1 /* $NetBSD: rd.c,v 1.95 2014/03/24 19:42:58 christos 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 1.95 2014/03/24 19:42:58 christos 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 .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_flag = D_DISK 292 }; 293 294 const struct cdevsw rd_cdevsw = { 295 .d_open = rdopen, 296 .d_close = rdclose, 297 .d_read = rdread, 298 .d_write = rdwrite, 299 .d_ioctl = rdioctl, 300 .d_stop = nostop, 301 .d_tty = notty, 302 .d_poll = nopoll, 303 .d_mmap = nommap, 304 .d_kqfilter = nokqfilter, 305 .d_flag = D_DISK 306 }; 307 308 static int 309 rdmatch(device_t parent, cfdata_t cf, void *aux) 310 { 311 struct hpibbus_attach_args *ha = aux; 312 313 /* 314 * Set punit if operator specified one in the kernel 315 * configuration file. 316 */ 317 if (cf->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 318 cf->hpibbuscf_punit < HPIB_NPUNITS) 319 ha->ha_punit = cf->hpibbuscf_punit; 320 321 if (rdident(parent, NULL, ha) == 0) { 322 /* 323 * XXX Some aging HP-IB drives are slow to 324 * XXX respond; give them a chance to catch 325 * XXX up and probe them again. 326 */ 327 delay(10000); 328 ha->ha_id = hpibid(device_unit(parent), ha->ha_slave); 329 return rdident(parent, NULL, ha); 330 } 331 return 1; 332 } 333 334 static void 335 rdattach(device_t parent, device_t self, void *aux) 336 { 337 struct rd_softc *sc = device_private(self); 338 struct hpibbus_attach_args *ha = aux; 339 340 sc->sc_dev = self; 341 bufq_alloc(&sc->sc_tab, "disksort", BUFQ_SORT_RAWBLOCK); 342 343 if (rdident(parent, sc, ha) == 0) { 344 aprint_error(": didn't respond to describe command!\n"); 345 return; 346 } 347 348 /* 349 * Initialize and attach the disk structure. 350 */ 351 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 352 disk_init(&sc->sc_dkdev, device_xname(sc->sc_dev), NULL); 353 disk_attach(&sc->sc_dkdev); 354 355 sc->sc_slave = ha->ha_slave; 356 sc->sc_punit = ha->ha_punit; 357 358 callout_init(&sc->sc_restart_ch, 0); 359 360 /* Initialize the hpib job queue entry */ 361 sc->sc_hq.hq_softc = sc; 362 sc->sc_hq.hq_slave = sc->sc_slave; 363 sc->sc_hq.hq_start = rdstart; 364 sc->sc_hq.hq_go = rdgo; 365 sc->sc_hq.hq_intr = rdintr; 366 367 sc->sc_flags = RDF_ALIVE; 368 #ifdef DEBUG 369 /* always report errors */ 370 if (rddebug & RDB_ERROR) 371 rderrthresh = 0; 372 #endif 373 /* 374 * attach the device into the random source list 375 */ 376 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 377 RND_TYPE_DISK, 0); 378 } 379 380 static int 381 rdident(device_t parent, struct rd_softc *sc, struct hpibbus_attach_args *ha) 382 { 383 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 384 u_char stat, cmd[3]; 385 char name[7]; 386 int i, id, n, ctlr, slave; 387 388 ctlr = device_unit(parent); 389 slave = ha->ha_slave; 390 391 /* Verify that we have a CS80 device. */ 392 if ((ha->ha_id & 0x200) == 0) 393 return 0; 394 395 /* Is it one of the disks we support? */ 396 for (id = 0; id < numrdidentinfo; id++) 397 if (ha->ha_id == rdidentinfo[id].ri_hwid) 398 break; 399 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 400 return 0; 401 402 /* 403 * If we're just probing for the device, that's all the 404 * work we need to do. 405 */ 406 if (sc == NULL) 407 return 1; 408 409 /* 410 * Reset device and collect description 411 */ 412 rdreset(sc); 413 cmd[0] = C_SUNIT(ha->ha_punit); 414 cmd[1] = C_SVOL(0); 415 cmd[2] = C_DESC; 416 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 417 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 418 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 419 memset(name, 0, sizeof(name)); 420 if (stat == 0) { 421 n = desc->d_name; 422 for (i = 5; i >= 0; i--) { 423 name[i] = (n & 0xf) + '0'; 424 n >>= 4; 425 } 426 } 427 428 #ifdef DEBUG 429 if (rddebug & RDB_IDENT) { 430 aprint_debug("\n"); 431 aprint_debug_dev(sc->sc_dev, "name: %x ('%s')\n", 432 desc->d_name, name); 433 aprint_debug(" iuw %x, maxxfr %d, ctype %d\n", 434 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 435 aprint_debug(" utype %d, bps %d, blkbuf %d, burst %d," 436 " blktime %d\n", 437 desc->d_utype, desc->d_sectsize, 438 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 439 aprint_debug(" avxfr %d, ort %d, atp %d, maxint %d, fv %x" 440 ", rv %x\n", 441 desc->d_uavexfr, desc->d_retry, desc->d_access, 442 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 443 aprint_debug(" maxcyl/head/sect %d/%d/%d, maxvsect %d," 444 " inter %d\n", 445 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 446 desc->d_maxvsectl, desc->d_interleave); 447 aprint_normal("%s", device_xname(sc->sc_dev)); 448 } 449 #endif 450 451 /* 452 * Take care of a couple of anomolies: 453 * 1. 7945A and 7946A both return same HW id 454 * 2. 9122S and 9134D both return same HW id 455 * 3. 9122D and 9134L both return same HW id 456 */ 457 switch (ha->ha_id) { 458 case RD7946AID: 459 if (memcmp(name, "079450", 6) == 0) 460 id = RD7945A; 461 else 462 id = RD7946A; 463 break; 464 465 case RD9134LID: 466 if (memcmp(name, "091340", 6) == 0) 467 id = RD9134L; 468 else 469 id = RD9122D; 470 break; 471 472 case RD9134DID: 473 if (memcmp(name, "091220", 6) == 0) 474 id = RD9122S; 475 else 476 id = RD9134D; 477 break; 478 } 479 480 sc->sc_type = id; 481 482 /* 483 * XXX We use DEV_BSIZE instead of the sector size value pulled 484 * XXX off the driver because all of this code assumes 512 byte 485 * XXX blocks. ICK! 486 */ 487 aprint_normal(": %s\n", rdidentinfo[id].ri_desc); 488 aprint_normal_dev(sc->sc_dev, "%d cylinders, %d heads, %d blocks," 489 " %d bytes/block\n", 490 rdidentinfo[id].ri_ncyl, 491 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 492 DEV_BSIZE); 493 494 return 1; 495 } 496 497 static void 498 rdreset(struct rd_softc *sc) 499 { 500 int ctlr = device_unit(device_parent(sc->sc_dev)); 501 int slave = sc->sc_slave; 502 u_char stat; 503 504 sc->sc_clear.c_unit = C_SUNIT(sc->sc_punit); 505 sc->sc_clear.c_cmd = C_CLEAR; 506 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 507 hpibswait(ctlr, slave); 508 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 509 510 sc->sc_src.c_unit = C_SUNIT(RDCTLR); 511 sc->sc_src.c_nop = C_NOP; 512 sc->sc_src.c_cmd = C_SREL; 513 sc->sc_src.c_param = C_REL; 514 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 515 hpibswait(ctlr, slave); 516 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 517 518 sc->sc_ssmc.c_unit = C_SUNIT(sc->sc_punit); 519 sc->sc_ssmc.c_cmd = C_SSM; 520 sc->sc_ssmc.c_refm = REF_MASK; 521 sc->sc_ssmc.c_fefm = FEF_MASK; 522 sc->sc_ssmc.c_aefm = AEF_MASK; 523 sc->sc_ssmc.c_iefm = IEF_MASK; 524 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 525 hpibswait(ctlr, slave); 526 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 527 #ifdef DEBUG 528 sc->sc_stats.rdresets++; 529 #endif 530 } 531 532 /* 533 * Read or construct a disklabel 534 */ 535 static int 536 rdgetinfo(dev_t dev) 537 { 538 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 539 struct disklabel *lp = sc->sc_dkdev.dk_label; 540 struct partition *pi; 541 const char *msg; 542 543 /* 544 * Set some default values to use while reading the label 545 * or to use if there isn't a label. 546 */ 547 memset((void *)lp, 0, sizeof *lp); 548 rdgetdefaultlabel(sc, lp); 549 550 /* 551 * Now try to read the disklabel 552 */ 553 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 554 if (msg == NULL) 555 return 0; 556 557 pi = lp->d_partitions; 558 printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg); 559 560 pi[2].p_size = rdidentinfo[sc->sc_type].ri_nblocks; 561 /* XXX reset other info since readdisklabel screws with it */ 562 lp->d_npartitions = 3; 563 pi[0].p_size = 0; 564 565 return 0; 566 } 567 568 static int 569 rdopen(dev_t dev, int flags, int mode, struct lwp *l) 570 { 571 struct rd_softc *sc; 572 int error, mask, part; 573 574 sc = device_lookup_private(&rd_cd, rdunit(dev)); 575 if (sc == NULL) 576 return ENXIO; 577 578 if ((sc->sc_flags & RDF_ALIVE) == 0) 579 return ENXIO; 580 581 /* 582 * Wait for any pending opens/closes to complete 583 */ 584 while (sc->sc_flags & (RDF_OPENING|RDF_CLOSING)) 585 (void) tsleep(sc, PRIBIO, "rdopen", 0); 586 587 /* 588 * On first open, get label and partition info. 589 * We may block reading the label, so be careful 590 * to stop any other opens. 591 */ 592 if (sc->sc_dkdev.dk_openmask == 0) { 593 sc->sc_flags |= RDF_OPENING; 594 error = rdgetinfo(dev); 595 sc->sc_flags &= ~RDF_OPENING; 596 wakeup((void *)sc); 597 if (error) 598 return error; 599 } 600 601 part = rdpart(dev); 602 mask = 1 << part; 603 604 /* Check that the partition exists. */ 605 if (part != RAW_PART && 606 (part > sc->sc_dkdev.dk_label->d_npartitions || 607 sc->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 608 return ENXIO; 609 610 /* Ensure only one open at a time. */ 611 switch (mode) { 612 case S_IFCHR: 613 sc->sc_dkdev.dk_copenmask |= mask; 614 break; 615 case S_IFBLK: 616 sc->sc_dkdev.dk_bopenmask |= mask; 617 break; 618 } 619 sc->sc_dkdev.dk_openmask = 620 sc->sc_dkdev.dk_copenmask | sc->sc_dkdev.dk_bopenmask; 621 622 return 0; 623 } 624 625 static int 626 rdclose(dev_t dev, int flag, int mode, struct lwp *l) 627 { 628 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 629 struct disk *dk = &sc->sc_dkdev; 630 int mask, s; 631 632 mask = 1 << rdpart(dev); 633 if (mode == S_IFCHR) 634 dk->dk_copenmask &= ~mask; 635 else 636 dk->dk_bopenmask &= ~mask; 637 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 638 /* 639 * On last close, we wait for all activity to cease since 640 * the label/parition info will become invalid. Since we 641 * might sleep, we must block any opens while we are here. 642 * Note we don't have to about other closes since we know 643 * we are the last one. 644 */ 645 if (dk->dk_openmask == 0) { 646 sc->sc_flags |= RDF_CLOSING; 647 s = splbio(); 648 while (sc->sc_active) { 649 sc->sc_flags |= RDF_WANTED; 650 (void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0); 651 } 652 splx(s); 653 sc->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 654 wakeup((void *)sc); 655 } 656 return 0; 657 } 658 659 static void 660 rdstrategy(struct buf *bp) 661 { 662 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(bp->b_dev)); 663 struct partition *pinfo; 664 daddr_t bn; 665 int sz, s; 666 int offset; 667 668 #ifdef DEBUG 669 if (rddebug & RDB_FOLLOW) 670 printf("rdstrategy(%p): dev %"PRIx64", bn %llx, bcount %x, %c\n", 671 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 672 (bp->b_flags & B_READ) ? 'R' : 'W'); 673 #endif 674 bn = bp->b_blkno; 675 sz = howmany(bp->b_bcount, DEV_BSIZE); 676 pinfo = &sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 677 678 /* Don't perform partition translation on RAW_PART. */ 679 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 680 681 if (rdpart(bp->b_dev) != RAW_PART) { 682 /* 683 * XXX This block of code belongs in 684 * XXX bounds_check_with_label() 685 */ 686 687 if (bn < 0 || bn + sz > pinfo->p_size) { 688 sz = pinfo->p_size - bn; 689 if (sz == 0) { 690 bp->b_resid = bp->b_bcount; 691 goto done; 692 } 693 if (sz < 0) { 694 bp->b_error = EINVAL; 695 goto done; 696 } 697 bp->b_bcount = dbtob(sz); 698 } 699 /* 700 * Check for write to write protected label 701 */ 702 if (bn + offset <= LABELSECTOR && 703 #if LABELSECTOR != 0 704 bn + offset + sz > LABELSECTOR && 705 #endif 706 !(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) { 707 bp->b_error = EROFS; 708 goto done; 709 } 710 } 711 bp->b_rawblkno = bn + offset; 712 s = splbio(); 713 bufq_put(sc->sc_tab, bp); 714 if (sc->sc_active == 0) { 715 sc->sc_active = 1; 716 rdustart(sc); 717 } 718 splx(s); 719 return; 720 done: 721 biodone(bp); 722 } 723 724 /* 725 * Called from timeout() when handling maintenance releases 726 */ 727 static void 728 rdrestart(void *arg) 729 { 730 int s = splbio(); 731 rdustart((struct rd_softc *)arg); 732 splx(s); 733 } 734 735 static void 736 rdustart(struct rd_softc *sc) 737 { 738 struct buf *bp; 739 740 bp = bufq_peek(sc->sc_tab); 741 sc->sc_addr = bp->b_data; 742 sc->sc_resid = bp->b_bcount; 743 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 744 rdstart(sc); 745 } 746 747 static struct buf * 748 rdfinish(struct rd_softc *sc, struct buf *bp) 749 { 750 751 sc->sc_errcnt = 0; 752 (void)bufq_get(sc->sc_tab); 753 bp->b_resid = 0; 754 biodone(bp); 755 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 756 if ((bp = bufq_peek(sc->sc_tab)) != NULL) 757 return bp; 758 sc->sc_active = 0; 759 if (sc->sc_flags & RDF_WANTED) { 760 sc->sc_flags &= ~RDF_WANTED; 761 wakeup((void *)&sc->sc_tab); 762 } 763 return NULL; 764 } 765 766 static void 767 rdstart(void *arg) 768 { 769 struct rd_softc *sc = arg; 770 struct buf *bp = bufq_peek(sc->sc_tab); 771 int ctlr, slave; 772 773 ctlr = device_unit(device_parent(sc->sc_dev)); 774 slave = sc->sc_slave; 775 776 again: 777 #ifdef DEBUG 778 if (rddebug & RDB_FOLLOW) 779 printf("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp, 780 (bp->b_flags & B_READ) ? 'R' : 'W'); 781 #endif 782 sc->sc_flags |= RDF_SEEK; 783 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 784 sc->sc_ioc.c_volume = C_SVOL(0); 785 sc->sc_ioc.c_saddr = C_SADDR; 786 sc->sc_ioc.c_hiaddr = 0; 787 sc->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 788 sc->sc_ioc.c_nop2 = C_NOP; 789 sc->sc_ioc.c_slen = C_SLEN; 790 sc->sc_ioc.c_len = sc->sc_resid; 791 sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 792 #ifdef DEBUG 793 if (rddebug & RDB_IO) 794 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 795 ctlr, slave, C_CMD, 796 &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc) - 2); 797 #endif 798 if (hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 799 sizeof(sc->sc_ioc) - 2) == sizeof(sc->sc_ioc) - 2) { 800 801 /* Instrumentation. */ 802 disk_busy(&sc->sc_dkdev); 803 iostat_seek(sc->sc_dkdev.dk_stats); 804 805 #ifdef DEBUG 806 if (rddebug & RDB_IO) 807 printf("rdstart: hpibawait(%x)\n", ctlr); 808 #endif 809 hpibawait(ctlr); 810 return; 811 } 812 /* 813 * Experience has shown that the hpibwait in this hpibsend will 814 * occasionally timeout. It appears to occur mostly on old 7914 815 * drives with full maintenance tracks. We should probably 816 * integrate this with the backoff code in rderror. 817 */ 818 #ifdef DEBUG 819 if (rddebug & RDB_ERROR) 820 printf("%s: rdstart: cmd %x adr %lx blk %lld len %d ecnt %d\n", 821 device_xname(sc->sc_dev), 822 sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 823 bp->b_blkno, sc->sc_resid, sc->sc_errcnt); 824 sc->sc_stats.rdretries++; 825 #endif 826 sc->sc_flags &= ~RDF_SEEK; 827 rdreset(sc); 828 if (sc->sc_errcnt++ < RDRETRY) 829 goto again; 830 printf("%s: rdstart err: cmd 0x%x sect %ld blk %" PRId64 " len %d\n", 831 device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, 832 bp->b_blkno, sc->sc_resid); 833 bp->b_error = EIO; 834 bp = rdfinish(sc, bp); 835 if (bp) { 836 sc->sc_addr = bp->b_data; 837 sc->sc_resid = bp->b_bcount; 838 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 839 goto again; 840 } 841 } 842 843 static void 844 rdgo(void *arg) 845 { 846 struct rd_softc *sc = arg; 847 struct buf *bp = bufq_peek(sc->sc_tab); 848 int rw, ctlr, slave; 849 850 ctlr = device_unit(device_parent(sc->sc_dev)); 851 slave = sc->sc_slave; 852 853 rw = bp->b_flags & B_READ; 854 855 /* Instrumentation. */ 856 disk_busy(&sc->sc_dkdev); 857 858 #ifdef USELEDS 859 ledcontrol(0, 0, LED_DISK); 860 #endif 861 hpibgo(ctlr, slave, C_EXEC, sc->sc_addr, sc->sc_resid, rw, rw != 0); 862 } 863 864 /* ARGSUSED */ 865 static void 866 rdintr(void *arg) 867 { 868 struct rd_softc *sc = arg; 869 int unit = device_unit(sc->sc_dev); 870 struct buf *bp = bufq_peek(sc->sc_tab); 871 u_char stat = 13; /* in case hpibrecv fails */ 872 int rv, restart, ctlr, slave; 873 874 ctlr = device_unit(device_parent(sc->sc_dev)); 875 slave = sc->sc_slave; 876 877 #ifdef DEBUG 878 if (rddebug & RDB_FOLLOW) 879 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 880 (bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags); 881 if (bp == NULL) { 882 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 883 return; 884 } 885 #endif 886 disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid), 887 (bp->b_flags & B_READ)); 888 889 if (sc->sc_flags & RDF_SEEK) { 890 sc->sc_flags &= ~RDF_SEEK; 891 if (hpibustart(ctlr)) 892 rdgo(sc); 893 return; 894 } 895 if ((sc->sc_flags & RDF_SWAIT) == 0) { 896 #ifdef DEBUG 897 sc->sc_stats.rdpolltries++; 898 #endif 899 if (hpibpptest(ctlr, slave) == 0) { 900 #ifdef DEBUG 901 sc->sc_stats.rdpollwaits++; 902 #endif 903 904 /* Instrumentation. */ 905 disk_busy(&sc->sc_dkdev); 906 sc->sc_flags |= RDF_SWAIT; 907 hpibawait(ctlr); 908 return; 909 } 910 } else 911 sc->sc_flags &= ~RDF_SWAIT; 912 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 913 if (rv != 1 || stat) { 914 #ifdef DEBUG 915 if (rddebug & RDB_ERROR) 916 printf("rdintr: recv failed or bad stat %d\n", stat); 917 #endif 918 restart = rderror(unit); 919 #ifdef DEBUG 920 sc->sc_stats.rdretries++; 921 #endif 922 if (sc->sc_errcnt++ < RDRETRY) { 923 if (restart) 924 rdstart(sc); 925 return; 926 } 927 bp->b_error = EIO; 928 } 929 if (rdfinish(sc, bp)) 930 rdustart(sc); 931 rnd_add_uint32(&sc->rnd_source, bp->b_blkno); 932 } 933 934 static int 935 rdstatus(struct rd_softc *sc) 936 { 937 int c, s; 938 u_char stat; 939 int rv; 940 941 c = device_unit(device_parent(sc->sc_dev)); 942 s = sc->sc_slave; 943 sc->sc_rsc.c_unit = C_SUNIT(sc->sc_punit); 944 sc->sc_rsc.c_sram = C_SRAM; 945 sc->sc_rsc.c_ram = C_RAM; 946 sc->sc_rsc.c_cmd = C_STATUS; 947 memset((void *)&sc->sc_stat, 0, sizeof(sc->sc_stat)); 948 rv = hpibsend(c, s, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 949 if (rv != sizeof(sc->sc_rsc)) { 950 #ifdef DEBUG 951 if (rddebug & RDB_STATUS) 952 printf("rdstatus: send C_CMD failed %d != %d\n", 953 rv, sizeof(sc->sc_rsc)); 954 #endif 955 return 1; 956 } 957 rv = hpibrecv(c, s, C_EXEC, &sc->sc_stat, sizeof(sc->sc_stat)); 958 if (rv != sizeof(sc->sc_stat)) { 959 #ifdef DEBUG 960 if (rddebug & RDB_STATUS) 961 printf("rdstatus: send C_EXEC failed %d != %d\n", 962 rv, sizeof(sc->sc_stat)); 963 #endif 964 return 1; 965 } 966 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 967 if (rv != 1 || stat) { 968 #ifdef DEBUG 969 if (rddebug & RDB_STATUS) 970 printf("rdstatus: recv failed %d or bad stat %d\n", 971 rv, stat); 972 #endif 973 return 1; 974 } 975 return 0; 976 } 977 978 /* 979 * Deal with errors. 980 * Returns 1 if request should be restarted, 981 * 0 if we should just quietly give up. 982 */ 983 static int 984 rderror(int unit) 985 { 986 struct rd_softc *sc = device_lookup_private(&rd_cd,unit); 987 struct rd_stat *sp; 988 struct buf *bp; 989 daddr_t hwbn, pbn; 990 char *hexstr(int, int); /* XXX */ 991 992 if (rdstatus(sc)) { 993 #ifdef DEBUG 994 printf("%s: couldn't get status\n", device_xname(sc->sc_dev)); 995 #endif 996 rdreset(sc); 997 return 1; 998 } 999 sp = &sc->sc_stat; 1000 if (sp->c_fef & FEF_REXMT) 1001 return 1; 1002 if (sp->c_fef & FEF_PF) { 1003 rdreset(sc); 1004 return 1; 1005 } 1006 /* 1007 * Unit requests release for internal maintenance. 1008 * We just delay awhile and try again later. Use expontially 1009 * increasing backoff ala ethernet drivers since we don't really 1010 * know how long the maintenance will take. With RDWAITC and 1011 * RDRETRY as defined, the range is 1 to 32 seconds. 1012 */ 1013 if (sp->c_fef & FEF_IMR) { 1014 extern int hz; 1015 int rdtimo = RDWAITC << sc->sc_errcnt; 1016 #ifdef DEBUG 1017 printf("%s: internal maintenance, %d second timeout\n", 1018 device_xname(sc->sc_dev), rdtimo); 1019 sc->sc_stats.rdtimeouts++; 1020 #endif 1021 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 1022 callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc); 1023 return 0; 1024 } 1025 /* 1026 * Only report error if we have reached the error reporting 1027 * threshhold. By default, this will only report after the 1028 * retry limit has been exceeded. 1029 */ 1030 if (sc->sc_errcnt < rderrthresh) 1031 return 1; 1032 1033 /* 1034 * First conjure up the block number at which the error occurred. 1035 * Note that not all errors report a block number, in that case 1036 * we just use b_blkno. 1037 */ 1038 bp = bufq_peek(sc->sc_tab); 1039 pbn = sc->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1040 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1041 (sp->c_ief & IEF_RRMASK)) { 1042 hwbn = RDBTOS(pbn + bp->b_blkno); 1043 pbn = bp->b_blkno; 1044 } else { 1045 hwbn = sp->c_blk; 1046 pbn = RDSTOB(hwbn) - pbn; 1047 } 1048 /* 1049 * Now output a generic message suitable for badsect. 1050 * Note that we don't use harderr cuz it just prints 1051 * out b_blkno which is just the beginning block number 1052 * of the transfer, not necessary where the error occurred. 1053 */ 1054 printf("%s%c: hard error sn%" PRId64 "\n", device_xname(sc->sc_dev), 1055 'a'+rdpart(bp->b_dev), pbn); 1056 /* 1057 * Now report the status as returned by the hardware with 1058 * attempt at interpretation (unless debugging). 1059 */ 1060 printf("%s %s error:", device_xname(sc->sc_dev), 1061 (bp->b_flags & B_READ) ? "read" : "write"); 1062 #ifdef DEBUG 1063 if (rddebug & RDB_ERROR) { 1064 /* status info */ 1065 printf("\n volume: %d, unit: %d\n", 1066 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1067 rdprinterr("reject", sp->c_ref, err_reject); 1068 rdprinterr("fault", sp->c_fef, err_fault); 1069 rdprinterr("access", sp->c_aef, err_access); 1070 rdprinterr("info", sp->c_ief, err_info); 1071 printf(" block: %lld, P1-P10: ", hwbn); 1072 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1073 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1074 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1075 /* command */ 1076 printf(" ioc: "); 1077 printf("0x%x", *(u_int *)&sc->sc_ioc.c_pad); 1078 printf("0x%x", *(u_short *)&sc->sc_ioc.c_hiaddr); 1079 printf("0x%x", *(u_int *)&sc->sc_ioc.c_addr); 1080 printf("0x%x", *(u_short *)&sc->sc_ioc.c_nop2); 1081 printf("0x%x", *(u_int *)&sc->sc_ioc.c_len); 1082 printf("0x%x\n", *(u_short *)&sc->sc_ioc.c_cmd); 1083 return 1; 1084 } 1085 #endif 1086 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1087 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1088 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1089 printf("P1-P10: "); 1090 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1091 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1092 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1093 return 1; 1094 } 1095 1096 static int 1097 rdread(dev_t dev, struct uio *uio, int flags) 1098 { 1099 1100 return physio(rdstrategy, NULL, dev, B_READ, minphys, uio); 1101 } 1102 1103 static int 1104 rdwrite(dev_t dev, struct uio *uio, int flags) 1105 { 1106 1107 return physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio); 1108 } 1109 1110 static int 1111 rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1112 { 1113 struct rd_softc *sc = device_lookup_private(&rd_cd, rdunit(dev)); 1114 struct disklabel *lp = sc->sc_dkdev.dk_label; 1115 int error, flags; 1116 1117 switch (cmd) { 1118 case DIOCGDINFO: 1119 *(struct disklabel *)data = *lp; 1120 return 0; 1121 1122 case DIOCGPART: 1123 ((struct partinfo *)data)->disklab = lp; 1124 ((struct partinfo *)data)->part = 1125 &lp->d_partitions[rdpart(dev)]; 1126 return 0; 1127 1128 case DIOCWLABEL: 1129 if ((flag & FWRITE) == 0) 1130 return EBADF; 1131 if (*(int *)data) 1132 sc->sc_flags |= RDF_WLABEL; 1133 else 1134 sc->sc_flags &= ~RDF_WLABEL; 1135 return 0; 1136 1137 case DIOCSDINFO: 1138 if ((flag & FWRITE) == 0) 1139 return EBADF; 1140 return setdisklabel(lp, (struct disklabel *)data, 1141 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1142 NULL); 1143 1144 case DIOCWDINFO: 1145 if ((flag & FWRITE) == 0) 1146 return EBADF; 1147 error = setdisklabel(lp, (struct disklabel *)data, 1148 (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dkdev.dk_openmask, 1149 NULL); 1150 if (error) 1151 return error; 1152 flags = sc->sc_flags; 1153 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1154 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 1155 sc->sc_flags = flags; 1156 return error; 1157 1158 case DIOCGDEFLABEL: 1159 rdgetdefaultlabel(sc, (struct disklabel *)data); 1160 return 0; 1161 } 1162 return EINVAL; 1163 } 1164 1165 static void 1166 rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp) 1167 { 1168 int type = sc->sc_type; 1169 1170 memset((void *)lp, 0, sizeof(struct disklabel)); 1171 1172 lp->d_type = DTYPE_HPIB; 1173 lp->d_secsize = DEV_BSIZE; 1174 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1175 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1176 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1177 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1178 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1179 1180 strlcpy(lp->d_typename, rdidentinfo[type].ri_desc, 1181 sizeof(lp->d_typename)); 1182 strlcpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1183 lp->d_rpm = 3000; 1184 lp->d_interleave = 1; 1185 lp->d_flags = 0; 1186 1187 lp->d_partitions[RAW_PART].p_offset = 0; 1188 lp->d_partitions[RAW_PART].p_size = 1189 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1190 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1191 lp->d_npartitions = RAW_PART + 1; 1192 1193 lp->d_magic = DISKMAGIC; 1194 lp->d_magic2 = DISKMAGIC; 1195 lp->d_checksum = dkcksum(lp); 1196 } 1197 1198 int 1199 rdsize(dev_t dev) 1200 { 1201 struct rd_softc *sc; 1202 int psize, didopen = 0; 1203 1204 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1205 if (sc == NULL) 1206 return ENXIO; 1207 1208 if ((sc->sc_flags & RDF_ALIVE) == 0) 1209 return ENXIO; 1210 1211 /* 1212 * We get called very early on (via swapconf) 1213 * without the device being open so we may need 1214 * to handle it here. 1215 */ 1216 if (sc->sc_dkdev.dk_openmask == 0) { 1217 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1218 return -1; 1219 didopen = 1; 1220 } 1221 psize = sc->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1222 (sc->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1223 if (didopen) 1224 (void)rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1225 return psize; 1226 } 1227 1228 #ifdef DEBUG 1229 static void 1230 rdprinterr(const char *str, short err, const char **tab) 1231 { 1232 int i; 1233 int printed; 1234 1235 if (err == 0) 1236 return; 1237 printf(" %s error %d field:", str, err); 1238 printed = 0; 1239 for (i = 0; i < 16; i++) 1240 if (err & (0x8000 >> i)) 1241 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1242 printf("\n"); 1243 } 1244 #endif 1245 1246 static int rddoingadump; /* simple mutex */ 1247 1248 /* 1249 * Non-interrupt driven, non-DMA dump routine. 1250 */ 1251 static int 1252 rddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1253 { 1254 int sectorsize; /* size of a disk sector */ 1255 int nsects; /* number of sectors in partition */ 1256 int sectoff; /* sector offset of partition */ 1257 int totwrt; /* total number of sectors left to write */ 1258 int nwrt; /* current number of sectors to write */ 1259 int part; 1260 int ctlr, slave; 1261 struct rd_softc *sc; 1262 struct disklabel *lp; 1263 char stat; 1264 1265 /* Check for recursive dump; if so, punt. */ 1266 if (rddoingadump) 1267 return EFAULT; 1268 rddoingadump = 1; 1269 1270 /* Decompose unit and partition. */ 1271 part = rdpart(dev); 1272 1273 /* Make sure dump device is ok. */ 1274 sc = device_lookup_private(&rd_cd, rdunit(dev)); 1275 if (sc == NULL) 1276 return ENXIO; 1277 1278 if ((sc->sc_flags & RDF_ALIVE) == 0) 1279 return ENXIO; 1280 1281 ctlr = device_unit(device_parent(sc->sc_dev)); 1282 slave = sc->sc_slave; 1283 1284 /* 1285 * Convert to disk sectors. Request must be a multiple of size. 1286 */ 1287 lp = sc->sc_dkdev.dk_label; 1288 sectorsize = lp->d_secsize; 1289 if ((size % sectorsize) != 0) 1290 return EFAULT; 1291 totwrt = size / sectorsize; 1292 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1293 1294 nsects = lp->d_partitions[part].p_size; 1295 sectoff = lp->d_partitions[part].p_offset; 1296 1297 /* Check transfer bounds against partition size. */ 1298 if ((blkno < 0) || (blkno + totwrt) > nsects) 1299 return EINVAL; 1300 1301 /* Offset block number to start of partition. */ 1302 blkno += sectoff; 1303 1304 while (totwrt > 0) { 1305 nwrt = totwrt; /* XXX */ 1306 #ifndef RD_DUMP_NOT_TRUSTED 1307 /* 1308 * Fill out and send HPIB command. 1309 */ 1310 sc->sc_ioc.c_unit = C_SUNIT(sc->sc_punit); 1311 sc->sc_ioc.c_volume = C_SVOL(0); 1312 sc->sc_ioc.c_saddr = C_SADDR; 1313 sc->sc_ioc.c_hiaddr = 0; 1314 sc->sc_ioc.c_addr = RDBTOS(blkno); 1315 sc->sc_ioc.c_nop2 = C_NOP; 1316 sc->sc_ioc.c_slen = C_SLEN; 1317 sc->sc_ioc.c_len = nwrt * sectorsize; 1318 sc->sc_ioc.c_cmd = C_WRITE; 1319 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc.c_unit, 1320 sizeof(sc->sc_ioc) - 2); 1321 if (hpibswait(ctlr, slave)) 1322 return EIO; 1323 1324 /* 1325 * Send the data. 1326 */ 1327 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1328 (void) hpibswait(ctlr, slave); 1329 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1330 if (stat) 1331 return EIO; 1332 #else /* RD_DUMP_NOT_TRUSTED */ 1333 /* Let's just talk about this first... */ 1334 printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev), 1335 va, blkno); 1336 delay(500 * 1000); /* half a second */ 1337 #endif /* RD_DUMP_NOT_TRUSTED */ 1338 1339 /* update block count */ 1340 totwrt -= nwrt; 1341 blkno += nwrt; 1342 va = (char *)va + sectorsize * nwrt; 1343 } 1344 rddoingadump = 0; 1345 return 0; 1346 } 1347