ed_mca.c revision 1.29.4.3
1 /* $NetBSD: ed_mca.c,v 1.29.4.3 2007/09/03 14:35:52 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Jaromir Dolecek. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /* 37 * Disk drive goo for MCA ESDI controller driver. 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: ed_mca.c,v 1.29.4.3 2007/09/03 14:35:52 yamt Exp $"); 42 43 #include "rnd.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/conf.h> 49 #include <sys/file.h> 50 #include <sys/stat.h> 51 #include <sys/ioctl.h> 52 #include <sys/buf.h> 53 #include <sys/bufq.h> 54 #include <sys/uio.h> 55 #include <sys/malloc.h> 56 #include <sys/device.h> 57 #include <sys/disklabel.h> 58 #include <sys/disk.h> 59 #include <sys/syslog.h> 60 #include <sys/proc.h> 61 #include <sys/vnode.h> 62 #if NRND > 0 63 #include <sys/rnd.h> 64 #endif 65 66 #include <machine/intr.h> 67 #include <machine/bus.h> 68 69 #include <dev/mca/mcavar.h> 70 71 #include <dev/mca/edcreg.h> 72 #include <dev/mca/edvar.h> 73 #include <dev/mca/edcvar.h> 74 75 /* #define ATADEBUG */ 76 77 #ifdef ATADEBUG 78 #define ATADEBUG_PRINT(args, level) printf args 79 #else 80 #define ATADEBUG_PRINT(args, level) 81 #endif 82 83 #define EDLABELDEV(dev) (MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART)) 84 85 static int ed_mca_probe (struct device *, struct cfdata *, void *); 86 static void ed_mca_attach (struct device *, struct device *, void *); 87 88 CFATTACH_DECL(ed_mca, sizeof(struct ed_softc), 89 ed_mca_probe, ed_mca_attach, NULL, NULL); 90 91 extern struct cfdriver ed_cd; 92 93 static int ed_get_params(struct ed_softc *, int *); 94 static void edgetdisklabel(dev_t, struct ed_softc *); 95 static void edgetdefaultlabel(struct ed_softc *, struct disklabel *); 96 97 dev_type_open(edmcaopen); 98 dev_type_close(edmcaclose); 99 dev_type_read(edmcaread); 100 dev_type_write(edmcawrite); 101 dev_type_ioctl(edmcaioctl); 102 dev_type_strategy(edmcastrategy); 103 dev_type_dump(edmcadump); 104 dev_type_size(edmcasize); 105 106 const struct bdevsw ed_bdevsw = { 107 edmcaopen, edmcaclose, edmcastrategy, edmcaioctl, 108 edmcadump, edmcasize, D_DISK 109 }; 110 111 const struct cdevsw ed_cdevsw = { 112 edmcaopen, edmcaclose, edmcaread, edmcawrite, edmcaioctl, 113 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 114 }; 115 116 static struct dkdriver eddkdriver = { edmcastrategy, minphys }; 117 118 /* 119 * Just check if it's possible to identify the disk. 120 */ 121 static int 122 ed_mca_probe(struct device *parent, struct cfdata *cf, 123 void *aux) 124 { 125 u_int16_t cmd_args[2]; 126 struct edc_mca_softc *sc = (void *) parent; 127 struct ed_attach_args *eda = (struct ed_attach_args *) aux; 128 int found = 1; 129 130 /* 131 * Get Device Configuration (09). 132 */ 133 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 134 cmd_args[1] = 0; 135 if (edc_run_cmd(sc, CMD_GET_DEV_CONF, eda->edc_drive, cmd_args, 2, 1)) 136 found = 0; 137 138 return (found); 139 } 140 141 static void 142 ed_mca_attach(parent, self, aux) 143 struct device *parent, *self; 144 void *aux; 145 { 146 struct ed_softc *ed = device_private(self); 147 struct edc_mca_softc *sc = device_private(parent); 148 struct ed_attach_args *eda = (struct ed_attach_args *) aux; 149 char pbuf[8]; 150 int drv_flags; 151 152 ed->edc_softc = sc; 153 ed->sc_devno = eda->edc_drive; 154 edc_add_disk(sc, ed); 155 156 bufq_alloc(&ed->sc_q, "disksort", BUFQ_SORT_RAWBLOCK); 157 simple_lock_init(&ed->sc_q_lock); 158 159 if (ed_get_params(ed, &drv_flags)) { 160 printf(": IDENTIFY failed, no disk found\n"); 161 return; 162 } 163 164 format_bytes(pbuf, sizeof(pbuf), 165 (u_int64_t) ed->sc_capacity * DEV_BSIZE); 166 printf(": %s, %u cyl, %u head, %u sec, 512 bytes/sect x %u sectors\n", 167 pbuf, 168 ed->cyl, ed->heads, ed->sectors, 169 ed->sc_capacity); 170 171 printf("%s: %u spares/cyl, %s, %s, %s, %s, %s\n", 172 ed->sc_dev.dv_xname, ed->spares, 173 (drv_flags & (1 << 0)) ? "NoRetries" : "Retries", 174 (drv_flags & (1 << 1)) ? "Removable" : "Fixed", 175 (drv_flags & (1 << 2)) ? "SkewedFormat" : "NoSkew", 176 (drv_flags & (1 << 3)) ? "ZeroDefect" : "Defects", 177 (drv_flags & (1 << 4)) ? "InvalidSecondary" : "SecondaryOK" 178 ); 179 180 /* 181 * Initialize and attach the disk structure. 182 */ 183 ed->sc_dk.dk_driver = &eddkdriver; 184 ed->sc_dk.dk_name = ed->sc_dev.dv_xname; 185 disk_attach(&ed->sc_dk); 186 #if NRND > 0 187 rnd_attach_source(&ed->rnd_source, ed->sc_dev.dv_xname, 188 RND_TYPE_DISK, 0); 189 #endif 190 191 ed->sc_flags |= EDF_INIT; 192 193 /* 194 * XXX We should try to discovery wedges here, but 195 * XXX that would mean being able to do I/O. Should 196 * XXX use config_defer() here. 197 */ 198 } 199 200 /* 201 * Read/write routine for a buffer. Validates the arguments and schedules the 202 * transfer. Does not wait for the transfer to complete. 203 */ 204 void 205 edmcastrategy(bp) 206 struct buf *bp; 207 { 208 struct ed_softc *ed = device_lookup(&ed_cd, DISKUNIT(bp->b_dev)); 209 struct disklabel *lp = ed->sc_dk.dk_label; 210 daddr_t blkno; 211 212 ATADEBUG_PRINT(("edmcastrategy (%s)\n", ed->sc_dev.dv_xname), 213 DEBUG_XFERS); 214 215 /* Valid request? */ 216 if (bp->b_blkno < 0 || 217 (bp->b_bcount % lp->d_secsize) != 0 || 218 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 219 bp->b_error = EINVAL; 220 goto done; 221 } 222 223 /* If device invalidated (e.g. media change, door open), error. */ 224 if ((ed->sc_flags & WDF_LOADED) == 0) { 225 bp->b_error = EIO; 226 goto done; 227 } 228 229 /* If it's a null transfer, return immediately. */ 230 if (bp->b_bcount == 0) 231 goto done; 232 233 /* 234 * Do bounds checking, adjust transfer. if error, process. 235 * If end of partition, just return. 236 */ 237 if (DISKPART(bp->b_dev) != RAW_PART && 238 bounds_check_with_label(&ed->sc_dk, bp, 239 (ed->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 240 goto done; 241 242 /* 243 * Now convert the block number to absolute and put it in 244 * terms of the device's logical block size. 245 */ 246 if (lp->d_secsize >= DEV_BSIZE) 247 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 248 else 249 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 250 251 if (DISKPART(bp->b_dev) != RAW_PART) 252 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 253 254 bp->b_rawblkno = blkno; 255 256 /* Queue transfer on drive, activate drive and controller if idle. */ 257 simple_lock(&ed->sc_q_lock); 258 BUFQ_PUT(ed->sc_q, bp); 259 simple_unlock(&ed->sc_q_lock); 260 261 /* Ring the worker thread */ 262 wakeup_one(ed->edc_softc); 263 264 return; 265 done: 266 /* Toss transfer; we're done early. */ 267 bp->b_resid = bp->b_bcount; 268 biodone(bp); 269 } 270 271 int 272 edmcaread(dev_t dev, struct uio *uio, int flags) 273 { 274 ATADEBUG_PRINT(("edread\n"), DEBUG_XFERS); 275 return (physio(edmcastrategy, NULL, dev, B_READ, minphys, uio)); 276 } 277 278 int 279 edmcawrite(dev_t dev, struct uio *uio, int flags) 280 { 281 ATADEBUG_PRINT(("edwrite\n"), DEBUG_XFERS); 282 return (physio(edmcastrategy, NULL, dev, B_WRITE, minphys, uio)); 283 } 284 285 int 286 edmcaopen(dev_t dev, int flag, int fmt, struct lwp *l) 287 { 288 struct ed_softc *wd; 289 int part, error; 290 291 ATADEBUG_PRINT(("edopen\n"), DEBUG_FUNCS); 292 wd = device_lookup(&ed_cd, DISKUNIT(dev)); 293 if (wd == NULL || (wd->sc_flags & EDF_INIT) == 0) 294 return (ENXIO); 295 296 part = DISKPART(dev); 297 298 mutex_enter(&wd->sc_dk.dk_openlock); 299 300 /* 301 * If there are wedges, and this is not RAW_PART, then we 302 * need to fail. 303 */ 304 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 305 error = EBUSY; 306 goto bad1; 307 } 308 309 if (wd->sc_dk.dk_openmask != 0) { 310 /* 311 * If any partition is open, but the disk has been invalidated, 312 * disallow further opens. 313 */ 314 if ((wd->sc_flags & WDF_LOADED) == 0) { 315 error = EIO; 316 goto bad1; 317 } 318 } else { 319 if ((wd->sc_flags & WDF_LOADED) == 0) { 320 int s; 321 322 wd->sc_flags |= WDF_LOADED; 323 324 /* Load the physical device parameters. */ 325 s = splbio(); 326 ed_get_params(wd, NULL); 327 splx(s); 328 329 /* Load the partition info if not already loaded. */ 330 edgetdisklabel(dev, wd); 331 } 332 } 333 334 /* Check that the partition exists. */ 335 if (part != RAW_PART && 336 (part >= wd->sc_dk.dk_label->d_npartitions || 337 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 338 error = ENXIO; 339 goto bad1; 340 } 341 342 /* Insure only one open at a time. */ 343 switch (fmt) { 344 case S_IFCHR: 345 wd->sc_dk.dk_copenmask |= (1 << part); 346 break; 347 case S_IFBLK: 348 wd->sc_dk.dk_bopenmask |= (1 << part); 349 break; 350 } 351 wd->sc_dk.dk_openmask = 352 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 353 354 error = 0; 355 bad1: 356 mutex_exit(&wd->sc_dk.dk_openlock); 357 return (error); 358 } 359 360 int 361 edmcaclose(dev_t dev, int flag, int fmt, struct lwp *l) 362 { 363 struct ed_softc *wd = device_lookup(&ed_cd, DISKUNIT(dev)); 364 int part = DISKPART(dev); 365 366 ATADEBUG_PRINT(("edmcaclose\n"), DEBUG_FUNCS); 367 368 mutex_enter(&wd->sc_dk.dk_openlock); 369 370 switch (fmt) { 371 case S_IFCHR: 372 wd->sc_dk.dk_copenmask &= ~(1 << part); 373 break; 374 case S_IFBLK: 375 wd->sc_dk.dk_bopenmask &= ~(1 << part); 376 break; 377 } 378 wd->sc_dk.dk_openmask = 379 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 380 381 if (wd->sc_dk.dk_openmask == 0) { 382 #if 0 383 wd_flushcache(wd, AT_WAIT); 384 #endif 385 /* XXXX Must wait for I/O to complete! */ 386 387 if (! (wd->sc_flags & WDF_KLABEL)) 388 wd->sc_flags &= ~WDF_LOADED; 389 } 390 391 mutex_exit(&wd->sc_dk.dk_openlock); 392 393 return 0; 394 } 395 396 static void 397 edgetdefaultlabel(ed, lp) 398 struct ed_softc *ed; 399 struct disklabel *lp; 400 { 401 ATADEBUG_PRINT(("edgetdefaultlabel\n"), DEBUG_FUNCS); 402 memset(lp, 0, sizeof(struct disklabel)); 403 404 lp->d_secsize = DEV_BSIZE; 405 lp->d_ntracks = ed->heads; 406 lp->d_nsectors = ed->sectors; 407 lp->d_ncylinders = ed->cyl; 408 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 409 410 lp->d_type = DTYPE_ESDI; 411 412 strncpy(lp->d_typename, "ESDI", 16); 413 strncpy(lp->d_packname, "fictitious", 16); 414 lp->d_secperunit = ed->sc_capacity; 415 lp->d_rpm = 3600; 416 lp->d_interleave = 1; 417 lp->d_flags = 0; 418 419 lp->d_partitions[RAW_PART].p_offset = 0; 420 lp->d_partitions[RAW_PART].p_size = 421 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 422 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 423 lp->d_npartitions = RAW_PART + 1; 424 425 lp->d_magic = DISKMAGIC; 426 lp->d_magic2 = DISKMAGIC; 427 lp->d_checksum = dkcksum(lp); 428 } 429 430 /* 431 * Fabricate a default disk label, and try to read the correct one. 432 */ 433 static void 434 edgetdisklabel(dev, ed) 435 dev_t dev; 436 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 |= 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", ed->sc_dev.dv_xname, errstring); 465 return; 466 } 467 } 468 469 int 470 edmcaioctl(dev, xfer, addr, flag, l) 471 dev_t dev; 472 u_long xfer; 473 void *addr; 474 int flag; 475 struct lwp *l; 476 { 477 struct ed_softc *ed = device_lookup(&ed_cd, DISKUNIT(dev)); 478 int error; 479 480 ATADEBUG_PRINT(("edioctl\n"), DEBUG_FUNCS); 481 482 if ((ed->sc_flags & WDF_LOADED) == 0) 483 return EIO; 484 485 switch (xfer) { 486 case DIOCGDINFO: 487 *(struct disklabel *)addr = *(ed->sc_dk.dk_label); 488 return 0; 489 490 case DIOCGPART: 491 ((struct partinfo *)addr)->disklab = ed->sc_dk.dk_label; 492 ((struct partinfo *)addr)->part = 493 &ed->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 494 return 0; 495 496 case DIOCWDINFO: 497 case DIOCSDINFO: 498 { 499 struct disklabel *lp; 500 501 lp = (struct disklabel *)addr; 502 503 if ((flag & FWRITE) == 0) 504 return EBADF; 505 506 mutex_enter(&ed->sc_dk.dk_openlock); 507 ed->sc_flags |= WDF_LABELLING; 508 509 error = setdisklabel(ed->sc_dk.dk_label, 510 lp, /*wd->sc_dk.dk_openmask : */0, 511 ed->sc_dk.dk_cpulabel); 512 if (error == 0) { 513 #if 0 514 if (wd->drvp->state > RECAL) 515 wd->drvp->drive_flags |= DRIVE_RESET; 516 #endif 517 if (xfer == DIOCWDINFO) 518 error = writedisklabel(EDLABELDEV(dev), 519 edmcastrategy, ed->sc_dk.dk_label, 520 ed->sc_dk.dk_cpulabel); 521 } 522 523 ed->sc_flags &= ~WDF_LABELLING; 524 mutex_exit(&ed->sc_dk.dk_openlock); 525 return (error); 526 } 527 528 case DIOCKLABEL: 529 if (*(int *)addr) 530 ed->sc_flags |= WDF_KLABEL; 531 else 532 ed->sc_flags &= ~WDF_KLABEL; 533 return 0; 534 535 case DIOCWLABEL: 536 if ((flag & FWRITE) == 0) 537 return EBADF; 538 if (*(int *)addr) 539 ed->sc_flags |= WDF_WLABEL; 540 else 541 ed->sc_flags &= ~WDF_WLABEL; 542 return 0; 543 544 case DIOCGDEFLABEL: 545 edgetdefaultlabel(ed, (struct disklabel *)addr); 546 return 0; 547 548 #if 0 549 case DIOCWFORMAT: 550 if ((flag & FWRITE) == 0) 551 return EBADF; 552 { 553 register struct format_op *fop; 554 struct iovec aiov; 555 struct uio auio; 556 557 fop = (struct format_op *)addr; 558 aiov.iov_base = fop->df_buf; 559 aiov.iov_len = fop->df_count; 560 auio.uio_iov = &aiov; 561 auio.uio_iovcnt = 1; 562 auio.uio_resid = fop->df_count; 563 auio.uio_segflg = 0; 564 auio.uio_offset = 565 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 566 auio.uio_lwp = l; 567 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 568 &auio); 569 fop->df_count -= auio.uio_resid; 570 fop->df_reg[0] = wdc->sc_status; 571 fop->df_reg[1] = wdc->sc_error; 572 return error; 573 } 574 #endif 575 576 case DIOCAWEDGE: 577 { 578 struct dkwedge_info *dkw = (void *) addr; 579 580 if ((flag & FWRITE) == 0) 581 return (EBADF); 582 583 /* If the ioctl happens here, the parent is us. */ 584 strcpy(dkw->dkw_parent, ed->sc_dev.dv_xname); 585 return (dkwedge_add(dkw)); 586 } 587 588 case DIOCDWEDGE: 589 { 590 struct dkwedge_info *dkw = (void *) addr; 591 592 if ((flag & FWRITE) == 0) 593 return (EBADF); 594 595 /* If the ioctl happens here, the parent is us. */ 596 strcpy(dkw->dkw_parent, ed->sc_dev.dv_xname); 597 return (dkwedge_del(dkw)); 598 } 599 600 case DIOCLWEDGES: 601 { 602 struct dkwedge_list *dkwl = (void *) addr; 603 604 return (dkwedge_list(&ed->sc_dk, dkwl, l)); 605 } 606 607 default: 608 return ENOTTY; 609 } 610 611 #ifdef DIAGNOSTIC 612 panic("edioctl: impossible"); 613 #endif 614 } 615 616 int 617 edmcasize(dev) 618 dev_t dev; 619 { 620 struct ed_softc *wd; 621 int part, omask; 622 int size; 623 624 ATADEBUG_PRINT(("edsize\n"), DEBUG_FUNCS); 625 626 wd = device_lookup(&ed_cd, DISKUNIT(dev)); 627 if (wd == NULL) 628 return (-1); 629 630 part = DISKPART(dev); 631 omask = wd->sc_dk.dk_openmask & (1 << part); 632 633 if (omask == 0 && edmcaopen(dev, 0, S_IFBLK, NULL) != 0) 634 return (-1); 635 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 636 size = -1; 637 else 638 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 639 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 640 if (omask == 0 && edmcaclose(dev, 0, S_IFBLK, NULL) != 0) 641 return (-1); 642 return (size); 643 } 644 645 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 646 static int eddoingadump = 0; 647 static int eddumprecalibrated = 0; 648 static int eddumpmulti = 1; 649 650 /* 651 * Dump core after a system crash. 652 */ 653 int 654 edmcadump(dev, blkno, va, size) 655 dev_t dev; 656 daddr_t blkno; 657 void *va; 658 size_t size; 659 { 660 struct ed_softc *ed; /* disk unit to do the I/O */ 661 struct disklabel *lp; /* disk's disklabel */ 662 int part; 663 int nblks; /* total number of sectors left to write */ 664 int error; 665 666 /* Check if recursive dump; if so, punt. */ 667 if (eddoingadump) 668 return EFAULT; 669 eddoingadump = 1; 670 671 ed = device_lookup(&ed_cd, DISKUNIT(dev)); 672 if (ed == NULL) 673 return (ENXIO); 674 675 part = DISKPART(dev); 676 677 /* Make sure it was initialized. */ 678 if ((ed->sc_flags & EDF_INIT) == 0) 679 return ENXIO; 680 681 /* Convert to disk sectors. Request must be a multiple of size. */ 682 lp = ed->sc_dk.dk_label; 683 if ((size % lp->d_secsize) != 0) 684 return EFAULT; 685 nblks = size / lp->d_secsize; 686 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 687 688 /* Check transfer bounds against partition size. */ 689 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 690 return EINVAL; 691 692 /* Offset block number to start of partition. */ 693 blkno += lp->d_partitions[part].p_offset; 694 695 /* Recalibrate, if first dump transfer. */ 696 if (eddumprecalibrated == 0) { 697 eddumprecalibrated = 1; 698 eddumpmulti = 8; 699 #if 0 700 wd->drvp->state = RESET; 701 #endif 702 } 703 704 while (nblks > 0) { 705 error = edc_bio(ed->edc_softc, ed, va, blkno, 706 min(nblks, eddumpmulti) * lp->d_secsize, 0, 1); 707 if (error) 708 return (error); 709 710 /* update block count */ 711 nblks -= min(nblks, eddumpmulti); 712 blkno += min(nblks, eddumpmulti); 713 va = (char *)va + min(nblks, eddumpmulti) * lp->d_secsize; 714 } 715 716 eddoingadump = 0; 717 return (0); 718 } 719 720 static int 721 ed_get_params(ed, drv_flags) 722 struct ed_softc *ed; 723 int *drv_flags; 724 { 725 u_int16_t cmd_args[2]; 726 727 /* 728 * Get Device Configuration (09). 729 */ 730 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 731 cmd_args[1] = 0; 732 if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno, 733 cmd_args, 2, 1)) 734 return (1); 735 736 ed->spares = ed->sense_data[1] >> 8; 737 if (drv_flags) 738 *drv_flags = ed->sense_data[1] & 0x1f; 739 ed->rba = ed->sense_data[2] | (ed->sense_data[3] << 16); 740 /* Instead of using: 741 ed->cyl = ed->sense_data[4]; 742 ed->heads = ed->sense_data[5] & 0xff; 743 ed->sectors = ed->sense_data[5] >> 8; 744 * we fabricate the numbers from RBA count, so that 745 * number of sectors is 32 and heads 64. This seems 746 * to be necessary for integrated ESDI controller. 747 */ 748 ed->sectors = 32; 749 ed->heads = 64; 750 ed->cyl = ed->rba / (ed->heads * ed->sectors); 751 ed->sc_capacity = ed->rba; 752 753 return (0); 754 } 755
Indexes created Mon Oct 13 01:09:56 GMT 2025