static int wddumpmulti = 1; 1223 1224 /* 1225 * Dump core after a system crash. 1226 */ 1227 int 1228 wddump(dev, blkno, va, size) 1229 dev_t dev; 1230 daddr_t blkno; 1231 caddr_t va; 1232 size_t size; 1233 { 1234 struct wd_softc *wd; /* disk unit to do the I/O */ 1235 struct disklabel *lp; /* disk's disklabel */ 1236 int part, err; 1237 int nblks; /* total number of sectors left to write */ 1238 char errbuf[256]; 1239 1240 /* Check if recursive dump; if so, punt. */ 1241 if (wddoingadump) 1242 return EFAULT; 1243 wddoingadump = 1; 1244 1245 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1246 if (wd == NULL) 1247 return (ENXIO); 1248 1249 part = WDPART(dev); 1250 1251 /* Make sure it was initialized. */ 1252 if (wd->drvp->state < READY) 1253 return ENXIO; 1254 1255 /* Convert to disk sectors. Request must be a multiple of size. */ 1256 lp = wd->sc_dk.dk_label; 1257 if ((size % lp->d_secsize) != 0) 1258 return EFAULT; 1259 nblks = size / lp->d_secsize; 1260 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1261 1262 /* Check transfer bounds against partition size. */ 1263 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1264 return EINVAL; 1265 1266 /* Offset block number to start of partition. */ 1267 blkno += lp->d_partitions[part].p_offset; 1268 1269 /* Recalibrate, if first dump transfer. */ 1270 if (wddumprecalibrated == 0) { 1271 wddumpmulti = wd->sc_multi; 1272 wddumprecalibrated = 1; 1273 wd->drvp->state = RESET; 1274 } 1275 1276 while (nblks > 0) { 1277 again: 1278 wd->sc_bp = NULL; 1279 wd->sc_wdc_bio.blkno = blkno; 1280 wd->sc_wdc_bio.flags = ATA_POLL; 1281 if (wddumpmulti == 1) 1282 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1283 if (wd->sc_flags & WDF_LBA48) 1284 wd->sc_wdc_bio.flags |= ATA_LBA48; 1285 if (wd->sc_flags & WDF_LBA) 1286 wd->sc_wdc_bio.flags |= ATA_LBA; 1287 wd->sc_wdc_bio.bcount = 1288 min(nblks, wddumpmulti) * lp->d_secsize; 1289 wd->sc_wdc_bio.databuf = va; 1290 #ifndef WD_DUMP_NOT_TRUSTED 1291 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1292 case WDC_TRY_AGAIN: 1293 panic("wddump: try again"); 1294 break; 1295 case WDC_QUEUED: 1296 panic("wddump: polled command has been queued"); 1297 break; 1298 case WDC_COMPLETE: 1299 break; 1300 } 1301 switch(wd->sc_wdc_bio.error) { 1302 case TIMEOUT: 1303 printf("wddump: device timed out"); 1304 err = EIO; 1305 break; 1306 case ERR_DF: 1307 printf("wddump: drive fault"); 1308 err = EIO; 1309 break; 1310 case ERR_DMA: 1311 printf("wddump: DMA error"); 1312 err = EIO; 1313 break; 1314 case ERROR: 1315 errbuf[0] = '\0'; 1316 wdperror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 1317 printf("wddump: %s", errbuf); 1318 err = EIO; 1319 break; 1320 case NOERROR: 1321 err = 0; 1322 break; 1323 default: 1324 panic("wddump: unknown error type"); 1325 } 1326 if (err != 0) { 1327 if (wddumpmulti != 1) { 1328 wddumpmulti = 1; /* retry in single-sector */ 1329 printf(", retrying\n"); 1330 goto again; 1331 } 1332 printf("\n"); 1333 return err; 1334 } 1335 #else /* WD_DUMP_NOT_TRUSTED */ 1336 /* Let's just talk about this first... */ 1337 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1338 unit, va, cylin, head, sector); 1339 delay(500 * 1000); /* half a second */ 1340 #endif 1341 1342 /* update block count */ 1343 nblks -= min(nblks, wddumpmulti); 1344 blkno += min(nblks, wddumpmulti); 1345 va += min(nblks, wddumpmulti) * lp->d_secsize; 1346 } 1347 1348 wddoingadump = 0; 1349 return 0; 1350 } 1351 1352 #ifdef HAS_BAD144_HANDLING 1353 /* 1354 * Internalize the bad sector table. 1355 */ 1356 void 1357 bad144intern(wd) 1358 struct wd_softc *wd; 1359 { 1360 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1361 struct disklabel *lp = wd->sc_dk.dk_label; 1362 int i = 0; 1363 1364 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1365 1366 for (; i < NBT_BAD; i++) { 1367 if (bt->bt_bad[i].bt_cyl == 0xffff) 1368 break; 1369 wd->sc_badsect[i] = 1370 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1371 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1372 (bt->bt_bad[i].bt_trksec & 0xff); 1373 } 1374 for (; i < NBT_BAD+1; i++) 1375 wd->sc_badsect[i] = -1; 1376 } 1377 #endif 1378 1379 int 1380 wd_get_params(wd, flags, params) 1381 struct wd_softc *wd; 1382 u_int8_t flags; 1383 struct ataparams *params; 1384 { 1385 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1386 case CMD_AGAIN: 1387 return 1; 1388 case CMD_ERR: 1389 /* 1390 * We `know' there's a drive here; just assume it's old. 1391 * This geometry is only used to read the MBR and print a 1392 * (false) attach message. 1393 */ 1394 strncpy(params->atap_model, "ST506", 1395 sizeof params->atap_model); 1396 params->atap_config = ATA_CFG_FIXED; 1397 params->atap_cylinders = 1024; 1398 params->atap_heads = 8; 1399 params->atap_sectors = 17; 1400 params->atap_multi = 1; 1401 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1402 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1403 return 0; 1404 case CMD_OK: 1405 return 0; 1406 default: 1407 panic("wd_get_params: bad return code from ata_get_params"); 1408 /* NOTREACHED */ 1409 } 1410 } 1411 1412 void 1413 wd_flushcache(wd, flags) 1414 struct wd_softc *wd; 1415 int flags; 1416 { 1417 struct wdc_command wdc_c; 1418 1419 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1420 return; 1421 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1422 wdc_c.r_command = WDCC_FLUSHCACHE; 1423 wdc_c.r_st_bmask = WDCS_DRDY; 1424 wdc_c.r_st_pmask = WDCS_DRDY; 1425 wdc_c.flags = flags; 1426 wdc_c.timeout = 30000; /* 30s timeout */ 1427 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1428 printf("%s: flush cache command didn't complete\n", 1429 wd->sc_dev.dv_xname); 1430 } 1431 if (wdc_c.flags & AT_TIMEOU) { 1432 printf("%s: flush cache command timeout\n", 1433 wd->sc_dev.dv_xname); 1434 } 1435 if (wdc_c.flags & AT_DF) { 1436 printf("%s: flush cache command: drive fault\n", 1437 wd->sc_dev.dv_xname); 1438 } 1439 /* 1440 * Ignore error register, it shouldn't report anything else 1441 * than COMMAND ABORTED, which means the device doesn't support 1442 * flush cache 1443 */ 1444 } 1445 1446 void 1447 wd_shutdown(arg) 1448 void *arg; 1449 { 1450 struct wd_softc *wd = arg; 1451 wd_flushcache(wd, AT_POLL); 1452 } 1453 1454 /* 1455 * Allocate space for a ioctl queue structure. Mostly taken from 1456 * scsipi_ioctl.c 1457 */ 1458 struct wd_ioctl * 1459 wi_get() 1460 { 1461 struct wd_ioctl *wi; 1462 int s; 1463 1464 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1465 s = splbio(); 1466 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1467 splx(s); 1468 return (wi); 1469 } 1470 1471 /* 1472 * Free an ioctl structure and remove it from our list 1473 */ 1474 1475 void 1476 wi_free(wi) 1477 struct wd_ioctl *wi; 1478 { 1479 int s; 1480 1481 s = splbio(); 1482 LIST_REMOVE(wi, wi_list); 1483 splx(s); 1484 free(wi, M_TEMP); 1485 } 1486 1487 /* 1488 * Find a wd_ioctl structure based on the struct buf. 1489 */ 1490 1491 struct wd_ioctl * 1492 wi_find(bp) 1493 struct buf *bp; 1494 { 1495 struct wd_ioctl *wi; 1496 int s; 1497 1498 s = splbio(); 1499 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1500 if (bp == &wi->wi_bp) 1501 break; 1502 splx(s); 1503 return (wi); 1504 } 1505 1506 /* 1507 * Ioctl pseudo strategy routine 1508 * 1509 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1510 * happens here is: 1511 * 1512 * - wdioctl() queues a wd_ioctl structure. 1513 * 1514 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1515 * user space I/O is required. If physio() is called, physio() eventually 1516 * calls wdioctlstrategy(). 1517 * 1518 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1519 * to perform the actual command 1520 * 1521 * The reason for the use of the pseudo strategy routine is because 1522 * when doing I/O to/from user space, physio _really_ wants to be in 1523 * the loop. We could put the entire buffer into the ioctl request 1524 * structure, but that won't scale if we want to do things like download 1525 * microcode. 1526 */ 1527 1528 void 1529 wdioctlstrategy(bp) 1530 struct buf *bp; 1531 { 1532 struct wd_ioctl *wi; 1533 struct wdc_command wdc_c; 1534 int error = 0; 1535 1536 wi = wi_find(bp); 1537 if (wi == NULL) { 1538 printf("user_strat: No ioctl\n"); 1539 error = EINVAL; 1540 goto bad; 1541 } 1542 1543 memset(&wdc_c, 0, sizeof(wdc_c)); 1544 1545 /* 1546 * Abort if physio broke up the transfer 1547 */ 1548 1549 if (bp->b_bcount != wi->wi_atareq.datalen) { 1550 printf("physio split wd ioctl request... cannot proceed\n"); 1551 error = EIO; 1552 goto bad; 1553 } 1554 1555 /* 1556 * Abort if we didn't get a buffer size that was a multiple of 1557 * our sector size (or was larger than NBBY) 1558 */ 1559 1560 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1561 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1562 (1 << NBBY)) { 1563 error = EINVAL; 1564 goto bad; 1565 } 1566 1567 /* 1568 * Make sure a timeout was supplied in the ioctl request 1569 */ 1570 1571 if (wi->wi_atareq.timeout == 0) { 1572 error = EINVAL; 1573 goto bad; 1574 } 1575 1576 if (wi->wi_atareq.flags & ATACMD_READ) 1577 wdc_c.flags |= AT_READ; 1578 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1579 wdc_c.flags |= AT_WRITE; 1580 1581 if (wi->wi_atareq.flags & ATACMD_READREG) 1582 wdc_c.flags |= AT_READREG; 1583 1584 wdc_c.flags |= AT_WAIT; 1585 1586 wdc_c.timeout = wi->wi_atareq.timeout; 1587 wdc_c.r_command = wi->wi_atareq.command; 1588 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1589 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1590 wdc_c.r_sector = wi->wi_atareq.sec_num; 1591 wdc_c.r_count = wi->wi_atareq.sec_count; 1592 wdc_c.r_precomp = wi->wi_atareq.features; 1593 wdc_c.r_st_bmask = WDCS_DRDY; 1594 wdc_c.r_st_pmask = WDCS_DRDY; 1595 wdc_c.data = wi->wi_bp.b_data; 1596 wdc_c.bcount = wi->wi_bp.b_bcount; 1597 1598 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1599 != WDC_COMPLETE) { 1600 wi->wi_atareq.retsts = ATACMD_ERROR; 1601 goto bad; 1602 } 1603 1604 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1605 if (wdc_c.flags & AT_ERROR) { 1606 wi->wi_atareq.retsts = ATACMD_ERROR; 1607 wi->wi_atareq.error = wdc_c.r_error; 1608 } else if (wdc_c.flags & AT_DF) 1609 wi->wi_atareq.retsts = ATACMD_DF; 1610 else 1611 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1612 } else { 1613 wi->wi_atareq.retsts = ATACMD_OK; 1614 if (wi->wi_atareq.flags & ATACMD_READREG) { 1615 wi->wi_atareq.head = wdc_c.r_head ; 1616 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1617 wi->wi_atareq.sec_num = wdc_c.r_sector; 1618 wi->wi_atareq.sec_count = wdc_c.r_count; 1619 wi->wi_atareq.features = wdc_c.r_precomp; 1620 wi->wi_atareq.error = wdc_c.r_error; 1621 } 1622 } 1623 1624 bp->b_error = 0; 1625 biodone(bp); 1626 return; 1627 bad: 1628 bp->b_flags |= B_ERROR; 1629 bp->b_error = error; 1630 biodone(bp); 1631 } 1632