ed_mca.c revision 1.64
1 /* $NetBSD: ed_mca.c,v 1.64 2015/04/26 15:15:20 mlelstv Exp $ */ 2 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Disk drive goo for MCA ESDI controller driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ed_mca.c,v 1.64 2015/04/26 15:15:20 mlelstv Exp $"); 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/bufq.h> 48 #include <sys/uio.h> 49 #include <sys/malloc.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/disk.h> 53 #include <sys/syslog.h> 54 #include <sys/proc.h> 55 #include <sys/vnode.h> 56 #include <sys/rndsource.h> 57 58 #include <sys/intr.h> 59 #include <sys/bus.h> 60 61 #include <dev/mca/mcavar.h> 62 63 #include <dev/mca/edcreg.h> 64 #include <dev/mca/edvar.h> 65 #include <dev/mca/edcvar.h> 66 67 /* #define ATADEBUG */ 68 69 #ifdef ATADEBUG 70 #define ATADEBUG_PRINT(args, level) printf args 71 #else 72 #define ATADEBUG_PRINT(args, level) 73 #endif 74 75 #define EDLABELDEV(dev) (MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART)) 76 77 static int ed_mca_probe (device_t, cfdata_t, void *); 78 static void ed_mca_attach (device_t, device_t, void *); 79 80 CFATTACH_DECL_NEW(ed_mca, sizeof(struct ed_softc), 81 ed_mca_probe, ed_mca_attach, NULL, NULL); 82 83 extern struct cfdriver ed_cd; 84 85 static int ed_get_params(struct ed_softc *, int *); 86 static void edgetdisklabel(dev_t, struct ed_softc *); 87 static void edgetdefaultlabel(struct ed_softc *, struct disklabel *); 88 89 dev_type_open(edmcaopen); 90 dev_type_close(edmcaclose); 91 dev_type_read(edmcaread); 92 dev_type_write(edmcawrite); 93 dev_type_ioctl(edmcaioctl); 94 dev_type_strategy(edmcastrategy); 95 dev_type_dump(edmcadump); 96 dev_type_size(edmcasize); 97 98 const struct bdevsw ed_bdevsw = { 99 .d_open = edmcaopen, 100 .d_close = edmcaclose, 101 .d_strategy = edmcastrategy, 102 .d_ioctl = edmcaioctl, 103 .d_dump = edmcadump, 104 .d_psize = edmcasize, 105 .d_discard = nodiscard, 106 .d_flag = D_DISK 107 }; 108 109 const struct cdevsw ed_cdevsw = { 110 .d_open = edmcaopen, 111 .d_close = edmcaclose, 112 .d_read = edmcaread, 113 .d_write = edmcawrite, 114 .d_ioctl = edmcaioctl, 115 .d_stop = nostop, 116 .d_tty = notty, 117 .d_poll = nopoll, 118 .d_mmap = nommap, 119 .d_kqfilter = nokqfilter, 120 .d_discard = nodiscard, 121 .d_flag = D_DISK 122 }; 123 124 static struct dkdriver eddkdriver = { 125 .d_strategy = edmcastrategy, 126 .d_minphys = minphys 127 }; 128 129 /* 130 * Just check if it's possible to identify the disk. 131 */ 132 static int 133 ed_mca_probe(device_t parent, cfdata_t cf, void *aux) 134 { 135 struct edc_mca_softc *sc = device_private(parent); 136 struct ed_attach_args *eda = aux; 137 u_int16_t cmd_args[2]; 138 int found = 1; 139 140 /* 141 * Get Device Configuration (09). 142 */ 143 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 144 cmd_args[1] = 0; 145 if (edc_run_cmd(sc, CMD_GET_DEV_CONF, eda->edc_drive, cmd_args, 2, 1)) 146 found = 0; 147 148 return (found); 149 } 150 151 static void 152 ed_mca_attach(device_t parent, device_t self, void *aux) 153 { 154 struct ed_softc *ed = device_private(self); 155 struct edc_mca_softc *sc = device_private(parent); 156 struct ed_attach_args *eda = aux; 157 char pbuf[8]; 158 int drv_flags; 159 160 ed->sc_dev = self; 161 ed->edc_softc = sc; 162 ed->sc_devno = eda->edc_drive; 163 edc_add_disk(sc, ed); 164 165 bufq_alloc(&ed->sc_q, "disksort", BUFQ_SORT_RAWBLOCK); 166 mutex_init(&ed->sc_q_lock, MUTEX_DEFAULT, IPL_VM); 167 168 if (ed_get_params(ed, &drv_flags)) { 169 printf(": IDENTIFY failed, no disk found\n"); 170 return; 171 } 172 173 format_bytes(pbuf, sizeof(pbuf), 174 (u_int64_t) ed->sc_capacity * DEV_BSIZE); 175 printf(": %s, %u cyl, %u head, %u sec, 512 bytes/sect x %u sectors\n", 176 pbuf, 177 ed->cyl, ed->heads, ed->sectors, 178 ed->sc_capacity); 179 180 printf("%s: %u spares/cyl, %s, %s, %s, %s, %s\n", 181 device_xname(ed->sc_dev), ed->spares, 182 (drv_flags & (1 << 0)) ? "NoRetries" : "Retries", 183 (drv_flags & (1 << 1)) ? "Removable" : "Fixed", 184 (drv_flags & (1 << 2)) ? "SkewedFormat" : "NoSkew", 185 (drv_flags & (1 << 3)) ? "ZeroDefect" : "Defects", 186 (drv_flags & (1 << 4)) ? "InvalidSecondary" : "SecondaryOK" 187 ); 188 189 /* 190 * Initialize and attach the disk structure. 191 */ 192 disk_init(&ed->sc_dk, device_xname(ed->sc_dev), &eddkdriver); 193 disk_attach(&ed->sc_dk); 194 rnd_attach_source(&ed->rnd_source, device_xname(ed->sc_dev), 195 RND_TYPE_DISK, RND_FLAG_DEFAULT); 196 197 ed->sc_flags |= EDF_INIT; 198 199 /* 200 * XXX We should try to discovery wedges here, but 201 * XXX that would mean being able to do I/O. Should 202 * XXX use config_defer() here. 203 */ 204 } 205 206 /* 207 * Read/write routine for a buffer. Validates the arguments and schedules the 208 * transfer. Does not wait for the transfer to complete. 209 */ 210 void 211 edmcastrategy(struct buf *bp) 212 { 213 struct ed_softc *ed; 214 struct disklabel *lp; 215 daddr_t blkno; 216 217 ed = device_lookup_private(&ed_cd, DISKUNIT(bp->b_dev)); 218 lp = ed->sc_dk.dk_label; 219 220 ATADEBUG_PRINT(("edmcastrategy (%s)\n", device_xname(ed->sc_dev)), 221 DEBUG_XFERS); 222 223 /* Valid request? */ 224 if (bp->b_blkno < 0 || 225 (bp->b_bcount % lp->d_secsize) != 0 || 226 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 227 bp->b_error = EINVAL; 228 goto done; 229 } 230 231 /* If device invalidated (e.g. media change, door open), error. */ 232 if ((ed->sc_flags & WDF_LOADED) == 0) { 233 bp->b_error = EIO; 234 goto done; 235 } 236 237 /* If it's a null transfer, return immediately. */ 238 if (bp->b_bcount == 0) 239 goto done; 240 241 /* 242 * Do bounds checking, adjust transfer. if error, process. 243 * If end of partition, just return. 244 */ 245 if (DISKPART(bp->b_dev) != RAW_PART && 246 bounds_check_with_label(&ed->sc_dk, bp, 247 (ed->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 248 goto done; 249 250 /* 251 * Now convert the block number to absolute and put it in 252 * terms of the device's logical block size. 253 */ 254 if (lp->d_secsize >= DEV_BSIZE) 255 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 256 else 257 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 258 259 if (DISKPART(bp->b_dev) != RAW_PART) 260 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 261 262 bp->b_rawblkno = blkno; 263 264 /* Queue transfer on drive, activate drive and controller if idle. */ 265 mutex_enter(&ed->sc_q_lock); 266 bufq_put(ed->sc_q, bp); 267 mutex_exit(&ed->sc_q_lock); 268 269 /* Ring the worker thread */ 270 wakeup(ed->edc_softc); 271 272 return; 273 done: 274 /* Toss transfer; we're done early. */ 275 bp->b_resid = bp->b_bcount; 276 biodone(bp); 277 } 278 279 int 280 edmcaread(dev_t dev, struct uio *uio, int flags) 281 { 282 ATADEBUG_PRINT(("edread\n"), DEBUG_XFERS); 283 return (physio(edmcastrategy, NULL, dev, B_READ, minphys, uio)); 284 } 285 286 int 287 edmcawrite(dev_t dev, struct uio *uio, int flags) 288 { 289 ATADEBUG_PRINT(("edwrite\n"), DEBUG_XFERS); 290 return (physio(edmcastrategy, NULL, dev, B_WRITE, minphys, uio)); 291 } 292 293 int 294 edmcaopen(dev_t dev, int flag, int fmt, struct lwp *l) 295 { 296 struct ed_softc *wd; 297 int part, error; 298 299 ATADEBUG_PRINT(("edopen\n"), DEBUG_FUNCS); 300 wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 301 if (wd == NULL || (wd->sc_flags & EDF_INIT) == 0) 302 return (ENXIO); 303 304 part = DISKPART(dev); 305 306 mutex_enter(&wd->sc_dk.dk_openlock); 307 308 /* 309 * If there are wedges, and this is not RAW_PART, then we 310 * need to fail. 311 */ 312 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 313 error = EBUSY; 314 goto bad1; 315 } 316 317 if (wd->sc_dk.dk_openmask != 0) { 318 /* 319 * If any partition is open, but the disk has been invalidated, 320 * disallow further opens. 321 */ 322 if ((wd->sc_flags & WDF_LOADED) == 0) { 323 error = EIO; 324 goto bad1; 325 } 326 } else { 327 if ((wd->sc_flags & WDF_LOADED) == 0) { 328 int s; 329 330 wd->sc_flags |= WDF_LOADED; 331 332 /* Load the physical device parameters. */ 333 s = splbio(); 334 ed_get_params(wd, NULL); 335 splx(s); 336 337 /* Load the partition info if not already loaded. */ 338 edgetdisklabel(dev, wd); 339 } 340 } 341 342 /* Check that the partition exists. */ 343 if (part != RAW_PART && 344 (part >= wd->sc_dk.dk_label->d_npartitions || 345 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 346 error = ENXIO; 347 goto bad1; 348 } 349 350 /* Insure only one open at a time. */ 351 switch (fmt) { 352 case S_IFCHR: 353 wd->sc_dk.dk_copenmask |= (1 << part); 354 break; 355 case S_IFBLK: 356 wd->sc_dk.dk_bopenmask |= (1 << part); 357 break; 358 } 359 wd->sc_dk.dk_openmask = 360 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 361 362 error = 0; 363 bad1: 364 mutex_exit(&wd->sc_dk.dk_openlock); 365 return (error); 366 } 367 368 int 369 edmcaclose(dev_t dev, int flag, int fmt, struct lwp *l) 370 { 371 struct ed_softc *wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 372 int part = DISKPART(dev); 373 374 ATADEBUG_PRINT(("edmcaclose\n"), DEBUG_FUNCS); 375 376 mutex_enter(&wd->sc_dk.dk_openlock); 377 378 switch (fmt) { 379 case S_IFCHR: 380 wd->sc_dk.dk_copenmask &= ~(1 << part); 381 break; 382 case S_IFBLK: 383 wd->sc_dk.dk_bopenmask &= ~(1 << part); 384 break; 385 } 386 wd->sc_dk.dk_openmask = 387 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 388 389 if (wd->sc_dk.dk_openmask == 0) { 390 #if 0 391 wd_flushcache(wd, AT_WAIT); 392 #endif 393 /* XXXX Must wait for I/O to complete! */ 394 395 if (! (wd->sc_flags & WDF_KLABEL)) 396 wd->sc_flags &= ~WDF_LOADED; 397 } 398 399 mutex_exit(&wd->sc_dk.dk_openlock); 400 401 return 0; 402 } 403 404 static void 405 edgetdefaultlabel(struct ed_softc *ed, struct disklabel *lp) 406 { 407 ATADEBUG_PRINT(("edgetdefaultlabel\n"), DEBUG_FUNCS); 408 memset(lp, 0, sizeof(struct disklabel)); 409 410 lp->d_secsize = DEV_BSIZE; 411 lp->d_ntracks = ed->heads; 412 lp->d_nsectors = ed->sectors; 413 lp->d_ncylinders = ed->cyl; 414 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 415 416 lp->d_type = DKTYPE_ESDI; 417 418 strncpy(lp->d_typename, "ESDI", 16); 419 strncpy(lp->d_packname, "fictitious", 16); 420 lp->d_secperunit = ed->sc_capacity; 421 lp->d_rpm = 3600; 422 lp->d_interleave = 1; 423 lp->d_flags = 0; 424 425 lp->d_partitions[RAW_PART].p_offset = 0; 426 lp->d_partitions[RAW_PART].p_size = 427 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 428 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 429 lp->d_npartitions = RAW_PART + 1; 430 431 lp->d_magic = DISKMAGIC; 432 lp->d_magic2 = DISKMAGIC; 433 lp->d_checksum = dkcksum(lp); 434 } 435 436 /* 437 * Fabricate a default disk label, and try to read the correct one. 438 */ 439 static void 440 edgetdisklabel(dev_t dev, struct ed_softc *ed) 441 { 442 struct disklabel *lp = ed->sc_dk.dk_label; 443 const char *errstring; 444 445 ATADEBUG_PRINT(("edgetdisklabel\n"), DEBUG_FUNCS); 446 447 memset(ed->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 448 449 edgetdefaultlabel(ed, lp); 450 451 errstring = readdisklabel( 452 EDLABELDEV(dev), edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 453 if (errstring) { 454 /* 455 * This probably happened because the drive's default 456 * geometry doesn't match the DOS geometry. We 457 * assume the DOS geometry is now in the label and try 458 * again. XXX This is a kluge. 459 */ 460 #if 0 461 if (wd->drvp->state > RECAL) 462 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 463 #endif 464 errstring = readdisklabel(EDLABELDEV(dev), 465 edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 466 } 467 if (errstring) { 468 printf("%s: %s\n", device_xname(ed->sc_dev), errstring); 469 return; 470 } 471 } 472 473 int 474 edmcaioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 475 { 476 struct ed_softc *ed = device_lookup_private(&ed_cd, DISKUNIT(dev)); 477 int error; 478 479 ATADEBUG_PRINT(("edioctl\n"), DEBUG_FUNCS); 480 481 if ((ed->sc_flags & WDF_LOADED) == 0) 482 return EIO; 483 484 error = disk_ioctl(&ed->sc_dk, dev, xfer, addr, flag, l); 485 if (error != EPASSTHROUGH) 486 return error; 487 488 switch (xfer) { 489 case DIOCWDINFO: 490 case DIOCSDINFO: 491 { 492 struct disklabel *lp; 493 494 lp = (struct disklabel *)addr; 495 496 if ((flag & FWRITE) == 0) 497 return EBADF; 498 499 mutex_enter(&ed->sc_dk.dk_openlock); 500 ed->sc_flags |= WDF_LABELLING; 501 502 error = setdisklabel(ed->sc_dk.dk_label, 503 lp, /*wd->sc_dk.dk_openmask : */0, 504 ed->sc_dk.dk_cpulabel); 505 if (error == 0) { 506 #if 0 507 if (wd->drvp->state > RECAL) 508 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 509 #endif 510 if (xfer == DIOCWDINFO) 511 error = writedisklabel(EDLABELDEV(dev), 512 edmcastrategy, ed->sc_dk.dk_label, 513 ed->sc_dk.dk_cpulabel); 514 } 515 516 ed->sc_flags &= ~WDF_LABELLING; 517 mutex_exit(&ed->sc_dk.dk_openlock); 518 return (error); 519 } 520 521 case DIOCKLABEL: 522 if (*(int *)addr) 523 ed->sc_flags |= WDF_KLABEL; 524 else 525 ed->sc_flags &= ~WDF_KLABEL; 526 return 0; 527 528 case DIOCWLABEL: 529 if ((flag & FWRITE) == 0) 530 return EBADF; 531 if (*(int *)addr) 532 ed->sc_flags |= WDF_WLABEL; 533 else 534 ed->sc_flags &= ~WDF_WLABEL; 535 return 0; 536 537 case DIOCGDEFLABEL: 538 edgetdefaultlabel(ed, (struct disklabel *)addr); 539 return 0; 540 541 #if 0 542 case DIOCWFORMAT: 543 if ((flag & FWRITE) == 0) 544 return EBADF; 545 { 546 register struct format_op *fop; 547 struct iovec aiov; 548 struct uio auio; 549 550 fop = (struct format_op *)addr; 551 aiov.iov_base = fop->df_buf; 552 aiov.iov_len = fop->df_count; 553 auio.uio_iov = &aiov; 554 auio.uio_iovcnt = 1; 555 auio.uio_resid = fop->df_count; 556 auio.uio_segflg = 0; 557 auio.uio_offset = 558 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 559 auio.uio_lwp = l; 560 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 561 &auio); 562 fop->df_count -= auio.uio_resid; 563 fop->df_reg[0] = wdc->sc_status; 564 fop->df_reg[1] = wdc->sc_error; 565 return error; 566 } 567 #endif 568 569 default: 570 return ENOTTY; 571 } 572 573 #ifdef DIAGNOSTIC 574 panic("edioctl: impossible"); 575 #endif 576 } 577 578 int 579 edmcasize(dev_t dev) 580 { 581 struct ed_softc *wd; 582 int part, omask; 583 int size; 584 585 ATADEBUG_PRINT(("edsize\n"), DEBUG_FUNCS); 586 587 wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 588 if (wd == NULL) 589 return (-1); 590 591 part = DISKPART(dev); 592 omask = wd->sc_dk.dk_openmask & (1 << part); 593 594 if (omask == 0 && edmcaopen(dev, 0, S_IFBLK, NULL) != 0) 595 return (-1); 596 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 597 size = -1; 598 else 599 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 600 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 601 if (omask == 0 && edmcaclose(dev, 0, S_IFBLK, NULL) != 0) 602 return (-1); 603 return (size); 604 } 605 606 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 607 static int eddoingadump = 0; 608 static int eddumprecalibrated = 0; 609 static int eddumpmulti = 1; 610 611 /* 612 * Dump core after a system crash. 613 */ 614 int 615 edmcadump(dev_t dev, daddr_t blkno, void *va, size_t size) 616 { 617 struct ed_softc *ed; /* disk unit to do the I/O */ 618 struct disklabel *lp; /* disk's disklabel */ 619 int part; 620 int nblks; /* total number of sectors left to write */ 621 int error; 622 623 /* Check if recursive dump; if so, punt. */ 624 if (eddoingadump) 625 return EFAULT; 626 eddoingadump = 1; 627 628 ed = device_lookup_private(&ed_cd, DISKUNIT(dev)); 629 if (ed == NULL) 630 return (ENXIO); 631 632 part = DISKPART(dev); 633 634 /* Make sure it was initialized. */ 635 if ((ed->sc_flags & EDF_INIT) == 0) 636 return ENXIO; 637 638 /* Convert to disk sectors. Request must be a multiple of size. */ 639 lp = ed->sc_dk.dk_label; 640 if ((size % lp->d_secsize) != 0) 641 return EFAULT; 642 nblks = size / lp->d_secsize; 643 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 644 645 /* Check transfer bounds against partition size. */ 646 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 647 return EINVAL; 648 649 /* Offset block number to start of partition. */ 650 blkno += lp->d_partitions[part].p_offset; 651 652 /* Recalibrate, if first dump transfer. */ 653 if (eddumprecalibrated == 0) { 654 eddumprecalibrated = 1; 655 eddumpmulti = 8; 656 #if 0 657 wd->drvp->state = RESET; 658 #endif 659 } 660 661 while (nblks > 0) { 662 error = edc_bio(ed->edc_softc, ed, va, blkno, 663 min(nblks, eddumpmulti) * lp->d_secsize, 0, 1); 664 if (error) 665 return (error); 666 667 /* update block count */ 668 nblks -= min(nblks, eddumpmulti); 669 blkno += min(nblks, eddumpmulti); 670 va = (char *)va + min(nblks, eddumpmulti) * lp->d_secsize; 671 } 672 673 eddoingadump = 0; 674 return (0); 675 } 676 677 static int 678 ed_get_params(struct ed_softc *ed, int *drv_flags) 679 { 680 u_int16_t cmd_args[2]; 681 682 /* 683 * Get Device Configuration (09). 684 */ 685 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 686 cmd_args[1] = 0; 687 if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno, 688 cmd_args, 2, 1)) 689 return (1); 690 691 ed->spares = ed->sense_data[1] >> 8; 692 if (drv_flags) 693 *drv_flags = ed->sense_data[1] & 0x1f; 694 ed->rba = ed->sense_data[2] | (ed->sense_data[3] << 16); 695 /* Instead of using: 696 ed->cyl = ed->sense_data[4]; 697 ed->heads = ed->sense_data[5] & 0xff; 698 ed->sectors = ed->sense_data[5] >> 8; 699 * we fabricate the numbers from RBA count, so that 700 * number of sectors is 32 and heads 64. This seems 701 * to be necessary for integrated ESDI controller. 702 */ 703 ed->sectors = 32; 704 ed->heads = 64; 705 ed->cyl = ed->rba / (ed->heads * ed->sectors); 706 ed->sc_capacity = ed->rba; 707 708 return (0); 709 } 710
Indexes created Mon Oct 13 05:10:05 GMT 2025