wd.c revision 1.211
1 /* $NetBSD: wd.c,v 1.211 2001/01/07 18:09:01 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1998 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 #ifndef WDCDEBUG 69 #define WDCDEBUG 70 #endif /* WDCDEBUG */ 71 72 #include "rnd.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/conf.h> 78 #include <sys/file.h> 79 #include <sys/stat.h> 80 #include <sys/ioctl.h> 81 #include <sys/buf.h> 82 #include <sys/uio.h> 83 #include <sys/malloc.h> 84 #include <sys/device.h> 85 #include <sys/disklabel.h> 86 #include <sys/disk.h> 87 #include <sys/syslog.h> 88 #include <sys/proc.h> 89 #include <sys/vnode.h> 90 #if NRND > 0 91 #include <sys/rnd.h> 92 #endif 93 94 #include <machine/intr.h> 95 #include <machine/bus.h> 96 97 #include <dev/ata/atareg.h> 98 #include <dev/ata/atavar.h> 99 #include <dev/ata/wdvar.h> 100 #include <dev/ic/wdcreg.h> 101 #include <sys/ataio.h> 102 #include "locators.h" 103 104 #define WAITTIME (4 * hz) /* time to wait for a completion */ 105 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 106 #define WDIORETRIES 5 /* number of retries before giving up */ 107 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 108 109 #define WDUNIT(dev) DISKUNIT(dev) 110 #define WDPART(dev) DISKPART(dev) 111 #define WDMINOR(unit, part) DISKMINOR(unit, part) 112 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 113 114 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 115 116 #define DEBUG_INTR 0x01 117 #define DEBUG_XFERS 0x02 118 #define DEBUG_STATUS 0x04 119 #define DEBUG_FUNCS 0x08 120 #define DEBUG_PROBE 0x10 121 #ifdef WDCDEBUG 122 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 123 #define WDCDEBUG_PRINT(args, level) \ 124 if (wdcdebug_wd_mask & (level)) \ 125 printf args 126 #else 127 #define WDCDEBUG_PRINT(args, level) 128 #endif 129 130 struct wd_softc { 131 /* General disk infos */ 132 struct device sc_dev; 133 struct disk sc_dk; 134 struct buf_queue sc_q; 135 struct callout sc_restart_ch; 136 /* IDE disk soft states */ 137 struct ata_bio sc_wdc_bio; /* current transfer */ 138 struct buf *sc_bp; /* buf being transfered */ 139 void *wdc_softc; /* pointer to our parent */ 140 struct ata_drive_datas *drvp; /* Our controller's infos */ 141 int openings; 142 struct ataparams sc_params;/* drive characteistics found */ 143 int sc_flags; 144 #define WDF_LOCKED 0x01 145 #define WDF_WANTED 0x02 146 #define WDF_WLABEL 0x04 /* label is writable */ 147 #define WDF_LABELLING 0x08 /* writing label */ 148 /* 149 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 150 * more fully implemented. 151 */ 152 #define WDF_LOADED 0x10 /* parameters loaded */ 153 #define WDF_WAIT 0x20 /* waiting for resources */ 154 #define WDF_LBA 0x40 /* using LBA mode */ 155 #define WDF_KLABEL 0x80 /* retain label after 'full' close */ 156 int sc_capacity; 157 int cyl; /* actual drive parameters */ 158 int heads; 159 int sectors; 160 int retries; /* number of xfer retry */ 161 162 void *sc_sdhook; /* our shutdown hook */ 163 164 #if NRND > 0 165 rndsource_element_t rnd_source; 166 #endif 167 }; 168 169 #define sc_drive sc_wdc_bio.drive 170 #define sc_mode sc_wdc_bio.mode 171 #define sc_multi sc_wdc_bio.multi 172 #define sc_badsect sc_wdc_bio.badsect 173 174 int wdprobe __P((struct device *, struct cfdata *, void *)); 175 void wdattach __P((struct device *, struct device *, void *)); 176 int wddetach __P((struct device *, int)); 177 int wdactivate __P((struct device *, enum devact)); 178 int wdprint __P((void *, char *)); 179 180 struct cfattach wd_ca = { 181 sizeof(struct wd_softc), wdprobe, wdattach, wddetach, wdactivate 182 }; 183 184 extern struct cfdriver wd_cd; 185 186 /* 187 * Glue necessary to hook WDCIOCCOMMAND into physio 188 */ 189 190 struct wd_ioctl { 191 LIST_ENTRY(wd_ioctl) wi_list; 192 struct buf wi_bp; 193 struct uio wi_uio; 194 struct iovec wi_iov; 195 atareq_t wi_atareq; 196 struct wd_softc *wi_softc; 197 }; 198 199 LIST_HEAD(, wd_ioctl) wi_head; 200 201 struct wd_ioctl *wi_find __P((struct buf *)); 202 void wi_free __P((struct wd_ioctl *)); 203 struct wd_ioctl *wi_get __P((void)); 204 void wdioctlstrategy __P((struct buf *)); 205 206 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 207 void wdgetdisklabel __P((struct wd_softc *)); 208 void wdstrategy __P((struct buf *)); 209 void wdstart __P((void *)); 210 void __wdstart __P((struct wd_softc*, struct buf *)); 211 void wdrestart __P((void*)); 212 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 213 void wd_flushcache __P((struct wd_softc *, int)); 214 void wd_shutdown __P((void*)); 215 216 struct dkdriver wddkdriver = { wdstrategy }; 217 218 /* XXX: these should go elsewhere */ 219 cdev_decl(wd); 220 bdev_decl(wd); 221 222 #ifdef HAS_BAD144_HANDLING 223 static void bad144intern __P((struct wd_softc *)); 224 #endif 225 int wdlock __P((struct wd_softc *)); 226 void wdunlock __P((struct wd_softc *)); 227 228 int 229 wdprobe(parent, match, aux) 230 struct device *parent; 231 struct cfdata *match; 232 233 void *aux; 234 { 235 struct ata_atapi_attach *aa_link = aux; 236 237 if (aa_link == NULL) 238 return 0; 239 if (aa_link->aa_type != T_ATA) 240 return 0; 241 242 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 243 match->cf_loc[ATACF_CHANNEL] != aa_link->aa_channel) 244 return 0; 245 246 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 247 match->cf_loc[ATACF_DRIVE] != aa_link->aa_drv_data->drive) 248 return 0; 249 return 1; 250 } 251 252 void 253 wdattach(parent, self, aux) 254 struct device *parent, *self; 255 void *aux; 256 { 257 struct wd_softc *wd = (void *)self; 258 struct ata_atapi_attach *aa_link= aux; 259 int i, blank; 260 char buf[41], pbuf[9], c, *p, *q; 261 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 262 263 callout_init(&wd->sc_restart_ch); 264 BUFQ_INIT(&wd->sc_q); 265 266 wd->openings = aa_link->aa_openings; 267 wd->drvp = aa_link->aa_drv_data;; 268 wd->wdc_softc = parent; 269 /* give back our softc to our caller */ 270 wd->drvp->drv_softc = &wd->sc_dev; 271 272 /* read our drive info */ 273 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 274 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 275 return; 276 } 277 278 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 279 i < sizeof(wd->sc_params.atap_model); i++) { 280 c = *p++; 281 if (c == '\0') 282 break; 283 if (c != ' ') { 284 if (blank) { 285 *q++ = ' '; 286 blank = 0; 287 } 288 *q++ = c; 289 } else 290 blank = 1; 291 } 292 *q++ = '\0'; 293 294 printf(": <%s>\n", buf); 295 296 if ((wd->sc_params.atap_multi & 0xff) > 1) { 297 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 298 } else { 299 wd->sc_multi = 1; 300 } 301 302 printf("%s: drive supports %d-sector PIO transfers,", 303 wd->sc_dev.dv_xname, wd->sc_multi); 304 305 /* Prior to ATA-4, LBA was optional. */ 306 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 307 wd->sc_flags |= WDF_LBA; 308 #if 0 309 /* ATA-4 requires LBA. */ 310 if (wd->sc_params.atap_ataversion != 0xffff && 311 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 312 wd->sc_flags |= WDF_LBA; 313 #endif 314 315 if ((wd->sc_flags & WDF_LBA) != 0) { 316 printf(" LBA addressing\n"); 317 wd->sc_capacity = 318 (wd->sc_params.atap_capacity[1] << 16) | 319 wd->sc_params.atap_capacity[0]; 320 } else { 321 printf(" chs addressing\n"); 322 wd->sc_capacity = 323 wd->sc_params.atap_cylinders * 324 wd->sc_params.atap_heads * 325 wd->sc_params.atap_sectors; 326 } 327 format_bytes(pbuf, sizeof(pbuf), 328 (u_int64_t)wd->sc_capacity * DEV_BSIZE); 329 printf("%s: %s, %d cyl, %d head, %d sec, " 330 "%d bytes/sect x %d sectors\n", 331 self->dv_xname, pbuf, wd->sc_params.atap_cylinders, 332 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 333 DEV_BSIZE, wd->sc_capacity); 334 335 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 336 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 337 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 338 /* 339 * Initialize and attach the disk structure. 340 */ 341 wd->sc_dk.dk_driver = &wddkdriver; 342 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 343 disk_attach(&wd->sc_dk); 344 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 345 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 346 if (wd->sc_sdhook == NULL) 347 printf("%s: WARNING: unable to establish shutdown hook\n", 348 wd->sc_dev.dv_xname); 349 #if NRND > 0 350 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 351 RND_TYPE_DISK, 0); 352 #endif 353 } 354 355 int 356 wdactivate(self, act) 357 struct device *self; 358 enum devact act; 359 { 360 int rv = 0; 361 362 switch (act) { 363 case DVACT_ACTIVATE: 364 rv = EOPNOTSUPP; 365 break; 366 367 case DVACT_DEACTIVATE: 368 /* 369 * Nothing to do; we key off the device's DVF_ACTIVATE. 370 */ 371 break; 372 } 373 return (rv); 374 } 375 376 int 377 wddetach(self, flags) 378 struct device *self; 379 int flags; 380 { 381 struct wd_softc *sc = (struct wd_softc *)self; 382 struct buf *bp; 383 int s, bmaj, cmaj, mn; 384 385 /* locate the major number */ 386 for (bmaj = 0; bmaj < nblkdev; bmaj++) 387 if (bdevsw[bmaj].d_open == wdopen) 388 break; 389 for (cmaj = 0; cmaj < nchrdev; cmaj++) 390 if (cdevsw[cmaj].d_open == wdopen) 391 break; 392 393 s = splbio(); 394 395 /* Kill off any queued buffers. */ 396 while ((bp = BUFQ_FIRST(&sc->sc_q)) != NULL) { 397 BUFQ_REMOVE(&sc->sc_q, bp); 398 bp->b_error = EIO; 399 bp->b_flags |= B_ERROR; 400 bp->b_resid = bp->b_bcount; 401 biodone(bp); 402 } 403 404 splx(s); 405 406 /* Nuke the vnodes for any open instances. */ 407 mn = WDMINOR(self->dv_unit, 0); 408 vdevgone(bmaj, mn, mn + MAXPARTITIONS - 1, VBLK); 409 vdevgone(cmaj, mn, mn + MAXPARTITIONS - 1, VCHR); 410 411 /* Detach disk. */ 412 disk_detach(&sc->sc_dk); 413 414 /* Get rid of the shutdown hook. */ 415 if (sc->sc_sdhook != NULL) 416 shutdownhook_disestablish(sc->sc_sdhook); 417 418 #if NRND > 0 419 /* Unhook the entropy source. */ 420 rnd_detach_source(&sc->rnd_source); 421 #endif 422 423 return (0); 424 } 425 426 /* 427 * Read/write routine for a buffer. Validates the arguments and schedules the 428 * transfer. Does not wait for the transfer to complete. 429 */ 430 void 431 wdstrategy(bp) 432 struct buf *bp; 433 { 434 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 435 struct disklabel *lp = wd->sc_dk.dk_label; 436 daddr_t blkno; 437 int s; 438 439 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 440 DEBUG_XFERS); 441 442 /* Valid request? */ 443 if (bp->b_blkno < 0 || 444 (bp->b_bcount % lp->d_secsize) != 0 || 445 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 446 bp->b_error = EINVAL; 447 goto bad; 448 } 449 450 /* If device invalidated (e.g. media change, door open), error. */ 451 if ((wd->sc_flags & WDF_LOADED) == 0) { 452 bp->b_error = EIO; 453 goto bad; 454 } 455 456 /* If it's a null transfer, return immediately. */ 457 if (bp->b_bcount == 0) 458 goto done; 459 460 /* 461 * Do bounds checking, adjust transfer. if error, process. 462 * If end of partition, just return. 463 */ 464 if (WDPART(bp->b_dev) != RAW_PART && 465 bounds_check_with_label(bp, wd->sc_dk.dk_label, 466 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 467 goto done; 468 469 /* 470 * Now convert the block number to absolute and put it in 471 * terms of the device's logical block size. 472 */ 473 if (lp->d_secsize >= DEV_BSIZE) 474 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 475 else 476 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 477 478 if (WDPART(bp->b_dev) != RAW_PART) 479 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 480 481 bp->b_rawblkno = blkno; 482 483 /* Queue transfer on drive, activate drive and controller if idle. */ 484 s = splbio(); 485 disksort_blkno(&wd->sc_q, bp); 486 wdstart(wd); 487 splx(s); 488 return; 489 bad: 490 bp->b_flags |= B_ERROR; 491 done: 492 /* Toss transfer; we're done early. */ 493 bp->b_resid = bp->b_bcount; 494 biodone(bp); 495 } 496 497 /* 498 * Queue a drive for I/O. 499 */ 500 void 501 wdstart(arg) 502 void *arg; 503 { 504 struct wd_softc *wd = arg; 505 struct buf *bp = NULL; 506 507 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 508 DEBUG_XFERS); 509 while (wd->openings > 0) { 510 511 /* Is there a buf for us ? */ 512 if ((bp = BUFQ_FIRST(&wd->sc_q)) == NULL) 513 return; 514 BUFQ_REMOVE(&wd->sc_q, bp); 515 516 /* 517 * Make the command. First lock the device 518 */ 519 wd->openings--; 520 521 wd->retries = 0; 522 __wdstart(wd, bp); 523 } 524 } 525 526 void 527 __wdstart(wd, bp) 528 struct wd_softc *wd; 529 struct buf *bp; 530 { 531 532 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 533 wd->sc_wdc_bio.blkdone =0; 534 wd->sc_bp = bp; 535 /* 536 * If we're retrying, retry in single-sector mode. This will give us 537 * the sector number of the problem, and will eventually allow the 538 * transfer to succeed. 539 */ 540 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 541 wd->sc_wdc_bio.flags = ATA_SINGLE; 542 else 543 wd->sc_wdc_bio.flags = 0; 544 if (wd->sc_flags & WDF_LBA) 545 wd->sc_wdc_bio.flags |= ATA_LBA; 546 if (bp->b_flags & B_READ) 547 wd->sc_wdc_bio.flags |= ATA_READ; 548 wd->sc_wdc_bio.bcount = bp->b_bcount; 549 wd->sc_wdc_bio.databuf = bp->b_data; 550 /* Instrumentation. */ 551 disk_busy(&wd->sc_dk); 552 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 553 case WDC_TRY_AGAIN: 554 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 555 break; 556 case WDC_QUEUED: 557 case WDC_COMPLETE: 558 break; 559 default: 560 panic("__wdstart: bad return code from wdc_ata_bio()"); 561 } 562 } 563 564 void 565 wddone(v) 566 void *v; 567 { 568 struct wd_softc *wd = v; 569 struct buf *bp = wd->sc_bp; 570 char buf[256], *errbuf = buf; 571 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 572 DEBUG_XFERS); 573 574 bp->b_resid = wd->sc_wdc_bio.bcount; 575 errbuf[0] = '\0'; 576 switch (wd->sc_wdc_bio.error) { 577 case ERR_DMA: 578 errbuf = "DMA error"; 579 goto retry; 580 case ERR_DF: 581 errbuf = "device fault"; 582 goto retry; 583 case TIMEOUT: 584 errbuf = "device timeout"; 585 goto retry; 586 case ERROR: 587 /* Don't care about media change bits */ 588 if (wd->sc_wdc_bio.r_error != 0 && 589 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 590 goto noerror; 591 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 592 retry: /* Just reset and retry. Can we do more ? */ 593 wdc_reset_channel(wd->drvp); 594 diskerr(bp, "wd", errbuf, LOG_PRINTF, 595 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 596 if (wd->retries++ < WDIORETRIES) { 597 printf(", retrying\n"); 598 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 599 wdrestart, wd); 600 return; 601 } 602 printf("\n"); 603 bp->b_flags |= B_ERROR; 604 bp->b_error = EIO; 605 break; 606 case NOERROR: 607 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 608 printf("%s: soft error (corrected)\n", 609 wd->sc_dev.dv_xname); 610 break; 611 case ERR_NODEV: 612 bp->b_flags |= B_ERROR; 613 bp->b_error = EIO; 614 break; 615 } 616 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 617 #if NRND > 0 618 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 619 #endif 620 biodone(bp); 621 wd->openings++; 622 wdstart(wd); 623 } 624 625 void 626 wdrestart(v) 627 void *v; 628 { 629 struct wd_softc *wd = v; 630 struct buf *bp = wd->sc_bp; 631 int s; 632 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 633 DEBUG_XFERS); 634 635 s = splbio(); 636 __wdstart(v, bp); 637 splx(s); 638 } 639 640 int 641 wdread(dev, uio, flags) 642 dev_t dev; 643 struct uio *uio; 644 int flags; 645 { 646 647 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 648 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 649 } 650 651 int 652 wdwrite(dev, uio, flags) 653 dev_t dev; 654 struct uio *uio; 655 int flags; 656 { 657 658 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 659 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 660 } 661 662 /* 663 * Wait interruptibly for an exclusive lock. 664 * 665 * XXX 666 * Several drivers do this; it should be abstracted and made MP-safe. 667 */ 668 int 669 wdlock(wd) 670 struct wd_softc *wd; 671 { 672 int error; 673 int s; 674 675 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 676 677 s = splbio(); 678 679 while ((wd->sc_flags & WDF_LOCKED) != 0) { 680 wd->sc_flags |= WDF_WANTED; 681 if ((error = tsleep(wd, PRIBIO | PCATCH, 682 "wdlck", 0)) != 0) { 683 splx(s); 684 return error; 685 } 686 } 687 wd->sc_flags |= WDF_LOCKED; 688 splx(s); 689 return 0; 690 } 691 692 /* 693 * Unlock and wake up any waiters. 694 */ 695 void 696 wdunlock(wd) 697 struct wd_softc *wd; 698 { 699 700 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 701 702 wd->sc_flags &= ~WDF_LOCKED; 703 if ((wd->sc_flags & WDF_WANTED) != 0) { 704 wd->sc_flags &= ~WDF_WANTED; 705 wakeup(wd); 706 } 707 } 708 709 int 710 wdopen(dev, flag, fmt, p) 711 dev_t dev; 712 int flag, fmt; 713 struct proc *p; 714 { 715 struct wd_softc *wd; 716 int part, error; 717 718 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 719 wd = device_lookup(&wd_cd, WDUNIT(dev)); 720 if (wd == NULL) 721 return (ENXIO); 722 723 /* 724 * If this is the first open of this device, add a reference 725 * to the adapter. 726 */ 727 if (wd->sc_dk.dk_openmask == 0 && 728 (error = wdc_ata_addref(wd->drvp)) != 0) 729 return (error); 730 731 if ((error = wdlock(wd)) != 0) 732 goto bad4; 733 734 if (wd->sc_dk.dk_openmask != 0) { 735 /* 736 * If any partition is open, but the disk has been invalidated, 737 * disallow further opens. 738 */ 739 if ((wd->sc_flags & WDF_LOADED) == 0) { 740 error = EIO; 741 goto bad3; 742 } 743 } else { 744 if ((wd->sc_flags & WDF_LOADED) == 0) { 745 wd->sc_flags |= WDF_LOADED; 746 747 /* Load the physical device parameters. */ 748 wd_get_params(wd, AT_WAIT, &wd->sc_params); 749 750 /* Load the partition info if not already loaded. */ 751 wdgetdisklabel(wd); 752 } 753 } 754 755 part = WDPART(dev); 756 757 /* Check that the partition exists. */ 758 if (part != RAW_PART && 759 (part >= wd->sc_dk.dk_label->d_npartitions || 760 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 761 error = ENXIO; 762 goto bad; 763 } 764 765 /* Insure only one open at a time. */ 766 switch (fmt) { 767 case S_IFCHR: 768 wd->sc_dk.dk_copenmask |= (1 << part); 769 break; 770 case S_IFBLK: 771 wd->sc_dk.dk_bopenmask |= (1 << part); 772 break; 773 } 774 wd->sc_dk.dk_openmask = 775 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 776 777 wdunlock(wd); 778 return 0; 779 780 bad: 781 if (wd->sc_dk.dk_openmask == 0) { 782 } 783 784 bad3: 785 wdunlock(wd); 786 bad4: 787 if (wd->sc_dk.dk_openmask == 0) 788 wdc_ata_delref(wd->drvp); 789 return error; 790 } 791 792 int 793 wdclose(dev, flag, fmt, p) 794 dev_t dev; 795 int flag, fmt; 796 struct proc *p; 797 { 798 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 799 int part = WDPART(dev); 800 int error; 801 802 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 803 if ((error = wdlock(wd)) != 0) 804 return error; 805 806 switch (fmt) { 807 case S_IFCHR: 808 wd->sc_dk.dk_copenmask &= ~(1 << part); 809 break; 810 case S_IFBLK: 811 wd->sc_dk.dk_bopenmask &= ~(1 << part); 812 break; 813 } 814 wd->sc_dk.dk_openmask = 815 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 816 817 if (wd->sc_dk.dk_openmask == 0) { 818 wd_flushcache(wd, AT_WAIT); 819 /* XXXX Must wait for I/O to complete! */ 820 821 if (! (wd->sc_flags & WDF_KLABEL)) 822 wd->sc_flags &= ~WDF_LOADED; 823 824 wdc_ata_delref(wd->drvp); 825 } 826 827 wdunlock(wd); 828 return 0; 829 } 830 831 void 832 wdgetdefaultlabel(wd, lp) 833 struct wd_softc *wd; 834 struct disklabel *lp; 835 { 836 837 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 838 memset(lp, 0, sizeof(struct disklabel)); 839 840 lp->d_secsize = DEV_BSIZE; 841 lp->d_ntracks = wd->sc_params.atap_heads; 842 lp->d_nsectors = wd->sc_params.atap_sectors; 843 lp->d_ncylinders = wd->sc_params.atap_cylinders; 844 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 845 846 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 847 lp->d_type = DTYPE_ST506; 848 else 849 lp->d_type = DTYPE_ESDI; 850 851 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 852 strncpy(lp->d_packname, "fictitious", 16); 853 lp->d_secperunit = wd->sc_capacity; 854 lp->d_rpm = 3600; 855 lp->d_interleave = 1; 856 lp->d_flags = 0; 857 858 lp->d_partitions[RAW_PART].p_offset = 0; 859 lp->d_partitions[RAW_PART].p_size = 860 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 861 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 862 lp->d_npartitions = RAW_PART + 1; 863 864 lp->d_magic = DISKMAGIC; 865 lp->d_magic2 = DISKMAGIC; 866 lp->d_checksum = dkcksum(lp); 867 } 868 869 /* 870 * Fabricate a default disk label, and try to read the correct one. 871 */ 872 void 873 wdgetdisklabel(wd) 874 struct wd_softc *wd; 875 { 876 struct disklabel *lp = wd->sc_dk.dk_label; 877 char *errstring; 878 879 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 880 881 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 882 883 wdgetdefaultlabel(wd, lp); 884 885 wd->sc_badsect[0] = -1; 886 887 if (wd->drvp->state > RECAL) 888 wd->drvp->drive_flags |= DRIVE_RESET; 889 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 890 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 891 if (errstring) { 892 /* 893 * This probably happened because the drive's default 894 * geometry doesn't match the DOS geometry. We 895 * assume the DOS geometry is now in the label and try 896 * again. XXX This is a kluge. 897 */ 898 if (wd->drvp->state > RECAL) 899 wd->drvp->drive_flags |= DRIVE_RESET; 900 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 901 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 902 } 903 if (errstring) { 904 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 905 return; 906 } 907 908 if (wd->drvp->state > RECAL) 909 wd->drvp->drive_flags |= DRIVE_RESET; 910 #ifdef HAS_BAD144_HANDLING 911 if ((lp->d_flags & D_BADSECT) != 0) 912 bad144intern(wd); 913 #endif 914 } 915 916 int 917 wdioctl(dev, xfer, addr, flag, p) 918 dev_t dev; 919 u_long xfer; 920 caddr_t addr; 921 int flag; 922 struct proc *p; 923 { 924 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 925 int error; 926 #ifdef __HAVE_OLD_DISKLABEL 927 struct disklabel newlabel; 928 #endif 929 930 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 931 932 if ((wd->sc_flags & WDF_LOADED) == 0) 933 return EIO; 934 935 switch (xfer) { 936 #ifdef HAS_BAD144_HANDLING 937 case DIOCSBAD: 938 if ((flag & FWRITE) == 0) 939 return EBADF; 940 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 941 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 942 bad144intern(wd); 943 return 0; 944 #endif 945 946 case DIOCGDINFO: 947 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 948 return 0; 949 #ifdef __HAVE_OLD_DISKLABEL 950 case ODIOCGDINFO: 951 newlabel = *(wd->sc_dk.dk_label); 952 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 953 newlabel.d_npartitions = OLDMAXPARTITIONS; 954 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 955 return 0; 956 #endif 957 958 case DIOCGPART: 959 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 960 ((struct partinfo *)addr)->part = 961 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 962 return 0; 963 964 case DIOCWDINFO: 965 case DIOCSDINFO: 966 #ifdef __HAVE_OLD_DISKLABEL 967 case ODIOCWDINFO: 968 case ODIOCSDINFO: 969 #endif 970 { 971 struct disklabel *lp; 972 973 #ifdef __HAVE_OLD_DISKLABEL 974 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 975 memset(&newlabel, 0, sizeof newlabel); 976 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 977 lp = &newlabel; 978 } else 979 #endif 980 lp = (struct disklabel *)addr; 981 982 if ((flag & FWRITE) == 0) 983 return EBADF; 984 985 if ((error = wdlock(wd)) != 0) 986 return error; 987 wd->sc_flags |= WDF_LABELLING; 988 989 error = setdisklabel(wd->sc_dk.dk_label, 990 lp, /*wd->sc_dk.dk_openmask : */0, 991 wd->sc_dk.dk_cpulabel); 992 if (error == 0) { 993 if (wd->drvp->state > RECAL) 994 wd->drvp->drive_flags |= DRIVE_RESET; 995 if (xfer == DIOCWDINFO 996 #ifdef __HAVE_OLD_DISKLABEL 997 || xfer == ODIOCWDINFO 998 #endif 999 ) 1000 error = writedisklabel(WDLABELDEV(dev), 1001 wdstrategy, wd->sc_dk.dk_label, 1002 wd->sc_dk.dk_cpulabel); 1003 } 1004 1005 wd->sc_flags &= ~WDF_LABELLING; 1006 wdunlock(wd); 1007 return error; 1008 } 1009 1010 case DIOCKLABEL: 1011 if (*(int *)addr) 1012 wd->sc_flags |= WDF_KLABEL; 1013 else 1014 wd->sc_flags &= ~WDF_KLABEL; 1015 return 0; 1016 1017 case DIOCWLABEL: 1018 if ((flag & FWRITE) == 0) 1019 return EBADF; 1020 if (*(int *)addr) 1021 wd->sc_flags |= WDF_WLABEL; 1022 else 1023 wd->sc_flags &= ~WDF_WLABEL; 1024 return 0; 1025 1026 case DIOCGDEFLABEL: 1027 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1028 return 0; 1029 #ifdef __HAVE_OLD_DISKLABEL 1030 case ODIOCGDEFLABEL: 1031 wdgetdefaultlabel(wd, &newlabel); 1032 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1033 newlabel.d_npartitions = OLDMAXPARTITIONS; 1034 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1035 return 0; 1036 #endif 1037 1038 #ifdef notyet 1039 case DIOCWFORMAT: 1040 if ((flag & FWRITE) == 0) 1041 return EBADF; 1042 { 1043 register struct format_op *fop; 1044 struct iovec aiov; 1045 struct uio auio; 1046 1047 fop = (struct format_op *)addr; 1048 aiov.iov_base = fop->df_buf; 1049 aiov.iov_len = fop->df_count; 1050 auio.uio_iov = &aiov; 1051 auio.uio_iovcnt = 1; 1052 auio.uio_resid = fop->df_count; 1053 auio.uio_segflg = 0; 1054 auio.uio_offset = 1055 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1056 auio.uio_procp = p; 1057 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1058 &auio); 1059 fop->df_count -= auio.uio_resid; 1060 fop->df_reg[0] = wdc->sc_status; 1061 fop->df_reg[1] = wdc->sc_error; 1062 return error; 1063 } 1064 #endif 1065 1066 case ATAIOCCOMMAND: 1067 /* 1068 * Make sure this command is (relatively) safe first 1069 */ 1070 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1071 (flag & FWRITE) == 0) 1072 return (EBADF); 1073 { 1074 struct wd_ioctl *wi; 1075 atareq_t *atareq = (atareq_t *) addr; 1076 int error; 1077 1078 wi = wi_get(); 1079 wi->wi_softc = wd; 1080 wi->wi_atareq = *atareq; 1081 1082 if (atareq->datalen && atareq->flags & 1083 (ATACMD_READ | ATACMD_WRITE)) { 1084 wi->wi_iov.iov_base = atareq->databuf; 1085 wi->wi_iov.iov_len = atareq->datalen; 1086 wi->wi_uio.uio_iov = &wi->wi_iov; 1087 wi->wi_uio.uio_iovcnt = 1; 1088 wi->wi_uio.uio_resid = atareq->datalen; 1089 wi->wi_uio.uio_offset = 0; 1090 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1091 wi->wi_uio.uio_rw = 1092 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1093 wi->wi_uio.uio_procp = p; 1094 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1095 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1096 minphys, &wi->wi_uio); 1097 } else { 1098 /* No need to call physio if we don't have any 1099 user data */ 1100 wi->wi_bp.b_flags = 0; 1101 wi->wi_bp.b_data = 0; 1102 wi->wi_bp.b_bcount = 0; 1103 wi->wi_bp.b_dev = 0; 1104 wi->wi_bp.b_proc = p; 1105 wdioctlstrategy(&wi->wi_bp); 1106 error = wi->wi_bp.b_error; 1107 } 1108 *atareq = wi->wi_atareq; 1109 wi_free(wi); 1110 return(error); 1111 } 1112 1113 default: 1114 return ENOTTY; 1115 } 1116 1117 #ifdef DIAGNOSTIC 1118 panic("wdioctl: impossible"); 1119 #endif 1120 } 1121 1122 #ifdef B_FORMAT 1123 int 1124 wdformat(struct buf *bp) 1125 { 1126 1127 bp->b_flags |= B_FORMAT; 1128 return wdstrategy(bp); 1129 } 1130 #endif 1131 1132 int 1133 wdsize(dev) 1134 dev_t dev; 1135 { 1136 struct wd_softc *wd; 1137 int part, omask; 1138 int size; 1139 1140 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1141 1142 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1143 if (wd == NULL) 1144 return (-1); 1145 1146 part = WDPART(dev); 1147 omask = wd->sc_dk.dk_openmask & (1 << part); 1148 1149 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1150 return (-1); 1151 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1152 size = -1; 1153 else 1154 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1155 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1156 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1157 return (-1); 1158 return (size); 1159 } 1160 1161 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1162 static int wddoingadump = 0; 1163 static int wddumprecalibrated = 0; 1164 static int wddumpmulti = 1; 1165 1166 /* 1167 * Dump core after a system crash. 1168 */ 1169 int 1170 wddump(dev, blkno, va, size) 1171 dev_t dev; 1172 daddr_t blkno; 1173 caddr_t va; 1174 size_t size; 1175 { 1176 struct wd_softc *wd; /* disk unit to do the I/O */ 1177 struct disklabel *lp; /* disk's disklabel */ 1178 int part, err; 1179 int nblks; /* total number of sectors left to write */ 1180 char errbuf[256]; 1181 1182 /* Check if recursive dump; if so, punt. */ 1183 if (wddoingadump) 1184 return EFAULT; 1185 wddoingadump = 1; 1186 1187 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1188 if (wd == NULL) 1189 return (ENXIO); 1190 1191 part = WDPART(dev); 1192 1193 /* Make sure it was initialized. */ 1194 if (wd->drvp->state < READY) 1195 return ENXIO; 1196 1197 /* Convert to disk sectors. Request must be a multiple of size. */ 1198 lp = wd->sc_dk.dk_label; 1199 if ((size % lp->d_secsize) != 0) 1200 return EFAULT; 1201 nblks = size / lp->d_secsize; 1202 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1203 1204 /* Check transfer bounds against partition size. */ 1205 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1206 return EINVAL; 1207 1208 /* Offset block number to start of partition. */ 1209 blkno += lp->d_partitions[part].p_offset; 1210 1211 /* Recalibrate, if first dump transfer. */ 1212 if (wddumprecalibrated == 0) { 1213 wddumpmulti = wd->sc_multi; 1214 wddumprecalibrated = 1; 1215 wd->drvp->state = RESET; 1216 } 1217 1218 while (nblks > 0) { 1219 again: 1220 wd->sc_wdc_bio.blkno = blkno; 1221 wd->sc_wdc_bio.flags = ATA_POLL; 1222 if (wddumpmulti == 1) 1223 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1224 if (wd->sc_flags & WDF_LBA) 1225 wd->sc_wdc_bio.flags |= ATA_LBA; 1226 wd->sc_wdc_bio.bcount = 1227 min(nblks, wddumpmulti) * lp->d_secsize; 1228 wd->sc_wdc_bio.databuf = va; 1229 #ifndef WD_DUMP_NOT_TRUSTED 1230 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1231 case WDC_TRY_AGAIN: 1232 panic("wddump: try again"); 1233 break; 1234 case WDC_QUEUED: 1235 panic("wddump: polled command has been queued"); 1236 break; 1237 case WDC_COMPLETE: 1238 break; 1239 } 1240 switch(wd->sc_wdc_bio.error) { 1241 case TIMEOUT: 1242 printf("wddump: device timed out"); 1243 err = EIO; 1244 break; 1245 case ERR_DF: 1246 printf("wddump: drive fault"); 1247 err = EIO; 1248 break; 1249 case ERR_DMA: 1250 printf("wddump: DMA error"); 1251 err = EIO; 1252 break; 1253 case ERROR: 1254 errbuf[0] = '\0'; 1255 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 1256 printf("wddump: %s", errbuf); 1257 err = EIO; 1258 break; 1259 case NOERROR: 1260 err = 0; 1261 break; 1262 default: 1263 panic("wddump: unknown error type"); 1264 } 1265 if (err != 0) { 1266 if (wddumpmulti != 1) { 1267 wddumpmulti = 1; /* retry in single-sector */ 1268 printf(", retrying\n"); 1269 goto again; 1270 } 1271 printf("\n"); 1272 return err; 1273 } 1274 #else /* WD_DUMP_NOT_TRUSTED */ 1275 /* Let's just talk about this first... */ 1276 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1277 unit, va, cylin, head, sector); 1278 delay(500 * 1000); /* half a second */ 1279 #endif 1280 1281 /* update block count */ 1282 nblks -= min(nblks, wddumpmulti); 1283 blkno += min(nblks, wddumpmulti); 1284 va += min(nblks, wddumpmulti) * lp->d_secsize; 1285 } 1286 1287 wddoingadump = 0; 1288 return 0; 1289 } 1290 1291 #ifdef HAS_BAD144_HANDLING 1292 /* 1293 * Internalize the bad sector table. 1294 */ 1295 void 1296 bad144intern(wd) 1297 struct wd_softc *wd; 1298 { 1299 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1300 struct disklabel *lp = wd->sc_dk.dk_label; 1301 int i = 0; 1302 1303 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1304 1305 for (; i < NBT_BAD; i++) { 1306 if (bt->bt_bad[i].bt_cyl == 0xffff) 1307 break; 1308 wd->sc_badsect[i] = 1309 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1310 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1311 (bt->bt_bad[i].bt_trksec & 0xff); 1312 } 1313 for (; i < NBT_BAD+1; i++) 1314 wd->sc_badsect[i] = -1; 1315 } 1316 #endif 1317 1318 int 1319 wd_get_params(wd, flags, params) 1320 struct wd_softc *wd; 1321 u_int8_t flags; 1322 struct ataparams *params; 1323 { 1324 switch (ata_get_params(wd->drvp, flags, params)) { 1325 case CMD_AGAIN: 1326 return 1; 1327 case CMD_ERR: 1328 /* 1329 * We `know' there's a drive here; just assume it's old. 1330 * This geometry is only used to read the MBR and print a 1331 * (false) attach message. 1332 */ 1333 strncpy(params->atap_model, "ST506", 1334 sizeof params->atap_model); 1335 params->atap_config = ATA_CFG_FIXED; 1336 params->atap_cylinders = 1024; 1337 params->atap_heads = 8; 1338 params->atap_sectors = 17; 1339 params->atap_multi = 1; 1340 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1341 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1342 return 0; 1343 case CMD_OK: 1344 return 0; 1345 default: 1346 panic("wd_get_params: bad return code from ata_get_params"); 1347 /* NOTREACHED */ 1348 } 1349 } 1350 1351 void 1352 wd_flushcache(wd, flags) 1353 struct wd_softc *wd; 1354 int flags; 1355 { 1356 struct wdc_command wdc_c; 1357 1358 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1359 return; 1360 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1361 wdc_c.r_command = WDCC_FLUSHCACHE; 1362 wdc_c.r_st_bmask = WDCS_DRDY; 1363 wdc_c.r_st_pmask = WDCS_DRDY; 1364 wdc_c.flags = flags; 1365 wdc_c.timeout = 30000; /* 30s timeout */ 1366 if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1367 printf("%s: flush cache command didn't complete\n", 1368 wd->sc_dev.dv_xname); 1369 } 1370 if (wdc_c.flags & AT_TIMEOU) { 1371 printf("%s: flush cache command timeout\n", 1372 wd->sc_dev.dv_xname); 1373 } 1374 if (wdc_c.flags & AT_DF) { 1375 printf("%s: flush cache command: drive fault\n", 1376 wd->sc_dev.dv_xname); 1377 } 1378 /* 1379 * Ignore error register, it shouldn't report anything else 1380 * than COMMAND ABORTED, which means the device doesn't support 1381 * flush cache 1382 */ 1383 } 1384 1385 void 1386 wd_shutdown(arg) 1387 void *arg; 1388 { 1389 struct wd_softc *wd = arg; 1390 wd_flushcache(wd, AT_POLL); 1391 } 1392 1393 /* 1394 * Allocate space for a ioctl queue structure. Mostly taken from 1395 * scsipi_ioctl.c 1396 */ 1397 struct wd_ioctl * 1398 wi_get() 1399 { 1400 struct wd_ioctl *wi; 1401 int s; 1402 1403 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK); 1404 memset(wi, 0, sizeof (struct wd_ioctl)); 1405 s = splbio(); 1406 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1407 splx(s); 1408 return (wi); 1409 } 1410 1411 /* 1412 * Free an ioctl structure and remove it from our list 1413 */ 1414 1415 void 1416 wi_free(wi) 1417 struct wd_ioctl *wi; 1418 { 1419 int s; 1420 1421 s = splbio(); 1422 LIST_REMOVE(wi, wi_list); 1423 splx(s); 1424 free(wi, M_TEMP); 1425 } 1426 1427 /* 1428 * Find a wd_ioctl structure based on the struct buf. 1429 */ 1430 1431 struct wd_ioctl * 1432 wi_find(bp) 1433 struct buf *bp; 1434 { 1435 struct wd_ioctl *wi; 1436 int s; 1437 1438 s = splbio(); 1439 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1440 if (bp == &wi->wi_bp) 1441 break; 1442 splx(s); 1443 return (wi); 1444 } 1445 1446 /* 1447 * Ioctl pseudo strategy routine 1448 * 1449 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1450 * happens here is: 1451 * 1452 * - wdioctl() queues a wd_ioctl structure. 1453 * 1454 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1455 * user space I/O is required. If physio() is called, physio() eventually 1456 * calls wdioctlstrategy(). 1457 * 1458 * - In either case, wdioctlstrategy() calls wdc_exec_command() 1459 * to perform the actual command 1460 * 1461 * The reason for the use of the pseudo strategy routine is because 1462 * when doing I/O to/from user space, physio _really_ wants to be in 1463 * the loop. We could put the entire buffer into the ioctl request 1464 * structure, but that won't scale if we want to do things like download 1465 * microcode. 1466 */ 1467 1468 void 1469 wdioctlstrategy(bp) 1470 struct buf *bp; 1471 { 1472 struct wd_ioctl *wi; 1473 struct wdc_command wdc_c; 1474 int error = 0; 1475 1476 wi = wi_find(bp); 1477 if (wi == NULL) { 1478 printf("user_strat: No ioctl\n"); 1479 error = EINVAL; 1480 goto bad; 1481 } 1482 1483 memset(&wdc_c, 0, sizeof(wdc_c)); 1484 1485 /* 1486 * Abort if physio broke up the transfer 1487 */ 1488 1489 if (bp->b_bcount != wi->wi_atareq.datalen) { 1490 printf("physio split wd ioctl request... cannot proceed\n"); 1491 error = EIO; 1492 goto bad; 1493 } 1494 1495 /* 1496 * Abort if we didn't get a buffer size that was a multiple of 1497 * our sector size (or was larger than NBBY) 1498 */ 1499 1500 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1501 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1502 (1 << NBBY)) { 1503 error = EINVAL; 1504 goto bad; 1505 } 1506 1507 /* 1508 * Make sure a timeout was supplied in the ioctl request 1509 */ 1510 1511 if (wi->wi_atareq.timeout == 0) { 1512 error = EINVAL; 1513 goto bad; 1514 } 1515 1516 if (wi->wi_atareq.flags & ATACMD_READ) 1517 wdc_c.flags |= AT_READ; 1518 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1519 wdc_c.flags |= AT_WRITE; 1520 1521 if (wi->wi_atareq.flags & ATACMD_READREG) 1522 wdc_c.flags |= AT_READREG; 1523 1524 wdc_c.flags |= AT_WAIT; 1525 1526 wdc_c.timeout = wi->wi_atareq.timeout; 1527 wdc_c.r_command = wi->wi_atareq.command; 1528 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1529 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1530 wdc_c.r_sector = wi->wi_atareq.sec_num; 1531 wdc_c.r_count = wi->wi_atareq.sec_count; 1532 wdc_c.r_precomp = wi->wi_atareq.features; 1533 wdc_c.r_st_bmask = WDCS_DRDY; 1534 wdc_c.r_st_pmask = WDCS_DRDY; 1535 wdc_c.data = wi->wi_bp.b_data; 1536 wdc_c.bcount = wi->wi_bp.b_bcount; 1537 1538 if (wdc_exec_command(wi->wi_softc->drvp, &wdc_c) != WDC_COMPLETE) { 1539 wi->wi_atareq.retsts = ATACMD_ERROR; 1540 goto bad; 1541 } 1542 1543 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1544 if (wdc_c.flags & AT_ERROR) { 1545 wi->wi_atareq.retsts = ATACMD_ERROR; 1546 wi->wi_atareq.error = wdc_c.r_error; 1547 } else if (wdc_c.flags & AT_DF) 1548 wi->wi_atareq.retsts = ATACMD_DF; 1549 else 1550 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1551 } else { 1552 wi->wi_atareq.retsts = ATACMD_OK; 1553 if (wi->wi_atareq.flags & ATACMD_READREG) { 1554 wi->wi_atareq.head = wdc_c.r_head ; 1555 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1556 wi->wi_atareq.sec_num = wdc_c.r_sector; 1557 wi->wi_atareq.sec_count = wdc_c.r_count; 1558 wi->wi_atareq.features = wdc_c.r_precomp; 1559 wi->wi_atareq.error = wdc_c.r_error; 1560 } 1561 } 1562 1563 bp->b_error = 0; 1564 biodone(bp); 1565 return; 1566 bad: 1567 bp->b_flags |= B_ERROR; 1568 bp->b_error = error; 1569 biodone(bp); 1570 } 1571
Indexes created Fri Sep 26 20:09:58 GMT 2025