ed_mca.c revision 1.56
1 /* $NetBSD: ed_mca.c,v 1.56 2014/07/25 08:02:19 dholland 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 1.56 2014/07/25 08:02:19 dholland 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/rnd.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_flag = D_DISK 121 }; 122 123 static struct dkdriver eddkdriver = { edmcastrategy, minphys }; 124 125 /* 126 * Just check if it's possible to identify the disk. 127 */ 128 static int 129 ed_mca_probe(device_t parent, cfdata_t cf, void *aux) 130 { 131 struct edc_mca_softc *sc = device_private(parent); 132 struct ed_attach_args *eda = aux; 133 u_int16_t cmd_args[2]; 134 int found = 1; 135 136 /* 137 * Get Device Configuration (09). 138 */ 139 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 140 cmd_args[1] = 0; 141 if (edc_run_cmd(sc, CMD_GET_DEV_CONF, eda->edc_drive, cmd_args, 2, 1)) 142 found = 0; 143 144 return (found); 145 } 146 147 static void 148 ed_mca_attach(device_t parent, device_t self, void *aux) 149 { 150 struct ed_softc *ed = device_private(self); 151 struct edc_mca_softc *sc = device_private(parent); 152 struct ed_attach_args *eda = aux; 153 char pbuf[8]; 154 int drv_flags; 155 156 ed->sc_dev = self; 157 ed->edc_softc = sc; 158 ed->sc_devno = eda->edc_drive; 159 edc_add_disk(sc, ed); 160 161 bufq_alloc(&ed->sc_q, "disksort", BUFQ_SORT_RAWBLOCK); 162 mutex_init(&ed->sc_q_lock, MUTEX_DEFAULT, IPL_VM); 163 164 if (ed_get_params(ed, &drv_flags)) { 165 printf(": IDENTIFY failed, no disk found\n"); 166 return; 167 } 168 169 format_bytes(pbuf, sizeof(pbuf), 170 (u_int64_t) ed->sc_capacity * DEV_BSIZE); 171 printf(": %s, %u cyl, %u head, %u sec, 512 bytes/sect x %u sectors\n", 172 pbuf, 173 ed->cyl, ed->heads, ed->sectors, 174 ed->sc_capacity); 175 176 printf("%s: %u spares/cyl, %s, %s, %s, %s, %s\n", 177 device_xname(ed->sc_dev), ed->spares, 178 (drv_flags & (1 << 0)) ? "NoRetries" : "Retries", 179 (drv_flags & (1 << 1)) ? "Removable" : "Fixed", 180 (drv_flags & (1 << 2)) ? "SkewedFormat" : "NoSkew", 181 (drv_flags & (1 << 3)) ? "ZeroDefect" : "Defects", 182 (drv_flags & (1 << 4)) ? "InvalidSecondary" : "SecondaryOK" 183 ); 184 185 /* 186 * Initialize and attach the disk structure. 187 */ 188 disk_init(&ed->sc_dk, device_xname(ed->sc_dev), &eddkdriver); 189 disk_attach(&ed->sc_dk); 190 rnd_attach_source(&ed->rnd_source, device_xname(ed->sc_dev), 191 RND_TYPE_DISK, 0); 192 193 ed->sc_flags |= EDF_INIT; 194 195 /* 196 * XXX We should try to discovery wedges here, but 197 * XXX that would mean being able to do I/O. Should 198 * XXX use config_defer() here. 199 */ 200 } 201 202 /* 203 * Read/write routine for a buffer. Validates the arguments and schedules the 204 * transfer. Does not wait for the transfer to complete. 205 */ 206 void 207 edmcastrategy(struct buf *bp) 208 { 209 struct ed_softc *ed; 210 struct disklabel *lp; 211 daddr_t blkno; 212 213 ed = device_lookup_private(&ed_cd, DISKUNIT(bp->b_dev)); 214 lp = ed->sc_dk.dk_label; 215 216 ATADEBUG_PRINT(("edmcastrategy (%s)\n", device_xname(ed->sc_dev)), 217 DEBUG_XFERS); 218 219 /* Valid request? */ 220 if (bp->b_blkno < 0 || 221 (bp->b_bcount % lp->d_secsize) != 0 || 222 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 223 bp->b_error = EINVAL; 224 goto done; 225 } 226 227 /* If device invalidated (e.g. media change, door open), error. */ 228 if ((ed->sc_flags & WDF_LOADED) == 0) { 229 bp->b_error = EIO; 230 goto done; 231 } 232 233 /* If it's a null transfer, return immediately. */ 234 if (bp->b_bcount == 0) 235 goto done; 236 237 /* 238 * Do bounds checking, adjust transfer. if error, process. 239 * If end of partition, just return. 240 */ 241 if (DISKPART(bp->b_dev) != RAW_PART && 242 bounds_check_with_label(&ed->sc_dk, bp, 243 (ed->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 244 goto done; 245 246 /* 247 * Now convert the block number to absolute and put it in 248 * terms of the device's logical block size. 249 */ 250 if (lp->d_secsize >= DEV_BSIZE) 251 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 252 else 253 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 254 255 if (DISKPART(bp->b_dev) != RAW_PART) 256 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 257 258 bp->b_rawblkno = blkno; 259 260 /* Queue transfer on drive, activate drive and controller if idle. */ 261 mutex_enter(&ed->sc_q_lock); 262 bufq_put(ed->sc_q, bp); 263 mutex_exit(&ed->sc_q_lock); 264 265 /* Ring the worker thread */ 266 wakeup(ed->edc_softc); 267 268 return; 269 done: 270 /* Toss transfer; we're done early. */ 271 bp->b_resid = bp->b_bcount; 272 biodone(bp); 273 } 274 275 int 276 edmcaread(dev_t dev, struct uio *uio, int flags) 277 { 278 ATADEBUG_PRINT(("edread\n"), DEBUG_XFERS); 279 return (physio(edmcastrategy, NULL, dev, B_READ, minphys, uio)); 280 } 281 282 int 283 edmcawrite(dev_t dev, struct uio *uio, int flags) 284 { 285 ATADEBUG_PRINT(("edwrite\n"), DEBUG_XFERS); 286 return (physio(edmcastrategy, NULL, dev, B_WRITE, minphys, uio)); 287 } 288 289 int 290 edmcaopen(dev_t dev, int flag, int fmt, struct lwp *l) 291 { 292 struct ed_softc *wd; 293 int part, error; 294 295 ATADEBUG_PRINT(("edopen\n"), DEBUG_FUNCS); 296 wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 297 if (wd == NULL || (wd->sc_flags & EDF_INIT) == 0) 298 return (ENXIO); 299 300 part = DISKPART(dev); 301 302 mutex_enter(&wd->sc_dk.dk_openlock); 303 304 /* 305 * If there are wedges, and this is not RAW_PART, then we 306 * need to fail. 307 */ 308 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 309 error = EBUSY; 310 goto bad1; 311 } 312 313 if (wd->sc_dk.dk_openmask != 0) { 314 /* 315 * If any partition is open, but the disk has been invalidated, 316 * disallow further opens. 317 */ 318 if ((wd->sc_flags & WDF_LOADED) == 0) { 319 error = EIO; 320 goto bad1; 321 } 322 } else { 323 if ((wd->sc_flags & WDF_LOADED) == 0) { 324 int s; 325 326 wd->sc_flags |= WDF_LOADED; 327 328 /* Load the physical device parameters. */ 329 s = splbio(); 330 ed_get_params(wd, NULL); 331 splx(s); 332 333 /* Load the partition info if not already loaded. */ 334 edgetdisklabel(dev, wd); 335 } 336 } 337 338 /* Check that the partition exists. */ 339 if (part != RAW_PART && 340 (part >= wd->sc_dk.dk_label->d_npartitions || 341 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 342 error = ENXIO; 343 goto bad1; 344 } 345 346 /* Insure only one open at a time. */ 347 switch (fmt) { 348 case S_IFCHR: 349 wd->sc_dk.dk_copenmask |= (1 << part); 350 break; 351 case S_IFBLK: 352 wd->sc_dk.dk_bopenmask |= (1 << part); 353 break; 354 } 355 wd->sc_dk.dk_openmask = 356 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 357 358 error = 0; 359 bad1: 360 mutex_exit(&wd->sc_dk.dk_openlock); 361 return (error); 362 } 363 364 int 365 edmcaclose(dev_t dev, int flag, int fmt, struct lwp *l) 366 { 367 struct ed_softc *wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 368 int part = DISKPART(dev); 369 370 ATADEBUG_PRINT(("edmcaclose\n"), DEBUG_FUNCS); 371 372 mutex_enter(&wd->sc_dk.dk_openlock); 373 374 switch (fmt) { 375 case S_IFCHR: 376 wd->sc_dk.dk_copenmask &= ~(1 << part); 377 break; 378 case S_IFBLK: 379 wd->sc_dk.dk_bopenmask &= ~(1 << part); 380 break; 381 } 382 wd->sc_dk.dk_openmask = 383 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 384 385 if (wd->sc_dk.dk_openmask == 0) { 386 #if 0 387 wd_flushcache(wd, AT_WAIT); 388 #endif 389 /* XXXX Must wait for I/O to complete! */ 390 391 if (! (wd->sc_flags & WDF_KLABEL)) 392 wd->sc_flags &= ~WDF_LOADED; 393 } 394 395 mutex_exit(&wd->sc_dk.dk_openlock); 396 397 return 0; 398 } 399 400 static void 401 edgetdefaultlabel(struct ed_softc *ed, struct disklabel *lp) 402 { 403 ATADEBUG_PRINT(("edgetdefaultlabel\n"), DEBUG_FUNCS); 404 memset(lp, 0, sizeof(struct disklabel)); 405 406 lp->d_secsize = DEV_BSIZE; 407 lp->d_ntracks = ed->heads; 408 lp->d_nsectors = ed->sectors; 409 lp->d_ncylinders = ed->cyl; 410 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 411 412 lp->d_type = DTYPE_ESDI; 413 414 strncpy(lp->d_typename, "ESDI", 16); 415 strncpy(lp->d_packname, "fictitious", 16); 416 lp->d_secperunit = ed->sc_capacity; 417 lp->d_rpm = 3600; 418 lp->d_interleave = 1; 419 lp->d_flags = 0; 420 421 lp->d_partitions[RAW_PART].p_offset = 0; 422 lp->d_partitions[RAW_PART].p_size = 423 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 424 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 425 lp->d_npartitions = RAW_PART + 1; 426 427 lp->d_magic = DISKMAGIC; 428 lp->d_magic2 = DISKMAGIC; 429 lp->d_checksum = dkcksum(lp); 430 } 431 432 /* 433 * Fabricate a default disk label, and try to read the correct one. 434 */ 435 static void 436 edgetdisklabel(dev_t dev, struct ed_softc *ed) 437 { 438 struct disklabel *lp = ed->sc_dk.dk_label; 439 const char *errstring; 440 441 ATADEBUG_PRINT(("edgetdisklabel\n"), DEBUG_FUNCS); 442 443 memset(ed->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 444 445 edgetdefaultlabel(ed, lp); 446 447 errstring = readdisklabel( 448 EDLABELDEV(dev), edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 449 if (errstring) { 450 /* 451 * This probably happened because the drive's default 452 * geometry doesn't match the DOS geometry. We 453 * assume the DOS geometry is now in the label and try 454 * again. XXX This is a kluge. 455 */ 456 #if 0 457 if (wd->drvp->state > RECAL) 458 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 459 #endif 460 errstring = readdisklabel(EDLABELDEV(dev), 461 edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 462 } 463 if (errstring) { 464 printf("%s: %s\n", device_xname(ed->sc_dev), errstring); 465 return; 466 } 467 } 468 469 int 470 edmcaioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) 471 { 472 struct ed_softc *ed = device_lookup_private(&ed_cd, DISKUNIT(dev)); 473 int error; 474 475 ATADEBUG_PRINT(("edioctl\n"), DEBUG_FUNCS); 476 477 if ((ed->sc_flags & WDF_LOADED) == 0) 478 return EIO; 479 480 switch (xfer) { 481 case DIOCGDINFO: 482 *(struct disklabel *)addr = *(ed->sc_dk.dk_label); 483 return 0; 484 485 case DIOCGPART: 486 ((struct partinfo *)addr)->disklab = ed->sc_dk.dk_label; 487 ((struct partinfo *)addr)->part = 488 &ed->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 489 return 0; 490 491 case DIOCWDINFO: 492 case DIOCSDINFO: 493 { 494 struct disklabel *lp; 495 496 lp = (struct disklabel *)addr; 497 498 if ((flag & FWRITE) == 0) 499 return EBADF; 500 501 mutex_enter(&ed->sc_dk.dk_openlock); 502 ed->sc_flags |= WDF_LABELLING; 503 504 error = setdisklabel(ed->sc_dk.dk_label, 505 lp, /*wd->sc_dk.dk_openmask : */0, 506 ed->sc_dk.dk_cpulabel); 507 if (error == 0) { 508 #if 0 509 if (wd->drvp->state > RECAL) 510 wd->drvp->drive_flags |= ATA_DRIVE_RESET; 511 #endif 512 if (xfer == DIOCWDINFO) 513 error = writedisklabel(EDLABELDEV(dev), 514 edmcastrategy, ed->sc_dk.dk_label, 515 ed->sc_dk.dk_cpulabel); 516 } 517 518 ed->sc_flags &= ~WDF_LABELLING; 519 mutex_exit(&ed->sc_dk.dk_openlock); 520 return (error); 521 } 522 523 case DIOCKLABEL: 524 if (*(int *)addr) 525 ed->sc_flags |= WDF_KLABEL; 526 else 527 ed->sc_flags &= ~WDF_KLABEL; 528 return 0; 529 530 case DIOCWLABEL: 531 if ((flag & FWRITE) == 0) 532 return EBADF; 533 if (*(int *)addr) 534 ed->sc_flags |= WDF_WLABEL; 535 else 536 ed->sc_flags &= ~WDF_WLABEL; 537 return 0; 538 539 case DIOCGDEFLABEL: 540 edgetdefaultlabel(ed, (struct disklabel *)addr); 541 return 0; 542 543 #if 0 544 case DIOCWFORMAT: 545 if ((flag & FWRITE) == 0) 546 return EBADF; 547 { 548 register struct format_op *fop; 549 struct iovec aiov; 550 struct uio auio; 551 552 fop = (struct format_op *)addr; 553 aiov.iov_base = fop->df_buf; 554 aiov.iov_len = fop->df_count; 555 auio.uio_iov = &aiov; 556 auio.uio_iovcnt = 1; 557 auio.uio_resid = fop->df_count; 558 auio.uio_segflg = 0; 559 auio.uio_offset = 560 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 561 auio.uio_lwp = l; 562 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 563 &auio); 564 fop->df_count -= auio.uio_resid; 565 fop->df_reg[0] = wdc->sc_status; 566 fop->df_reg[1] = wdc->sc_error; 567 return error; 568 } 569 #endif 570 571 case DIOCAWEDGE: 572 { 573 struct dkwedge_info *dkw = (void *) addr; 574 575 if ((flag & FWRITE) == 0) 576 return (EBADF); 577 578 /* If the ioctl happens here, the parent is us. */ 579 strlcpy(dkw->dkw_parent, device_xname(ed->sc_dev), 580 sizeof(dkw->dkw_parent)); 581 return (dkwedge_add(dkw)); 582 } 583 584 case DIOCDWEDGE: 585 { 586 struct dkwedge_info *dkw = (void *) addr; 587 588 if ((flag & FWRITE) == 0) 589 return (EBADF); 590 591 /* If the ioctl happens here, the parent is us. */ 592 strlcpy(dkw->dkw_parent, device_xname(ed->sc_dev), 593 sizeof(dkw->dkw_parent)); 594 return (dkwedge_del(dkw)); 595 } 596 597 case DIOCLWEDGES: 598 { 599 struct dkwedge_list *dkwl = (void *) addr; 600 601 return (dkwedge_list(&ed->sc_dk, dkwl, l)); 602 } 603 604 default: 605 return ENOTTY; 606 } 607 608 #ifdef DIAGNOSTIC 609 panic("edioctl: impossible"); 610 #endif 611 } 612 613 int 614 edmcasize(dev_t dev) 615 { 616 struct ed_softc *wd; 617 int part, omask; 618 int size; 619 620 ATADEBUG_PRINT(("edsize\n"), DEBUG_FUNCS); 621 622 wd = device_lookup_private(&ed_cd, DISKUNIT(dev)); 623 if (wd == NULL) 624 return (-1); 625 626 part = DISKPART(dev); 627 omask = wd->sc_dk.dk_openmask & (1 << part); 628 629 if (omask == 0 && edmcaopen(dev, 0, S_IFBLK, NULL) != 0) 630 return (-1); 631 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 632 size = -1; 633 else 634 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 635 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 636 if (omask == 0 && edmcaclose(dev, 0, S_IFBLK, NULL) != 0) 637 return (-1); 638 return (size); 639 } 640 641 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 642 static int eddoingadump = 0; 643 static int eddumprecalibrated = 0; 644 static int eddumpmulti = 1; 645 646 /* 647 * Dump core after a system crash. 648 */ 649 int 650 edmcadump(dev_t dev, daddr_t blkno, void *va, size_t size) 651 { 652 struct ed_softc *ed; /* disk unit to do the I/O */ 653 struct disklabel *lp; /* disk's disklabel */ 654 int part; 655 int nblks; /* total number of sectors left to write */ 656 int error; 657 658 /* Check if recursive dump; if so, punt. */ 659 if (eddoingadump) 660 return EFAULT; 661 eddoingadump = 1; 662 663 ed = device_lookup_private(&ed_cd, DISKUNIT(dev)); 664 if (ed == NULL) 665 return (ENXIO); 666 667 part = DISKPART(dev); 668 669 /* Make sure it was initialized. */ 670 if ((ed->sc_flags & EDF_INIT) == 0) 671 return ENXIO; 672 673 /* Convert to disk sectors. Request must be a multiple of size. */ 674 lp = ed->sc_dk.dk_label; 675 if ((size % lp->d_secsize) != 0) 676 return EFAULT; 677 nblks = size / lp->d_secsize; 678 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 679 680 /* Check transfer bounds against partition size. */ 681 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 682 return EINVAL; 683 684 /* Offset block number to start of partition. */ 685 blkno += lp->d_partitions[part].p_offset; 686 687 /* Recalibrate, if first dump transfer. */ 688 if (eddumprecalibrated == 0) { 689 eddumprecalibrated = 1; 690 eddumpmulti = 8; 691 #if 0 692 wd->drvp->state = RESET; 693 #endif 694 } 695 696 while (nblks > 0) { 697 error = edc_bio(ed->edc_softc, ed, va, blkno, 698 min(nblks, eddumpmulti) * lp->d_secsize, 0, 1); 699 if (error) 700 return (error); 701 702 /* update block count */ 703 nblks -= min(nblks, eddumpmulti); 704 blkno += min(nblks, eddumpmulti); 705 va = (char *)va + min(nblks, eddumpmulti) * lp->d_secsize; 706 } 707 708 eddoingadump = 0; 709 return (0); 710 } 711 712 static int 713 ed_get_params(struct ed_softc *ed, int *drv_flags) 714 { 715 u_int16_t cmd_args[2]; 716 717 /* 718 * Get Device Configuration (09). 719 */ 720 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 721 cmd_args[1] = 0; 722 if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno, 723 cmd_args, 2, 1)) 724 return (1); 725 726 ed->spares = ed->sense_data[1] >> 8; 727 if (drv_flags) 728 *drv_flags = ed->sense_data[1] & 0x1f; 729 ed->rba = ed->sense_data[2] | (ed->sense_data[3] << 16); 730 /* Instead of using: 731 ed->cyl = ed->sense_data[4]; 732 ed->heads = ed->sense_data[5] & 0xff; 733 ed->sectors = ed->sense_data[5] >> 8; 734 * we fabricate the numbers from RBA count, so that 735 * number of sectors is 32 and heads 64. This seems 736 * to be necessary for integrated ESDI controller. 737 */ 738 ed->sectors = 32; 739 ed->heads = 64; 740 ed->cyl = ed->rba / (ed->heads * ed->sectors); 741 ed->sc_capacity = ed->rba; 742 743 return (0); 744 } 745
Indexes created Mon Oct 13 01:09:56 GMT 2025