ed_mca.c revision 1.36
1 /* $NetBSD: ed_mca.c,v 1.36 2007/07/21 19:51:48 ad 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 1.36 2007/07/21 19:51:48 ad 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 bad; 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 bad; 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 bad: 266 bp->b_flags |= B_ERROR; 267 done: 268 /* Toss transfer; we're done early. */ 269 bp->b_resid = bp->b_bcount; 270 biodone(bp); 271 } 272 273 int 274 edmcaread(dev_t dev, struct uio *uio, int flags) 275 { 276 ATADEBUG_PRINT(("edread\n"), DEBUG_XFERS); 277 return (physio(edmcastrategy, NULL, dev, B_READ, minphys, uio)); 278 } 279 280 int 281 edmcawrite(dev_t dev, struct uio *uio, int flags) 282 { 283 ATADEBUG_PRINT(("edwrite\n"), DEBUG_XFERS); 284 return (physio(edmcastrategy, NULL, dev, B_WRITE, minphys, uio)); 285 } 286 287 int 288 edmcaopen(dev_t dev, int flag, int fmt, struct lwp *l) 289 { 290 struct ed_softc *wd; 291 int part, error; 292 293 ATADEBUG_PRINT(("edopen\n"), DEBUG_FUNCS); 294 wd = device_lookup(&ed_cd, DISKUNIT(dev)); 295 if (wd == NULL || (wd->sc_flags & EDF_INIT) == 0) 296 return (ENXIO); 297 298 part = DISKPART(dev); 299 300 mutex_enter(&wd->sc_dk.dk_openlock); 301 302 /* 303 * If there are wedges, and this is not RAW_PART, then we 304 * need to fail. 305 */ 306 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 307 error = EBUSY; 308 goto bad1; 309 } 310 311 if (wd->sc_dk.dk_openmask != 0) { 312 /* 313 * If any partition is open, but the disk has been invalidated, 314 * disallow further opens. 315 */ 316 if ((wd->sc_flags & WDF_LOADED) == 0) { 317 error = EIO; 318 goto bad1; 319 } 320 } else { 321 if ((wd->sc_flags & WDF_LOADED) == 0) { 322 int s; 323 324 wd->sc_flags |= WDF_LOADED; 325 326 /* Load the physical device parameters. */ 327 s = splbio(); 328 ed_get_params(wd, NULL); 329 splx(s); 330 331 /* Load the partition info if not already loaded. */ 332 edgetdisklabel(dev, wd); 333 } 334 } 335 336 /* Check that the partition exists. */ 337 if (part != RAW_PART && 338 (part >= wd->sc_dk.dk_label->d_npartitions || 339 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 340 error = ENXIO; 341 goto bad1; 342 } 343 344 /* Insure only one open at a time. */ 345 switch (fmt) { 346 case S_IFCHR: 347 wd->sc_dk.dk_copenmask |= (1 << part); 348 break; 349 case S_IFBLK: 350 wd->sc_dk.dk_bopenmask |= (1 << part); 351 break; 352 } 353 wd->sc_dk.dk_openmask = 354 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 355 356 error = 0; 357 bad1: 358 mutex_exit(&wd->sc_dk.dk_openlock); 359 return (error); 360 } 361 362 int 363 edmcaclose(dev_t dev, int flag, int fmt, struct lwp *l) 364 { 365 struct ed_softc *wd = device_lookup(&ed_cd, DISKUNIT(dev)); 366 int part = DISKPART(dev); 367 368 ATADEBUG_PRINT(("edmcaclose\n"), DEBUG_FUNCS); 369 370 mutex_enter(&wd->sc_dk.dk_openlock); 371 372 switch (fmt) { 373 case S_IFCHR: 374 wd->sc_dk.dk_copenmask &= ~(1 << part); 375 break; 376 case S_IFBLK: 377 wd->sc_dk.dk_bopenmask &= ~(1 << part); 378 break; 379 } 380 wd->sc_dk.dk_openmask = 381 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 382 383 if (wd->sc_dk.dk_openmask == 0) { 384 #if 0 385 wd_flushcache(wd, AT_WAIT); 386 #endif 387 /* XXXX Must wait for I/O to complete! */ 388 389 if (! (wd->sc_flags & WDF_KLABEL)) 390 wd->sc_flags &= ~WDF_LOADED; 391 } 392 393 mutex_exit(&wd->sc_dk.dk_openlock); 394 395 return 0; 396 } 397 398 static void 399 edgetdefaultlabel(ed, lp) 400 struct ed_softc *ed; 401 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, ed) 437 dev_t dev; 438 struct ed_softc *ed; 439 { 440 struct disklabel *lp = ed->sc_dk.dk_label; 441 const char *errstring; 442 443 ATADEBUG_PRINT(("edgetdisklabel\n"), DEBUG_FUNCS); 444 445 memset(ed->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 446 447 edgetdefaultlabel(ed, lp); 448 449 errstring = readdisklabel( 450 EDLABELDEV(dev), edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 451 if (errstring) { 452 /* 453 * This probably happened because the drive's default 454 * geometry doesn't match the DOS geometry. We 455 * assume the DOS geometry is now in the label and try 456 * again. XXX This is a kluge. 457 */ 458 #if 0 459 if (wd->drvp->state > RECAL) 460 wd->drvp->drive_flags |= DRIVE_RESET; 461 #endif 462 errstring = readdisklabel(EDLABELDEV(dev), 463 edmcastrategy, lp, ed->sc_dk.dk_cpulabel); 464 } 465 if (errstring) { 466 printf("%s: %s\n", ed->sc_dev.dv_xname, errstring); 467 return; 468 } 469 } 470 471 int 472 edmcaioctl(dev, xfer, addr, flag, l) 473 dev_t dev; 474 u_long xfer; 475 void *addr; 476 int flag; 477 struct lwp *l; 478 { 479 struct ed_softc *ed = device_lookup(&ed_cd, DISKUNIT(dev)); 480 int error; 481 482 ATADEBUG_PRINT(("edioctl\n"), DEBUG_FUNCS); 483 484 if ((ed->sc_flags & WDF_LOADED) == 0) 485 return EIO; 486 487 switch (xfer) { 488 case DIOCGDINFO: 489 *(struct disklabel *)addr = *(ed->sc_dk.dk_label); 490 return 0; 491 492 case DIOCGPART: 493 ((struct partinfo *)addr)->disklab = ed->sc_dk.dk_label; 494 ((struct partinfo *)addr)->part = 495 &ed->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 496 return 0; 497 498 case DIOCWDINFO: 499 case DIOCSDINFO: 500 { 501 struct disklabel *lp; 502 503 lp = (struct disklabel *)addr; 504 505 if ((flag & FWRITE) == 0) 506 return EBADF; 507 508 mutex_enter(&ed->sc_dk.dk_openlock); 509 ed->sc_flags |= WDF_LABELLING; 510 511 error = setdisklabel(ed->sc_dk.dk_label, 512 lp, /*wd->sc_dk.dk_openmask : */0, 513 ed->sc_dk.dk_cpulabel); 514 if (error == 0) { 515 #if 0 516 if (wd->drvp->state > RECAL) 517 wd->drvp->drive_flags |= DRIVE_RESET; 518 #endif 519 if (xfer == DIOCWDINFO) 520 error = writedisklabel(EDLABELDEV(dev), 521 edmcastrategy, ed->sc_dk.dk_label, 522 ed->sc_dk.dk_cpulabel); 523 } 524 525 ed->sc_flags &= ~WDF_LABELLING; 526 mutex_exit(&ed->sc_dk.dk_openlock); 527 return (error); 528 } 529 530 case DIOCKLABEL: 531 if (*(int *)addr) 532 ed->sc_flags |= WDF_KLABEL; 533 else 534 ed->sc_flags &= ~WDF_KLABEL; 535 return 0; 536 537 case DIOCWLABEL: 538 if ((flag & FWRITE) == 0) 539 return EBADF; 540 if (*(int *)addr) 541 ed->sc_flags |= WDF_WLABEL; 542 else 543 ed->sc_flags &= ~WDF_WLABEL; 544 return 0; 545 546 case DIOCGDEFLABEL: 547 edgetdefaultlabel(ed, (struct disklabel *)addr); 548 return 0; 549 550 #if 0 551 case DIOCWFORMAT: 552 if ((flag & FWRITE) == 0) 553 return EBADF; 554 { 555 register struct format_op *fop; 556 struct iovec aiov; 557 struct uio auio; 558 559 fop = (struct format_op *)addr; 560 aiov.iov_base = fop->df_buf; 561 aiov.iov_len = fop->df_count; 562 auio.uio_iov = &aiov; 563 auio.uio_iovcnt = 1; 564 auio.uio_resid = fop->df_count; 565 auio.uio_segflg = 0; 566 auio.uio_offset = 567 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 568 auio.uio_lwp = l; 569 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 570 &auio); 571 fop->df_count -= auio.uio_resid; 572 fop->df_reg[0] = wdc->sc_status; 573 fop->df_reg[1] = wdc->sc_error; 574 return error; 575 } 576 #endif 577 578 case DIOCAWEDGE: 579 { 580 struct dkwedge_info *dkw = (void *) addr; 581 582 if ((flag & FWRITE) == 0) 583 return (EBADF); 584 585 /* If the ioctl happens here, the parent is us. */ 586 strcpy(dkw->dkw_parent, ed->sc_dev.dv_xname); 587 return (dkwedge_add(dkw)); 588 } 589 590 case DIOCDWEDGE: 591 { 592 struct dkwedge_info *dkw = (void *) addr; 593 594 if ((flag & FWRITE) == 0) 595 return (EBADF); 596 597 /* If the ioctl happens here, the parent is us. */ 598 strcpy(dkw->dkw_parent, ed->sc_dev.dv_xname); 599 return (dkwedge_del(dkw)); 600 } 601 602 case DIOCLWEDGES: 603 { 604 struct dkwedge_list *dkwl = (void *) addr; 605 606 return (dkwedge_list(&ed->sc_dk, dkwl, l)); 607 } 608 609 default: 610 return ENOTTY; 611 } 612 613 #ifdef DIAGNOSTIC 614 panic("edioctl: impossible"); 615 #endif 616 } 617 618 int 619 edmcasize(dev) 620 dev_t dev; 621 { 622 struct ed_softc *wd; 623 int part, omask; 624 int size; 625 626 ATADEBUG_PRINT(("edsize\n"), DEBUG_FUNCS); 627 628 wd = device_lookup(&ed_cd, DISKUNIT(dev)); 629 if (wd == NULL) 630 return (-1); 631 632 part = DISKPART(dev); 633 omask = wd->sc_dk.dk_openmask & (1 << part); 634 635 if (omask == 0 && edmcaopen(dev, 0, S_IFBLK, NULL) != 0) 636 return (-1); 637 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 638 size = -1; 639 else 640 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 641 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 642 if (omask == 0 && edmcaclose(dev, 0, S_IFBLK, NULL) != 0) 643 return (-1); 644 return (size); 645 } 646 647 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 648 static int eddoingadump = 0; 649 static int eddumprecalibrated = 0; 650 static int eddumpmulti = 1; 651 652 /* 653 * Dump core after a system crash. 654 */ 655 int 656 edmcadump(dev, blkno, va, size) 657 dev_t dev; 658 daddr_t blkno; 659 void *va; 660 size_t size; 661 { 662 struct ed_softc *ed; /* disk unit to do the I/O */ 663 struct disklabel *lp; /* disk's disklabel */ 664 int part; 665 int nblks; /* total number of sectors left to write */ 666 int error; 667 668 /* Check if recursive dump; if so, punt. */ 669 if (eddoingadump) 670 return EFAULT; 671 eddoingadump = 1; 672 673 ed = device_lookup(&ed_cd, DISKUNIT(dev)); 674 if (ed == NULL) 675 return (ENXIO); 676 677 part = DISKPART(dev); 678 679 /* Make sure it was initialized. */ 680 if ((ed->sc_flags & EDF_INIT) == 0) 681 return ENXIO; 682 683 /* Convert to disk sectors. Request must be a multiple of size. */ 684 lp = ed->sc_dk.dk_label; 685 if ((size % lp->d_secsize) != 0) 686 return EFAULT; 687 nblks = size / lp->d_secsize; 688 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 689 690 /* Check transfer bounds against partition size. */ 691 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 692 return EINVAL; 693 694 /* Offset block number to start of partition. */ 695 blkno += lp->d_partitions[part].p_offset; 696 697 /* Recalibrate, if first dump transfer. */ 698 if (eddumprecalibrated == 0) { 699 eddumprecalibrated = 1; 700 eddumpmulti = 8; 701 #if 0 702 wd->drvp->state = RESET; 703 #endif 704 } 705 706 while (nblks > 0) { 707 error = edc_bio(ed->edc_softc, ed, va, blkno, 708 min(nblks, eddumpmulti) * lp->d_secsize, 0, 1); 709 if (error) 710 return (error); 711 712 /* update block count */ 713 nblks -= min(nblks, eddumpmulti); 714 blkno += min(nblks, eddumpmulti); 715 va = (char *)va + min(nblks, eddumpmulti) * lp->d_secsize; 716 } 717 718 eddoingadump = 0; 719 return (0); 720 } 721 722 static int 723 ed_get_params(ed, drv_flags) 724 struct ed_softc *ed; 725 int *drv_flags; 726 { 727 u_int16_t cmd_args[2]; 728 729 /* 730 * Get Device Configuration (09). 731 */ 732 cmd_args[0] = 14; /* Options: 00s110, s: 0=Physical 1=Pseudo */ 733 cmd_args[1] = 0; 734 if (edc_run_cmd(ed->edc_softc, CMD_GET_DEV_CONF, ed->sc_devno, 735 cmd_args, 2, 1)) 736 return (1); 737 738 ed->spares = ed->sense_data[1] >> 8; 739 if (drv_flags) 740 *drv_flags = ed->sense_data[1] & 0x1f; 741 ed->rba = ed->sense_data[2] | (ed->sense_data[3] << 16); 742 /* Instead of using: 743 ed->cyl = ed->sense_data[4]; 744 ed->heads = ed->sense_data[5] & 0xff; 745 ed->sectors = ed->sense_data[5] >> 8; 746 * we fabricate the numbers from RBA count, so that 747 * number of sectors is 32 and heads 64. This seems 748 * to be necessary for integrated ESDI controller. 749 */ 750 ed->sectors = 32; 751 ed->heads = 64; 752 ed->cyl = ed->rba / (ed->heads * ed->sectors); 753 ed->sc_capacity = ed->rba; 754 755 return (0); 756 } 757
Indexes created Mon Oct 13 01:09:56 GMT 2025