1 /* $NetBSD: rd.c,v 1.103 2021/01/10 00:58:56 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 1.103 2021/01/10 00:58:56 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/rndsource.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 .d_open = rdopen, 286 .d_close = rdclose, 287 .d_strategy = rdstrategy, 288 .d_ioctl = rdioctl, 289 .d_dump = rddump, 290 .d_psize = rdsize, 291 .d_discard = nodiscard, 292 .d_flag = D_DISK 293 }; 294 295 const struct cdevsw rd_cdevsw = { 296 .d_open = rdopen, 297 .d_close = rdclose, 298 .d_read = rdread, 299 .d_write = rdwrite, 300 .d_ioctl = rdioctl, 301 .d_stop = nostop, 302 .d_tty = notty, 303 .d_poll = nopoll, 304 .d_mmap = nommap, 305 .d_kqfilter = nokqfilter, 306 .d_discard = nodiscard, 307 .d_flag = D_DISK 308 }; 309 310 static int 311 rdmatch(device_t parent, cfdata_t cf, void *aux) 312 { 313 struct hpibbus_attach_args *ha = aux; 314 315 /* 316 * Set punit if operator specified one in the kernel 317 * configuration file. 318 */ 319 if (cf->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 320 cf->hpibbuscf_punit < HPIB_NPUNITS) 321 ha->ha_punit = cf->hpibbuscf_punit; 322 323 if (rdident(parent, NULL, ha) == 0) { 324 /* 325 * XXX Some aging HP-IB drives are slow to 326 * XXX respond; give them a chance to catch 327 * XXX up and probe them again. 328 */ 329 delay(10000); 330 ha->ha_id = hpibid(device_unit(parent), ha->ha_slave); 331 return rdident(parent, NULL, ha); 332 } 333 return 1; 334 } 335 336 static void 337 rdattach(device_t parent, device_t self, void *aux) 338 { 339 struct rd_softc *sc = device_private(self); 340 struct hpibbus_attach_args *ha = aux; 341 342 sc->sc_dev = self; 343 bufq_alloc(&sc->sc_tab, "disksort", BUFQ_SORT_RAWBLOCK); 344 345 if (rdident(parent, sc, ha) == 0) { 346 aprint_error(": didn't respond to describe command!\n"); 347 return; 348 } 349 350 /* 351 * Initialize and attach the disk structure. 352 */ 353 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 354 disk_init(&sc->sc_dkdev, device_xname(sc->sc_dev), NULL); 355 disk_attach(&sc->sc_dkdev); 356 357 sc->sc_slave = ha->ha_slave; 358 sc->sc_punit = ha->ha_punit; 359 360 callout_init(&sc->sc_restart_ch, 0); 361 362 /* Initialize the hpib job queue entry */ 363 sc->sc_hq.hq_softc = sc; 364 sc->sc_hq.hq_slave = sc->sc_slave; 365 sc->sc_hq.hq_start = rdstart; 366 sc->sc_hq.hq_go = rdgo; 367 sc->sc_hq.hq_intr = rdintr; 368 369 sc->sc_flags = RDF_ALIVE; 370 #ifdef DEBUG 371 /* always report errors */ 372 if (rddebug & RDB_ERROR) 373 rderrthresh = 0; 374 #endif 375 /* 376 * attach the device into the random source list 377 */ 378 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 379 RND_TYPE_DISK, RND_FLAG_DEFAULT); 380 } 381 382 static int 383 rdident(device_t parent, struct rd_softc *sc, struct hpibbus_attach_args *ha) 384 { 385 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 386 u_char stat, cmd[3]; 387 char name[7], pbuf[9]; 388 int i, id, n, ctlr, slave; 389 390 ctlr = device_unit(parent); 391 slave = ha->ha_slave; 392 393 /* Verify that we have a CS80 device. */ 394 if ((ha->ha_id & 0x200) == 0) 395 return 0; 396 397 /* Is it one of the disks we support? */ 398 for (id = 0; id < numrdidentinfo; id++) 399 if (ha->ha_id == rdidentinfo[id].ri_hwid) 400 break; 401 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 402 return 0; 403 404 /* 405 * If we're just probing for the device, that's all the 406 * work we need to do. 407 */ 408 if (sc == NULL) 409 return 1; 410 411 /* 412 * Reset device and collect description 413 */ 414 rdreset(sc); 415 cmd[0] = C_SUNIT(ha->ha_punit); 416 cmd[1] = C_SVOL(0); 417 cmd[2] = C_DESC; 418 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 419 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 420 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 421 memset(name, 0, sizeof(name)); 422 if (stat == 0) { 423 n = desc->d_name; 424 for (i = 5; i >= 0; i--) { 425 name[i] = (n & 0xf) + '0'; 426 n >>= 4; 427 } 428 } 429 430 #ifdef DEBUG 431 if (rddebug & RDB_IDENT) { 432 aprint_debug("\n"); 433 aprint_debug_dev(sc->sc_dev, "name: %x ('%s')\n", 434 desc->d_name, name); 435 aprint_debug(" iuw %x, maxxfr %d, ctype %d\n", 436 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 437 aprint_debug(" utype %d, bps %d, blkbuf %d, burst %d," 438 " blktime %d\n", 439 desc->d_utype, desc->d_sectsize, 440 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 441 aprint_debug(" avxfr %d, ort %d, atp %d, maxint %d, fv %x" 442 ", rv %x\n", 443 desc->d_uavexfr, desc->d_retry, desc->d_access, 444 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 445 aprint_debug(" maxcyl/head/sect %d/%d/%d, maxvsect %d," 446 " inter %d\n", 447 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 448 desc->d_maxvsectl, desc->d_interleave); 449 aprint_normal("%s", device_xname(sc->sc_dev)); 450 } 451 #endif 452 453 /* 454 * Take care of a couple of anomolies: 455 * 1. 7945A and 7946A both return same HW id 456 * 2. 9122S and 9134D both return same HW id 457 * 3. 9122D and 9134L both return same HW id 458 */ 459 switch (ha->ha_id) { 460 case RD7946AID: 461 if (memcmp(name, "079450", 6) == 0) 462 id = RD7945A; 463 else 464 id = RD7946A; 465 break; 466 467 case RD9134LID: 468 if (memcmp(name, "091340", 6) == 0) 469 id = RD9134L; 470 else 471 id = RD9122D; 472 break; 473 474 case RD9134DID: 475 if (memcmp(name, "091220", 6) == 0) 476 id = RD9122S; 477 else 478 id = RD9134D; 479 break; 480 } 481 482 sc->sc_type = id; 483 484 /* 485 * XXX We use DEV_BSIZE instead of the sector size value pulled 486 * XXX off the driver because all of this code assumes 512 byte 487 * XXX blocks. ICK! 488 */ 489 aprint_normal(": %s\n", rdidentinfo[id].ri_desc); 490 format_bytes(pbuf, sizeof(pbuf), 491 rdidentinfo[id].ri_nblocks * DEV_BSIZE); 492 aprint_normal_dev(sc->sc_dev, "%s, %d cyl, %d head, %d sec," 493 " %d bytes/block x %u blocks\n", 494 pbuf, rdidentinfo[id].ri_ncyl, rdidentinfo[id].ri_ntpc, 495 rdidentinfo[id].ri_nbpt, 496 DEV_BSIZE, rdidentinfo[id].ri_nblocks); 497 498 return 1; 499 } 500 501 static void 502 rdreset(struct rd_softc *sc) 503 { 504 int ctlr = device_unit(device_parent(sc->sc_dev)); 505 int slave = sc->sc_slave; 506 u_char stat; 507 508 sc->sc_clear.c_unit = C_SUNIT(sc->sc_punit); 509 sc->sc_clear.c_cmd = C_CLEAR; 510 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 511 hpibswait(ctlr, slave); 512 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 513 514 sc->sc_src.c_unit = C_SUNIT(RDCTLR); 515 sc->sc_src.c_nop = C_NOP; 516 sc->sc_src.c_cmd = C_SREL; 517 sc->sc_src.c_param = C_REL; 518 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 519 hpibswait(ctlr, slave); 520 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 521 522 sc->sc_ssmc.c_unit = C_SUNIT(sc->sc_punit); 523 sc->sc_ssmc.c_cmd = C_SSM; 524 sc->sc_ssmc.c_refm = REF_MASK; 525 sc->sc_ssmc.c_fefm = FEF_MASK; 526 sc->sc_ssmc.c_aefm = AEF_MASK; 527 sc->sc_ssmc.c_iefm = IEF_MASK; 528 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 529 hpibswait(ctlr, slave); 530 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 531 #ifdef DEBUG 532 sc->sc_stats.rdresets++; 533 #endif 534 } 535 536 /* 537 * Read or construct a disklabel 538 */ 539 static int 540 rdgetinfo(dev_t dev) 541 { 542 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 543 struct disklabel *lp = sc->sc_dkdev.dk_label; 544 struct partition *pi; 545 const char *msg; 546 547 /* 548 * Set some default values to use while reading the label 549 * or to use if there isn't a label. 550 */ 551 memset((void *)lp, 0, sizeof *lp); 552 rdgetdefaultlabel(sc, lp); 553 554 /* 555 * Now try to read the disklabel 556 */ 557 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 558 if (msg == NULL) 559 return 0; 560 561 pi = lp->d_partitions; 562 printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg); 563 564 pi[2].p_size = rdidentinfo[sc->sc_type].ri_nblocks; 565 /* XXX reset other info since readdisklabel screws with it */ 566 lp->d_npartitions = 3; 567 pi[0].p_size = 0; 568 569 return 0; 570 } 571 572 static int 573 rdopen(dev_t dev, int flags, int mode, struct lwp *l) 574 { 575 struct rd_softc *sc; 576 int error, mask, part; 577 578 sc = device_lookup_private(&rd_cd, rdunit(dev)); 579 if (sc == NULL) 580 return ENXIO; 581 582 if ((sc->sc_flags & RDF_ALIVE) == 0) 583 return ENXIO; 584 585 /* 586 * Wait for any pending opens/closes to complete 587 */ 588 while (sc->sc_flags & (RDF_OPENING|RDF_CLOSING)) 589 (void) tsleep(sc, PRIBIO, "rdopen", 0); 590 591 /* 592 * On first open, get label and partition info. 593 * We may block reading the label, so be careful 594 * to stop any other opens. 595 */ 596 if (sc->sc_dkdev.dk_openmask == 0) { 597 sc->sc_flags |= RDF_OPENING; 598 error = rdgetinfo(dev); 599 sc->sc_flags &= ~RDF_OPENING; 600 wakeup((void *)sc); 601 if (error) 602 return error; 603 } 604 605 part = rdpart(dev); 606 mask = 1 << part; 607 608 /* Check that the partition exists. */ 609 if (part != RAW_PART && 610 (part > sc->sc_dkdev.dk_label->d_npartitions || 611 sc->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 612 return ENXIO; 613 614 /* Ensure only one open at a time. */ 615 switch (mode) { 616 case S_IFCHR: 617 sc->sc_dkdev.dk_copenmask |= mask; 618 break; 619 case S_IFBLK: 620 sc->sc_dkdev.dk_bopenmask |= mask; 621 break; 622 } 623 sc->sc_dkdev.dk_openmask = 624 sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask; 625 626 return 0; 627 } 628 629 static int 630 rdclose(dev_t dev, int flag, int mode, struct lwp *l) 631 { 632 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 633 struct disk *dk = &sc->sc_dkdev; 634 int mask, s; 635 636 mask = 1 << rdpart(dev); 637 if (mode == S_IFCHR) 638 dk->dk_copenmask &= ~mask; 639 else 640 dk->dk_bopenmask &= ~mask; 641 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 642 /* 643 * On last close, we wait for all activity to cease since 644 * the label/partition info will become invalid. Since we 645 * might sleep, we must block any opens while we are here. 646 * Note we don't have to about other closes since we know 647 * we are the last one. 648 */ 649 if (dk->dk_openmask == 0) { 650 sc->sc_flags |= RDF_CLOSING; 651 s = splbio(); 652 while (sc->sc_active) { 653 sc->sc_flags |= RDF_WANTED; 654 (void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0); 655 } 656 splx(s); 657 sc->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 658 wakeup((void *)sc); 659 } 660 return 0; 661 } 662 663 static void 664 rdstrategy(struct buf *bp) 665 { 666 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(bp->b_dev)); 667 struct partition *pinfo; 668 daddr_t bn; 669 int sz, s; 670 int offset; 671 672 #ifdef DEBUG 673 if (rddebug & RDB_FOLLOW) 674 printf("rdstrategy(%p): dev %"PRIx64", bn %llx, bcount %x, %c\n", 675 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 676 (bp->b_flags & B_READ) ? 'R' : 'W'); 677 #endif 678 bn = bp->b_blkno; 679 sz = howmany(bp->b_bcount, DEV_BSIZE); 680 pinfo = &sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 681 682 /* Don't perform partition translation on RAW_PART. */ 683 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 684 685 if (rdpart(bp->b_dev) != RAW_PART) { 686 /* 687 * XXX This block of code belongs in 688 * XXX bounds_check_with_label() 689 */ 690 691 if (bn < 0 || bn + sz > pinfo->p_size) { 692 sz = pinfo->p_size - bn; 693 if (sz == 0) { 694 bp->b_resid = bp->b_bcount; 695 goto done; 696 } 697 if (sz < 0) { 698 bp->b_error = EINVAL; 699 goto done; 700 } 701 bp->b_bcount = dbtob(sz); 702 } 703 /* 704 * Check for write to write protected label 705 */ 706 if (bn + offset <= LABELSECTOR && 707 #if LABELSECTOR != 0 708 bn + offset + sz > LABELSECTOR && 709 #endif 710 !(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) { 711 bp->b_error = EROFS; 712 goto done; 713 } 714 } 715 bp->b_rawblkno = bn + offset; 716 s = splbio(); 717 bufq_put(sc->sc_tab, bp); 718 if (sc->sc_active == 0) { 719 sc->sc_active = 1; 720 rdustart(sc); 721 } 722 splx(s); 723 return; 724 done: 725 biodone(bp); 726 } 727 728 /* 729 * Called from timeout() when handling maintenance releases 730 */ 731 static void 732 rdrestart(void *arg) 733 { 734 int s = splbio(); 735 rdustart((struct rd_softc *)arg); 736 splx(s); 737 } 738 739 static void 740 rdustart(struct rd_softc *sc) 741 { 742 struct buf *bp; 743 744 bp = bufq_peek(sc->sc_tab); 745 sc->sc_addr = bp->b_data; 746 sc->sc_resid = bp->b_bcount; 747 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 748 rdstart(sc); 749 } 750 751 static struct buf * 752 rdfinish(struct rd_softc *sc, struct buf *bp) 753 { 754 755 sc->sc_errcnt = 0; 756 (void)bufq_get(sc->sc_tab); 757 bp->b_resid = 0; 758 biodone(bp); 759 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 760 if ((bp = bufq_peek(sc->sc_tab)) != NULL) 761 return bp; 762 sc->sc_active = 0; 763 if (sc->sc_flags & RDF_WANTED) { 764 sc->sc_flags &= ~RDF_WANTED; 765 wakeup((void *)&sc->sc_tab); 766 } 767 return NULL; 768 } 769 770 static void 771 rdstart(void *arg) 772 { 773 struct rd_softc *sc = arg; 774 struct buf *bp = bufq_peek(sc->sc_tab); 775 int ctlr, slave; 776 777 ctlr = device_unit(device_parent(sc->sc_dev)); 778 slave = sc->sc_slave; 779 780 again: 781 #ifdef DEBUG 782 if (rddebug & RDB_FOLLOW) 783 printf("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp, 784 (bp->b_flags & B_READ) ? 'R' : 'W'); 785 #endif 786 sc->sc_flags |= RDF_SEEK; 787 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 788 sc->sc_ioc.c_volume = C_SVOL(0); 789 sc->sc_ioc.c_saddr = C_SADDR; 790 sc->sc_ioc.c_hiaddr = 0; 791 sc->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 792 sc->sc_ioc.c_nop2 = C_NOP; 793 sc->sc_ioc.c_slen = C_SLEN; 794 sc->sc_ioc.c_len = sc->sc_resid; 795 sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 796 #ifdef DEBUG 797 if (rddebug & RDB_IO) 798 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 799 ctlr, slave, C_CMD, 800 &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc) - 2); 801 #endif 802 if (hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 803 sizeof(sc->sc_ioc) - 2) == sizeof(sc->sc_ioc) - 2) { 804 805 /* Instrumentation. */ 806 disk_busy(&sc->sc_dkdev); 807 iostat_seek(sc->sc_dkdev.dk_stats); 808 809 #ifdef DEBUG 810 if (rddebug & RDB_IO) 811 printf("rdstart: hpibawait(%x)\n", ctlr); 812 #endif 813 hpibawait(ctlr); 814 return; 815 } 816 /* 817 * Experience has shown that the hpibwait in this hpibsend will 818 * occasionally timeout. It appears to occur mostly on old 7914 819 * drives with full maintenance tracks. We should probably 820 * integrate this with the backoff code in rderror. 821 */ 822 #ifdef DEBUG 823 if (rddebug & RDB_ERROR) 824 printf("%s: rdstart: cmd %x adr %lx blk %lld len %d ecnt %d\n", 825 device_xname(sc->sc_dev), 826 sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 827 bp->b_blkno, sc->sc_resid, sc->sc_errcnt); 828 sc->sc_stats.rdretries++; 829 #endif 830 sc->sc_flags &= ~RDF_SEEK; 831 rdreset(sc); 832 if (sc->sc_errcnt++ < RDRETRY) 833 goto again; 834 printf("%s: rdstart err: cmd 0x%x sect %ld blk %" PRId64 " len %d\n", 835 device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 836 bp->b_blkno, sc->sc_resid); 837 bp->b_error = EIO; 838 bp = rdfinish(sc, bp); 839 if (bp) { 840 sc->sc_addr = bp->b_data; 841 sc->sc_resid = bp->b_bcount; 842 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 843 goto again; 844 } 845 } 846 847 static void 848 rdgo(void *arg) 849 { 850 struct rd_softc *sc = arg; 851 struct buf *bp = bufq_peek(sc->sc_tab); 852 int rw, ctlr, slave; 853 854 ctlr = device_unit(device_parent(sc->sc_dev)); 855 slave = sc->sc_slave; 856 857 rw = bp->b_flags & B_READ; 858 859 /* Instrumentation. */ 860 disk_busy(&sc->sc_dkdev); 861 862 #ifdef USELEDS 863 ledcontrol(0, 0, LED_DISK); 864 #endif 865 hpibgo(ctlr, slave, C_EXEC, sc->sc_addr, sc->sc_resid, rw, rw != 0); 866 } 867 868 /* ARGSUSED */ 869 static void 870 rdintr(void *arg) 871 { 872 struct rd_softc *sc = arg; 873 int unit = device_unit(sc->sc_dev); 874 struct buf *bp = bufq_peek(sc->sc_tab); 875 u_char stat = 13; /* in case hpibrecv fails */ 876 int rv, restart, ctlr, slave; 877 878 ctlr = device_unit(device_parent(sc->sc_dev)); 879 slave = sc->sc_slave; 880 881 #ifdef DEBUG 882 if (rddebug & RDB_FOLLOW) 883 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 884 (bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags); 885 if (bp == NULL) { 886 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 887 return; 888 } 889 #endif 890 disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid), 891 (bp->b_flags & B_READ)); 892 893 if (sc->sc_flags & RDF_SEEK) { 894 sc->sc_flags &= ~RDF_SEEK; 895 if (hpibustart(ctlr)) 896 rdgo(sc); 897 return; 898 } 899 if ((sc->sc_flags & RDF_SWAIT) == 0) { 900 #ifdef DEBUG 901 sc->sc_stats.rdpolltries++; 902 #endif 903 if (hpibpptest(ctlr, slave) == 0) { 904 #ifdef DEBUG 905 sc->sc_stats.rdpollwaits++; 906 #endif 907 908 /* Instrumentation. */ 909 disk_busy(&sc->sc_dkdev); 910 sc->sc_flags |= RDF_SWAIT; 911 hpibawait(ctlr); 912 return; 913 } 914 } else 915 sc->sc_flags &= ~RDF_SWAIT; 916 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 917 if (rv != 1 || stat) { 918 #ifdef DEBUG 919 if (rddebug & RDB_ERROR) 920 printf("rdintr: recv failed or bad stat %d\n", stat); 921 #endif 922 restart = rderror(unit); 923 #ifdef DEBUG 924 sc->sc_stats.rdretries++; 925 #endif 926 if (sc->sc_errcnt++ < RDRETRY) { 927 if (restart) 928 rdstart(sc); 929 return; 930 } 931 bp->b_error = EIO; 932 } 933 if (rdfinish(sc, bp)) 934 rdustart(sc); 935 rnd_add_uint32(&sc->rnd_source, bp->b_blkno); 936 } 937 938 static int 939 rdstatus(struct rd_softc *sc) 940 { 941 int c, s; 942 u_char stat; 943 int rv; 944 945 c = device_unit(device_parent(sc->sc_dev)); 946 s = sc->sc_slave; 947 sc->sc_rsc.c_unit = C_SUNIT(sc->sc_punit); 948 sc->sc_rsc.c_sram = C_SRAM; 949 sc->sc_rsc.c_ram = C_RAM; 950 sc->sc_rsc.c_cmd = C_STATUS; 951 memset((void *)&sc->sc_stat, 0, sizeof(sc->sc_stat)); 952 rv = hpibsend(c, s, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 953 if (rv != sizeof(sc->sc_rsc)) { 954 #ifdef DEBUG 955 if (rddebug & RDB_STATUS) 956 printf("rdstatus: send C_CMD failed %d != %d\n", 957 rv, sizeof(sc->sc_rsc)); 958 #endif 959 return 1; 960 } 961 rv = hpibrecv(c, s, C_EXEC, &sc->sc_stat, sizeof(sc->sc_stat)); 962 if (rv != sizeof(sc->sc_stat)) { 963 #ifdef DEBUG 964 if (rddebug & RDB_STATUS) 965 printf("rdstatus: send C_EXEC failed %d != %d\n", 966 rv, sizeof(sc->sc_stat)); 967 #endif 968 return 1; 969 } 970 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 971 if (rv != 1 || stat) { 972 #ifdef DEBUG 973 if (rddebug & RDB_STATUS) 974 printf("rdstatus: recv failed %d or bad stat %d\n", 975 rv, stat); 976 #endif 977 return 1; 978 } 979 return 0; 980 } 981 982 /* 983 * Deal with errors. 984 * Returns 1 if request should be restarted, 985 * 0 if we should just quietly give up. 986 */ 987 static int 988 rderror(int unit) 989 { 990 struct rd_softc *sc = device_lookup_private(&rd_cd,unit); 991 struct rd_stat *sp; 992 struct buf *bp; 993 daddr_t hwbn, pbn; 994 char *hexstr(int, int); /* XXX */ 995 996 if (rdstatus(sc)) { 997 #ifdef DEBUG 998 printf("%s: couldn't get status\n", device_xname(sc->sc_dev)); 999 #endif 1000 rdreset(sc); 1001 return 1; 1002 } 1003 sp = &sc->sc_stat; 1004 if (sp->c_fef & FEF_REXMT) 1005 return 1; 1006 if (sp->c_fef & FEF_PF) { 1007 rdreset(sc); 1008 return 1; 1009 } 1010 /* 1011 * Unit requests release for internal maintenance. 1012 * We just delay awhile and try again later. Use expontially 1013 * increasing backoff ala ethernet drivers since we don't really 1014 * know how long the maintenance will take. With RDWAITC and 1015 * RDRETRY as defined, the range is 1 to 32 seconds. 1016 */ 1017 if (sp->c_fef & FEF_IMR) { 1018 extern int hz; 1019 int rdtimo = RDWAITC << sc->sc_errcnt; 1020 #ifdef DEBUG 1021 printf("%s: internal maintenance, %d second timeout\n", 1022 device_xname(sc->sc_dev), rdtimo); 1023 sc->sc_stats.rdtimeouts++; 1024 #endif 1025 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 1026 callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc); 1027 return 0; 1028 } 1029 /* 1030 * Only report error if we have reached the error reporting 1031 * threshhold. By default, this will only report after the 1032 * retry limit has been exceeded. 1033 */ 1034 if (sc->sc_errcnt < rderrthresh) 1035 return 1; 1036 1037 /* 1038 * First conjure up the block number at which the error occurred. 1039 * Note that not all errors report a block number, in that case 1040 * we just use b_blkno. 1041 */ 1042 bp = bufq_peek(sc->sc_tab); 1043 pbn = sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1044 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1045 (sp->c_ief & IEF_RRMASK)) { 1046 hwbn = RDBTOS(pbn + bp->b_blkno); 1047 pbn = bp->b_blkno; 1048 } else { 1049 hwbn = sp->c_blk; 1050 pbn = RDSTOB(hwbn) - pbn; 1051 } 1052 /* 1053 * Now output a generic message suitable for badsect. 1054 * Note that we don't use harderr cuz it just prints 1055 * out b_blkno which is just the beginning block number 1056 * of the transfer, not necessary where the error occurred. 1057 */ 1058 printf("%s%c: hard error sn%" PRId64 "\n", device_xname(sc->sc_dev), 1059 'a'+rdpart(bp->b_dev), pbn); 1060 /* 1061 * Now report the status as returned by the hardware with 1062 * attempt at interpretation (unless debugging). 1063 */ 1064 printf("%s %s error:", device_xname(sc->sc_dev), 1065 (bp->b_flags & B_READ) ? "read" : "write"); 1066 #ifdef DEBUG 1067 if (rddebug & RDB_ERROR) { 1068 /* status info */ 1069 printf("\n volume: %d, unit: %d\n", 1070 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1071 rdprinterr("reject", sp->c_ref, err_reject); 1072 rdprinterr("fault", sp->c_fef, err_fault); 1073 rdprinterr("access", sp->c_aef, err_access); 1074 rdprinterr("info", sp->c_ief, err_info); 1075 printf(" block: %lld, P1-P10: ", hwbn); 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 /* command */ 1080 printf(" ioc: "); 1081 printf("0x%x", *(u_int *)&sc->sc_ioc.c_pad); 1082 printf("0x%x", *(u_short *)&sc->sc_ioc.c_hiaddr); 1083 printf("0x%x", *(u_int *)&sc->sc_ioc.c_addr); 1084 printf("0x%x", *(u_short *)&sc->sc_ioc.c_nop2); 1085 printf("0x%x", *(u_int *)&sc->sc_ioc.c_len); 1086 printf("0x%x\n", *(u_short *)&sc->sc_ioc.c_cmd); 1087 return 1; 1088 } 1089 #endif 1090 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1091 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1092 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1093 printf("P1-P10: "); 1094 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1095 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1096 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1097 return 1; 1098 } 1099 1100 static int 1101 rdread(dev_t dev, struct uio *uio, int flags) 1102 { 1103 1104 return physio(rdstrategy, NULL, dev, B_READ, minphys, uio); 1105 } 1106 1107 static int 1108 rdwrite(dev_t dev, struct uio *uio, int flags) 1109 { 1110 1111 return physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio); 1112 } 1113 1114 static int 1115 rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1116 { 1117 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 1118 struct disklabel *lp = sc->sc_dkdev.dk_label; 1119 int error, flags; 1120 1121 error = disk_ioctl(&sc->sc_dkdev, rdpart(dev), cmd, data, flag, l); 1122 if (error != EPASSTHROUGH) 1123 return error; 1124 1125 switch (cmd) { 1126 case DIOCWLABEL: 1127 if ((flag & FWRITE) == 0) 1128 return EBADF; 1129 if (*(int *)data) 1130 sc->sc_flags |= RDF_WLABEL; 1131 else 1132 sc->sc_flags &= ~RDF_WLABEL; 1133 return 0; 1134 1135 case DIOCSDINFO: 1136 if ((flag & FWRITE) == 0) 1137 return EBADF; 1138 return setdisklabel(lp, (struct disklabel *)data, 1139 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1140 NULL); 1141 1142 case DIOCWDINFO: 1143 if ((flag & FWRITE) == 0) 1144 return EBADF; 1145 error = setdisklabel(lp, (struct disklabel *)data, 1146 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1147 NULL); 1148 if (error) 1149 return error; 1150 flags = sc->sc_flags; 1151 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1152 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 1153 sc->sc_flags = flags; 1154 return error; 1155 1156 case DIOCGDEFLABEL: 1157 rdgetdefaultlabel(sc, (struct disklabel *)data); 1158 return 0; 1159 } 1160 return EINVAL; 1161 } 1162 1163 static void 1164 rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp) 1165 { 1166 int type = sc->sc_type; 1167 1168 memset((void *)lp, 0, sizeof(struct disklabel)); 1169 1170 lp->d_type = DKTYPE_HPIB; 1171 lp->d_secsize = DEV_BSIZE; 1172 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1173 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1174 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1175 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1176 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1177 1178 strlcpy(lp->d_typename, rdidentinfo[type].ri_desc, 1179 sizeof(lp->d_typename)); 1180 strlcpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1181 lp->d_rpm = 3000; 1182 lp->d_interleave = 1; 1183 lp->d_flags = 0; 1184 1185 lp->d_partitions[RAW_PART].p_offset = 0; 1186 lp->d_partitions[RAW_PART].p_size = 1187 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1188 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1189 lp->d_npartitions = RAW_PART + 1; 1190 1191 lp->d_magic = DISKMAGIC; 1192 lp->d_magic2 = DISKMAGIC; 1193 lp->d_checksum = dkcksum(lp); 1194 } 1195 1196 int 1197 rdsize(dev_t dev) 1198 { 1199 struct rd_softc *sc; 1200 int psize, didopen = 0; 1201 1202 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1203 if (sc == NULL) 1204 return ENXIO; 1205 1206 if ((sc->sc_flags & RDF_ALIVE) == 0) 1207 return ENXIO; 1208 1209 /* 1210 * We get called very early on (via swapconf) 1211 * without the device being open so we may need 1212 * to handle it here. 1213 */ 1214 if (sc->sc_dkdev.dk_openmask == 0) { 1215 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1216 return -1; 1217 didopen = 1; 1218 } 1219 psize = sc->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1220 (sc->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1221 if (didopen) 1222 (void)rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1223 return psize; 1224 } 1225 1226 #ifdef DEBUG 1227 static void 1228 rdprinterr(const char *str, short err, const char **tab) 1229 { 1230 int i; 1231 int printed; 1232 1233 if (err == 0) 1234 return; 1235 printf(" %s error %d field:", str, err); 1236 printed = 0; 1237 for (i = 0; i < 16; i++) 1238 if (err & (0x8000 >> i)) 1239 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1240 printf("\n"); 1241 } 1242 #endif 1243 1244 static int rddoingadump; /* simple mutex */ 1245 1246 /* 1247 * Non-interrupt driven, non-DMA dump routine. 1248 */ 1249 static int 1250 rddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1251 { 1252 int sectorsize; /* size of a disk sector */ 1253 int nsects; /* number of sectors in partition */ 1254 int sectoff; /* sector offset of partition */ 1255 int totwrt; /* total number of sectors left to write */ 1256 int nwrt; /* current number of sectors to write */ 1257 int part; 1258 int ctlr, slave; 1259 struct rd_softc *sc; 1260 struct disklabel *lp; 1261 char stat; 1262 1263 /* Check for recursive dump; if so, punt. */ 1264 if (rddoingadump) 1265 return EFAULT; 1266 rddoingadump = 1; 1267 1268 /* Decompose unit and partition. */ 1269 part = rdpart(dev); 1270 1271 /* Make sure dump device is ok. */ 1272 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1273 if (sc == NULL) 1274 return ENXIO; 1275 1276 if ((sc->sc_flags & RDF_ALIVE) == 0) 1277 return ENXIO; 1278 1279 ctlr = device_unit(device_parent(sc->sc_dev)); 1280 slave = sc->sc_slave; 1281 1282 /* 1283 * Convert to disk sectors. Request must be a multiple of size. 1284 */ 1285 lp = sc->sc_dkdev.dk_label; 1286 sectorsize = lp->d_secsize; 1287 if ((size % sectorsize) != 0) 1288 return EFAULT; 1289 totwrt = size / sectorsize; 1290 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1291 1292 nsects = lp->d_partitions[part].p_size; 1293 sectoff = lp->d_partitions[part].p_offset; 1294 1295 /* Check transfer bounds against partition size. */ 1296 if ((blkno < 0) || (blkno + totwrt) > nsects) 1297 return EINVAL; 1298 1299 /* Offset block number to start of partition. */ 1300 blkno += sectoff; 1301 1302 while (totwrt > 0) { 1303 nwrt = totwrt; /* XXX */ 1304 #ifndef RD_DUMP_NOT_TRUSTED 1305 /* 1306 * Fill out and send HPIB command. 1307 */ 1308 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 1309 sc->sc_ioc.c_volume = C_SVOL(0); 1310 sc->sc_ioc.c_saddr = C_SADDR; 1311 sc->sc_ioc.c_hiaddr = 0; 1312 sc->sc_ioc.c_addr = RDBTOS(blkno); 1313 sc->sc_ioc.c_nop2 = C_NOP; 1314 sc->sc_ioc.c_slen = C_SLEN; 1315 sc->sc_ioc.c_len = nwrt * sectorsize; 1316 sc->sc_ioc.c_cmd = C_WRITE; 1317 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 1318 sizeof(sc->sc_ioc) - 2); 1319 if (hpibswait(ctlr, slave)) 1320 return EIO; 1321 1322 /* 1323 * Send the data. 1324 */ 1325 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1326 (void) hpibswait(ctlr, slave); 1327 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1328 if (stat) 1329 return EIO; 1330 #else /* RD_DUMP_NOT_TRUSTED */ 1331 /* Let's just talk about this first... */ 1332 printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev), 1333 va, blkno); 1334 delay(500 * 1000); /* half a second */ 1335 #endif /* RD_DUMP_NOT_TRUSTED */ 1336 1337 /* update block count */ 1338 totwrt -= nwrt; 1339 blkno += nwrt; 1340 va = (char *)va + sectorsize * nwrt; 1341 } 1342 rddoingadump = 0; 1343 return 0; 1344 } 1345