wd.c revision 1.173
1 /* $NetBSD: wd.c,v 1.173 1998/04/26 06:03:23 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1998 Charles M. Hannum. All rights reserved. 5 * 6 * DMA and multi-sector PIO handling are derived from code contributed by 7 * Onno van der Linden. 8 * 9 * Bus_space-ified by Christopher G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Charles M. Hannum. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include "rnd.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/conf.h> 43 #include <sys/file.h> 44 #include <sys/stat.h> 45 #include <sys/ioctl.h> 46 #include <sys/buf.h> 47 #include <sys/uio.h> 48 #include <sys/malloc.h> 49 #include <sys/device.h> 50 #include <sys/disklabel.h> 51 #include <sys/disk.h> 52 #include <sys/syslog.h> 53 #include <sys/proc.h> 54 #if NRND > 0 55 #include <sys/rnd.h> 56 #endif 57 58 #include <vm/vm.h> 59 60 #include <machine/intr.h> 61 #include <machine/bus.h> 62 63 #include <dev/ic/wdcreg.h> /* XXX */ 64 #include <dev/ic/wdcvar.h> /* XXX */ 65 #include <dev/ata/wdlink.h> 66 #include "locators.h" 67 68 #define WAITTIME (4 * hz) /* time to wait for a completion */ 69 70 #define WDIORETRIES 5 /* number of retries before giving up */ 71 72 #define WDUNIT(dev) DISKUNIT(dev) 73 #define WDPART(dev) DISKPART(dev) 74 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 75 76 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 77 78 #ifdef WDDEBUG 79 #define WDDEBUG_PRINT(args) printf args 80 #else 81 #define WDDEBUG_PRINT(args) 82 #endif 83 84 struct wd_softc { 85 struct device sc_dev; 86 struct disk sc_dk; 87 struct wd_link *d_link; 88 struct buf sc_q; 89 #if NRND > 0 90 rndsource_element_t rnd_source; 91 #endif 92 }; 93 94 #ifdef __BROKEN_INDIRECT_CONFIG 95 int wdprobe __P((struct device *, void *, void *)); 96 #else 97 int wdprobe __P((struct device *, struct cfdata *, void *)); 98 #endif 99 void wdattach __P((struct device *, struct device *, void *)); 100 int wdprint __P((void *, char *)); 101 102 struct cfattach wd_ca = { 103 sizeof(struct wd_softc), wdprobe, wdattach 104 }; 105 106 extern struct cfdriver wd_cd; 107 108 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 109 void wdgetdisklabel __P((struct wd_softc *)); 110 int wd_get_parms __P((struct wd_softc *)); 111 void wdstrategy __P((struct buf *)); 112 void wdstart __P((void *)); 113 114 struct dkdriver wddkdriver = { wdstrategy }; 115 116 /* XXX: these should go elsewhere */ 117 cdev_decl(wd); 118 bdev_decl(wd); 119 120 void wdfinish __P((struct wd_softc *, struct buf *)); 121 int wdsetctlr __P((struct wd_link *)); 122 #ifdef HAS_BAD144_HANDLING 123 static void bad144intern __P((struct wd_softc *)); 124 #endif 125 int wdlock __P((struct wd_link *)); 126 void wdunlock __P((struct wd_link *)); 127 128 int 129 #ifdef __BROKEN_INDIRECT_CONFIG 130 wdprobe(parent, matchv, aux) 131 #else 132 wdprobe(parent, match, aux) 133 #endif 134 struct device *parent; 135 #ifdef __BROKEN_INDIRECT_CONFIG 136 void *matchv; 137 #else 138 struct cfdata *match; 139 #endif 140 141 void *aux; 142 { 143 #ifdef __BROKEN_INDIRECT_CONFIG 144 struct cfdata *match = matchv; 145 #endif 146 struct wd_link *d_link = aux; 147 int drive; 148 149 if (d_link == NULL) 150 return 0; 151 if (d_link->type != ATA) 152 return 0; 153 154 drive = d_link->drive; 155 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 156 match->cf_loc[ATACF_DRIVE] != drive) 157 return 0; 158 159 return 1; 160 } 161 162 void 163 wdattach(parent, self, aux) 164 struct device *parent, *self; 165 void *aux; 166 { 167 struct wd_softc *wd = (void *)self; 168 struct wd_link *d_link= aux; 169 int i, blank; 170 char buf[41], c, *p, *q; 171 172 wd->d_link = d_link; 173 d_link->openings = 1; 174 d_link->wd_softc = (caddr_t)wd; 175 176 /* 177 * Initialize and attach the disk structure. 178 */ 179 wd->sc_dk.dk_driver = &wddkdriver; 180 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 181 disk_attach(&wd->sc_dk); 182 183 d_link->sc_lp = wd->sc_dk.dk_label; 184 185 wdc_get_parms((struct wdc_softc *)d_link->wdc_softc, d_link); 186 for (blank = 0, p = d_link->sc_params.wdp_model, q = buf, i = 0; 187 i < sizeof(d_link->sc_params.wdp_model); i++) { 188 c = *p++; 189 if (c == '\0') 190 break; 191 if (c != ' ') { 192 if (blank) { 193 *q++ = ' '; 194 blank = 0; 195 } 196 *q++ = c; 197 } else 198 blank = 1; 199 } 200 *q++ = '\0'; 201 202 printf(": <%s>\n", buf); 203 204 if ((d_link->sc_params.wdp_capabilities1 & WD_CAP_DMA) != 0 && 205 d_link->sc_mode == WDM_DMA) { 206 d_link->sc_mode = WDM_DMA; 207 } else if ((d_link->sc_params.wdp_multi & 0xff) > 1) { 208 d_link->sc_mode = WDM_PIOMULTI; 209 d_link->sc_multiple = 210 min(d_link->sc_params.wdp_multi & 0xff, 16); 211 } else { 212 d_link->sc_mode = WDM_PIOSINGLE; 213 d_link->sc_multiple = 1; 214 } 215 216 printf("%s: using", wd->sc_dev.dv_xname); 217 if (d_link->sc_mode == WDM_DMA) 218 printf(" dma transfers,"); 219 else 220 printf(" %d-sector %d-bit pio transfers,", 221 d_link->sc_multiple, 222 (((struct wdc_softc *)d_link->wdc_softc)->sc_cap & 223 WDC_CAPABILITY_DATA32) == 0 ? 16 : 32); 224 225 /* Prior to ATA-4, LBA was optional. */ 226 if ((d_link->sc_params.wdp_capabilities1 & WD_CAP_LBA) != 0) 227 d_link->sc_flags |= WDF_LBA; 228 /* ATA-4 requires LBA. */ 229 if (d_link->sc_params.wdp_ataversion != 0xffff && 230 d_link->sc_params.wdp_ataversion >= WD_VER_ATA4) 231 d_link->sc_flags |= WDF_LBA; 232 233 if ((d_link->sc_flags & WDF_LBA) != 0) { 234 printf(" lba mode\n"); 235 d_link->sc_capacity = 236 (d_link->sc_params.wdp_capacity[1] << 16) | 237 d_link->sc_params.wdp_capacity[0]; 238 printf("%s: %dMB, %d sec, %d bytes/sec\n", 239 self->dv_xname, 240 d_link->sc_capacity / (1048576 / DEV_BSIZE), 241 d_link->sc_capacity, DEV_BSIZE); 242 } else { 243 printf(" chs mode\n"); 244 d_link->sc_capacity = 245 d_link->sc_params.wdp_cylinders * 246 d_link->sc_params.wdp_heads * 247 d_link->sc_params.wdp_sectors; 248 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 249 self->dv_xname, 250 d_link->sc_capacity / (1048576 / DEV_BSIZE), 251 d_link->sc_params.wdp_cylinders, 252 d_link->sc_params.wdp_heads, 253 d_link->sc_params.wdp_sectors, DEV_BSIZE); 254 } 255 256 #if NRND > 0 257 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 258 #endif 259 } 260 261 /* 262 * Read/write routine for a buffer. Validates the arguments and schedules the 263 * transfer. Does not wait for the transfer to complete. 264 */ 265 void 266 wdstrategy(bp) 267 struct buf *bp; 268 { 269 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 270 struct wd_link *d_link= wd->d_link; 271 int s; 272 273 /* Valid request? */ 274 if (bp->b_blkno < 0 || 275 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 276 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 277 bp->b_error = EINVAL; 278 goto bad; 279 } 280 281 /* If device invalidated (e.g. media change, door open), error. */ 282 if ((d_link->sc_flags & WDF_LOADED) == 0) { 283 bp->b_error = EIO; 284 goto bad; 285 } 286 287 /* If it's a null transfer, return immediately. */ 288 if (bp->b_bcount == 0) 289 goto done; 290 291 /* 292 * Do bounds checking, adjust transfer. if error, process. 293 * If end of partition, just return. 294 */ 295 if (WDPART(bp->b_dev) != RAW_PART && 296 bounds_check_with_label(bp, wd->sc_dk.dk_label, 297 (d_link->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 298 goto done; 299 300 /* Queue transfer on drive, activate drive and controller if idle. */ 301 s = splbio(); 302 disksort(&wd->sc_q, bp); 303 wdstart(wd); 304 splx(s); 305 return; 306 307 bad: 308 bp->b_flags |= B_ERROR; 309 done: 310 /* Toss transfer; we're done early. */ 311 bp->b_resid = bp->b_bcount; 312 biodone(bp); 313 } 314 315 /* 316 * Queue a drive for I/O. 317 */ 318 void 319 wdstart(arg) 320 void *arg; 321 { 322 struct wd_softc *wd = arg; 323 struct buf *dp, *bp=0; 324 struct wd_link *d_link = wd->d_link; 325 struct wdc_xfer *xfer; 326 daddr_t blkno, p_offset; 327 328 while (d_link->openings > 0) { 329 330 /* Is there a buf for us ? */ 331 dp = &wd->sc_q; 332 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 333 return; 334 dp->b_actf = bp->b_actf; 335 336 /* 337 * Make the command. First lock the device 338 */ 339 d_link->openings--; 340 if (WDPART(bp->b_dev) != RAW_PART) 341 p_offset = 342 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 343 else 344 p_offset = 0; 345 blkno = bp->b_blkno + p_offset; 346 blkno /= (wd->d_link->sc_lp->d_secsize / DEV_BSIZE); 347 348 xfer = wdc_get_xfer(0); 349 if (xfer == NULL) 350 panic("wdc_xfer"); 351 352 xfer->d_link = d_link; 353 xfer->c_bp = bp; 354 xfer->databuf = bp->b_data; 355 xfer->c_bcount = bp->b_bcount; 356 xfer->c_flags |= bp->b_flags & (B_READ|B_WRITE); 357 xfer->c_blkno = blkno; 358 359 /* Instrumentation. */ 360 disk_busy(&wd->sc_dk); 361 wdc_exec_xfer((struct wdc_softc *)wd->d_link->wdc_softc, 362 wd->d_link, xfer); 363 } 364 } 365 366 int 367 wdread(dev, uio, flags) 368 dev_t dev; 369 struct uio *uio; 370 int flags; 371 { 372 373 WDDEBUG_PRINT(("wdread\n")); 374 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 375 } 376 377 int 378 wdwrite(dev, uio, flags) 379 dev_t dev; 380 struct uio *uio; 381 int flags; 382 { 383 384 WDDEBUG_PRINT(("wdwrite\n")); 385 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 386 } 387 388 /* 389 * Wait interruptibly for an exclusive lock. 390 * 391 * XXX 392 * Several drivers do this; it should be abstracted and made MP-safe. 393 */ 394 int 395 wdlock(d_link) 396 struct wd_link *d_link; 397 { 398 int error; 399 int s; 400 401 WDDEBUG_PRINT(("wdlock\n")); 402 403 s = splbio(); 404 405 while ((d_link->sc_flags & WDF_LOCKED) != 0) { 406 d_link->sc_flags |= WDF_WANTED; 407 if ((error = tsleep(d_link, PRIBIO | PCATCH, 408 "wdlck", 0)) != 0) { 409 splx(s); 410 return error; 411 } 412 } 413 d_link->sc_flags |= WDF_LOCKED; 414 splx(s); 415 return 0; 416 } 417 418 /* 419 * Unlock and wake up any waiters. 420 */ 421 void 422 wdunlock(d_link) 423 struct wd_link *d_link; 424 { 425 426 WDDEBUG_PRINT(("wdunlock")); 427 428 d_link->sc_flags &= ~WDF_LOCKED; 429 if ((d_link->sc_flags & WDF_WANTED) != 0) { 430 d_link->sc_flags &= ~WDF_WANTED; 431 wakeup(d_link); 432 } 433 } 434 435 int 436 wdopen(dev, flag, fmt, p) 437 dev_t dev; 438 int flag, fmt; 439 struct proc *p; 440 { 441 struct wd_softc *wd; 442 struct wd_link *d_link; 443 int unit, part; 444 int error; 445 446 WDDEBUG_PRINT(("wdopen\n")); 447 448 unit = WDUNIT(dev); 449 if (unit >= wd_cd.cd_ndevs) 450 return ENXIO; 451 wd = wd_cd.cd_devs[unit]; 452 if (wd == NULL) 453 return ENXIO; 454 455 d_link = wd->d_link; 456 if ((error = wdlock(d_link)) != 0) 457 return error; 458 459 if (wd->sc_dk.dk_openmask != 0) { 460 /* 461 * If any partition is open, but the disk has been invalidated, 462 * disallow further opens. 463 */ 464 if ((d_link->sc_flags & WDF_LOADED) == 0) { 465 error = EIO; 466 goto bad3; 467 } 468 } else { 469 if ((d_link->sc_flags & WDF_LOADED) == 0) { 470 d_link->sc_flags |= WDF_LOADED; 471 472 /* Load the physical device parameters. */ 473 if (wdc_get_parms((struct wdc_softc *)d_link->wdc_softc, 474 d_link) != 0) { 475 error = ENXIO; 476 goto bad2; 477 } 478 479 /* Load the partition info if not already loaded. */ 480 wdgetdisklabel(wd); 481 } 482 } 483 484 part = WDPART(dev); 485 486 /* Check that the partition exists. */ 487 if (part != RAW_PART && 488 (part >= wd->sc_dk.dk_label->d_npartitions || 489 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 490 error = ENXIO; 491 goto bad; 492 } 493 494 /* Insure only one open at a time. */ 495 switch (fmt) { 496 case S_IFCHR: 497 wd->sc_dk.dk_copenmask |= (1 << part); 498 break; 499 case S_IFBLK: 500 wd->sc_dk.dk_bopenmask |= (1 << part); 501 break; 502 } 503 wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 504 505 wdunlock(d_link); 506 return 0; 507 508 bad2: 509 d_link->sc_flags &= ~WDF_LOADED; 510 511 bad: 512 if (wd->sc_dk.dk_openmask == 0) { 513 } 514 515 bad3: 516 wdunlock(d_link); 517 return error; 518 } 519 520 int 521 wdclose(dev, flag, fmt, p) 522 dev_t dev; 523 int flag, fmt; 524 struct proc *p; 525 { 526 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 527 int part = WDPART(dev); 528 int error; 529 530 if ((error = wdlock(wd->d_link)) != 0) 531 return error; 532 533 switch (fmt) { 534 case S_IFCHR: 535 wd->sc_dk.dk_copenmask &= ~(1 << part); 536 break; 537 case S_IFBLK: 538 wd->sc_dk.dk_bopenmask &= ~(1 << part); 539 break; 540 } 541 wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 542 543 if (wd->sc_dk.dk_openmask == 0) { 544 /* XXXX Must wait for I/O to complete! */ 545 } 546 547 wdunlock(wd->d_link); 548 return 0; 549 } 550 551 void 552 wdgetdefaultlabel(wd, lp) 553 struct wd_softc *wd; 554 struct disklabel *lp; 555 { 556 struct wd_link *d_link = wd->d_link; 557 558 bzero(lp, sizeof(struct disklabel)); 559 560 lp->d_secsize = DEV_BSIZE; 561 lp->d_ntracks = d_link->sc_params.wdp_heads; 562 lp->d_nsectors = d_link->sc_params.wdp_sectors; 563 lp->d_ncylinders = d_link->sc_params.wdp_cylinders; 564 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 565 566 #if 0 567 strncpy(lp->d_typename, "ST506 disk", 16); 568 lp->d_type = DTYPE_ST506; 569 #endif 570 strncpy(lp->d_packname, d_link->sc_params.wdp_model, 16); 571 lp->d_secperunit = d_link->sc_capacity; 572 lp->d_rpm = 3600; 573 lp->d_interleave = 1; 574 lp->d_flags = 0; 575 576 lp->d_partitions[RAW_PART].p_offset = 0; 577 lp->d_partitions[RAW_PART].p_size = 578 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 579 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 580 lp->d_npartitions = RAW_PART + 1; 581 582 lp->d_magic = DISKMAGIC; 583 lp->d_magic2 = DISKMAGIC; 584 lp->d_checksum = dkcksum(lp); 585 } 586 587 /* 588 * Fabricate a default disk label, and try to read the correct one. 589 */ 590 void 591 wdgetdisklabel(wd) 592 struct wd_softc *wd; 593 { 594 struct disklabel *lp = wd->sc_dk.dk_label; 595 struct wd_link *d_link = wd->d_link; 596 char *errstring; 597 598 WDDEBUG_PRINT(("wdgetdisklabel\n")); 599 600 bzero(wd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); 601 602 wdgetdefaultlabel(wd, lp); 603 604 d_link->sc_badsect[0] = -1; 605 606 if (d_link->sc_state > RECAL) 607 d_link->sc_state = RECAL; 608 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 609 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 610 if (errstring) { 611 /* 612 * This probably happened because the drive's default 613 * geometry doesn't match the DOS geometry. We 614 * assume the DOS geometry is now in the label and try 615 * again. XXX This is a kluge. 616 */ 617 if (d_link->sc_state > GEOMETRY) 618 d_link->sc_state = GEOMETRY; 619 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 620 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 621 } 622 if (errstring) { 623 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 624 return; 625 } 626 627 if (d_link->sc_state > GEOMETRY) 628 d_link->sc_state = GEOMETRY; 629 #ifdef HAS_BAD144_HANDLING 630 if ((lp->d_flags & D_BADSECT) != 0) 631 bad144intern(wd); 632 #endif 633 } 634 635 636 /* 637 * Tell the drive what geometry to use. 638 */ 639 int 640 wdsetctlr(d_link) 641 struct wd_link *d_link; 642 { 643 struct wd_softc *wd=(struct wd_softc *)d_link->wd_softc; 644 645 WDDEBUG_PRINT(("wd(%d,%d) C%dH%dS%d\n", wd->sc_dev.dv_unit, 646 d_link->drive, wd->sc_dk.dk_label->d_ncylinders, 647 wd->sc_dk.dk_label->d_ntracks, wd->sc_dk.dk_label->d_nsectors)); 648 649 if (wdccommand((struct wdc_softc *)d_link->wdc_softc, 650 d_link, WDCC_IDP, d_link->drive, 651 wd->sc_dk.dk_label->d_ncylinders, 652 wd->sc_dk.dk_label->d_ntracks - 1, 0, 653 wd->sc_dk.dk_label->d_nsectors) != 0) { 654 wderror(d_link, NULL, "wdsetctlr: geometry upload failed"); 655 return -1; 656 } 657 658 return 0; 659 } 660 661 int 662 wdioctl(dev, xfer, addr, flag, p) 663 dev_t dev; 664 u_long xfer; 665 caddr_t addr; 666 int flag; 667 struct proc *p; 668 { 669 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 670 struct wd_link *d_link = wd->d_link; 671 int error; 672 673 WDDEBUG_PRINT(("wdioctl\n")); 674 675 if ((d_link->sc_flags & WDF_LOADED) == 0) 676 return EIO; 677 678 switch (xfer) { 679 #ifdef HAS_BAD144_HANDLING 680 case DIOCSBAD: 681 if ((flag & FWRITE) == 0) 682 return EBADF; 683 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 684 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 685 bad144intern(wd); 686 return 0; 687 #endif 688 689 case DIOCGDINFO: 690 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 691 return 0; 692 693 case DIOCGPART: 694 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 695 ((struct partinfo *)addr)->part = 696 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 697 return 0; 698 699 case DIOCWDINFO: 700 case DIOCSDINFO: 701 if ((flag & FWRITE) == 0) 702 return EBADF; 703 704 if ((error = wdlock(wd->d_link)) != 0) 705 return error; 706 d_link->sc_flags |= WDF_LABELLING; 707 708 error = setdisklabel(wd->sc_dk.dk_label, 709 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 710 wd->sc_dk.dk_cpulabel); 711 if (error == 0) { 712 if (d_link->sc_state > GEOMETRY) 713 d_link->sc_state = GEOMETRY; 714 if (xfer == DIOCWDINFO) 715 error = writedisklabel(WDLABELDEV(dev), 716 wdstrategy, wd->sc_dk.dk_label, 717 wd->sc_dk.dk_cpulabel); 718 } 719 720 d_link->sc_flags &= ~WDF_LABELLING; 721 wdunlock(d_link); 722 return error; 723 724 case DIOCWLABEL: 725 if ((flag & FWRITE) == 0) 726 return EBADF; 727 if (*(int *)addr) 728 d_link->sc_flags |= WDF_WLABEL; 729 else 730 d_link->sc_flags &= ~WDF_WLABEL; 731 return 0; 732 733 case DIOCGDEFLABEL: 734 wdgetdefaultlabel(wd, (struct disklabel *)addr); 735 return 0; 736 737 #ifdef notyet 738 case DIOCWFORMAT: 739 if ((flag & FWRITE) == 0) 740 return EBADF; 741 { 742 register struct format_op *fop; 743 struct iovec aiov; 744 struct uio auio; 745 746 fop = (struct format_op *)addr; 747 aiov.iov_base = fop->df_buf; 748 aiov.iov_len = fop->df_count; 749 auio.uio_iov = &aiov; 750 auio.uio_iovcnt = 1; 751 auio.uio_resid = fop->df_count; 752 auio.uio_segflg = 0; 753 auio.uio_offset = 754 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 755 auio.uio_procp = p; 756 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 757 &auio); 758 fop->df_count -= auio.uio_resid; 759 fop->df_reg[0] = wdc->sc_status; 760 fop->df_reg[1] = wdc->sc_error; 761 return error; 762 } 763 #endif 764 765 default: 766 return ENOTTY; 767 } 768 769 #ifdef DIAGNOSTIC 770 panic("wdioctl: impossible"); 771 #endif 772 } 773 774 #ifdef B_FORMAT 775 int 776 wdformat(struct buf *bp) 777 { 778 779 bp->b_flags |= B_FORMAT; 780 return wdstrategy(bp); 781 } 782 #endif 783 784 int 785 wdsize(dev) 786 dev_t dev; 787 { 788 struct wd_softc *wd; 789 int part, unit, omask; 790 int size; 791 792 WDDEBUG_PRINT(("wdsize\n")); 793 794 unit = WDUNIT(dev); 795 if (unit >= wd_cd.cd_ndevs) 796 return (-1); 797 wd = wd_cd.cd_devs[unit]; 798 if (wd == NULL) 799 return (-1); 800 801 part = WDPART(dev); 802 omask = wd->sc_dk.dk_openmask & (1 << part); 803 804 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 805 return (-1); 806 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 807 size = -1; 808 else 809 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 810 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 811 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 812 return (-1); 813 return (size); 814 } 815 816 817 #ifndef __BDEVSW_DUMP_OLD_TYPE 818 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 819 static int wddoingadump; 820 static int wddumprecalibrated; 821 822 /* 823 * Dump core after a system crash. 824 * 825 * XXX: This needs work! Currently, it's a major hack: the 826 * use of wdc_softc is very bad and should go away. 827 */ 828 int 829 wddump(dev, blkno, va, size) 830 dev_t dev; 831 daddr_t blkno; 832 caddr_t va; 833 size_t size; 834 { 835 struct wd_softc *wd; /* disk unit to do the I/O */ 836 struct wdc_softc *wdc; /* disk controller to do the I/O */ 837 struct disklabel *lp; /* disk's disklabel */ 838 struct wd_link *d_link; 839 int unit, part; 840 int nblks; /* total number of sectors left to write */ 841 842 /* Check if recursive dump; if so, punt. */ 843 if (wddoingadump) 844 return EFAULT; 845 wddoingadump = 1; 846 847 unit = WDUNIT(dev); 848 if (unit >= wd_cd.cd_ndevs) 849 return ENXIO; 850 wd = wd_cd.cd_devs[unit]; 851 if (wd == (struct wd_softc *)0) 852 return ENXIO; 853 d_link = wd->d_link; 854 855 part = WDPART(dev); 856 857 /* Make sure it was initialized. */ 858 if (d_link->sc_state < READY) 859 return ENXIO; 860 861 wdc = (void *)wd->sc_dev.dv_parent; 862 863 /* Convert to disk sectors. Request must be a multiple of size. */ 864 lp = wd->sc_dk.dk_label; 865 if ((size % lp->d_secsize) != 0) 866 return EFAULT; 867 nblks = size / lp->d_secsize; 868 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 869 870 /* Check transfer bounds against partition size. */ 871 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 872 return EINVAL; 873 874 /* Offset block number to start of partition. */ 875 blkno += lp->d_partitions[part].p_offset; 876 877 /* Recalibrate, if first dump transfer. */ 878 if (wddumprecalibrated == 0) { 879 wddumprecalibrated = 1; 880 if (wdccommandshort(wdc, d_link->drive, WDCC_RECAL) != 0 || 881 wait_for_ready(wdc) != 0 || wdsetctlr(d_link) != 0 || 882 wait_for_ready(wdc) != 0) { 883 wderror(d_link, NULL, "wddump: recal failed"); 884 return EIO; 885 } 886 } 887 888 while (nblks > 0) { 889 daddr_t xlt_blkno = blkno; 890 long cylin, head, sector; 891 892 if ((lp->d_flags & D_BADSECT) != 0) { 893 long blkdiff; 894 int i; 895 896 for (i = 0; (blkdiff = d_link->sc_badsect[i]) != -1; i++) { 897 blkdiff -= xlt_blkno; 898 if (blkdiff < 0) 899 continue; 900 if (blkdiff == 0) { 901 /* Replace current block of transfer. */ 902 xlt_blkno = lp->d_secperunit - 903 lp->d_nsectors - i - 1; 904 } 905 break; 906 } 907 /* Tranfer is okay now. */ 908 } 909 910 if ((d_link->sc_flags & WDF_LBA) != 0) { 911 sector = (xlt_blkno >> 0) & 0xff; 912 cylin = (xlt_blkno >> 8) & 0xffff; 913 head = (xlt_blkno >> 24) & 0xf; 914 head |= WDSD_LBA; 915 } else { 916 sector = xlt_blkno % lp->d_nsectors; 917 sector++; /* Sectors begin with 1, not 0. */ 918 xlt_blkno /= lp->d_nsectors; 919 head = xlt_blkno % lp->d_ntracks; 920 xlt_blkno /= lp->d_ntracks; 921 cylin = xlt_blkno; 922 head |= WDSD_CHS; 923 } 924 925 #ifndef WD_DUMP_NOT_TRUSTED 926 if (wdccommand((struct wdc_softc *)d_link->wdc_softc, d_link, 927 WDCC_WRITE, d_link->drive, cylin, head, sector, 1) != 0 || 928 wait_for_drq(wdc) != 0) { 929 wderror(d_link, NULL, "wddump: write failed"); 930 return EIO; 931 } 932 933 /* XXX XXX XXX */ 934 bus_space_write_multi_2(wdc->sc_iot, wdc->sc_ioh, wd_data, 935 (u_int16_t *)va, lp->d_secsize >> 1); 936 937 /* Check data request (should be done). */ 938 if (wait_for_ready(wdc) != 0) { 939 wderror(d_link, NULL, 940 "wddump: timeout waiting for ready"); 941 return EIO; 942 } 943 #else /* WD_DUMP_NOT_TRUSTED */ 944 /* Let's just talk about this first... */ 945 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 946 unit, va, cylin, head, sector); 947 delay(500 * 1000); /* half a second */ 948 #endif 949 950 /* update block count */ 951 nblks -= 1; 952 blkno += 1; 953 va += lp->d_secsize; 954 } 955 956 wddoingadump = 0; 957 return 0; 958 } 959 #else /* __BDEVSW_DUMP_NEW_TYPE */ 960 961 962 int 963 wddump(dev, blkno, va, size) 964 dev_t dev; 965 daddr_t blkno; 966 caddr_t va; 967 size_t size; 968 { 969 970 /* Not implemented. */ 971 return ENXIO; 972 } 973 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 974 975 #ifdef HAS_BAD144_HANDLING 976 /* 977 * Internalize the bad sector table. 978 */ 979 void 980 bad144intern(wd) 981 struct wd_softc *wd; 982 { 983 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 984 struct disklabel *lp = wd->sc_dk.dk_label; 985 struct wd_link *d_link = wd->d_link; 986 int i = 0; 987 988 WDDEBUG_PRINT(("bad144intern\n")); 989 990 for (; i < NBT_BAD; i++) { 991 if (bt->bt_bad[i].bt_cyl == 0xffff) 992 break; 993 d_link->sc_badsect[i] = 994 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 995 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 996 (bt->bt_bad[i].bt_trksec & 0xff); 997 } 998 for (; i < NBT_BAD+1; i++) 999 d_link->sc_badsect[i] = -1; 1000 } 1001 #endif 1002 1003 void 1004 wderror(d_link, bp, msg) 1005 struct wd_link *d_link; 1006 struct buf *bp; 1007 char *msg; 1008 { 1009 struct wd_softc *wd = (struct wd_softc *)d_link->wd_softc; 1010 1011 if (bp) { 1012 diskerr(bp, "wd", msg, LOG_PRINTF, bp->b_bcount, 1013 wd->sc_dk.dk_label); 1014 printf("\n"); 1015 } else 1016 printf("%s: %s\n", wd->sc_dev.dv_xname, msg); 1017 } 1018 1019 void 1020 wddone(d_link, bp) 1021 struct wd_link *d_link; 1022 struct buf *bp; 1023 { 1024 struct wd_softc *wd = (void *)d_link->wd_softc; 1025 1026 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 1027 #if NRND > 0 1028 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 1029 #endif 1030 } 1031
Indexes created Sat Sep 27 14:09:57 GMT 2025