rd.c revision 1.93
1 /* $NetBSD: rd.c,v 1.93 2012/10/13 06:12:23 tsutsui 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 1.93 2012/10/13 06:12:23 tsutsui Exp $"); 76 77 #include "opt_useleds.h" 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 #include <sys/buf.h> 82 #include <sys/bufq.h> 83 #include <sys/conf.h> 84 #include <sys/device.h> 85 #include <sys/disk.h> 86 #include <sys/disklabel.h> 87 #include <sys/fcntl.h> 88 #include <sys/ioctl.h> 89 #include <sys/proc.h> 90 #include <sys/stat.h> 91 92 #include <sys/rnd.h> 93 94 #include <hp300/dev/hpibvar.h> 95 96 #include <hp300/dev/rdreg.h> 97 #include <hp300/dev/rdvar.h> 98 99 #ifdef USELEDS 100 #include <hp300/hp300/leds.h> 101 #endif 102 103 #include "ioconf.h" 104 105 int rderrthresh = RDRETRY-1; /* when to start reporting errors */ 106 107 #ifdef DEBUG 108 /* error message tables */ 109 static const char *err_reject[] = { 110 0, 0, 111 "channel parity error", /* 0x2000 */ 112 0, 0, 113 "illegal opcode", /* 0x0400 */ 114 "module addressing", /* 0x0200 */ 115 "address bounds", /* 0x0100 */ 116 "parameter bounds", /* 0x0080 */ 117 "illegal parameter", /* 0x0040 */ 118 "message sequence", /* 0x0020 */ 119 0, 120 "message length", /* 0x0008 */ 121 0, 0, 0 122 }; 123 124 static const char *err_fault[] = { 125 0, 126 "cross unit", /* 0x4000 */ 127 0, 128 "controller fault", /* 0x1000 */ 129 0, 0, 130 "unit fault", /* 0x0200 */ 131 0, 132 "diagnostic result", /* 0x0080 */ 133 0, 134 "operator release request", /* 0x0020 */ 135 "diagnostic release request", /* 0x0010 */ 136 "internal maintenance release request", /* 0x0008 */ 137 0, 138 "power fail", /* 0x0002 */ 139 "retransmit" /* 0x0001 */ 140 }; 141 142 static const char *err_access[] = { 143 "illegal parallel operation", /* 0x8000 */ 144 "uninitialized media", /* 0x4000 */ 145 "no spares available", /* 0x2000 */ 146 "not ready", /* 0x1000 */ 147 "write protect", /* 0x0800 */ 148 "no data found", /* 0x0400 */ 149 0, 0, 150 "unrecoverable data overflow", /* 0x0080 */ 151 "unrecoverable data", /* 0x0040 */ 152 0, 153 "end of file", /* 0x0010 */ 154 "end of volume", /* 0x0008 */ 155 0, 0, 0 156 }; 157 158 static const char *err_info[] = { 159 "operator release request", /* 0x8000 */ 160 "diagnostic release request", /* 0x4000 */ 161 "internal maintenance release request", /* 0x2000 */ 162 "media wear", /* 0x1000 */ 163 "latency induced", /* 0x0800 */ 164 0, 0, 165 "auto sparing invoked", /* 0x0100 */ 166 0, 167 "recoverable data overflow", /* 0x0040 */ 168 "marginal data", /* 0x0020 */ 169 "recoverable data", /* 0x0010 */ 170 0, 171 "maintenance track overflow", /* 0x0004 */ 172 0, 0 173 }; 174 175 int rddebug = 0x80; 176 #define RDB_FOLLOW 0x01 177 #define RDB_STATUS 0x02 178 #define RDB_IDENT 0x04 179 #define RDB_IO 0x08 180 #define RDB_ASYNC 0x10 181 #define RDB_ERROR 0x80 182 #endif 183 184 /* 185 * Misc. HW description, indexed by sc_type. 186 * Nothing really critical here, could do without it. 187 */ 188 static const struct rdidentinfo rdidentinfo[] = { 189 { RD7946AID, 0, "7945A", NRD7945ABPT, 190 NRD7945ATRK, 968, 108416 }, 191 192 { RD9134DID, 1, "9134D", NRD9134DBPT, 193 NRD9134DTRK, 303, 29088 }, 194 195 { RD9134LID, 1, "9122S", NRD9122SBPT, 196 NRD9122STRK, 77, 1232 }, 197 198 { RD7912PID, 0, "7912P", NRD7912PBPT, 199 NRD7912PTRK, 572, 128128 }, 200 201 { RD7914PID, 0, "7914P", NRD7914PBPT, 202 NRD7914PTRK, 1152, 258048 }, 203 204 { RD7958AID, 0, "7958A", NRD7958ABPT, 205 NRD7958ATRK, 1013, 255276 }, 206 207 { RD7957AID, 0, "7957A", NRD7957ABPT, 208 NRD7957ATRK, 1036, 159544 }, 209 210 { RD7933HID, 0, "7933H", NRD7933HBPT, 211 NRD7933HTRK, 1321, 789958 }, 212 213 { RD9134LID, 1, "9134L", NRD9134LBPT, 214 NRD9134LTRK, 973, 77840 }, 215 216 { RD7936HID, 0, "7936H", NRD7936HBPT, 217 NRD7936HTRK, 698, 600978 }, 218 219 { RD7937HID, 0, "7937H", NRD7937HBPT, 220 NRD7937HTRK, 698, 1116102 }, 221 222 { RD7914CTID, 0, "7914CT", NRD7914PBPT, 223 NRD7914PTRK, 1152, 258048 }, 224 225 { RD7946AID, 0, "7946A", NRD7945ABPT, 226 NRD7945ATRK, 968, 108416 }, 227 228 { RD9134LID, 1, "9122D", NRD9122SBPT, 229 NRD9122STRK, 77, 1232 }, 230 231 { RD7957BID, 0, "7957B", NRD7957BBPT, 232 NRD7957BTRK, 1269, 159894 }, 233 234 { RD7958BID, 0, "7958B", NRD7958BBPT, 235 NRD7958BTRK, 786, 297108 }, 236 237 { RD7959BID, 0, "7959B", NRD7959BBPT, 238 NRD7959BTRK, 1572, 594216 }, 239 240 { RD2200AID, 0, "2200A", NRD2200ABPT, 241 NRD2200ATRK, 1449, 654948 }, 242 243 { RD2203AID, 0, "2203A", NRD2203ABPT, 244 NRD2203ATRK, 1449, 1309896 } 245 }; 246 static const int numrdidentinfo = __arraycount(rdidentinfo); 247 248 static int rdident(device_t, struct rd_softc *, 249 struct hpibbus_attach_args *); 250 static void rdreset(struct rd_softc *); 251 static void rdustart(struct rd_softc *); 252 static int rdgetinfo(dev_t); 253 static void rdrestart(void *); 254 static struct buf *rdfinish(struct rd_softc *, struct buf *); 255 256 static void rdgetdefaultlabel(struct rd_softc *, struct disklabel *); 257 static void rdrestart(void *); 258 static void rdustart(struct rd_softc *); 259 static struct buf *rdfinish(struct rd_softc *, struct buf *); 260 static void rdstart(void *); 261 static void rdgo(void *); 262 static void rdintr(void *); 263 static int rdstatus(struct rd_softc *); 264 static int rderror(int); 265 #ifdef DEBUG 266 static void rdprinterr(const char *, short, const char **); 267 #endif 268 269 static int rdmatch(device_t, cfdata_t, void *); 270 static void rdattach(device_t, device_t, void *); 271 272 CFATTACH_DECL_NEW(rd, sizeof(struct rd_softc), 273 rdmatch, rdattach, NULL, NULL); 274 275 static dev_type_open(rdopen); 276 static dev_type_close(rdclose); 277 static dev_type_read(rdread); 278 static dev_type_write(rdwrite); 279 static dev_type_ioctl(rdioctl); 280 static dev_type_strategy(rdstrategy); 281 static dev_type_dump(rddump); 282 static dev_type_size(rdsize); 283 284 const struct bdevsw rd_bdevsw = { 285 rdopen, rdclose, rdstrategy, rdioctl, rddump, rdsize, D_DISK 286 }; 287 288 const struct cdevsw rd_cdevsw = { 289 rdopen, rdclose, rdread, rdwrite, rdioctl, 290 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 291 }; 292 293 static int 294 rdmatch(device_t parent, cfdata_t cf, void *aux) 295 { 296 struct hpibbus_attach_args *ha = aux; 297 298 /* 299 * Set punit if operator specified one in the kernel 300 * configuration file. 301 */ 302 if (cf->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 303 cf->hpibbuscf_punit < HPIB_NPUNITS) 304 ha->ha_punit = cf->hpibbuscf_punit; 305 306 if (rdident(parent, NULL, ha) == 0) { 307 /* 308 * XXX Some aging HP-IB drives are slow to 309 * XXX respond; give them a chance to catch 310 * XXX up and probe them again. 311 */ 312 delay(10000); 313 ha->ha_id = hpibid(device_unit(parent), ha->ha_slave); 314 return rdident(parent, NULL, ha); 315 } 316 return 1; 317 } 318 319 static void 320 rdattach(device_t parent, device_t self, void *aux) 321 { 322 struct rd_softc *sc = device_private(self); 323 struct hpibbus_attach_args *ha = aux; 324 325 sc->sc_dev = self; 326 bufq_alloc(&sc->sc_tab, "disksort", BUFQ_SORT_RAWBLOCK); 327 328 if (rdident(parent, sc, ha) == 0) { 329 aprint_error(": didn't respond to describe command!\n"); 330 return; 331 } 332 333 /* 334 * Initialize and attach the disk structure. 335 */ 336 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 337 disk_init(&sc->sc_dkdev, device_xname(sc->sc_dev), NULL); 338 disk_attach(&sc->sc_dkdev); 339 340 sc->sc_slave = ha->ha_slave; 341 sc->sc_punit = ha->ha_punit; 342 343 callout_init(&sc->sc_restart_ch, 0); 344 345 /* Initialize the hpib job queue entry */ 346 sc->sc_hq.hq_softc = sc; 347 sc->sc_hq.hq_slave = sc->sc_slave; 348 sc->sc_hq.hq_start = rdstart; 349 sc->sc_hq.hq_go = rdgo; 350 sc->sc_hq.hq_intr = rdintr; 351 352 sc->sc_flags = RDF_ALIVE; 353 #ifdef DEBUG 354 /* always report errors */ 355 if (rddebug & RDB_ERROR) 356 rderrthresh = 0; 357 #endif 358 /* 359 * attach the device into the random source list 360 */ 361 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 362 RND_TYPE_DISK, 0); 363 } 364 365 static int 366 rdident(device_t parent, struct rd_softc *sc, struct hpibbus_attach_args *ha) 367 { 368 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 369 u_char stat, cmd[3]; 370 char name[7]; 371 int i, id, n, ctlr, slave; 372 373 ctlr = device_unit(parent); 374 slave = ha->ha_slave; 375 376 /* Verify that we have a CS80 device. */ 377 if ((ha->ha_id & 0x200) == 0) 378 return 0; 379 380 /* Is it one of the disks we support? */ 381 for (id = 0; id < numrdidentinfo; id++) 382 if (ha->ha_id == rdidentinfo[id].ri_hwid) 383 break; 384 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 385 return 0; 386 387 /* 388 * If we're just probing for the device, that's all the 389 * work we need to do. 390 */ 391 if (sc == NULL) 392 return 1; 393 394 /* 395 * Reset device and collect description 396 */ 397 rdreset(sc); 398 cmd[0] = C_SUNIT(ha->ha_punit); 399 cmd[1] = C_SVOL(0); 400 cmd[2] = C_DESC; 401 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 402 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 403 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 404 memset(name, 0, sizeof(name)); 405 if (stat == 0) { 406 n = desc->d_name; 407 for (i = 5; i >= 0; i--) { 408 name[i] = (n & 0xf) + '0'; 409 n >>= 4; 410 } 411 } 412 413 #ifdef DEBUG 414 if (rddebug & RDB_IDENT) { 415 aprint_debug("\n"); 416 aprint_debug_dev(sc->sc_dev, "name: %x ('%s')\n", 417 desc->d_name, name); 418 aprint_debug(" iuw %x, maxxfr %d, ctype %d\n", 419 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 420 aprint_debug(" utype %d, bps %d, blkbuf %d, burst %d," 421 " blktime %d\n", 422 desc->d_utype, desc->d_sectsize, 423 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 424 aprint_debug(" avxfr %d, ort %d, atp %d, maxint %d, fv %x" 425 ", rv %x\n", 426 desc->d_uavexfr, desc->d_retry, desc->d_access, 427 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 428 aprint_debug(" maxcyl/head/sect %d/%d/%d, maxvsect %d," 429 " inter %d\n", 430 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 431 desc->d_maxvsectl, desc->d_interleave); 432 aprint_normal("%s", device_xname(sc->sc_dev)); 433 } 434 #endif 435 436 /* 437 * Take care of a couple of anomolies: 438 * 1. 7945A and 7946A both return same HW id 439 * 2. 9122S and 9134D both return same HW id 440 * 3. 9122D and 9134L both return same HW id 441 */ 442 switch (ha->ha_id) { 443 case RD7946AID: 444 if (memcmp(name, "079450", 6) == 0) 445 id = RD7945A; 446 else 447 id = RD7946A; 448 break; 449 450 case RD9134LID: 451 if (memcmp(name, "091340", 6) == 0) 452 id = RD9134L; 453 else 454 id = RD9122D; 455 break; 456 457 case RD9134DID: 458 if (memcmp(name, "091220", 6) == 0) 459 id = RD9122S; 460 else 461 id = RD9134D; 462 break; 463 } 464 465 sc->sc_type = id; 466 467 /* 468 * XXX We use DEV_BSIZE instead of the sector size value pulled 469 * XXX off the driver because all of this code assumes 512 byte 470 * XXX blocks. ICK! 471 */ 472 aprint_normal(": %s\n", rdidentinfo[id].ri_desc); 473 aprint_normal_dev(sc->sc_dev, "%d cylinders, %d heads, %d blocks," 474 " %d bytes/block\n", 475 rdidentinfo[id].ri_ncyl, 476 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 477 DEV_BSIZE); 478 479 return 1; 480 } 481 482 static void 483 rdreset(struct rd_softc *sc) 484 { 485 int ctlr = device_unit(device_parent(sc->sc_dev)); 486 int slave = sc->sc_slave; 487 u_char stat; 488 489 sc->sc_clear.c_unit = C_SUNIT(sc->sc_punit); 490 sc->sc_clear.c_cmd = C_CLEAR; 491 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 492 hpibswait(ctlr, slave); 493 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 494 495 sc->sc_src.c_unit = C_SUNIT(RDCTLR); 496 sc->sc_src.c_nop = C_NOP; 497 sc->sc_src.c_cmd = C_SREL; 498 sc->sc_src.c_param = C_REL; 499 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 500 hpibswait(ctlr, slave); 501 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 502 503 sc->sc_ssmc.c_unit = C_SUNIT(sc->sc_punit); 504 sc->sc_ssmc.c_cmd = C_SSM; 505 sc->sc_ssmc.c_refm = REF_MASK; 506 sc->sc_ssmc.c_fefm = FEF_MASK; 507 sc->sc_ssmc.c_aefm = AEF_MASK; 508 sc->sc_ssmc.c_iefm = IEF_MASK; 509 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 510 hpibswait(ctlr, slave); 511 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 512 #ifdef DEBUG 513 sc->sc_stats.rdresets++; 514 #endif 515 } 516 517 /* 518 * Read or construct a disklabel 519 */ 520 static int 521 rdgetinfo(dev_t dev) 522 { 523 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 524 struct disklabel *lp = sc->sc_dkdev.dk_label; 525 struct partition *pi; 526 const char *msg; 527 528 /* 529 * Set some default values to use while reading the label 530 * or to use if there isn't a label. 531 */ 532 memset((void *)lp, 0, sizeof *lp); 533 rdgetdefaultlabel(sc, lp); 534 535 /* 536 * Now try to read the disklabel 537 */ 538 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 539 if (msg == NULL) 540 return 0; 541 542 pi = lp->d_partitions; 543 printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg); 544 545 pi[2].p_size = rdidentinfo[sc->sc_type].ri_nblocks; 546 /* XXX reset other info since readdisklabel screws with it */ 547 lp->d_npartitions = 3; 548 pi[0].p_size = 0; 549 550 return 0; 551 } 552 553 static int 554 rdopen(dev_t dev, int flags, int mode, struct lwp *l) 555 { 556 struct rd_softc *sc; 557 int error, mask, part; 558 559 sc = device_lookup_private(&rd_cd, rdunit(dev)); 560 if (sc == NULL) 561 return ENXIO; 562 563 if ((sc->sc_flags & RDF_ALIVE) == 0) 564 return ENXIO; 565 566 /* 567 * Wait for any pending opens/closes to complete 568 */ 569 while (sc->sc_flags & (RDF_OPENING|RDF_CLOSING)) 570 (void) tsleep(sc, PRIBIO, "rdopen", 0); 571 572 /* 573 * On first open, get label and partition info. 574 * We may block reading the label, so be careful 575 * to stop any other opens. 576 */ 577 if (sc->sc_dkdev.dk_openmask == 0) { 578 sc->sc_flags |= RDF_OPENING; 579 error = rdgetinfo(dev); 580 sc->sc_flags &= ~RDF_OPENING; 581 wakeup((void *)sc); 582 if (error) 583 return error; 584 } 585 586 part = rdpart(dev); 587 mask = 1 << part; 588 589 /* Check that the partition exists. */ 590 if (part != RAW_PART && 591 (part > sc->sc_dkdev.dk_label->d_npartitions || 592 sc->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 593 return ENXIO; 594 595 /* Ensure only one open at a time. */ 596 switch (mode) { 597 case S_IFCHR: 598 sc->sc_dkdev.dk_copenmask |= mask; 599 break; 600 case S_IFBLK: 601 sc->sc_dkdev.dk_bopenmask |= mask; 602 break; 603 } 604 sc->sc_dkdev.dk_openmask = 605 sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask; 606 607 return 0; 608 } 609 610 static int 611 rdclose(dev_t dev, int flag, int mode, struct lwp *l) 612 { 613 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 614 struct disk *dk = &sc->sc_dkdev; 615 int mask, s; 616 617 mask = 1 << rdpart(dev); 618 if (mode == S_IFCHR) 619 dk->dk_copenmask &= ~mask; 620 else 621 dk->dk_bopenmask &= ~mask; 622 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 623 /* 624 * On last close, we wait for all activity to cease since 625 * the label/parition info will become invalid. Since we 626 * might sleep, we must block any opens while we are here. 627 * Note we don't have to about other closes since we know 628 * we are the last one. 629 */ 630 if (dk->dk_openmask == 0) { 631 sc->sc_flags |= RDF_CLOSING; 632 s = splbio(); 633 while (sc->sc_active) { 634 sc->sc_flags |= RDF_WANTED; 635 (void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0); 636 } 637 splx(s); 638 sc->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 639 wakeup((void *)sc); 640 } 641 return 0; 642 } 643 644 static void 645 rdstrategy(struct buf *bp) 646 { 647 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(bp->b_dev)); 648 struct partition *pinfo; 649 daddr_t bn; 650 int sz, s; 651 int offset; 652 653 #ifdef DEBUG 654 if (rddebug & RDB_FOLLOW) 655 printf("rdstrategy(%p): dev %"PRIx64", bn %llx, bcount %x, %c\n", 656 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 657 (bp->b_flags & B_READ) ? 'R' : 'W'); 658 #endif 659 bn = bp->b_blkno; 660 sz = howmany(bp->b_bcount, DEV_BSIZE); 661 pinfo = &sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 662 663 /* Don't perform partition translation on RAW_PART. */ 664 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 665 666 if (rdpart(bp->b_dev) != RAW_PART) { 667 /* 668 * XXX This block of code belongs in 669 * XXX bounds_check_with_label() 670 */ 671 672 if (bn < 0 || bn + sz > pinfo->p_size) { 673 sz = pinfo->p_size - bn; 674 if (sz == 0) { 675 bp->b_resid = bp->b_bcount; 676 goto done; 677 } 678 if (sz < 0) { 679 bp->b_error = EINVAL; 680 goto done; 681 } 682 bp->b_bcount = dbtob(sz); 683 } 684 /* 685 * Check for write to write protected label 686 */ 687 if (bn + offset <= LABELSECTOR && 688 #if LABELSECTOR != 0 689 bn + offset + sz > LABELSECTOR && 690 #endif 691 !(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) { 692 bp->b_error = EROFS; 693 goto done; 694 } 695 } 696 bp->b_rawblkno = bn + offset; 697 s = splbio(); 698 bufq_put(sc->sc_tab, bp); 699 if (sc->sc_active == 0) { 700 sc->sc_active = 1; 701 rdustart(sc); 702 } 703 splx(s); 704 return; 705 done: 706 biodone(bp); 707 } 708 709 /* 710 * Called from timeout() when handling maintenance releases 711 */ 712 static void 713 rdrestart(void *arg) 714 { 715 int s = splbio(); 716 rdustart((struct rd_softc *)arg); 717 splx(s); 718 } 719 720 static void 721 rdustart(struct rd_softc *sc) 722 { 723 struct buf *bp; 724 725 bp = bufq_peek(sc->sc_tab); 726 sc->sc_addr = bp->b_data; 727 sc->sc_resid = bp->b_bcount; 728 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 729 rdstart(sc); 730 } 731 732 static struct buf * 733 rdfinish(struct rd_softc *sc, struct buf *bp) 734 { 735 736 sc->sc_errcnt = 0; 737 (void)bufq_get(sc->sc_tab); 738 bp->b_resid = 0; 739 biodone(bp); 740 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 741 if ((bp = bufq_peek(sc->sc_tab)) != NULL) 742 return bp; 743 sc->sc_active = 0; 744 if (sc->sc_flags & RDF_WANTED) { 745 sc->sc_flags &= ~RDF_WANTED; 746 wakeup((void *)&sc->sc_tab); 747 } 748 return NULL; 749 } 750 751 static void 752 rdstart(void *arg) 753 { 754 struct rd_softc *sc = arg; 755 struct buf *bp = bufq_peek(sc->sc_tab); 756 int part, ctlr, slave; 757 758 ctlr = device_unit(device_parent(sc->sc_dev)); 759 slave = sc->sc_slave; 760 761 again: 762 #ifdef DEBUG 763 if (rddebug & RDB_FOLLOW) 764 printf("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp, 765 (bp->b_flags & B_READ) ? 'R' : 'W'); 766 #endif 767 part = rdpart(bp->b_dev); 768 sc->sc_flags |= RDF_SEEK; 769 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 770 sc->sc_ioc.c_volume = C_SVOL(0); 771 sc->sc_ioc.c_saddr = C_SADDR; 772 sc->sc_ioc.c_hiaddr = 0; 773 sc->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 774 sc->sc_ioc.c_nop2 = C_NOP; 775 sc->sc_ioc.c_slen = C_SLEN; 776 sc->sc_ioc.c_len = sc->sc_resid; 777 sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 778 #ifdef DEBUG 779 if (rddebug & RDB_IO) 780 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 781 ctlr, slave, C_CMD, 782 &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc) - 2); 783 #endif 784 if (hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 785 sizeof(sc->sc_ioc) - 2) == sizeof(sc->sc_ioc) - 2) { 786 787 /* Instrumentation. */ 788 disk_busy(&sc->sc_dkdev); 789 iostat_seek(sc->sc_dkdev.dk_stats); 790 791 #ifdef DEBUG 792 if (rddebug & RDB_IO) 793 printf("rdstart: hpibawait(%x)\n", ctlr); 794 #endif 795 hpibawait(ctlr); 796 return; 797 } 798 /* 799 * Experience has shown that the hpibwait in this hpibsend will 800 * occasionally timeout. It appears to occur mostly on old 7914 801 * drives with full maintenance tracks. We should probably 802 * integrate this with the backoff code in rderror. 803 */ 804 #ifdef DEBUG 805 if (rddebug & RDB_ERROR) 806 printf("%s: rdstart: cmd %x adr %lx blk %lld len %d ecnt %d\n", 807 device_xname(sc->sc_dev), 808 sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 809 bp->b_blkno, sc->sc_resid, sc->sc_errcnt); 810 sc->sc_stats.rdretries++; 811 #endif 812 sc->sc_flags &= ~RDF_SEEK; 813 rdreset(sc); 814 if (sc->sc_errcnt++ < RDRETRY) 815 goto again; 816 printf("%s: rdstart err: cmd 0x%x sect %ld blk %" PRId64 " len %d\n", 817 device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 818 bp->b_blkno, sc->sc_resid); 819 bp->b_error = EIO; 820 bp = rdfinish(sc, bp); 821 if (bp) { 822 sc->sc_addr = bp->b_data; 823 sc->sc_resid = bp->b_bcount; 824 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 825 goto again; 826 } 827 } 828 829 static void 830 rdgo(void *arg) 831 { 832 struct rd_softc *sc = arg; 833 struct buf *bp = bufq_peek(sc->sc_tab); 834 int rw, ctlr, slave; 835 836 ctlr = device_unit(device_parent(sc->sc_dev)); 837 slave = sc->sc_slave; 838 839 rw = bp->b_flags & B_READ; 840 841 /* Instrumentation. */ 842 disk_busy(&sc->sc_dkdev); 843 844 #ifdef USELEDS 845 ledcontrol(0, 0, LED_DISK); 846 #endif 847 hpibgo(ctlr, slave, C_EXEC, sc->sc_addr, sc->sc_resid, rw, rw != 0); 848 } 849 850 /* ARGSUSED */ 851 static void 852 rdintr(void *arg) 853 { 854 struct rd_softc *sc = arg; 855 int unit = device_unit(sc->sc_dev); 856 struct buf *bp = bufq_peek(sc->sc_tab); 857 u_char stat = 13; /* in case hpibrecv fails */ 858 int rv, restart, ctlr, slave; 859 860 ctlr = device_unit(device_parent(sc->sc_dev)); 861 slave = sc->sc_slave; 862 863 #ifdef DEBUG 864 if (rddebug & RDB_FOLLOW) 865 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 866 (bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags); 867 if (bp == NULL) { 868 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 869 return; 870 } 871 #endif 872 disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid), 873 (bp->b_flags & B_READ)); 874 875 if (sc->sc_flags & RDF_SEEK) { 876 sc->sc_flags &= ~RDF_SEEK; 877 if (hpibustart(ctlr)) 878 rdgo(sc); 879 return; 880 } 881 if ((sc->sc_flags & RDF_SWAIT) == 0) { 882 #ifdef DEBUG 883 sc->sc_stats.rdpolltries++; 884 #endif 885 if (hpibpptest(ctlr, slave) == 0) { 886 #ifdef DEBUG 887 sc->sc_stats.rdpollwaits++; 888 #endif 889 890 /* Instrumentation. */ 891 disk_busy(&sc->sc_dkdev); 892 sc->sc_flags |= RDF_SWAIT; 893 hpibawait(ctlr); 894 return; 895 } 896 } else 897 sc->sc_flags &= ~RDF_SWAIT; 898 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 899 if (rv != 1 || stat) { 900 #ifdef DEBUG 901 if (rddebug & RDB_ERROR) 902 printf("rdintr: recv failed or bad stat %d\n", stat); 903 #endif 904 restart = rderror(unit); 905 #ifdef DEBUG 906 sc->sc_stats.rdretries++; 907 #endif 908 if (sc->sc_errcnt++ < RDRETRY) { 909 if (restart) 910 rdstart(sc); 911 return; 912 } 913 bp->b_error = EIO; 914 } 915 if (rdfinish(sc, bp)) 916 rdustart(sc); 917 rnd_add_uint32(&sc->rnd_source, bp->b_blkno); 918 } 919 920 static int 921 rdstatus(struct rd_softc *sc) 922 { 923 int c, s; 924 u_char stat; 925 int rv; 926 927 c = device_unit(device_parent(sc->sc_dev)); 928 s = sc->sc_slave; 929 sc->sc_rsc.c_unit = C_SUNIT(sc->sc_punit); 930 sc->sc_rsc.c_sram = C_SRAM; 931 sc->sc_rsc.c_ram = C_RAM; 932 sc->sc_rsc.c_cmd = C_STATUS; 933 memset((void *)&sc->sc_stat, 0, sizeof(sc->sc_stat)); 934 rv = hpibsend(c, s, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 935 if (rv != sizeof(sc->sc_rsc)) { 936 #ifdef DEBUG 937 if (rddebug & RDB_STATUS) 938 printf("rdstatus: send C_CMD failed %d != %d\n", 939 rv, sizeof(sc->sc_rsc)); 940 #endif 941 return 1; 942 } 943 rv = hpibrecv(c, s, C_EXEC, &sc->sc_stat, sizeof(sc->sc_stat)); 944 if (rv != sizeof(sc->sc_stat)) { 945 #ifdef DEBUG 946 if (rddebug & RDB_STATUS) 947 printf("rdstatus: send C_EXEC failed %d != %d\n", 948 rv, sizeof(sc->sc_stat)); 949 #endif 950 return 1; 951 } 952 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 953 if (rv != 1 || stat) { 954 #ifdef DEBUG 955 if (rddebug & RDB_STATUS) 956 printf("rdstatus: recv failed %d or bad stat %d\n", 957 rv, stat); 958 #endif 959 return 1; 960 } 961 return 0; 962 } 963 964 /* 965 * Deal with errors. 966 * Returns 1 if request should be restarted, 967 * 0 if we should just quietly give up. 968 */ 969 static int 970 rderror(int unit) 971 { 972 struct rd_softc *sc = device_lookup_private(&rd_cd,unit); 973 struct rd_stat *sp; 974 struct buf *bp; 975 daddr_t hwbn, pbn; 976 char *hexstr(int, int); /* XXX */ 977 978 if (rdstatus(sc)) { 979 #ifdef DEBUG 980 printf("%s: couldn't get status\n", device_xname(sc->sc_dev)); 981 #endif 982 rdreset(sc); 983 return 1; 984 } 985 sp = &sc->sc_stat; 986 if (sp->c_fef & FEF_REXMT) 987 return 1; 988 if (sp->c_fef & FEF_PF) { 989 rdreset(sc); 990 return 1; 991 } 992 /* 993 * Unit requests release for internal maintenance. 994 * We just delay awhile and try again later. Use expontially 995 * increasing backoff ala ethernet drivers since we don't really 996 * know how long the maintenance will take. With RDWAITC and 997 * RDRETRY as defined, the range is 1 to 32 seconds. 998 */ 999 if (sp->c_fef & FEF_IMR) { 1000 extern int hz; 1001 int rdtimo = RDWAITC << sc->sc_errcnt; 1002 #ifdef DEBUG 1003 printf("%s: internal maintenance, %d second timeout\n", 1004 device_xname(sc->sc_dev), rdtimo); 1005 sc->sc_stats.rdtimeouts++; 1006 #endif 1007 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 1008 callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc); 1009 return 0; 1010 } 1011 /* 1012 * Only report error if we have reached the error reporting 1013 * threshhold. By default, this will only report after the 1014 * retry limit has been exceeded. 1015 */ 1016 if (sc->sc_errcnt < rderrthresh) 1017 return 1; 1018 1019 /* 1020 * First conjure up the block number at which the error occurred. 1021 * Note that not all errors report a block number, in that case 1022 * we just use b_blkno. 1023 */ 1024 bp = bufq_peek(sc->sc_tab); 1025 pbn = sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1026 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1027 (sp->c_ief & IEF_RRMASK)) { 1028 hwbn = RDBTOS(pbn + bp->b_blkno); 1029 pbn = bp->b_blkno; 1030 } else { 1031 hwbn = sp->c_blk; 1032 pbn = RDSTOB(hwbn) - pbn; 1033 } 1034 /* 1035 * Now output a generic message suitable for badsect. 1036 * Note that we don't use harderr cuz it just prints 1037 * out b_blkno which is just the beginning block number 1038 * of the transfer, not necessary where the error occurred. 1039 */ 1040 printf("%s%c: hard error sn%" PRId64 "\n", device_xname(sc->sc_dev), 1041 'a'+rdpart(bp->b_dev), pbn); 1042 /* 1043 * Now report the status as returned by the hardware with 1044 * attempt at interpretation (unless debugging). 1045 */ 1046 printf("%s %s error:", device_xname(sc->sc_dev), 1047 (bp->b_flags & B_READ) ? "read" : "write"); 1048 #ifdef DEBUG 1049 if (rddebug & RDB_ERROR) { 1050 /* status info */ 1051 printf("\n volume: %d, unit: %d\n", 1052 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1053 rdprinterr("reject", sp->c_ref, err_reject); 1054 rdprinterr("fault", sp->c_fef, err_fault); 1055 rdprinterr("access", sp->c_aef, err_access); 1056 rdprinterr("info", sp->c_ief, err_info); 1057 printf(" block: %lld, P1-P10: ", hwbn); 1058 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1059 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1060 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1061 /* command */ 1062 printf(" ioc: "); 1063 printf("0x%x", *(u_int *)&sc->sc_ioc.c_pad); 1064 printf("0x%x", *(u_short *)&sc->sc_ioc.c_hiaddr); 1065 printf("0x%x", *(u_int *)&sc->sc_ioc.c_addr); 1066 printf("0x%x", *(u_short *)&sc->sc_ioc.c_nop2); 1067 printf("0x%x", *(u_int *)&sc->sc_ioc.c_len); 1068 printf("0x%x\n", *(u_short *)&sc->sc_ioc.c_cmd); 1069 return 1; 1070 } 1071 #endif 1072 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1073 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1074 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1075 printf("P1-P10: "); 1076 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1077 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1078 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1079 return 1; 1080 } 1081 1082 static int 1083 rdread(dev_t dev, struct uio *uio, int flags) 1084 { 1085 1086 return physio(rdstrategy, NULL, dev, B_READ, minphys, uio); 1087 } 1088 1089 static int 1090 rdwrite(dev_t dev, struct uio *uio, int flags) 1091 { 1092 1093 return physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio); 1094 } 1095 1096 static int 1097 rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1098 { 1099 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 1100 struct disklabel *lp = sc->sc_dkdev.dk_label; 1101 int error, flags; 1102 1103 switch (cmd) { 1104 case DIOCGDINFO: 1105 *(struct disklabel *)data = *lp; 1106 return 0; 1107 1108 case DIOCGPART: 1109 ((struct partinfo *)data)->disklab = lp; 1110 ((struct partinfo *)data)->part = 1111 &lp->d_partitions[rdpart(dev)]; 1112 return 0; 1113 1114 case DIOCWLABEL: 1115 if ((flag & FWRITE) == 0) 1116 return EBADF; 1117 if (*(int *)data) 1118 sc->sc_flags |= RDF_WLABEL; 1119 else 1120 sc->sc_flags &= ~RDF_WLABEL; 1121 return 0; 1122 1123 case DIOCSDINFO: 1124 if ((flag & FWRITE) == 0) 1125 return EBADF; 1126 return setdisklabel(lp, (struct disklabel *)data, 1127 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1128 NULL); 1129 1130 case DIOCWDINFO: 1131 if ((flag & FWRITE) == 0) 1132 return EBADF; 1133 error = setdisklabel(lp, (struct disklabel *)data, 1134 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1135 NULL); 1136 if (error) 1137 return error; 1138 flags = sc->sc_flags; 1139 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1140 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 1141 sc->sc_flags = flags; 1142 return error; 1143 1144 case DIOCGDEFLABEL: 1145 rdgetdefaultlabel(sc, (struct disklabel *)data); 1146 return 0; 1147 } 1148 return EINVAL; 1149 } 1150 1151 static void 1152 rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp) 1153 { 1154 int type = sc->sc_type; 1155 1156 memset((void *)lp, 0, sizeof(struct disklabel)); 1157 1158 lp->d_type = DTYPE_HPIB; 1159 lp->d_secsize = DEV_BSIZE; 1160 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1161 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1162 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1163 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1164 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1165 1166 strlcpy(lp->d_typename, rdidentinfo[type].ri_desc, 1167 sizeof(lp->d_typename)); 1168 strlcpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1169 lp->d_rpm = 3000; 1170 lp->d_interleave = 1; 1171 lp->d_flags = 0; 1172 1173 lp->d_partitions[RAW_PART].p_offset = 0; 1174 lp->d_partitions[RAW_PART].p_size = 1175 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1176 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1177 lp->d_npartitions = RAW_PART + 1; 1178 1179 lp->d_magic = DISKMAGIC; 1180 lp->d_magic2 = DISKMAGIC; 1181 lp->d_checksum = dkcksum(lp); 1182 } 1183 1184 int 1185 rdsize(dev_t dev) 1186 { 1187 struct rd_softc *sc; 1188 int psize, didopen = 0; 1189 1190 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1191 if (sc == NULL) 1192 return ENXIO; 1193 1194 if ((sc->sc_flags & RDF_ALIVE) == 0) 1195 return ENXIO; 1196 1197 /* 1198 * We get called very early on (via swapconf) 1199 * without the device being open so we may need 1200 * to handle it here. 1201 */ 1202 if (sc->sc_dkdev.dk_openmask == 0) { 1203 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1204 return -1; 1205 didopen = 1; 1206 } 1207 psize = sc->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1208 (sc->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1209 if (didopen) 1210 (void)rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1211 return psize; 1212 } 1213 1214 #ifdef DEBUG 1215 static void 1216 rdprinterr(const char *str, short err, const char **tab) 1217 { 1218 int i; 1219 int printed; 1220 1221 if (err == 0) 1222 return; 1223 printf(" %s error %d field:", str, err); 1224 printed = 0; 1225 for (i = 0; i < 16; i++) 1226 if (err & (0x8000 >> i)) 1227 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1228 printf("\n"); 1229 } 1230 #endif 1231 1232 static int rddoingadump; /* simple mutex */ 1233 1234 /* 1235 * Non-interrupt driven, non-DMA dump routine. 1236 */ 1237 static int 1238 rddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1239 { 1240 int sectorsize; /* size of a disk sector */ 1241 int nsects; /* number of sectors in partition */ 1242 int sectoff; /* sector offset of partition */ 1243 int totwrt; /* total number of sectors left to write */ 1244 int nwrt; /* current number of sectors to write */ 1245 int unit, part; 1246 int ctlr, slave; 1247 struct rd_softc *sc; 1248 struct disklabel *lp; 1249 char stat; 1250 1251 /* Check for recursive dump; if so, punt. */ 1252 if (rddoingadump) 1253 return EFAULT; 1254 rddoingadump = 1; 1255 1256 /* Decompose unit and partition. */ 1257 unit = rdunit(dev); 1258 part = rdpart(dev); 1259 1260 /* Make sure dump device is ok. */ 1261 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1262 if (sc == NULL) 1263 return ENXIO; 1264 1265 if ((sc->sc_flags & RDF_ALIVE) == 0) 1266 return ENXIO; 1267 1268 ctlr = device_unit(device_parent(sc->sc_dev)); 1269 slave = sc->sc_slave; 1270 1271 /* 1272 * Convert to disk sectors. Request must be a multiple of size. 1273 */ 1274 lp = sc->sc_dkdev.dk_label; 1275 sectorsize = lp->d_secsize; 1276 if ((size % sectorsize) != 0) 1277 return EFAULT; 1278 totwrt = size / sectorsize; 1279 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1280 1281 nsects = lp->d_partitions[part].p_size; 1282 sectoff = lp->d_partitions[part].p_offset; 1283 1284 /* Check transfer bounds against partition size. */ 1285 if ((blkno < 0) || (blkno + totwrt) > nsects) 1286 return EINVAL; 1287 1288 /* Offset block number to start of partition. */ 1289 blkno += sectoff; 1290 1291 while (totwrt > 0) { 1292 nwrt = totwrt; /* XXX */ 1293 #ifndef RD_DUMP_NOT_TRUSTED 1294 /* 1295 * Fill out and send HPIB command. 1296 */ 1297 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 1298 sc->sc_ioc.c_volume = C_SVOL(0); 1299 sc->sc_ioc.c_saddr = C_SADDR; 1300 sc->sc_ioc.c_hiaddr = 0; 1301 sc->sc_ioc.c_addr = RDBTOS(blkno); 1302 sc->sc_ioc.c_nop2 = C_NOP; 1303 sc->sc_ioc.c_slen = C_SLEN; 1304 sc->sc_ioc.c_len = nwrt * sectorsize; 1305 sc->sc_ioc.c_cmd = C_WRITE; 1306 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 1307 sizeof(sc->sc_ioc) - 2); 1308 if (hpibswait(ctlr, slave)) 1309 return EIO; 1310 1311 /* 1312 * Send the data. 1313 */ 1314 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1315 (void) hpibswait(ctlr, slave); 1316 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1317 if (stat) 1318 return EIO; 1319 #else /* RD_DUMP_NOT_TRUSTED */ 1320 /* Let's just talk about this first... */ 1321 printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev), 1322 va, blkno); 1323 delay(500 * 1000); /* half a second */ 1324 #endif /* RD_DUMP_NOT_TRUSTED */ 1325 1326 /* update block count */ 1327 totwrt -= nwrt; 1328 blkno += nwrt; 1329 va = (char *)va + sectorsize * nwrt; 1330 } 1331 rddoingadump = 0; 1332 return 0; 1333 } 1334
Indexes created Tue Sep 30 11:09:46 GMT 2025