wd.c revision 1.207
1 /* $NetBSD: wd.c,v 1.207 2000/07/05 23:31:13 thorpej 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 = wd_cd.cd_devs[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 unit, part; 717 int error; 718 719 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 720 unit = WDUNIT(dev); 721 if (unit >= wd_cd.cd_ndevs) 722 return ENXIO; 723 wd = wd_cd.cd_devs[unit]; 724 if (wd == NULL) 725 return ENXIO; 726 727 /* 728 * If this is the first open of this device, add a reference 729 * to the adapter. 730 */ 731 if (wd->sc_dk.dk_openmask == 0 && 732 (error = wdc_ata_addref(wd->drvp)) != 0) 733 return (error); 734 735 if ((error = wdlock(wd)) != 0) 736 goto bad4; 737 738 if (wd->sc_dk.dk_openmask != 0) { 739 /* 740 * If any partition is open, but the disk has been invalidated, 741 * disallow further opens. 742 */ 743 if ((wd->sc_flags & WDF_LOADED) == 0) { 744 error = EIO; 745 goto bad3; 746 } 747 } else { 748 if ((wd->sc_flags & WDF_LOADED) == 0) { 749 wd->sc_flags |= WDF_LOADED; 750 751 /* Load the physical device parameters. */ 752 wd_get_params(wd, AT_WAIT, &wd->sc_params); 753 754 /* Load the partition info if not already loaded. */ 755 wdgetdisklabel(wd); 756 } 757 } 758 759 part = WDPART(dev); 760 761 /* Check that the partition exists. */ 762 if (part != RAW_PART && 763 (part >= wd->sc_dk.dk_label->d_npartitions || 764 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 765 error = ENXIO; 766 goto bad; 767 } 768 769 /* Insure only one open at a time. */ 770 switch (fmt) { 771 case S_IFCHR: 772 wd->sc_dk.dk_copenmask |= (1 << part); 773 break; 774 case S_IFBLK: 775 wd->sc_dk.dk_bopenmask |= (1 << part); 776 break; 777 } 778 wd->sc_dk.dk_openmask = 779 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 780 781 wdunlock(wd); 782 return 0; 783 784 bad: 785 if (wd->sc_dk.dk_openmask == 0) { 786 } 787 788 bad3: 789 wdunlock(wd); 790 bad4: 791 if (wd->sc_dk.dk_openmask == 0) 792 wdc_ata_delref(wd->drvp); 793 return error; 794 } 795 796 int 797 wdclose(dev, flag, fmt, p) 798 dev_t dev; 799 int flag, fmt; 800 struct proc *p; 801 { 802 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 803 int part = WDPART(dev); 804 int error; 805 806 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 807 if ((error = wdlock(wd)) != 0) 808 return error; 809 810 switch (fmt) { 811 case S_IFCHR: 812 wd->sc_dk.dk_copenmask &= ~(1 << part); 813 break; 814 case S_IFBLK: 815 wd->sc_dk.dk_bopenmask &= ~(1 << part); 816 break; 817 } 818 wd->sc_dk.dk_openmask = 819 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 820 821 if (wd->sc_dk.dk_openmask == 0) { 822 wd_flushcache(wd, AT_WAIT); 823 /* XXXX Must wait for I/O to complete! */ 824 825 if (! (wd->sc_flags & WDF_KLABEL)) 826 wd->sc_flags &= ~WDF_LOADED; 827 828 wdc_ata_delref(wd->drvp); 829 } 830 831 wdunlock(wd); 832 return 0; 833 } 834 835 void 836 wdgetdefaultlabel(wd, lp) 837 struct wd_softc *wd; 838 struct disklabel *lp; 839 { 840 841 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 842 memset(lp, 0, sizeof(struct disklabel)); 843 844 lp->d_secsize = DEV_BSIZE; 845 lp->d_ntracks = wd->sc_params.atap_heads; 846 lp->d_nsectors = wd->sc_params.atap_sectors; 847 lp->d_ncylinders = wd->sc_params.atap_cylinders; 848 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 849 850 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 851 lp->d_type = DTYPE_ST506; 852 else 853 lp->d_type = DTYPE_ESDI; 854 855 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 856 strncpy(lp->d_packname, "fictitious", 16); 857 lp->d_secperunit = wd->sc_capacity; 858 lp->d_rpm = 3600; 859 lp->d_interleave = 1; 860 lp->d_flags = 0; 861 862 lp->d_partitions[RAW_PART].p_offset = 0; 863 lp->d_partitions[RAW_PART].p_size = 864 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 865 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 866 lp->d_npartitions = RAW_PART + 1; 867 868 lp->d_magic = DISKMAGIC; 869 lp->d_magic2 = DISKMAGIC; 870 lp->d_checksum = dkcksum(lp); 871 } 872 873 /* 874 * Fabricate a default disk label, and try to read the correct one. 875 */ 876 void 877 wdgetdisklabel(wd) 878 struct wd_softc *wd; 879 { 880 struct disklabel *lp = wd->sc_dk.dk_label; 881 char *errstring; 882 883 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 884 885 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 886 887 wdgetdefaultlabel(wd, lp); 888 889 wd->sc_badsect[0] = -1; 890 891 if (wd->drvp->state > RECAL) 892 wd->drvp->drive_flags |= DRIVE_RESET; 893 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 894 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 895 if (errstring) { 896 /* 897 * This probably happened because the drive's default 898 * geometry doesn't match the DOS geometry. We 899 * assume the DOS geometry is now in the label and try 900 * again. XXX This is a kluge. 901 */ 902 if (wd->drvp->state > RECAL) 903 wd->drvp->drive_flags |= DRIVE_RESET; 904 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 905 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 906 } 907 if (errstring) { 908 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 909 return; 910 } 911 912 if (wd->drvp->state > RECAL) 913 wd->drvp->drive_flags |= DRIVE_RESET; 914 #ifdef HAS_BAD144_HANDLING 915 if ((lp->d_flags & D_BADSECT) != 0) 916 bad144intern(wd); 917 #endif 918 } 919 920 int 921 wdioctl(dev, xfer, addr, flag, p) 922 dev_t dev; 923 u_long xfer; 924 caddr_t addr; 925 int flag; 926 struct proc *p; 927 { 928 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 929 int error; 930 931 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 932 933 if ((wd->sc_flags & WDF_LOADED) == 0) 934 return EIO; 935 936 switch (xfer) { 937 #ifdef HAS_BAD144_HANDLING 938 case DIOCSBAD: 939 if ((flag & FWRITE) == 0) 940 return EBADF; 941 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 942 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 943 bad144intern(wd); 944 return 0; 945 #endif 946 947 case DIOCGDINFO: 948 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 949 return 0; 950 951 case DIOCGPART: 952 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 953 ((struct partinfo *)addr)->part = 954 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 955 return 0; 956 957 case DIOCWDINFO: 958 case DIOCSDINFO: 959 if ((flag & FWRITE) == 0) 960 return EBADF; 961 962 if ((error = wdlock(wd)) != 0) 963 return error; 964 wd->sc_flags |= WDF_LABELLING; 965 966 error = setdisklabel(wd->sc_dk.dk_label, 967 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 968 wd->sc_dk.dk_cpulabel); 969 if (error == 0) { 970 if (wd->drvp->state > RECAL) 971 wd->drvp->drive_flags |= DRIVE_RESET; 972 if (xfer == DIOCWDINFO) 973 error = writedisklabel(WDLABELDEV(dev), 974 wdstrategy, wd->sc_dk.dk_label, 975 wd->sc_dk.dk_cpulabel); 976 } 977 978 wd->sc_flags &= ~WDF_LABELLING; 979 wdunlock(wd); 980 return error; 981 982 case DIOCKLABEL: 983 if (*(int *)addr) 984 wd->sc_flags |= WDF_KLABEL; 985 else 986 wd->sc_flags &= ~WDF_KLABEL; 987 return 0; 988 989 case DIOCWLABEL: 990 if ((flag & FWRITE) == 0) 991 return EBADF; 992 if (*(int *)addr) 993 wd->sc_flags |= WDF_WLABEL; 994 else 995 wd->sc_flags &= ~WDF_WLABEL; 996 return 0; 997 998 case DIOCGDEFLABEL: 999 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1000 return 0; 1001 1002 #ifdef notyet 1003 case DIOCWFORMAT: 1004 if ((flag & FWRITE) == 0) 1005 return EBADF; 1006 { 1007 register struct format_op *fop; 1008 struct iovec aiov; 1009 struct uio auio; 1010 1011 fop = (struct format_op *)addr; 1012 aiov.iov_base = fop->df_buf; 1013 aiov.iov_len = fop->df_count; 1014 auio.uio_iov = &aiov; 1015 auio.uio_iovcnt = 1; 1016 auio.uio_resid = fop->df_count; 1017 auio.uio_segflg = 0; 1018 auio.uio_offset = 1019 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1020 auio.uio_procp = p; 1021 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1022 &auio); 1023 fop->df_count -= auio.uio_resid; 1024 fop->df_reg[0] = wdc->sc_status; 1025 fop->df_reg[1] = wdc->sc_error; 1026 return error; 1027 } 1028 #endif 1029 1030 case ATAIOCCOMMAND: 1031 /* 1032 * Make sure this command is (relatively) safe first 1033 */ 1034 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1035 (flag & FWRITE) == 0) 1036 return (EBADF); 1037 { 1038 struct wd_ioctl *wi; 1039 atareq_t *atareq = (atareq_t *) addr; 1040 int error; 1041 1042 wi = wi_get(); 1043 wi->wi_softc = wd; 1044 wi->wi_atareq = *atareq; 1045 1046 if (atareq->datalen && atareq->flags & 1047 (ATACMD_READ | ATACMD_WRITE)) { 1048 wi->wi_iov.iov_base = atareq->databuf; 1049 wi->wi_iov.iov_len = atareq->datalen; 1050 wi->wi_uio.uio_iov = &wi->wi_iov; 1051 wi->wi_uio.uio_iovcnt = 1; 1052 wi->wi_uio.uio_resid = atareq->datalen; 1053 wi->wi_uio.uio_offset = 0; 1054 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1055 wi->wi_uio.uio_rw = 1056 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1057 wi->wi_uio.uio_procp = p; 1058 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1059 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1060 minphys, &wi->wi_uio); 1061 } else { 1062 /* No need to call physio if we don't have any 1063 user data */ 1064 wi->wi_bp.b_flags = 0; 1065 wi->wi_bp.b_data = 0; 1066 wi->wi_bp.b_bcount = 0; 1067 wi->wi_bp.b_dev = 0; 1068 wi->wi_bp.b_proc = p; 1069 wdioctlstrategy(&wi->wi_bp); 1070 error = wi->wi_bp.b_error; 1071 } 1072 *atareq = wi->wi_atareq; 1073 wi_free(wi); 1074 return(error); 1075 } 1076 1077 default: 1078 return ENOTTY; 1079 } 1080 1081 #ifdef DIAGNOSTIC 1082 panic("wdioctl: impossible"); 1083 #endif 1084 } 1085 1086 #ifdef B_FORMAT 1087 int 1088 wdformat(struct buf *bp) 1089 { 1090 1091 bp->b_flags |= B_FORMAT; 1092 return wdstrategy(bp); 1093 } 1094 #endif 1095 1096 int 1097 wdsize(dev) 1098 dev_t dev; 1099 { 1100 struct wd_softc *wd; 1101 int part, unit, omask; 1102 int size; 1103 1104 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1105 1106 unit = WDUNIT(dev); 1107 if (unit >= wd_cd.cd_ndevs) 1108 return (-1); 1109 wd = wd_cd.cd_devs[unit]; 1110 if (wd == NULL) 1111 return (-1); 1112 1113 part = WDPART(dev); 1114 omask = wd->sc_dk.dk_openmask & (1 << part); 1115 1116 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1117 return (-1); 1118 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1119 size = -1; 1120 else 1121 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1122 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1123 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1124 return (-1); 1125 return (size); 1126 } 1127 1128 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1129 static int wddoingadump = 0; 1130 static int wddumprecalibrated = 0; 1131 static int wddumpmulti = 1; 1132 1133 /* 1134 * Dump core after a system crash. 1135 */ 1136 int 1137 wddump(dev, blkno, va, size) 1138 dev_t dev; 1139 daddr_t blkno; 1140 caddr_t va; 1141 size_t size; 1142 { 1143 struct wd_softc *wd; /* disk unit to do the I/O */ 1144 struct disklabel *lp; /* disk's disklabel */ 1145 int unit, part; 1146 int nblks; /* total number of sectors left to write */ 1147 int err; 1148 char errbuf[256]; 1149 1150 /* Check if recursive dump; if so, punt. */ 1151 if (wddoingadump) 1152 return EFAULT; 1153 wddoingadump = 1; 1154 1155 unit = WDUNIT(dev); 1156 if (unit >= wd_cd.cd_ndevs) 1157 return ENXIO; 1158 wd = wd_cd.cd_devs[unit]; 1159 if (wd == (struct wd_softc *)0) 1160 return ENXIO; 1161 1162 part = WDPART(dev); 1163 1164 /* Make sure it was initialized. */ 1165 if (wd->drvp->state < READY) 1166 return ENXIO; 1167 1168 /* Convert to disk sectors. Request must be a multiple of size. */ 1169 lp = wd->sc_dk.dk_label; 1170 if ((size % lp->d_secsize) != 0) 1171 return EFAULT; 1172 nblks = size / lp->d_secsize; 1173 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1174 1175 /* Check transfer bounds against partition size. */ 1176 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1177 return EINVAL; 1178 1179 /* Offset block number to start of partition. */ 1180 blkno += lp->d_partitions[part].p_offset; 1181 1182 /* Recalibrate, if first dump transfer. */ 1183 if (wddumprecalibrated == 0) { 1184 wddumpmulti = wd->sc_multi; 1185 wddumprecalibrated = 1; 1186 wd->drvp->state = RESET; 1187 } 1188 1189 while (nblks > 0) { 1190 again: 1191 wd->sc_wdc_bio.blkno = blkno; 1192 wd->sc_wdc_bio.flags = ATA_POLL; 1193 if (wddumpmulti == 1) 1194 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1195 if (wd->sc_flags & WDF_LBA) 1196 wd->sc_wdc_bio.flags |= ATA_LBA; 1197 wd->sc_wdc_bio.bcount = 1198 min(nblks, wddumpmulti) * lp->d_secsize; 1199 wd->sc_wdc_bio.databuf = va; 1200 #ifndef WD_DUMP_NOT_TRUSTED 1201 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1202 case WDC_TRY_AGAIN: 1203 panic("wddump: try again"); 1204 break; 1205 case WDC_QUEUED: 1206 panic("wddump: polled command has been queued"); 1207 break; 1208 case WDC_COMPLETE: 1209 break; 1210 } 1211 switch(wd->sc_wdc_bio.error) { 1212 case TIMEOUT: 1213 printf("wddump: device timed out"); 1214 err = EIO; 1215 break; 1216 case ERR_DF: 1217 printf("wddump: drive fault"); 1218 err = EIO; 1219 break; 1220 case ERR_DMA: 1221 printf("wddump: DMA error"); 1222 err = EIO; 1223 break; 1224 case ERROR: 1225 errbuf[0] = '\0'; 1226 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 1227 printf("wddump: %s", errbuf); 1228 err = EIO; 1229 break; 1230 case NOERROR: 1231 err = 0; 1232 break; 1233 default: 1234 panic("wddump: unknown error type"); 1235 } 1236 if (err != 0) { 1237 if (wddumpmulti != 1) { 1238 wddumpmulti = 1; /* retry in single-sector */ 1239 printf(", retrying\n"); 1240 goto again; 1241 } 1242 printf("\n"); 1243 return err; 1244 } 1245 #else /* WD_DUMP_NOT_TRUSTED */ 1246 /* Let's just talk about this first... */ 1247 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1248 unit, va, cylin, head, sector); 1249 delay(500 * 1000); /* half a second */ 1250 #endif 1251 1252 /* update block count */ 1253 nblks -= min(nblks, wddumpmulti); 1254 blkno += min(nblks, wddumpmulti); 1255 va += min(nblks, wddumpmulti) * lp->d_secsize; 1256 } 1257 1258 wddoingadump = 0; 1259 return 0; 1260 } 1261 1262 #ifdef HAS_BAD144_HANDLING 1263 /* 1264 * Internalize the bad sector table. 1265 */ 1266 void 1267 bad144intern(wd) 1268 struct wd_softc *wd; 1269 { 1270 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1271 struct disklabel *lp = wd->sc_dk.dk_label; 1272 int i = 0; 1273 1274 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1275 1276 for (; i < NBT_BAD; i++) { 1277 if (bt->bt_bad[i].bt_cyl == 0xffff) 1278 break; 1279 wd->sc_badsect[i] = 1280 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1281 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1282 (bt->bt_bad[i].bt_trksec & 0xff); 1283 } 1284 for (; i < NBT_BAD+1; i++) 1285 wd->sc_badsect[i] = -1; 1286 } 1287 #endif 1288 1289 int 1290 wd_get_params(wd, flags, params) 1291 struct wd_softc *wd; 1292 u_int8_t flags; 1293 struct ataparams *params; 1294 { 1295 switch (ata_get_params(wd->drvp, flags, params)) { 1296 case CMD_AGAIN: 1297 return 1; 1298 case CMD_ERR: 1299 /* 1300 * We `know' there's a drive here; just assume it's old. 1301 * This geometry is only used to read the MBR and print a 1302 * (false) attach message. 1303 */ 1304 strncpy(params->atap_model, "ST506", 1305 sizeof params->atap_model); 1306 params->atap_config = ATA_CFG_FIXED; 1307 params->atap_cylinders = 1024; 1308 params->atap_heads = 8; 1309 params->atap_sectors = 17; 1310 params->atap_multi = 1; 1311 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1312 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1313 return 0; 1314 case CMD_OK: 1315 return 0; 1316 default: 1317 panic("wd_get_params: bad return code from ata_get_params"); 1318 /* NOTREACHED */ 1319 } 1320 } 1321 1322 void 1323 wd_flushcache(wd, flags) 1324 struct wd_softc *wd; 1325 int flags; 1326 { 1327 struct wdc_command wdc_c; 1328 1329 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1330 return; 1331 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1332 wdc_c.r_command = WDCC_FLUSHCACHE; 1333 wdc_c.r_st_bmask = WDCS_DRDY; 1334 wdc_c.r_st_pmask = WDCS_DRDY; 1335 wdc_c.flags = flags; 1336 wdc_c.timeout = 30000; /* 30s timeout */ 1337 if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1338 printf("%s: flush cache command didn't complete\n", 1339 wd->sc_dev.dv_xname); 1340 } 1341 if (wdc_c.flags & AT_TIMEOU) { 1342 printf("%s: flush cache command timeout\n", 1343 wd->sc_dev.dv_xname); 1344 } 1345 if (wdc_c.flags & AT_DF) { 1346 printf("%s: flush cache command: drive fault\n", 1347 wd->sc_dev.dv_xname); 1348 } 1349 /* 1350 * Ignore error register, it shouldn't report anything else 1351 * than COMMAND ABORTED, which means the device doesn't support 1352 * flush cache 1353 */ 1354 } 1355 1356 void 1357 wd_shutdown(arg) 1358 void *arg; 1359 { 1360 struct wd_softc *wd = arg; 1361 wd_flushcache(wd, AT_POLL); 1362 } 1363 1364 /* 1365 * Allocate space for a ioctl queue structure. Mostly taken from 1366 * scsipi_ioctl.c 1367 */ 1368 struct wd_ioctl * 1369 wi_get() 1370 { 1371 struct wd_ioctl *wi; 1372 int s; 1373 1374 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK); 1375 memset(wi, 0, sizeof (struct wd_ioctl)); 1376 s = splbio(); 1377 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1378 splx(s); 1379 return (wi); 1380 } 1381 1382 /* 1383 * Free an ioctl structure and remove it from our list 1384 */ 1385 1386 void 1387 wi_free(wi) 1388 struct wd_ioctl *wi; 1389 { 1390 int s; 1391 1392 s = splbio(); 1393 LIST_REMOVE(wi, wi_list); 1394 splx(s); 1395 free(wi, M_TEMP); 1396 } 1397 1398 /* 1399 * Find a wd_ioctl structure based on the struct buf. 1400 */ 1401 1402 struct wd_ioctl * 1403 wi_find(bp) 1404 struct buf *bp; 1405 { 1406 struct wd_ioctl *wi; 1407 int s; 1408 1409 s = splbio(); 1410 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1411 if (bp == &wi->wi_bp) 1412 break; 1413 splx(s); 1414 return (wi); 1415 } 1416 1417 /* 1418 * Ioctl pseudo strategy routine 1419 * 1420 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1421 * happens here is: 1422 * 1423 * - wdioctl() queues a wd_ioctl structure. 1424 * 1425 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1426 * user space I/O is required. If physio() is called, physio() eventually 1427 * calls wdioctlstrategy(). 1428 * 1429 * - In either case, wdioctlstrategy() calls wdc_exec_command() 1430 * to perform the actual command 1431 * 1432 * The reason for the use of the pseudo strategy routine is because 1433 * when doing I/O to/from user space, physio _really_ wants to be in 1434 * the loop. We could put the entire buffer into the ioctl request 1435 * structure, but that won't scale if we want to do things like download 1436 * microcode. 1437 */ 1438 1439 void 1440 wdioctlstrategy(bp) 1441 struct buf *bp; 1442 { 1443 struct wd_ioctl *wi; 1444 struct wdc_command wdc_c; 1445 int error = 0; 1446 1447 wi = wi_find(bp); 1448 if (wi == NULL) { 1449 printf("user_strat: No ioctl\n"); 1450 error = EINVAL; 1451 goto bad; 1452 } 1453 1454 memset(&wdc_c, 0, sizeof(wdc_c)); 1455 1456 /* 1457 * Abort if physio broke up the transfer 1458 */ 1459 1460 if (bp->b_bcount != wi->wi_atareq.datalen) { 1461 printf("physio split wd ioctl request... cannot proceed\n"); 1462 error = EIO; 1463 goto bad; 1464 } 1465 1466 /* 1467 * Abort if we didn't get a buffer size that was a multiple of 1468 * our sector size (or was larger than NBBY) 1469 */ 1470 1471 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1472 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1473 (1 << NBBY)) { 1474 error = EINVAL; 1475 goto bad; 1476 } 1477 1478 /* 1479 * Make sure a timeout was supplied in the ioctl request 1480 */ 1481 1482 if (wi->wi_atareq.timeout == 0) { 1483 error = EINVAL; 1484 goto bad; 1485 } 1486 1487 if (wi->wi_atareq.flags & ATACMD_READ) 1488 wdc_c.flags |= AT_READ; 1489 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1490 wdc_c.flags |= AT_WRITE; 1491 1492 if (wi->wi_atareq.flags & ATACMD_READREG) 1493 wdc_c.flags |= AT_READREG; 1494 1495 wdc_c.flags |= AT_WAIT; 1496 1497 wdc_c.timeout = wi->wi_atareq.timeout; 1498 wdc_c.r_command = wi->wi_atareq.command; 1499 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1500 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1501 wdc_c.r_sector = wi->wi_atareq.sec_num; 1502 wdc_c.r_count = wi->wi_atareq.sec_count; 1503 wdc_c.r_precomp = wi->wi_atareq.features; 1504 wdc_c.r_st_bmask = WDCS_DRDY; 1505 wdc_c.r_st_pmask = WDCS_DRDY; 1506 wdc_c.data = wi->wi_bp.b_data; 1507 wdc_c.bcount = wi->wi_bp.b_bcount; 1508 1509 if (wdc_exec_command(wi->wi_softc->drvp, &wdc_c) != WDC_COMPLETE) { 1510 wi->wi_atareq.retsts = ATACMD_ERROR; 1511 goto bad; 1512 } 1513 1514 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1515 if (wdc_c.flags & AT_ERROR) { 1516 wi->wi_atareq.retsts = ATACMD_ERROR; 1517 wi->wi_atareq.error = wdc_c.r_error; 1518 } else if (wdc_c.flags & AT_DF) 1519 wi->wi_atareq.retsts = ATACMD_DF; 1520 else 1521 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1522 } else { 1523 wi->wi_atareq.retsts = ATACMD_OK; 1524 if (wi->wi_atareq.flags & ATACMD_READREG) { 1525 wi->wi_atareq.head = wdc_c.r_head ; 1526 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1527 wi->wi_atareq.sec_num = wdc_c.r_sector; 1528 wi->wi_atareq.sec_count = wdc_c.r_count; 1529 wi->wi_atareq.features = wdc_c.r_precomp; 1530 wi->wi_atareq.error = wdc_c.r_error; 1531 } 1532 } 1533 1534 bp->b_error = 0; 1535 biodone(bp); 1536 return; 1537 bad: 1538 bp->b_flags |= B_ERROR; 1539 bp->b_error = error; 1540 biodone(bp); 1541 } 1542
Indexes created Mon Oct 20 03:09:53 GMT 2025