rd.c revision 1.90
1 /* $NetBSD: rd.c,v 1.90 2011/02/08 20:20:13 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * Copyright (c) 1988 University of Utah. 34 * Copyright (c) 1982, 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * the Systems Programming Group of the University of Utah Computer 39 * Science Department. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 66 * 67 * @(#)rd.c 8.2 (Berkeley) 5/19/94 68 */ 69 70 /* 71 * CS80/SS80 disk driver 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: rd.c,v 1.90 2011/02/08 20:20:13 rmind Exp $"); 76 77 #include "opt_useleds.h" 78 #include "rnd.h" 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/conf.h> 85 #include <sys/device.h> 86 #include <sys/disk.h> 87 #include <sys/disklabel.h> 88 #include <sys/fcntl.h> 89 #include <sys/ioctl.h> 90 #include <sys/proc.h> 91 #include <sys/stat.h> 92 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <hp300/dev/hpibvar.h> 98 99 #include <hp300/dev/rdreg.h> 100 #include <hp300/dev/rdvar.h> 101 102 #ifdef USELEDS 103 #include <hp300/hp300/leds.h> 104 #endif 105 106 #include "ioconf.h" 107 108 int rderrthresh = RDRETRY-1; /* when to start reporting errors */ 109 110 #ifdef DEBUG 111 /* error message tables */ 112 static const char *err_reject[] = { 113 0, 0, 114 "channel parity error", /* 0x2000 */ 115 0, 0, 116 "illegal opcode", /* 0x0400 */ 117 "module addressing", /* 0x0200 */ 118 "address bounds", /* 0x0100 */ 119 "parameter bounds", /* 0x0080 */ 120 "illegal parameter", /* 0x0040 */ 121 "message sequence", /* 0x0020 */ 122 0, 123 "message length", /* 0x0008 */ 124 0, 0, 0 125 }; 126 127 static const char *err_fault[] = { 128 0, 129 "cross unit", /* 0x4000 */ 130 0, 131 "controller fault", /* 0x1000 */ 132 0, 0, 133 "unit fault", /* 0x0200 */ 134 0, 135 "diagnostic result", /* 0x0080 */ 136 0, 137 "operator release request", /* 0x0020 */ 138 "diagnostic release request", /* 0x0010 */ 139 "internal maintenance release request", /* 0x0008 */ 140 0, 141 "power fail", /* 0x0002 */ 142 "retransmit" /* 0x0001 */ 143 }; 144 145 static const char *err_access[] = { 146 "illegal parallel operation", /* 0x8000 */ 147 "uninitialized media", /* 0x4000 */ 148 "no spares available", /* 0x2000 */ 149 "not ready", /* 0x1000 */ 150 "write protect", /* 0x0800 */ 151 "no data found", /* 0x0400 */ 152 0, 0, 153 "unrecoverable data overflow", /* 0x0080 */ 154 "unrecoverable data", /* 0x0040 */ 155 0, 156 "end of file", /* 0x0010 */ 157 "end of volume", /* 0x0008 */ 158 0, 0, 0 159 }; 160 161 static const char *err_info[] = { 162 "operator release request", /* 0x8000 */ 163 "diagnostic release request", /* 0x4000 */ 164 "internal maintenance release request", /* 0x2000 */ 165 "media wear", /* 0x1000 */ 166 "latency induced", /* 0x0800 */ 167 0, 0, 168 "auto sparing invoked", /* 0x0100 */ 169 0, 170 "recoverable data overflow", /* 0x0040 */ 171 "marginal data", /* 0x0020 */ 172 "recoverable data", /* 0x0010 */ 173 0, 174 "maintenance track overflow", /* 0x0004 */ 175 0, 0 176 }; 177 178 int rddebug = 0x80; 179 #define RDB_FOLLOW 0x01 180 #define RDB_STATUS 0x02 181 #define RDB_IDENT 0x04 182 #define RDB_IO 0x08 183 #define RDB_ASYNC 0x10 184 #define RDB_ERROR 0x80 185 #endif 186 187 /* 188 * Misc. HW description, indexed by sc_type. 189 * Nothing really critical here, could do without it. 190 */ 191 static const struct rdidentinfo rdidentinfo[] = { 192 { RD7946AID, 0, "7945A", NRD7945ABPT, 193 NRD7945ATRK, 968, 108416 }, 194 195 { RD9134DID, 1, "9134D", NRD9134DBPT, 196 NRD9134DTRK, 303, 29088 }, 197 198 { RD9134LID, 1, "9122S", NRD9122SBPT, 199 NRD9122STRK, 77, 1232 }, 200 201 { RD7912PID, 0, "7912P", NRD7912PBPT, 202 NRD7912PTRK, 572, 128128 }, 203 204 { RD7914PID, 0, "7914P", NRD7914PBPT, 205 NRD7914PTRK, 1152, 258048 }, 206 207 { RD7958AID, 0, "7958A", NRD7958ABPT, 208 NRD7958ATRK, 1013, 255276 }, 209 210 { RD7957AID, 0, "7957A", NRD7957ABPT, 211 NRD7957ATRK, 1036, 159544 }, 212 213 { RD7933HID, 0, "7933H", NRD7933HBPT, 214 NRD7933HTRK, 1321, 789958 }, 215 216 { RD9134LID, 1, "9134L", NRD9134LBPT, 217 NRD9134LTRK, 973, 77840 }, 218 219 { RD7936HID, 0, "7936H", NRD7936HBPT, 220 NRD7936HTRK, 698, 600978 }, 221 222 { RD7937HID, 0, "7937H", NRD7937HBPT, 223 NRD7937HTRK, 698, 1116102 }, 224 225 { RD7914CTID, 0, "7914CT", NRD7914PBPT, 226 NRD7914PTRK, 1152, 258048 }, 227 228 { RD7946AID, 0, "7946A", NRD7945ABPT, 229 NRD7945ATRK, 968, 108416 }, 230 231 { RD9134LID, 1, "9122D", NRD9122SBPT, 232 NRD9122STRK, 77, 1232 }, 233 234 { RD7957BID, 0, "7957B", NRD7957BBPT, 235 NRD7957BTRK, 1269, 159894 }, 236 237 { RD7958BID, 0, "7958B", NRD7958BBPT, 238 NRD7958BTRK, 786, 297108 }, 239 240 { RD7959BID, 0, "7959B", NRD7959BBPT, 241 NRD7959BTRK, 1572, 594216 }, 242 243 { RD2200AID, 0, "2200A", NRD2200ABPT, 244 NRD2200ATRK, 1449, 654948 }, 245 246 { RD2203AID, 0, "2203A", NRD2203ABPT, 247 NRD2203ATRK, 1449, 1309896 } 248 }; 249 static const int numrdidentinfo = __arraycount(rdidentinfo); 250 251 static int rdident(struct device *, struct rd_softc *, 252 struct hpibbus_attach_args *); 253 static void rdreset(struct rd_softc *); 254 static void rdustart(struct rd_softc *); 255 static int rdgetinfo(dev_t); 256 static void rdrestart(void *); 257 static struct buf *rdfinish(struct rd_softc *, struct buf *); 258 259 static void rdgetdefaultlabel(struct rd_softc *, struct disklabel *); 260 static void rdrestart(void *); 261 static void rdustart(struct rd_softc *); 262 static struct buf *rdfinish(struct rd_softc *, struct buf *); 263 static void rdstart(void *); 264 static void rdgo(void *); 265 static void rdintr(void *); 266 static int rdstatus(struct rd_softc *); 267 static int rderror(int); 268 #ifdef DEBUG 269 static void rdprinterr(const char *, short, const char **); 270 #endif 271 272 static int rdmatch(device_t, cfdata_t, void *); 273 static void rdattach(device_t, device_t, void *); 274 275 CFATTACH_DECL_NEW(rd, sizeof(struct rd_softc), 276 rdmatch, rdattach, NULL, NULL); 277 278 static dev_type_open(rdopen); 279 static dev_type_close(rdclose); 280 static dev_type_read(rdread); 281 static dev_type_write(rdwrite); 282 static dev_type_ioctl(rdioctl); 283 static dev_type_strategy(rdstrategy); 284 static dev_type_dump(rddump); 285 static dev_type_size(rdsize); 286 287 const struct bdevsw rd_bdevsw = { 288 rdopen, rdclose, rdstrategy, rdioctl, rddump, rdsize, D_DISK 289 }; 290 291 const struct cdevsw rd_cdevsw = { 292 rdopen, rdclose, rdread, rdwrite, rdioctl, 293 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 294 }; 295 296 static int 297 rdmatch(device_t parent, cfdata_t cf, void *aux) 298 { 299 struct hpibbus_attach_args *ha = aux; 300 301 /* 302 * Set punit if operator specified one in the kernel 303 * configuration file. 304 */ 305 if (cf->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 306 cf->hpibbuscf_punit < HPIB_NPUNITS) 307 ha->ha_punit = cf->hpibbuscf_punit; 308 309 if (rdident(parent, NULL, ha) == 0) { 310 /* 311 * XXX Some aging HP-IB drives are slow to 312 * XXX respond; give them a chance to catch 313 * XXX up and probe them again. 314 */ 315 delay(10000); 316 ha->ha_id = hpibid(device_unit(parent), ha->ha_slave); 317 return rdident(parent, NULL, ha); 318 } 319 return 1; 320 } 321 322 static void 323 rdattach(device_t parent, device_t self, void *aux) 324 { 325 struct rd_softc *sc = device_private(self); 326 struct hpibbus_attach_args *ha = aux; 327 328 sc->sc_dev = self; 329 bufq_alloc(&sc->sc_tab, "disksort", BUFQ_SORT_RAWBLOCK); 330 331 if (rdident(parent, sc, ha) == 0) { 332 aprint_error(": didn't respond to describe command!\n"); 333 return; 334 } 335 336 /* 337 * Initialize and attach the disk structure. 338 */ 339 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 340 disk_init(&sc->sc_dkdev, device_xname(sc->sc_dev), NULL); 341 disk_attach(&sc->sc_dkdev); 342 343 sc->sc_slave = ha->ha_slave; 344 sc->sc_punit = ha->ha_punit; 345 346 callout_init(&sc->sc_restart_ch, 0); 347 348 /* Initialize the hpib job queue entry */ 349 sc->sc_hq.hq_softc = sc; 350 sc->sc_hq.hq_slave = sc->sc_slave; 351 sc->sc_hq.hq_start = rdstart; 352 sc->sc_hq.hq_go = rdgo; 353 sc->sc_hq.hq_intr = rdintr; 354 355 sc->sc_flags = RDF_ALIVE; 356 #ifdef DEBUG 357 /* always report errors */ 358 if (rddebug & RDB_ERROR) 359 rderrthresh = 0; 360 #endif 361 #if NRND > 0 362 /* 363 * attach the device into the random source list 364 */ 365 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 366 RND_TYPE_DISK, 0); 367 #endif 368 } 369 370 static int 371 rdident(device_t parent, struct rd_softc *sc, struct hpibbus_attach_args *ha) 372 { 373 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 374 u_char stat, cmd[3]; 375 char name[7]; 376 int i, id, n, ctlr, slave; 377 378 ctlr = device_unit(parent); 379 slave = ha->ha_slave; 380 381 /* Verify that we have a CS80 device. */ 382 if ((ha->ha_id & 0x200) == 0) 383 return 0; 384 385 /* Is it one of the disks we support? */ 386 for (id = 0; id < numrdidentinfo; id++) 387 if (ha->ha_id == rdidentinfo[id].ri_hwid) 388 break; 389 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 390 return 0; 391 392 /* 393 * If we're just probing for the device, that's all the 394 * work we need to do. 395 */ 396 if (sc == NULL) 397 return 1; 398 399 /* 400 * Reset device and collect description 401 */ 402 rdreset(sc); 403 cmd[0] = C_SUNIT(ha->ha_punit); 404 cmd[1] = C_SVOL(0); 405 cmd[2] = C_DESC; 406 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 407 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 408 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 409 memset(name, 0, sizeof(name)); 410 if (stat == 0) { 411 n = desc->d_name; 412 for (i = 5; i >= 0; i--) { 413 name[i] = (n & 0xf) + '0'; 414 n >>= 4; 415 } 416 } 417 418 #ifdef DEBUG 419 if (rddebug & RDB_IDENT) { 420 aprint_debug("\n"); 421 aprint_debug_dev(sc->sc_dev, "name: %x ('%s')\n", 422 desc->d_name, name); 423 aprint_debug(" iuw %x, maxxfr %d, ctype %d\n", 424 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 425 aprint_debug(" utype %d, bps %d, blkbuf %d, burst %d," 426 " blktime %d\n", 427 desc->d_utype, desc->d_sectsize, 428 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 429 aprint_debug(" avxfr %d, ort %d, atp %d, maxint %d, fv %x" 430 ", rv %x\n", 431 desc->d_uavexfr, desc->d_retry, desc->d_access, 432 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 433 aprint_debug(" maxcyl/head/sect %d/%d/%d, maxvsect %d," 434 " inter %d\n", 435 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 436 desc->d_maxvsectl, desc->d_interleave); 437 aprint_normal("%s", device_xname(sc->sc_dev)); 438 } 439 #endif 440 441 /* 442 * Take care of a couple of anomolies: 443 * 1. 7945A and 7946A both return same HW id 444 * 2. 9122S and 9134D both return same HW id 445 * 3. 9122D and 9134L both return same HW id 446 */ 447 switch (ha->ha_id) { 448 case RD7946AID: 449 if (memcmp(name, "079450", 6) == 0) 450 id = RD7945A; 451 else 452 id = RD7946A; 453 break; 454 455 case RD9134LID: 456 if (memcmp(name, "091340", 6) == 0) 457 id = RD9134L; 458 else 459 id = RD9122D; 460 break; 461 462 case RD9134DID: 463 if (memcmp(name, "091220", 6) == 0) 464 id = RD9122S; 465 else 466 id = RD9134D; 467 break; 468 } 469 470 sc->sc_type = id; 471 472 /* 473 * XXX We use DEV_BSIZE instead of the sector size value pulled 474 * XXX off the driver because all of this code assumes 512 byte 475 * XXX blocks. ICK! 476 */ 477 aprint_normal(": %s\n", rdidentinfo[id].ri_desc); 478 aprint_normal_dev(sc->sc_dev, "%d cylinders, %d heads, %d blocks," 479 " %d bytes/block\n", 480 rdidentinfo[id].ri_ncyl, 481 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 482 DEV_BSIZE); 483 484 return 1; 485 } 486 487 static void 488 rdreset(struct rd_softc *sc) 489 { 490 int ctlr = device_unit(device_parent(sc->sc_dev)); 491 int slave = sc->sc_slave; 492 u_char stat; 493 494 sc->sc_clear.c_unit = C_SUNIT(sc->sc_punit); 495 sc->sc_clear.c_cmd = C_CLEAR; 496 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 497 hpibswait(ctlr, slave); 498 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 499 500 sc->sc_src.c_unit = C_SUNIT(RDCTLR); 501 sc->sc_src.c_nop = C_NOP; 502 sc->sc_src.c_cmd = C_SREL; 503 sc->sc_src.c_param = C_REL; 504 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 505 hpibswait(ctlr, slave); 506 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 507 508 sc->sc_ssmc.c_unit = C_SUNIT(sc->sc_punit); 509 sc->sc_ssmc.c_cmd = C_SSM; 510 sc->sc_ssmc.c_refm = REF_MASK; 511 sc->sc_ssmc.c_fefm = FEF_MASK; 512 sc->sc_ssmc.c_aefm = AEF_MASK; 513 sc->sc_ssmc.c_iefm = IEF_MASK; 514 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 515 hpibswait(ctlr, slave); 516 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 517 #ifdef DEBUG 518 sc->sc_stats.rdresets++; 519 #endif 520 } 521 522 /* 523 * Read or construct a disklabel 524 */ 525 static int 526 rdgetinfo(dev_t dev) 527 { 528 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 529 struct disklabel *lp = sc->sc_dkdev.dk_label; 530 struct partition *pi; 531 const char *msg; 532 533 /* 534 * Set some default values to use while reading the label 535 * or to use if there isn't a label. 536 */ 537 memset((void *)lp, 0, sizeof *lp); 538 rdgetdefaultlabel(sc, lp); 539 540 /* 541 * Now try to read the disklabel 542 */ 543 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 544 if (msg == NULL) 545 return 0; 546 547 pi = lp->d_partitions; 548 printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg); 549 550 pi[2].p_size = rdidentinfo[sc->sc_type].ri_nblocks; 551 /* XXX reset other info since readdisklabel screws with it */ 552 lp->d_npartitions = 3; 553 pi[0].p_size = 0; 554 555 return 0; 556 } 557 558 static int 559 rdopen(dev_t dev, int flags, int mode, struct lwp *l) 560 { 561 struct rd_softc *sc; 562 int error, mask, part; 563 564 sc = device_lookup_private(&rd_cd, rdunit(dev)); 565 if (sc == NULL) 566 return ENXIO; 567 568 if ((sc->sc_flags & RDF_ALIVE) == 0) 569 return ENXIO; 570 571 /* 572 * Wait for any pending opens/closes to complete 573 */ 574 while (sc->sc_flags & (RDF_OPENING|RDF_CLOSING)) 575 (void) tsleep(sc, PRIBIO, "rdopen", 0); 576 577 /* 578 * On first open, get label and partition info. 579 * We may block reading the label, so be careful 580 * to stop any other opens. 581 */ 582 if (sc->sc_dkdev.dk_openmask == 0) { 583 sc->sc_flags |= RDF_OPENING; 584 error = rdgetinfo(dev); 585 sc->sc_flags &= ~RDF_OPENING; 586 wakeup((void *)sc); 587 if (error) 588 return error; 589 } 590 591 part = rdpart(dev); 592 mask = 1 << part; 593 594 /* Check that the partition exists. */ 595 if (part != RAW_PART && 596 (part > sc->sc_dkdev.dk_label->d_npartitions || 597 sc->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 598 return ENXIO; 599 600 /* Ensure only one open at a time. */ 601 switch (mode) { 602 case S_IFCHR: 603 sc->sc_dkdev.dk_copenmask |= mask; 604 break; 605 case S_IFBLK: 606 sc->sc_dkdev.dk_bopenmask |= mask; 607 break; 608 } 609 sc->sc_dkdev.dk_openmask = 610 sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask; 611 612 return 0; 613 } 614 615 static int 616 rdclose(dev_t dev, int flag, int mode, struct lwp *l) 617 { 618 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 619 struct disk *dk = &sc->sc_dkdev; 620 int mask, s; 621 622 mask = 1 << rdpart(dev); 623 if (mode == S_IFCHR) 624 dk->dk_copenmask &= ~mask; 625 else 626 dk->dk_bopenmask &= ~mask; 627 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 628 /* 629 * On last close, we wait for all activity to cease since 630 * the label/parition info will become invalid. Since we 631 * might sleep, we must block any opens while we are here. 632 * Note we don't have to about other closes since we know 633 * we are the last one. 634 */ 635 if (dk->dk_openmask == 0) { 636 sc->sc_flags |= RDF_CLOSING; 637 s = splbio(); 638 while (sc->sc_active) { 639 sc->sc_flags |= RDF_WANTED; 640 (void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0); 641 } 642 splx(s); 643 sc->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 644 wakeup((void *)sc); 645 } 646 return 0; 647 } 648 649 static void 650 rdstrategy(struct buf *bp) 651 { 652 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(bp->b_dev)); 653 struct partition *pinfo; 654 daddr_t bn; 655 int sz, s; 656 int offset; 657 658 #ifdef DEBUG 659 if (rddebug & RDB_FOLLOW) 660 printf("rdstrategy(%p): dev %x, bn %llx, bcount %x, %c\n", 661 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 662 (bp->b_flags & B_READ) ? 'R' : 'W'); 663 #endif 664 bn = bp->b_blkno; 665 sz = howmany(bp->b_bcount, DEV_BSIZE); 666 pinfo = &sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 667 668 /* Don't perform partition translation on RAW_PART. */ 669 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 670 671 if (rdpart(bp->b_dev) != RAW_PART) { 672 /* 673 * XXX This block of code belongs in 674 * XXX bounds_check_with_label() 675 */ 676 677 if (bn < 0 || bn + sz > pinfo->p_size) { 678 sz = pinfo->p_size - bn; 679 if (sz == 0) { 680 bp->b_resid = bp->b_bcount; 681 goto done; 682 } 683 if (sz < 0) { 684 bp->b_error = EINVAL; 685 goto done; 686 } 687 bp->b_bcount = dbtob(sz); 688 } 689 /* 690 * Check for write to write protected label 691 */ 692 if (bn + offset <= LABELSECTOR && 693 #if LABELSECTOR != 0 694 bn + offset + sz > LABELSECTOR && 695 #endif 696 !(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) { 697 bp->b_error = EROFS; 698 goto done; 699 } 700 } 701 bp->b_rawblkno = bn + offset; 702 s = splbio(); 703 bufq_put(sc->sc_tab, bp); 704 if (sc->sc_active == 0) { 705 sc->sc_active = 1; 706 rdustart(sc); 707 } 708 splx(s); 709 return; 710 done: 711 biodone(bp); 712 } 713 714 /* 715 * Called from timeout() when handling maintenance releases 716 */ 717 static void 718 rdrestart(void *arg) 719 { 720 int s = splbio(); 721 rdustart((struct rd_softc *)arg); 722 splx(s); 723 } 724 725 static void 726 rdustart(struct rd_softc *sc) 727 { 728 struct buf *bp; 729 730 bp = bufq_peek(sc->sc_tab); 731 sc->sc_addr = bp->b_data; 732 sc->sc_resid = bp->b_bcount; 733 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 734 rdstart(sc); 735 } 736 737 static struct buf * 738 rdfinish(struct rd_softc *sc, struct buf *bp) 739 { 740 741 sc->sc_errcnt = 0; 742 (void)bufq_get(sc->sc_tab); 743 bp->b_resid = 0; 744 biodone(bp); 745 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 746 if ((bp = bufq_peek(sc->sc_tab)) != NULL) 747 return bp; 748 sc->sc_active = 0; 749 if (sc->sc_flags & RDF_WANTED) { 750 sc->sc_flags &= ~RDF_WANTED; 751 wakeup((void *)&sc->sc_tab); 752 } 753 return NULL; 754 } 755 756 static void 757 rdstart(void *arg) 758 { 759 struct rd_softc *sc = arg; 760 struct buf *bp = bufq_peek(sc->sc_tab); 761 int part, ctlr, slave; 762 763 ctlr = device_unit(device_parent(sc->sc_dev)); 764 slave = sc->sc_slave; 765 766 again: 767 #ifdef DEBUG 768 if (rddebug & RDB_FOLLOW) 769 printf("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp, 770 (bp->b_flags & B_READ) ? 'R' : 'W'); 771 #endif 772 part = rdpart(bp->b_dev); 773 sc->sc_flags |= RDF_SEEK; 774 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 775 sc->sc_ioc.c_volume = C_SVOL(0); 776 sc->sc_ioc.c_saddr = C_SADDR; 777 sc->sc_ioc.c_hiaddr = 0; 778 sc->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 779 sc->sc_ioc.c_nop2 = C_NOP; 780 sc->sc_ioc.c_slen = C_SLEN; 781 sc->sc_ioc.c_len = sc->sc_resid; 782 sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 783 #ifdef DEBUG 784 if (rddebug & RDB_IO) 785 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 786 ctlr, slave, C_CMD, 787 &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc) - 2); 788 #endif 789 if (hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 790 sizeof(sc->sc_ioc) - 2) == sizeof(sc->sc_ioc) - 2) { 791 792 /* Instrumentation. */ 793 disk_busy(&sc->sc_dkdev); 794 iostat_seek(sc->sc_dkdev.dk_stats); 795 796 #ifdef DEBUG 797 if (rddebug & RDB_IO) 798 printf("rdstart: hpibawait(%x)\n", ctlr); 799 #endif 800 hpibawait(ctlr); 801 return; 802 } 803 /* 804 * Experience has shown that the hpibwait in this hpibsend will 805 * occasionally timeout. It appears to occur mostly on old 7914 806 * drives with full maintenance tracks. We should probably 807 * integrate this with the backoff code in rderror. 808 */ 809 #ifdef DEBUG 810 if (rddebug & RDB_ERROR) 811 printf("%s: rdstart: cmd %x adr %lx blk %lld len %d ecnt %d\n", 812 device_xname(sc->sc_dev), 813 sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 814 bp->b_blkno, sc->sc_resid, sc->sc_errcnt); 815 sc->sc_stats.rdretries++; 816 #endif 817 sc->sc_flags &= ~RDF_SEEK; 818 rdreset(sc); 819 if (sc->sc_errcnt++ < RDRETRY) 820 goto again; 821 printf("%s: rdstart err: cmd 0x%x sect %ld blk %" PRId64 " len %d\n", 822 device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 823 bp->b_blkno, sc->sc_resid); 824 bp->b_error = EIO; 825 bp = rdfinish(sc, bp); 826 if (bp) { 827 sc->sc_addr = bp->b_data; 828 sc->sc_resid = bp->b_bcount; 829 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 830 goto again; 831 } 832 } 833 834 static void 835 rdgo(void *arg) 836 { 837 struct rd_softc *sc = arg; 838 struct buf *bp = bufq_peek(sc->sc_tab); 839 int rw, ctlr, slave; 840 841 ctlr = device_unit(device_parent(sc->sc_dev)); 842 slave = sc->sc_slave; 843 844 rw = bp->b_flags & B_READ; 845 846 /* Instrumentation. */ 847 disk_busy(&sc->sc_dkdev); 848 849 #ifdef USELEDS 850 ledcontrol(0, 0, LED_DISK); 851 #endif 852 hpibgo(ctlr, slave, C_EXEC, sc->sc_addr, sc->sc_resid, rw, rw != 0); 853 } 854 855 /* ARGSUSED */ 856 static void 857 rdintr(void *arg) 858 { 859 struct rd_softc *sc = arg; 860 int unit = device_unit(sc->sc_dev); 861 struct buf *bp = bufq_peek(sc->sc_tab); 862 u_char stat = 13; /* in case hpibrecv fails */ 863 int rv, restart, ctlr, slave; 864 865 ctlr = device_unit(device_parent(sc->sc_dev)); 866 slave = sc->sc_slave; 867 868 #ifdef DEBUG 869 if (rddebug & RDB_FOLLOW) 870 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 871 (bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags); 872 if (bp == NULL) { 873 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 874 return; 875 } 876 #endif 877 disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid), 878 (bp->b_flags & B_READ)); 879 880 if (sc->sc_flags & RDF_SEEK) { 881 sc->sc_flags &= ~RDF_SEEK; 882 if (hpibustart(ctlr)) 883 rdgo(sc); 884 return; 885 } 886 if ((sc->sc_flags & RDF_SWAIT) == 0) { 887 #ifdef DEBUG 888 sc->sc_stats.rdpolltries++; 889 #endif 890 if (hpibpptest(ctlr, slave) == 0) { 891 #ifdef DEBUG 892 sc->sc_stats.rdpollwaits++; 893 #endif 894 895 /* Instrumentation. */ 896 disk_busy(&sc->sc_dkdev); 897 sc->sc_flags |= RDF_SWAIT; 898 hpibawait(ctlr); 899 return; 900 } 901 } else 902 sc->sc_flags &= ~RDF_SWAIT; 903 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 904 if (rv != 1 || stat) { 905 #ifdef DEBUG 906 if (rddebug & RDB_ERROR) 907 printf("rdintr: recv failed or bad stat %d\n", stat); 908 #endif 909 restart = rderror(unit); 910 #ifdef DEBUG 911 sc->sc_stats.rdretries++; 912 #endif 913 if (sc->sc_errcnt++ < RDRETRY) { 914 if (restart) 915 rdstart(sc); 916 return; 917 } 918 bp->b_error = EIO; 919 } 920 if (rdfinish(sc, bp)) 921 rdustart(sc); 922 #if NRND > 0 923 rnd_add_uint32(&sc->rnd_source, bp->b_blkno); 924 #endif 925 } 926 927 static int 928 rdstatus(struct rd_softc *sc) 929 { 930 int c, s; 931 u_char stat; 932 int rv; 933 934 c = device_unit(device_parent(sc->sc_dev)); 935 s = sc->sc_slave; 936 sc->sc_rsc.c_unit = C_SUNIT(sc->sc_punit); 937 sc->sc_rsc.c_sram = C_SRAM; 938 sc->sc_rsc.c_ram = C_RAM; 939 sc->sc_rsc.c_cmd = C_STATUS; 940 memset((void *)&sc->sc_stat, 0, sizeof(sc->sc_stat)); 941 rv = hpibsend(c, s, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 942 if (rv != sizeof(sc->sc_rsc)) { 943 #ifdef DEBUG 944 if (rddebug & RDB_STATUS) 945 printf("rdstatus: send C_CMD failed %d != %d\n", 946 rv, sizeof(sc->sc_rsc)); 947 #endif 948 return 1; 949 } 950 rv = hpibrecv(c, s, C_EXEC, &sc->sc_stat, sizeof(sc->sc_stat)); 951 if (rv != sizeof(sc->sc_stat)) { 952 #ifdef DEBUG 953 if (rddebug & RDB_STATUS) 954 printf("rdstatus: send C_EXEC failed %d != %d\n", 955 rv, sizeof(sc->sc_stat)); 956 #endif 957 return 1; 958 } 959 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 960 if (rv != 1 || stat) { 961 #ifdef DEBUG 962 if (rddebug & RDB_STATUS) 963 printf("rdstatus: recv failed %d or bad stat %d\n", 964 rv, stat); 965 #endif 966 return 1; 967 } 968 return 0; 969 } 970 971 /* 972 * Deal with errors. 973 * Returns 1 if request should be restarted, 974 * 0 if we should just quietly give up. 975 */ 976 static int 977 rderror(int unit) 978 { 979 struct rd_softc *sc = device_lookup_private(&rd_cd,unit); 980 struct rd_stat *sp; 981 struct buf *bp; 982 daddr_t hwbn, pbn; 983 char *hexstr(int, int); /* XXX */ 984 985 if (rdstatus(sc)) { 986 #ifdef DEBUG 987 printf("%s: couldn't get status\n", device_xname(sc->sc_dev)); 988 #endif 989 rdreset(sc); 990 return 1; 991 } 992 sp = &sc->sc_stat; 993 if (sp->c_fef & FEF_REXMT) 994 return 1; 995 if (sp->c_fef & FEF_PF) { 996 rdreset(sc); 997 return 1; 998 } 999 /* 1000 * Unit requests release for internal maintenance. 1001 * We just delay awhile and try again later. Use expontially 1002 * increasing backoff ala ethernet drivers since we don't really 1003 * know how long the maintenance will take. With RDWAITC and 1004 * RDRETRY as defined, the range is 1 to 32 seconds. 1005 */ 1006 if (sp->c_fef & FEF_IMR) { 1007 extern int hz; 1008 int rdtimo = RDWAITC << sc->sc_errcnt; 1009 #ifdef DEBUG 1010 printf("%s: internal maintenance, %d second timeout\n", 1011 device_xname(sc->sc_dev), rdtimo); 1012 sc->sc_stats.rdtimeouts++; 1013 #endif 1014 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 1015 callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc); 1016 return 0; 1017 } 1018 /* 1019 * Only report error if we have reached the error reporting 1020 * threshhold. By default, this will only report after the 1021 * retry limit has been exceeded. 1022 */ 1023 if (sc->sc_errcnt < rderrthresh) 1024 return 1; 1025 1026 /* 1027 * First conjure up the block number at which the error occurred. 1028 * Note that not all errors report a block number, in that case 1029 * we just use b_blkno. 1030 */ 1031 bp = bufq_peek(sc->sc_tab); 1032 pbn = sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1033 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1034 (sp->c_ief & IEF_RRMASK)) { 1035 hwbn = RDBTOS(pbn + bp->b_blkno); 1036 pbn = bp->b_blkno; 1037 } else { 1038 hwbn = sp->c_blk; 1039 pbn = RDSTOB(hwbn) - pbn; 1040 } 1041 /* 1042 * Now output a generic message suitable for badsect. 1043 * Note that we don't use harderr cuz it just prints 1044 * out b_blkno which is just the beginning block number 1045 * of the transfer, not necessary where the error occurred. 1046 */ 1047 printf("%s%c: hard error sn%" PRId64 "\n", device_xname(sc->sc_dev), 1048 'a'+rdpart(bp->b_dev), pbn); 1049 /* 1050 * Now report the status as returned by the hardware with 1051 * attempt at interpretation (unless debugging). 1052 */ 1053 printf("%s %s error:", device_xname(sc->sc_dev), 1054 (bp->b_flags & B_READ) ? "read" : "write"); 1055 #ifdef DEBUG 1056 if (rddebug & RDB_ERROR) { 1057 /* status info */ 1058 printf("\n volume: %d, unit: %d\n", 1059 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1060 rdprinterr("reject", sp->c_ref, err_reject); 1061 rdprinterr("fault", sp->c_fef, err_fault); 1062 rdprinterr("access", sp->c_aef, err_access); 1063 rdprinterr("info", sp->c_ief, err_info); 1064 printf(" block: %lld, P1-P10: ", hwbn); 1065 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1066 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1067 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1068 /* command */ 1069 printf(" ioc: "); 1070 printf("0x%x", *(u_int *)&sc->sc_ioc.c_pad); 1071 printf("0x%x", *(u_short *)&sc->sc_ioc.c_hiaddr); 1072 printf("0x%x", *(u_int *)&sc->sc_ioc.c_addr); 1073 printf("0x%x", *(u_short *)&sc->sc_ioc.c_nop2); 1074 printf("0x%x", *(u_int *)&sc->sc_ioc.c_len); 1075 printf("0x%x\n", *(u_short *)&sc->sc_ioc.c_cmd); 1076 return 1; 1077 } 1078 #endif 1079 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1080 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1081 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1082 printf("P1-P10: "); 1083 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1084 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1085 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1086 return 1; 1087 } 1088 1089 static int 1090 rdread(dev_t dev, struct uio *uio, int flags) 1091 { 1092 1093 return physio(rdstrategy, NULL, dev, B_READ, minphys, uio); 1094 } 1095 1096 static int 1097 rdwrite(dev_t dev, struct uio *uio, int flags) 1098 { 1099 1100 return physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio); 1101 } 1102 1103 static int 1104 rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1105 { 1106 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 1107 struct disklabel *lp = sc->sc_dkdev.dk_label; 1108 int error, flags; 1109 1110 switch (cmd) { 1111 case DIOCGDINFO: 1112 *(struct disklabel *)data = *lp; 1113 return 0; 1114 1115 case DIOCGPART: 1116 ((struct partinfo *)data)->disklab = lp; 1117 ((struct partinfo *)data)->part = 1118 &lp->d_partitions[rdpart(dev)]; 1119 return 0; 1120 1121 case DIOCWLABEL: 1122 if ((flag & FWRITE) == 0) 1123 return EBADF; 1124 if (*(int *)data) 1125 sc->sc_flags |= RDF_WLABEL; 1126 else 1127 sc->sc_flags &= ~RDF_WLABEL; 1128 return 0; 1129 1130 case DIOCSDINFO: 1131 if ((flag & FWRITE) == 0) 1132 return EBADF; 1133 return setdisklabel(lp, (struct disklabel *)data, 1134 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1135 NULL); 1136 1137 case DIOCWDINFO: 1138 if ((flag & FWRITE) == 0) 1139 return EBADF; 1140 error = setdisklabel(lp, (struct disklabel *)data, 1141 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1142 NULL); 1143 if (error) 1144 return error; 1145 flags = sc->sc_flags; 1146 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1147 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 1148 sc->sc_flags = flags; 1149 return error; 1150 1151 case DIOCGDEFLABEL: 1152 rdgetdefaultlabel(sc, (struct disklabel *)data); 1153 return 0; 1154 } 1155 return EINVAL; 1156 } 1157 1158 static void 1159 rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp) 1160 { 1161 int type = sc->sc_type; 1162 1163 memset((void *)lp, 0, sizeof(struct disklabel)); 1164 1165 lp->d_type = DTYPE_HPIB; 1166 lp->d_secsize = DEV_BSIZE; 1167 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1168 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1169 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1170 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1171 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1172 1173 strlcpy(lp->d_typename, rdidentinfo[type].ri_desc, 1174 sizeof(lp->d_typename)); 1175 strlcpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1176 lp->d_rpm = 3000; 1177 lp->d_interleave = 1; 1178 lp->d_flags = 0; 1179 1180 lp->d_partitions[RAW_PART].p_offset = 0; 1181 lp->d_partitions[RAW_PART].p_size = 1182 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1183 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1184 lp->d_npartitions = RAW_PART + 1; 1185 1186 lp->d_magic = DISKMAGIC; 1187 lp->d_magic2 = DISKMAGIC; 1188 lp->d_checksum = dkcksum(lp); 1189 } 1190 1191 int 1192 rdsize(dev_t dev) 1193 { 1194 struct rd_softc *sc; 1195 int psize, didopen = 0; 1196 1197 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1198 if (sc == NULL) 1199 return ENXIO; 1200 1201 if ((sc->sc_flags & RDF_ALIVE) == 0) 1202 return ENXIO; 1203 1204 /* 1205 * We get called very early on (via swapconf) 1206 * without the device being open so we may need 1207 * to handle it here. 1208 */ 1209 if (sc->sc_dkdev.dk_openmask == 0) { 1210 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1211 return -1; 1212 didopen = 1; 1213 } 1214 psize = sc->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1215 (sc->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1216 if (didopen) 1217 (void)rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1218 return psize; 1219 } 1220 1221 #ifdef DEBUG 1222 static void 1223 rdprinterr(const char *str, short err, const char **tab) 1224 { 1225 int i; 1226 int printed; 1227 1228 if (err == 0) 1229 return; 1230 printf(" %s error %d field:", str, err); 1231 printed = 0; 1232 for (i = 0; i < 16; i++) 1233 if (err & (0x8000 >> i)) 1234 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1235 printf("\n"); 1236 } 1237 #endif 1238 1239 static int rddoingadump; /* simple mutex */ 1240 1241 /* 1242 * Non-interrupt driven, non-DMA dump routine. 1243 */ 1244 static int 1245 rddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1246 { 1247 int sectorsize; /* size of a disk sector */ 1248 int nsects; /* number of sectors in partition */ 1249 int sectoff; /* sector offset of partition */ 1250 int totwrt; /* total number of sectors left to write */ 1251 int nwrt; /* current number of sectors to write */ 1252 int unit, part; 1253 int ctlr, slave; 1254 struct rd_softc *sc; 1255 struct disklabel *lp; 1256 char stat; 1257 1258 /* Check for recursive dump; if so, punt. */ 1259 if (rddoingadump) 1260 return EFAULT; 1261 rddoingadump = 1; 1262 1263 /* Decompose unit and partition. */ 1264 unit = rdunit(dev); 1265 part = rdpart(dev); 1266 1267 /* Make sure dump device is ok. */ 1268 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1269 if (sc == NULL) 1270 return ENXIO; 1271 1272 if ((sc->sc_flags & RDF_ALIVE) == 0) 1273 return ENXIO; 1274 1275 ctlr = device_unit(device_parent(sc->sc_dev)); 1276 slave = sc->sc_slave; 1277 1278 /* 1279 * Convert to disk sectors. Request must be a multiple of size. 1280 */ 1281 lp = sc->sc_dkdev.dk_label; 1282 sectorsize = lp->d_secsize; 1283 if ((size % sectorsize) != 0) 1284 return EFAULT; 1285 totwrt = size / sectorsize; 1286 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1287 1288 nsects = lp->d_partitions[part].p_size; 1289 sectoff = lp->d_partitions[part].p_offset; 1290 1291 /* Check transfer bounds against partition size. */ 1292 if ((blkno < 0) || (blkno + totwrt) > nsects) 1293 return EINVAL; 1294 1295 /* Offset block number to start of partition. */ 1296 blkno += sectoff; 1297 1298 while (totwrt > 0) { 1299 nwrt = totwrt; /* XXX */ 1300 #ifndef RD_DUMP_NOT_TRUSTED 1301 /* 1302 * Fill out and send HPIB command. 1303 */ 1304 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 1305 sc->sc_ioc.c_volume = C_SVOL(0); 1306 sc->sc_ioc.c_saddr = C_SADDR; 1307 sc->sc_ioc.c_hiaddr = 0; 1308 sc->sc_ioc.c_addr = RDBTOS(blkno); 1309 sc->sc_ioc.c_nop2 = C_NOP; 1310 sc->sc_ioc.c_slen = C_SLEN; 1311 sc->sc_ioc.c_len = nwrt * sectorsize; 1312 sc->sc_ioc.c_cmd = C_WRITE; 1313 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 1314 sizeof(sc->sc_ioc) - 2); 1315 if (hpibswait(ctlr, slave)) 1316 return EIO; 1317 1318 /* 1319 * Send the data. 1320 */ 1321 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1322 (void) hpibswait(ctlr, slave); 1323 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1324 if (stat) 1325 return EIO; 1326 #else /* RD_DUMP_NOT_TRUSTED */ 1327 /* Let's just talk about this first... */ 1328 printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev), 1329 va, blkno); 1330 delay(500 * 1000); /* half a second */ 1331 #endif /* RD_DUMP_NOT_TRUSTED */ 1332 1333 /* update block count */ 1334 totwrt -= nwrt; 1335 blkno += nwrt; 1336 va = (char *)va + sectorsize * nwrt; 1337 } 1338 rddoingadump = 0; 1339 return 0; 1340 } 1341
Indexes created Tue Sep 30 11:09:46 GMT 2025