wd.c revision 1.183
1 /* $NetBSD: wd.c,v 1.183 1998/10/20 17:00:25 bouyer 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 #define WDCDEBUG 69 70 #include "rnd.h" 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/kernel.h> 75 #include <sys/conf.h> 76 #include <sys/file.h> 77 #include <sys/stat.h> 78 #include <sys/ioctl.h> 79 #include <sys/buf.h> 80 #include <sys/uio.h> 81 #include <sys/malloc.h> 82 #include <sys/device.h> 83 #include <sys/disklabel.h> 84 #include <sys/disk.h> 85 #include <sys/syslog.h> 86 #include <sys/proc.h> 87 #if NRND > 0 88 #include <sys/rnd.h> 89 #endif 90 91 #include <vm/vm.h> 92 93 #include <machine/intr.h> 94 #include <machine/bus.h> 95 96 #include <dev/ata/atareg.h> 97 #include <dev/ata/atavar.h> 98 #include <dev/ata/wdvar.h> 99 #include <dev/ic/wdcreg.h> 100 #include "locators.h" 101 102 #define WAITTIME (4 * hz) /* time to wait for a completion */ 103 #define WDIORETRIES 5 /* number of retries before giving up */ 104 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 105 106 #define WDUNIT(dev) DISKUNIT(dev) 107 #define WDPART(dev) DISKPART(dev) 108 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 109 110 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 111 112 #define DEBUG_INTR 0x01 113 #define DEBUG_XFERS 0x02 114 #define DEBUG_STATUS 0x04 115 #define DEBUG_FUNCS 0x08 116 #define DEBUG_PROBE 0x10 117 #ifdef WDCDEBUG 118 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 119 #define WDCDEBUG_PRINT(args, level) \ 120 if (wdcdebug_wd_mask & (level)) \ 121 printf args 122 #else 123 #define WDCDEBUG_PRINT(args, level) 124 #endif 125 126 struct wd_softc { 127 /* General disk infos */ 128 struct device sc_dev; 129 struct disk sc_dk; 130 struct buf sc_q; 131 /* IDE disk soft states */ 132 struct ata_bio sc_wdc_bio; /* current transfert */ 133 struct buf *sc_bp; /* buf being transfered */ 134 void *wdc_softc; /* pointer to our parent */ 135 struct ata_drive_datas *drvp; /* Our controller's infos */ 136 int openings; 137 struct ataparams sc_params;/* drive characteistics found */ 138 int sc_flags; 139 #define WDF_LOCKED 0x01 140 #define WDF_WANTED 0x02 141 #define WDF_WLABEL 0x04 /* label is writable */ 142 #define WDF_LABELLING 0x08 /* writing label */ 143 /* 144 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 145 * more fully implemented. 146 */ 147 #define WDF_LOADED 0x10 /* parameters loaded */ 148 #define WDF_WAIT 0x20 /* waiting for resources */ 149 #define WDF_LBA 0x40 /* using LBA mode */ 150 int sc_capacity; 151 int cyl; /* actual drive parameters */ 152 int heads; 153 int sectors; 154 int retries; /* number of xfer retry */ 155 #if NRND > 0 156 rndsource_element_t rnd_source; 157 #endif 158 }; 159 160 #define sc_drive sc_wdc_bio.drive 161 #define sc_mode sc_wdc_bio.mode 162 #define sc_multi sc_wdc_bio.multi 163 #define sc_badsect sc_wdc_bio.badsect 164 165 int wdprobe __P((struct device *, struct cfdata *, void *)); 166 void wdattach __P((struct device *, struct device *, void *)); 167 int wdprint __P((void *, char *)); 168 169 struct cfattach wd_ca = { 170 sizeof(struct wd_softc), wdprobe, wdattach 171 }; 172 173 extern struct cfdriver wd_cd; 174 175 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 176 void wdgetdisklabel __P((struct wd_softc *)); 177 void wdstrategy __P((struct buf *)); 178 void wdstart __P((void *)); 179 void __wdstart __P((struct wd_softc*, struct buf *)); 180 void wdrestart __P((void*)); 181 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 182 183 struct dkdriver wddkdriver = { wdstrategy }; 184 185 /* XXX: these should go elsewhere */ 186 cdev_decl(wd); 187 bdev_decl(wd); 188 189 #ifdef HAS_BAD144_HANDLING 190 static void bad144intern __P((struct wd_softc *)); 191 #endif 192 int wdlock __P((struct wd_softc *)); 193 void wdunlock __P((struct wd_softc *)); 194 void print_wderror __P((int, char*)); 195 196 int 197 wdprobe(parent, match, aux) 198 struct device *parent; 199 struct cfdata *match; 200 201 void *aux; 202 { 203 struct ata_atapi_attach *aa_link = aux; 204 205 if (aa_link == NULL) 206 return 0; 207 if (aa_link->aa_type != T_ATA) 208 return 0; 209 210 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 211 match->cf_loc[ATACF_CHANNEL] != aa_link->aa_channel) 212 return 0; 213 214 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 215 match->cf_loc[ATACF_DRIVE] != aa_link->aa_drv_data->drive) 216 return 0; 217 return 1; 218 } 219 220 void 221 wdattach(parent, self, aux) 222 struct device *parent, *self; 223 void *aux; 224 { 225 struct wd_softc *wd = (void *)self; 226 struct ata_atapi_attach *aa_link= aux; 227 int i, blank; 228 char buf[41], c, *p, *q; 229 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 230 231 wd->openings = aa_link->aa_openings; 232 wd->drvp = aa_link->aa_drv_data;; 233 wd->wdc_softc = parent; 234 /* give back our softc to our caller */ 235 wd->drvp->drv_softc = &wd->sc_dev; 236 237 /* read our drive info */ 238 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 239 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 240 return; 241 } 242 243 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 244 i < sizeof(wd->sc_params.atap_model); i++) { 245 c = *p++; 246 if (c == '\0') 247 break; 248 if (c != ' ') { 249 if (blank) { 250 *q++ = ' '; 251 blank = 0; 252 } 253 *q++ = c; 254 } else 255 blank = 1; 256 } 257 *q++ = '\0'; 258 259 printf(": <%s>\n", buf); 260 261 if ((wd->sc_params.atap_multi & 0xff) > 1) { 262 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 263 } else { 264 wd->sc_multi = 1; 265 } 266 267 printf("%s: using %d-sector pio transfers,", wd->sc_dev.dv_xname, 268 wd->sc_multi); 269 270 /* Prior to ATA-4, LBA was optional. */ 271 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 272 wd->sc_flags |= WDF_LBA; 273 #if 0 274 /* ATA-4 requires LBA. */ 275 if (wd->sc_params.atap_ataversion != 0xffff && 276 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 277 wd->sc_flags |= WDF_LBA; 278 #endif 279 280 if ((wd->sc_flags & WDF_LBA) != 0) { 281 printf(" lba mode\n"); 282 wd->sc_capacity = 283 (wd->sc_params.atap_capacity[1] << 16) | 284 wd->sc_params.atap_capacity[0]; 285 printf("%s: %dMB, %d cyl, %d head, %d sec, " 286 "%d bytes/sect x %d sectors\n", 287 self->dv_xname, 288 wd->sc_capacity / (1048576 / DEV_BSIZE), 289 wd->sc_params.atap_cylinders, 290 wd->sc_params.atap_heads, 291 wd->sc_params.atap_sectors, 292 DEV_BSIZE, 293 wd->sc_capacity); 294 } else { 295 printf(" chs mode\n"); 296 wd->sc_capacity = 297 wd->sc_params.atap_cylinders * 298 wd->sc_params.atap_heads * 299 wd->sc_params.atap_sectors; 300 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d " 301 "sectors\n", self->dv_xname, 302 wd->sc_capacity / (1048576 / DEV_BSIZE), 303 wd->sc_params.atap_cylinders, 304 wd->sc_params.atap_heads, 305 wd->sc_params.atap_sectors, 306 DEV_BSIZE, 307 wd->sc_capacity); 308 } 309 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 310 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 311 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 312 /* 313 * Initialize and attach the disk structure. 314 */ 315 wd->sc_dk.dk_driver = &wddkdriver; 316 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 317 disk_attach(&wd->sc_dk); 318 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 319 320 #if NRND > 0 321 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 322 #endif 323 } 324 325 /* 326 * Read/write routine for a buffer. Validates the arguments and schedules the 327 * transfer. Does not wait for the transfer to complete. 328 */ 329 void 330 wdstrategy(bp) 331 struct buf *bp; 332 { 333 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 334 int s; 335 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 336 DEBUG_XFERS); 337 338 /* Valid request? */ 339 if (bp->b_blkno < 0 || 340 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 341 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 342 bp->b_error = EINVAL; 343 goto bad; 344 } 345 346 /* If device invalidated (e.g. media change, door open), error. */ 347 if ((wd->sc_flags & WDF_LOADED) == 0) { 348 bp->b_error = EIO; 349 goto bad; 350 } 351 352 /* If it's a null transfer, return immediately. */ 353 if (bp->b_bcount == 0) 354 goto done; 355 356 /* 357 * Do bounds checking, adjust transfer. if error, process. 358 * If end of partition, just return. 359 */ 360 if (WDPART(bp->b_dev) != RAW_PART && 361 bounds_check_with_label(bp, wd->sc_dk.dk_label, 362 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 363 goto done; 364 /* Queue transfer on drive, activate drive and controller if idle. */ 365 s = splbio(); 366 disksort(&wd->sc_q, bp); 367 wdstart(wd); 368 splx(s); 369 return; 370 bad: 371 bp->b_flags |= B_ERROR; 372 done: 373 /* Toss transfer; we're done early. */ 374 bp->b_resid = bp->b_bcount; 375 biodone(bp); 376 } 377 378 /* 379 * Queue a drive for I/O. 380 */ 381 void 382 wdstart(arg) 383 void *arg; 384 { 385 struct wd_softc *wd = arg; 386 struct buf *dp, *bp=0; 387 388 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 389 DEBUG_XFERS); 390 while (wd->openings > 0) { 391 392 /* Is there a buf for us ? */ 393 dp = &wd->sc_q; 394 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 395 return; 396 dp->b_actf = bp->b_actf; 397 398 /* 399 * Make the command. First lock the device 400 */ 401 wd->openings--; 402 403 wd->retries = 0; 404 __wdstart(wd, bp); 405 } 406 } 407 408 void 409 __wdstart(wd, bp) 410 struct wd_softc *wd; 411 struct buf *bp; 412 { 413 daddr_t p_offset; 414 if (WDPART(bp->b_dev) != RAW_PART) 415 p_offset = 416 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 417 else 418 p_offset = 0; 419 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 420 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 421 wd->sc_wdc_bio.blkdone =0; 422 wd->sc_bp = bp; 423 /* 424 * If we're retrying, retry in single-sector mode. This will give us 425 * the sector number of the problem, and will eventually allow the 426 * transfert to succeed. 427 */ 428 if (wd->sc_multi == 1 || wd->retries > 0) 429 wd->sc_wdc_bio.flags = ATA_SINGLE; 430 else 431 wd->sc_wdc_bio.flags = 0; 432 if (wd->sc_flags & WDF_LBA) 433 wd->sc_wdc_bio.flags |= ATA_LBA; 434 if (bp->b_flags & B_READ) 435 wd->sc_wdc_bio.flags |= ATA_READ; 436 wd->sc_wdc_bio.bcount = bp->b_bcount; 437 wd->sc_wdc_bio.databuf = bp->b_data; 438 /* Instrumentation. */ 439 disk_busy(&wd->sc_dk); 440 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 441 case WDC_TRY_AGAIN: 442 timeout(wdrestart, wd, hz); 443 break; 444 case WDC_QUEUED: 445 break; 446 case WDC_COMPLETE: 447 wddone(wd); 448 break; 449 default: 450 panic("__wdstart: bad return code from wdc_ata_bio()"); 451 } 452 } 453 454 void 455 wddone(v) 456 void *v; 457 { 458 struct wd_softc *wd = v; 459 struct buf *bp = wd->sc_bp; 460 char buf[256], *errbuf = buf; 461 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 462 DEBUG_XFERS); 463 464 bp->b_resid = wd->sc_wdc_bio.bcount; 465 errbuf[0] = '\0'; 466 switch (wd->sc_wdc_bio.error) { 467 case ERR_DMA: 468 errbuf = "DMA error"; 469 goto retry; 470 case ERR_DF: 471 errbuf = "device fault"; 472 goto retry; 473 case TIMEOUT: 474 errbuf = "device timeout"; 475 goto retry; 476 case ERROR: 477 /* Don't care about media change bits */ 478 if (wd->sc_wdc_bio.r_error != 0 && 479 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 480 goto noerror; 481 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 482 retry: /* Just reset and retry. Can we do more ? */ 483 wdc_reset_channel(wd->drvp); 484 diskerr(bp, "wd", errbuf, LOG_PRINTF, 485 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 486 if (wd->retries++ < WDIORETRIES) { 487 printf(", retrying\n"); 488 timeout(wdrestart, wd, RECOVERYTIME); 489 return; 490 } 491 printf("\n"); 492 bp->b_flags |= B_ERROR; 493 bp->b_error = EIO; 494 break; 495 case NOERROR: 496 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 497 printf("%s: soft error (corrected)\n", 498 wd->sc_dev.dv_xname); 499 } 500 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 501 #if NRND > 0 502 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 503 #endif 504 biodone(bp); 505 wd->openings++; 506 wdstart(wd); 507 } 508 509 void 510 wdrestart(v) 511 void *v; 512 { 513 struct wd_softc *wd = v; 514 struct buf *bp = wd->sc_bp; 515 int s; 516 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 517 DEBUG_XFERS); 518 519 s = splbio(); 520 __wdstart(v, bp); 521 splx(s); 522 } 523 524 int 525 wdread(dev, uio, flags) 526 dev_t dev; 527 struct uio *uio; 528 int flags; 529 { 530 531 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 532 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 533 } 534 535 int 536 wdwrite(dev, uio, flags) 537 dev_t dev; 538 struct uio *uio; 539 int flags; 540 { 541 542 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 543 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 544 } 545 546 /* 547 * Wait interruptibly for an exclusive lock. 548 * 549 * XXX 550 * Several drivers do this; it should be abstracted and made MP-safe. 551 */ 552 int 553 wdlock(wd) 554 struct wd_softc *wd; 555 { 556 int error; 557 int s; 558 559 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 560 561 s = splbio(); 562 563 while ((wd->sc_flags & WDF_LOCKED) != 0) { 564 wd->sc_flags |= WDF_WANTED; 565 if ((error = tsleep(wd, PRIBIO | PCATCH, 566 "wdlck", 0)) != 0) { 567 splx(s); 568 return error; 569 } 570 } 571 wd->sc_flags |= WDF_LOCKED; 572 splx(s); 573 return 0; 574 } 575 576 /* 577 * Unlock and wake up any waiters. 578 */ 579 void 580 wdunlock(wd) 581 struct wd_softc *wd; 582 { 583 584 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 585 586 wd->sc_flags &= ~WDF_LOCKED; 587 if ((wd->sc_flags & WDF_WANTED) != 0) { 588 wd->sc_flags &= ~WDF_WANTED; 589 wakeup(wd); 590 } 591 } 592 593 int 594 wdopen(dev, flag, fmt, p) 595 dev_t dev; 596 int flag, fmt; 597 struct proc *p; 598 { 599 struct wd_softc *wd; 600 int unit, part; 601 int error; 602 603 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 604 unit = WDUNIT(dev); 605 if (unit >= wd_cd.cd_ndevs) 606 return ENXIO; 607 wd = wd_cd.cd_devs[unit]; 608 if (wd == NULL) 609 return ENXIO; 610 611 if ((error = wdlock(wd)) != 0) 612 return error; 613 614 if (wd->sc_dk.dk_openmask != 0) { 615 /* 616 * If any partition is open, but the disk has been invalidated, 617 * disallow further opens. 618 */ 619 if ((wd->sc_flags & WDF_LOADED) == 0) { 620 error = EIO; 621 goto bad3; 622 } 623 } else { 624 if ((wd->sc_flags & WDF_LOADED) == 0) { 625 wd->sc_flags |= WDF_LOADED; 626 627 /* Load the physical device parameters. */ 628 wd_get_params(wd, AT_WAIT, &wd->sc_params); 629 630 /* Load the partition info if not already loaded. */ 631 wdgetdisklabel(wd); 632 } 633 } 634 635 part = WDPART(dev); 636 637 /* Check that the partition exists. */ 638 if (part != RAW_PART && 639 (part >= wd->sc_dk.dk_label->d_npartitions || 640 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 641 error = ENXIO; 642 goto bad; 643 } 644 645 /* Insure only one open at a time. */ 646 switch (fmt) { 647 case S_IFCHR: 648 wd->sc_dk.dk_copenmask |= (1 << part); 649 break; 650 case S_IFBLK: 651 wd->sc_dk.dk_bopenmask |= (1 << part); 652 break; 653 } 654 wd->sc_dk.dk_openmask = 655 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 656 657 wdunlock(wd); 658 return 0; 659 660 bad: 661 if (wd->sc_dk.dk_openmask == 0) { 662 } 663 664 bad3: 665 wdunlock(wd); 666 return error; 667 } 668 669 int 670 wdclose(dev, flag, fmt, p) 671 dev_t dev; 672 int flag, fmt; 673 struct proc *p; 674 { 675 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 676 int part = WDPART(dev); 677 int error; 678 679 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 680 if ((error = wdlock(wd)) != 0) 681 return error; 682 683 switch (fmt) { 684 case S_IFCHR: 685 wd->sc_dk.dk_copenmask &= ~(1 << part); 686 break; 687 case S_IFBLK: 688 wd->sc_dk.dk_bopenmask &= ~(1 << part); 689 break; 690 } 691 wd->sc_dk.dk_openmask = 692 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 693 694 if (wd->sc_dk.dk_openmask == 0) { 695 /* XXXX Must wait for I/O to complete! */ 696 } 697 698 wdunlock(wd); 699 return 0; 700 } 701 702 void 703 wdgetdefaultlabel(wd, lp) 704 struct wd_softc *wd; 705 struct disklabel *lp; 706 { 707 708 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 709 memset(lp, 0, sizeof(struct disklabel)); 710 711 lp->d_secsize = DEV_BSIZE; 712 lp->d_ntracks = wd->sc_params.atap_heads; 713 lp->d_nsectors = wd->sc_params.atap_sectors; 714 lp->d_ncylinders = wd->sc_params.atap_cylinders; 715 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 716 717 #if 0 718 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 719 lp->d_type = DTYPE_ST506; 720 strncpy(lp->d_typename, "ST506 disk", 16); 721 } else { 722 lp->d_type = DTYPE_ESDI; 723 strncpy(lp->d_typename, "ESDI/IDE", 724 sizeof lp->d_typename); 725 } 726 #endif 727 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 728 strncpy(lp->d_packname, "fictitious", 16); 729 lp->d_secperunit = wd->sc_capacity; 730 lp->d_rpm = 3600; 731 lp->d_interleave = 1; 732 lp->d_flags = 0; 733 734 lp->d_partitions[RAW_PART].p_offset = 0; 735 lp->d_partitions[RAW_PART].p_size = 736 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 737 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 738 lp->d_npartitions = RAW_PART + 1; 739 740 lp->d_magic = DISKMAGIC; 741 lp->d_magic2 = DISKMAGIC; 742 lp->d_checksum = dkcksum(lp); 743 } 744 745 /* 746 * Fabricate a default disk label, and try to read the correct one. 747 */ 748 void 749 wdgetdisklabel(wd) 750 struct wd_softc *wd; 751 { 752 struct disklabel *lp = wd->sc_dk.dk_label; 753 char *errstring; 754 755 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 756 757 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 758 759 wdgetdefaultlabel(wd, lp); 760 761 wd->sc_badsect[0] = -1; 762 763 if (wd->drvp->state > RECAL) 764 wd->drvp->drive_flags |= DRIVE_RESET; 765 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 766 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 767 if (errstring) { 768 /* 769 * This probably happened because the drive's default 770 * geometry doesn't match the DOS geometry. We 771 * assume the DOS geometry is now in the label and try 772 * again. XXX This is a kluge. 773 */ 774 if (wd->drvp->state > RECAL) 775 wd->drvp->drive_flags |= DRIVE_RESET; 776 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 777 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 778 } 779 if (errstring) { 780 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 781 return; 782 } 783 784 if (wd->drvp->state > RECAL) 785 wd->drvp->drive_flags |= DRIVE_RESET; 786 #ifdef HAS_BAD144_HANDLING 787 if ((lp->d_flags & D_BADSECT) != 0) 788 bad144intern(wd); 789 #endif 790 } 791 792 int 793 wdioctl(dev, xfer, addr, flag, p) 794 dev_t dev; 795 u_long xfer; 796 caddr_t addr; 797 int flag; 798 struct proc *p; 799 { 800 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 801 int error; 802 803 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 804 805 if ((wd->sc_flags & WDF_LOADED) == 0) 806 return EIO; 807 808 switch (xfer) { 809 #ifdef HAS_BAD144_HANDLING 810 case DIOCSBAD: 811 if ((flag & FWRITE) == 0) 812 return EBADF; 813 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 814 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 815 bad144intern(wd); 816 return 0; 817 #endif 818 819 case DIOCGDINFO: 820 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 821 return 0; 822 823 case DIOCGPART: 824 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 825 ((struct partinfo *)addr)->part = 826 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 827 return 0; 828 829 case DIOCWDINFO: 830 case DIOCSDINFO: 831 if ((flag & FWRITE) == 0) 832 return EBADF; 833 834 if ((error = wdlock(wd)) != 0) 835 return error; 836 wd->sc_flags |= WDF_LABELLING; 837 838 error = setdisklabel(wd->sc_dk.dk_label, 839 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 840 wd->sc_dk.dk_cpulabel); 841 if (error == 0) { 842 if (wd->drvp->state > RECAL) 843 wd->drvp->drive_flags |= DRIVE_RESET; 844 if (xfer == DIOCWDINFO) 845 error = writedisklabel(WDLABELDEV(dev), 846 wdstrategy, wd->sc_dk.dk_label, 847 wd->sc_dk.dk_cpulabel); 848 } 849 850 wd->sc_flags &= ~WDF_LABELLING; 851 wdunlock(wd); 852 return error; 853 854 case DIOCWLABEL: 855 if ((flag & FWRITE) == 0) 856 return EBADF; 857 if (*(int *)addr) 858 wd->sc_flags |= WDF_WLABEL; 859 else 860 wd->sc_flags &= ~WDF_WLABEL; 861 return 0; 862 863 case DIOCGDEFLABEL: 864 wdgetdefaultlabel(wd, (struct disklabel *)addr); 865 return 0; 866 867 #ifdef notyet 868 case DIOCWFORMAT: 869 if ((flag & FWRITE) == 0) 870 return EBADF; 871 { 872 register struct format_op *fop; 873 struct iovec aiov; 874 struct uio auio; 875 876 fop = (struct format_op *)addr; 877 aiov.iov_base = fop->df_buf; 878 aiov.iov_len = fop->df_count; 879 auio.uio_iov = &aiov; 880 auio.uio_iovcnt = 1; 881 auio.uio_resid = fop->df_count; 882 auio.uio_segflg = 0; 883 auio.uio_offset = 884 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 885 auio.uio_procp = p; 886 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 887 &auio); 888 fop->df_count -= auio.uio_resid; 889 fop->df_reg[0] = wdc->sc_status; 890 fop->df_reg[1] = wdc->sc_error; 891 return error; 892 } 893 #endif 894 895 default: 896 return ENOTTY; 897 } 898 899 #ifdef DIAGNOSTIC 900 panic("wdioctl: impossible"); 901 #endif 902 } 903 904 #ifdef B_FORMAT 905 int 906 wdformat(struct buf *bp) 907 { 908 909 bp->b_flags |= B_FORMAT; 910 return wdstrategy(bp); 911 } 912 #endif 913 914 int 915 wdsize(dev) 916 dev_t dev; 917 { 918 struct wd_softc *wd; 919 int part, unit, omask; 920 int size; 921 922 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 923 924 unit = WDUNIT(dev); 925 if (unit >= wd_cd.cd_ndevs) 926 return (-1); 927 wd = wd_cd.cd_devs[unit]; 928 if (wd == NULL) 929 return (-1); 930 931 part = WDPART(dev); 932 omask = wd->sc_dk.dk_openmask & (1 << part); 933 934 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 935 return (-1); 936 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 937 size = -1; 938 else 939 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 940 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 941 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 942 return (-1); 943 return (size); 944 } 945 946 #ifndef __BDEVSW_DUMP_OLD_TYPE 947 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 948 static int wddoingadump = 0; 949 static int wddumprecalibrated = 0; 950 static int wddumpmulti = 1; 951 952 /* 953 * Dump core after a system crash. 954 */ 955 int 956 wddump(dev, blkno, va, size) 957 dev_t dev; 958 daddr_t blkno; 959 caddr_t va; 960 size_t size; 961 { 962 struct wd_softc *wd; /* disk unit to do the I/O */ 963 struct disklabel *lp; /* disk's disklabel */ 964 int unit, part; 965 int nblks; /* total number of sectors left to write */ 966 int err; 967 char errbuf[256]; 968 969 /* Check if recursive dump; if so, punt. */ 970 if (wddoingadump) 971 return EFAULT; 972 wddoingadump = 1; 973 974 unit = WDUNIT(dev); 975 if (unit >= wd_cd.cd_ndevs) 976 return ENXIO; 977 wd = wd_cd.cd_devs[unit]; 978 if (wd == (struct wd_softc *)0) 979 return ENXIO; 980 981 part = WDPART(dev); 982 983 /* Make sure it was initialized. */ 984 if (wd->drvp->state < READY) 985 return ENXIO; 986 987 /* Convert to disk sectors. Request must be a multiple of size. */ 988 lp = wd->sc_dk.dk_label; 989 if ((size % lp->d_secsize) != 0) 990 return EFAULT; 991 nblks = size / lp->d_secsize; 992 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 993 994 /* Check transfer bounds against partition size. */ 995 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 996 return EINVAL; 997 998 /* Offset block number to start of partition. */ 999 blkno += lp->d_partitions[part].p_offset; 1000 1001 /* Recalibrate, if first dump transfer. */ 1002 if (wddumprecalibrated == 0) { 1003 wddumpmulti = wd->sc_multi; 1004 wddumprecalibrated = 1; 1005 wd->drvp->state = RECAL; 1006 } 1007 1008 while (nblks > 0) { 1009 again: 1010 wd->sc_wdc_bio.blkno = blkno; 1011 wd->sc_wdc_bio.flags = ATA_POLL; 1012 if (wddumpmulti == 1) 1013 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1014 if (wd->sc_flags & WDF_LBA) 1015 wd->sc_wdc_bio.flags |= ATA_LBA; 1016 wd->sc_wdc_bio.bcount = 1017 min(nblks, wddumpmulti) * lp->d_secsize; 1018 wd->sc_wdc_bio.databuf = va; 1019 #ifndef WD_DUMP_NOT_TRUSTED 1020 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1021 case WDC_TRY_AGAIN: 1022 panic("wddump: try again"); 1023 break; 1024 case WDC_QUEUED: 1025 panic("wddump: polled command has been queued"); 1026 break; 1027 case WDC_COMPLETE: 1028 break; 1029 } 1030 switch(wd->sc_wdc_bio.error) { 1031 case TIMEOUT: 1032 printf("wddump: device timed out"); 1033 err = EIO; 1034 break; 1035 case ERR_DF: 1036 printf("wddump: drive fault"); 1037 err = EIO; 1038 break; 1039 case ERR_DMA: 1040 printf("wddump: DMA error"); 1041 err = EIO; 1042 break; 1043 case ERROR: 1044 errbuf[0] = '\0'; 1045 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 1046 printf("wddump: %s", errbuf); 1047 err = EIO; 1048 break; 1049 case NOERROR: 1050 err = 0; 1051 break; 1052 default: 1053 panic("wddump: unknown error type"); 1054 } 1055 if (err != 0) { 1056 if (wddumpmulti != 1) { 1057 wddumpmulti = 1; /* retry in single-sector */ 1058 printf(", retrying\n"); 1059 goto again; 1060 } 1061 printf("\n"); 1062 return err; 1063 } 1064 #else /* WD_DUMP_NOT_TRUSTED */ 1065 /* Let's just talk about this first... */ 1066 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1067 unit, va, cylin, head, sector); 1068 delay(500 * 1000); /* half a second */ 1069 #endif 1070 1071 /* update block count */ 1072 nblks -= min(nblks, wddumpmulti); 1073 blkno += min(nblks, wddumpmulti); 1074 va += min(nblks, wddumpmulti) * lp->d_secsize; 1075 } 1076 1077 wddoingadump = 0; 1078 return 0; 1079 } 1080 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1081 1082 1083 int 1084 wddump(dev, blkno, va, size) 1085 dev_t dev; 1086 daddr_t blkno; 1087 caddr_t va; 1088 size_t size; 1089 { 1090 1091 /* Not implemented. */ 1092 return ENXIO; 1093 } 1094 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1095 1096 #ifdef HAS_BAD144_HANDLING 1097 /* 1098 * Internalize the bad sector table. 1099 */ 1100 void 1101 bad144intern(wd) 1102 struct wd_softc *wd; 1103 { 1104 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1105 struct disklabel *lp = wd->sc_dk.dk_label; 1106 int i = 0; 1107 1108 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1109 1110 for (; i < NBT_BAD; i++) { 1111 if (bt->bt_bad[i].bt_cyl == 0xffff) 1112 break; 1113 wd->sc_badsect[i] = 1114 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1115 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1116 (bt->bt_bad[i].bt_trksec & 0xff); 1117 } 1118 for (; i < NBT_BAD+1; i++) 1119 wd->sc_badsect[i] = -1; 1120 } 1121 #endif 1122 1123 void 1124 print_wderror(errno, buf) 1125 int errno; 1126 char *buf; 1127 { 1128 static char *errstr[] = {"address mark not found", "track 0 not found", 1129 "aborted command", "media change requested", "id not found", 1130 "media changed", "uncorrectable data error", "bad block detected"}; 1131 int i; 1132 char *sep = ""; 1133 1134 if (errno == 0) { 1135 sprintf(buf, "error not notified"); 1136 } 1137 1138 for (i = 0; i < 8; i++) { 1139 if (errno & (1 << i)) { 1140 buf += sprintf(buf, "%s %s", sep, errstr[i]); 1141 sep = ","; 1142 } 1143 } 1144 } 1145 1146 int 1147 wd_get_params(wd, flags, params) 1148 struct wd_softc *wd; 1149 u_int8_t flags; 1150 struct ataparams *params; 1151 { 1152 switch (ata_get_params(wd->drvp, flags, params)) { 1153 case CMD_AGAIN: 1154 return 1; 1155 case CMD_ERR: 1156 /* 1157 * We `know' there's a drive here; just assume it's old. 1158 * This geometry is only used to read the MBR and print a 1159 * (false) attach message. 1160 */ 1161 strncpy(params->atap_model, "ST506", 1162 sizeof params->atap_model); 1163 params->atap_config = ATA_CFG_FIXED; 1164 params->atap_cylinders = 1024; 1165 params->atap_heads = 8; 1166 params->atap_sectors = 17; 1167 params->atap_multi = 1; 1168 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1169 return 0; 1170 case CMD_OK: 1171 return 0; 1172 default: 1173 panic("wd_get_params: bad return code from ata_get_params"); 1174 /* NOTREACHED */ 1175 } 1176 } 1177
Indexes created Sat Sep 27 22:09:54 GMT 2025