1 /* $NetBSD: rd.c,v 1.53 2002/10/02 05:15:54 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * Copyright (c) 1982, 1990, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * the Systems Programming Group of the University of Utah Computer 46 * Science Department. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 77 * 78 * @(#)rd.c 8.2 (Berkeley) 5/19/94 79 */ 80 81 /* 82 * CS80/SS80 disk driver 83 */ 84 85 #include <sys/cdefs.h> 86 __KERNEL_RCSID(0, "$NetBSD: rd.c,v 1.53 2002/10/02 05:15:54 thorpej Exp $"); 87 88 #include "opt_useleds.h" 89 #include "rnd.h" 90 91 #include <sys/param.h> 92 #include <sys/systm.h> 93 #include <sys/buf.h> 94 #include <sys/conf.h> 95 #include <sys/device.h> 96 #include <sys/disk.h> 97 #include <sys/disklabel.h> 98 #include <sys/fcntl.h> 99 #include <sys/ioctl.h> 100 #include <sys/proc.h> 101 #include <sys/stat.h> 102 103 #if NRND > 0 104 #include <sys/rnd.h> 105 #endif 106 107 #include <hp300/dev/hpibvar.h> 108 109 #include <hp300/dev/rdreg.h> 110 #include <hp300/dev/rdvar.h> 111 112 #ifdef USELEDS 113 #include <hp300/hp300/leds.h> 114 #endif 115 116 int rderrthresh = RDRETRY-1; /* when to start reporting errors */ 117 118 #ifdef DEBUG 119 /* error message tables */ 120 char *err_reject[] = { 121 0, 0, 122 "channel parity error", /* 0x2000 */ 123 0, 0, 124 "illegal opcode", /* 0x0400 */ 125 "module addressing", /* 0x0200 */ 126 "address bounds", /* 0x0100 */ 127 "parameter bounds", /* 0x0080 */ 128 "illegal parameter", /* 0x0040 */ 129 "message sequence", /* 0x0020 */ 130 0, 131 "message length", /* 0x0008 */ 132 0, 0, 0 133 }; 134 135 char *err_fault[] = { 136 0, 137 "cross unit", /* 0x4000 */ 138 0, 139 "controller fault", /* 0x1000 */ 140 0, 0, 141 "unit fault", /* 0x0200 */ 142 0, 143 "diagnostic result", /* 0x0080 */ 144 0, 145 "operator release request", /* 0x0020 */ 146 "diagnostic release request", /* 0x0010 */ 147 "internal maintenance release request", /* 0x0008 */ 148 0, 149 "power fail", /* 0x0002 */ 150 "retransmit" /* 0x0001 */ 151 }; 152 153 char *err_access[] = { 154 "illegal parallel operation", /* 0x8000 */ 155 "uninitialized media", /* 0x4000 */ 156 "no spares available", /* 0x2000 */ 157 "not ready", /* 0x1000 */ 158 "write protect", /* 0x0800 */ 159 "no data found", /* 0x0400 */ 160 0, 0, 161 "unrecoverable data overflow", /* 0x0080 */ 162 "unrecoverable data", /* 0x0040 */ 163 0, 164 "end of file", /* 0x0010 */ 165 "end of volume", /* 0x0008 */ 166 0, 0, 0 167 }; 168 169 char *err_info[] = { 170 "operator release request", /* 0x8000 */ 171 "diagnostic release request", /* 0x4000 */ 172 "internal maintenance release request", /* 0x2000 */ 173 "media wear", /* 0x1000 */ 174 "latency induced", /* 0x0800 */ 175 0, 0, 176 "auto sparing invoked", /* 0x0100 */ 177 0, 178 "recoverable data overflow", /* 0x0040 */ 179 "marginal data", /* 0x0020 */ 180 "recoverable data", /* 0x0010 */ 181 0, 182 "maintenance track overflow", /* 0x0004 */ 183 0, 0 184 }; 185 186 int rddebug = 0x80; 187 #define RDB_FOLLOW 0x01 188 #define RDB_STATUS 0x02 189 #define RDB_IDENT 0x04 190 #define RDB_IO 0x08 191 #define RDB_ASYNC 0x10 192 #define RDB_ERROR 0x80 193 #endif 194 195 /* 196 * Misc. HW description, indexed by sc_type. 197 * Nothing really critical here, could do without it. 198 */ 199 struct rdidentinfo rdidentinfo[] = { 200 { RD7946AID, 0, "7945A", NRD7945ABPT, 201 NRD7945ATRK, 968, 108416 }, 202 203 { RD9134DID, 1, "9134D", NRD9134DBPT, 204 NRD9134DTRK, 303, 29088 }, 205 206 { RD9134LID, 1, "9122S", NRD9122SBPT, 207 NRD9122STRK, 77, 1232 }, 208 209 { RD7912PID, 0, "7912P", NRD7912PBPT, 210 NRD7912PTRK, 572, 128128 }, 211 212 { RD7914PID, 0, "7914P", NRD7914PBPT, 213 NRD7914PTRK, 1152, 258048 }, 214 215 { RD7958AID, 0, "7958A", NRD7958ABPT, 216 NRD7958ATRK, 1013, 255276 }, 217 218 { RD7957AID, 0, "7957A", NRD7957ABPT, 219 NRD7957ATRK, 1036, 159544 }, 220 221 { RD7933HID, 0, "7933H", NRD7933HBPT, 222 NRD7933HTRK, 1321, 789958 }, 223 224 { RD9134LID, 1, "9134L", NRD9134LBPT, 225 NRD9134LTRK, 973, 77840 }, 226 227 { RD7936HID, 0, "7936H", NRD7936HBPT, 228 NRD7936HTRK, 698, 600978 }, 229 230 { RD7937HID, 0, "7937H", NRD7937HBPT, 231 NRD7937HTRK, 698, 1116102 }, 232 233 { RD7914CTID, 0, "7914CT", NRD7914PBPT, 234 NRD7914PTRK, 1152, 258048 }, 235 236 { RD7946AID, 0, "7946A", NRD7945ABPT, 237 NRD7945ATRK, 968, 108416 }, 238 239 { RD9134LID, 1, "9122D", NRD9122SBPT, 240 NRD9122STRK, 77, 1232 }, 241 242 { RD7957BID, 0, "7957B", NRD7957BBPT, 243 NRD7957BTRK, 1269, 159894 }, 244 245 { RD7958BID, 0, "7958B", NRD7958BBPT, 246 NRD7958BTRK, 786, 297108 }, 247 248 { RD7959BID, 0, "7959B", NRD7959BBPT, 249 NRD7959BTRK, 1572, 594216 }, 250 251 { RD2200AID, 0, "2200A", NRD2200ABPT, 252 NRD2200ATRK, 1449, 654948 }, 253 254 { RD2203AID, 0, "2203A", NRD2203ABPT, 255 NRD2203ATRK, 1449, 1309896 } 256 }; 257 int numrdidentinfo = sizeof(rdidentinfo) / sizeof(rdidentinfo[0]); 258 259 int rdident __P((struct device *, struct rd_softc *, 260 struct hpibbus_attach_args *)); 261 void rdreset __P((struct rd_softc *)); 262 void rdustart __P((struct rd_softc *)); 263 int rdgetinfo __P((dev_t)); 264 void rdrestart __P((void *)); 265 struct buf *rdfinish __P((struct rd_softc *, struct buf *)); 266 267 void rdgetdefaultlabel __P((struct rd_softc *, struct disklabel *)); 268 void rdrestart __P((void *)); 269 void rdustart __P((struct rd_softc *)); 270 struct buf *rdfinish __P((struct rd_softc *, struct buf *)); 271 void rdstart __P((void *)); 272 void rdgo __P((void *)); 273 void rdintr __P((void *)); 274 int rdstatus __P((struct rd_softc *)); 275 int rderror __P((int)); 276 #ifdef DEBUG 277 void rdprinterr __P((char *, short, char **)); 278 #endif 279 280 int rdmatch __P((struct device *, struct cfdata *, void *)); 281 void rdattach __P((struct device *, struct device *, void *)); 282 283 CFATTACH_DECL(rd, sizeof(struct rd_softc), 284 rdmatch, rdattach, NULL, NULL); 285 286 extern struct cfdriver rd_cd; 287 288 dev_type_open(rdopen); 289 dev_type_close(rdclose); 290 dev_type_read(rdread); 291 dev_type_write(rdwrite); 292 dev_type_ioctl(rdioctl); 293 dev_type_strategy(rdstrategy); 294 dev_type_dump(rddump); 295 dev_type_size(rdsize); 296 297 const struct bdevsw rd_bdevsw = { 298 rdopen, rdclose, rdstrategy, rdioctl, rddump, rdsize, D_DISK 299 }; 300 301 const struct cdevsw rd_cdevsw = { 302 rdopen, rdclose, rdread, rdwrite, rdioctl, 303 nostop, notty, nopoll, nommap, D_DISK 304 }; 305 306 int 307 rdmatch(parent, match, aux) 308 struct device *parent; 309 struct cfdata *match; 310 void *aux; 311 { 312 struct hpibbus_attach_args *ha = aux; 313 314 /* 315 * Set punit if operator specified one in the kernel 316 * configuration file. 317 */ 318 if (match->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 319 match->hpibbuscf_punit < HPIB_NPUNITS) 320 ha->ha_punit = match->hpibbuscf_punit; 321 322 if (rdident(parent, NULL, ha) == 0) { 323 /* 324 * XXX Some aging HP-IB drives are slow to 325 * XXX respond; give them a chance to catch 326 * XXX up and probe them again. 327 */ 328 delay(10000); 329 ha->ha_id = hpibid(parent->dv_unit, ha->ha_slave); 330 return (rdident(parent, NULL, ha)); 331 } 332 return (1); 333 } 334 335 void 336 rdattach(parent, self, aux) 337 struct device *parent, *self; 338 void *aux; 339 { 340 struct rd_softc *sc = (struct rd_softc *)self; 341 struct hpibbus_attach_args *ha = aux; 342 343 bufq_alloc(&sc->sc_tab, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 344 345 if (rdident(parent, sc, ha) == 0) { 346 printf("\n%s: didn't respond to describe command!\n", 347 sc->sc_dev.dv_xname); 348 return; 349 } 350 351 /* 352 * Initialize and attach the disk structure. 353 */ 354 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 355 sc->sc_dkdev.dk_name = sc->sc_dev.dv_xname; 356 disk_attach(&sc->sc_dkdev); 357 358 sc->sc_slave = ha->ha_slave; 359 sc->sc_punit = ha->ha_punit; 360 361 callout_init(&sc->sc_restart_ch); 362 363 /* Initialize the hpib job queue entry */ 364 sc->sc_hq.hq_softc = sc; 365 sc->sc_hq.hq_slave = sc->sc_slave; 366 sc->sc_hq.hq_start = rdstart; 367 sc->sc_hq.hq_go = rdgo; 368 sc->sc_hq.hq_intr = rdintr; 369 370 sc->sc_flags = RDF_ALIVE; 371 #ifdef DEBUG 372 /* always report errors */ 373 if (rddebug & RDB_ERROR) 374 rderrthresh = 0; 375 #endif 376 #if NRND > 0 377 /* 378 * attach the device into the random source list 379 */ 380 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 381 RND_TYPE_DISK, 0); 382 #endif 383 } 384 385 int 386 rdident(parent, sc, ha) 387 struct device *parent; 388 struct rd_softc *sc; 389 struct hpibbus_attach_args *ha; 390 { 391 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 392 u_char stat, cmd[3]; 393 char name[7]; 394 int i, id, n, ctlr, slave; 395 396 ctlr = parent->dv_unit; 397 slave = ha->ha_slave; 398 399 /* Verify that we have a CS80 device. */ 400 if ((ha->ha_id & 0x200) == 0) 401 return (0); 402 403 /* Is it one of the disks we support? */ 404 for (id = 0; id < numrdidentinfo; id++) 405 if (ha->ha_id == rdidentinfo[id].ri_hwid) 406 break; 407 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 408 return (0); 409 410 /* 411 * If we're just probing for the device, that's all the 412 * work we need to do. 413 */ 414 if (sc == NULL) 415 return (1); 416 417 /* 418 * Reset device and collect description 419 */ 420 rdreset(sc); 421 cmd[0] = C_SUNIT(ha->ha_punit); 422 cmd[1] = C_SVOL(0); 423 cmd[2] = C_DESC; 424 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 425 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 426 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 427 memset(name, 0, sizeof(name)); 428 if (stat == 0) { 429 n = desc->d_name; 430 for (i = 5; i >= 0; i--) { 431 name[i] = (n & 0xf) + '0'; 432 n >>= 4; 433 } 434 } 435 436 #ifdef DEBUG 437 if (rddebug & RDB_IDENT) { 438 printf("\n%s: name: %x ('%s')\n", 439 sc->sc_dev.dv_xname, desc->d_name, name); 440 printf(" iuw %x, maxxfr %d, ctype %d\n", 441 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 442 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 443 desc->d_utype, desc->d_sectsize, 444 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 445 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 446 desc->d_uavexfr, desc->d_retry, desc->d_access, 447 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 448 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 449 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 450 desc->d_maxvsectl, desc->d_interleave); 451 printf("%s", sc->sc_dev.dv_xname); 452 } 453 #endif 454 455 /* 456 * Take care of a couple of anomolies: 457 * 1. 7945A and 7946A both return same HW id 458 * 2. 9122S and 9134D both return same HW id 459 * 3. 9122D and 9134L both return same HW id 460 */ 461 switch (ha->ha_id) { 462 case RD7946AID: 463 if (memcmp(name, "079450", 6) == 0) 464 id = RD7945A; 465 else 466 id = RD7946A; 467 break; 468 469 case RD9134LID: 470 if (memcmp(name, "091340", 6) == 0) 471 id = RD9134L; 472 else 473 id = RD9122D; 474 break; 475 476 case RD9134DID: 477 if (memcmp(name, "091220", 6) == 0) 478 id = RD9122S; 479 else 480 id = RD9134D; 481 break; 482 } 483 484 sc->sc_type = id; 485 486 /* 487 * XXX We use DEV_BSIZE instead of the sector size value pulled 488 * XXX off the driver because all of this code assumes 512 byte 489 * XXX blocks. ICK! 490 */ 491 printf(": %s\n", rdidentinfo[id].ri_desc); 492 printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", 493 sc->sc_dev.dv_xname, rdidentinfo[id].ri_ncyl, 494 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 495 DEV_BSIZE); 496 497 return (1); 498 } 499 500 void 501 rdreset(rs) 502 struct rd_softc *rs; 503 { 504 int ctlr = rs->sc_dev.dv_parent->dv_unit; 505 int slave = rs->sc_slave; 506 u_char stat; 507 508 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 509 rs->sc_clear.c_cmd = C_CLEAR; 510 hpibsend(ctlr, slave, C_TCMD, &rs->sc_clear, sizeof(rs->sc_clear)); 511 hpibswait(ctlr, slave); 512 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 513 514 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 515 rs->sc_src.c_nop = C_NOP; 516 rs->sc_src.c_cmd = C_SREL; 517 rs->sc_src.c_param = C_REL; 518 hpibsend(ctlr, slave, C_CMD, &rs->sc_src, sizeof(rs->sc_src)); 519 hpibswait(ctlr, slave); 520 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 521 522 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 523 rs->sc_ssmc.c_cmd = C_SSM; 524 rs->sc_ssmc.c_refm = REF_MASK; 525 rs->sc_ssmc.c_fefm = FEF_MASK; 526 rs->sc_ssmc.c_aefm = AEF_MASK; 527 rs->sc_ssmc.c_iefm = IEF_MASK; 528 hpibsend(ctlr, slave, C_CMD, &rs->sc_ssmc, sizeof(rs->sc_ssmc)); 529 hpibswait(ctlr, slave); 530 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 531 #ifdef DEBUG 532 rs->sc_stats.rdresets++; 533 #endif 534 } 535 536 /* 537 * Read or constuct a disklabel 538 */ 539 int 540 rdgetinfo(dev) 541 dev_t dev; 542 { 543 int unit = rdunit(dev); 544 struct rd_softc *rs = rd_cd.cd_devs[unit]; 545 struct disklabel *lp = rs->sc_dkdev.dk_label; 546 struct partition *pi; 547 char *msg; 548 549 /* 550 * Set some default values to use while reading the label 551 * or to use if there isn't a label. 552 */ 553 memset((caddr_t)lp, 0, sizeof *lp); 554 rdgetdefaultlabel(rs, lp); 555 556 /* 557 * Now try to read the disklabel 558 */ 559 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 560 if (msg == NULL) 561 return (0); 562 563 pi = lp->d_partitions; 564 printf("%s: WARNING: %s, ", rs->sc_dev.dv_xname, msg); 565 #ifdef COMPAT_NOLABEL 566 printf("using old default partitioning\n"); 567 rdmakedisklabel(unit, lp); 568 #else 569 printf("defining `c' partition as entire disk\n"); 570 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 571 /* XXX reset other info since readdisklabel screws with it */ 572 lp->d_npartitions = 3; 573 pi[0].p_size = 0; 574 #endif 575 return(0); 576 } 577 578 int 579 rdopen(dev, flags, mode, p) 580 dev_t dev; 581 int flags, mode; 582 struct proc *p; 583 { 584 int unit = rdunit(dev); 585 struct rd_softc *rs; 586 int error, mask, part; 587 588 if (unit >= rd_cd.cd_ndevs || 589 (rs = rd_cd.cd_devs[unit]) == NULL || 590 (rs->sc_flags & RDF_ALIVE) == 0) 591 return (ENXIO); 592 593 /* 594 * Wait for any pending opens/closes to complete 595 */ 596 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 597 (void) tsleep(rs, PRIBIO, "rdopen", 0); 598 599 /* 600 * On first open, get label and partition info. 601 * We may block reading the label, so be careful 602 * to stop any other opens. 603 */ 604 if (rs->sc_dkdev.dk_openmask == 0) { 605 rs->sc_flags |= RDF_OPENING; 606 error = rdgetinfo(dev); 607 rs->sc_flags &= ~RDF_OPENING; 608 wakeup((caddr_t)rs); 609 if (error) 610 return(error); 611 } 612 613 part = rdpart(dev); 614 mask = 1 << part; 615 616 /* Check that the partition exists. */ 617 if (part != RAW_PART && 618 (part > rs->sc_dkdev.dk_label->d_npartitions || 619 rs->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 620 return (ENXIO); 621 622 /* Ensure only one open at a time. */ 623 switch (mode) { 624 case S_IFCHR: 625 rs->sc_dkdev.dk_copenmask |= mask; 626 break; 627 case S_IFBLK: 628 rs->sc_dkdev.dk_bopenmask |= mask; 629 break; 630 } 631 rs->sc_dkdev.dk_openmask = 632 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 633 634 return(0); 635 } 636 637 int 638 rdclose(dev, flag, mode, p) 639 dev_t dev; 640 int flag, mode; 641 struct proc *p; 642 { 643 int unit = rdunit(dev); 644 struct rd_softc *rs = rd_cd.cd_devs[unit]; 645 struct disk *dk = &rs->sc_dkdev; 646 int mask, s; 647 648 mask = 1 << rdpart(dev); 649 if (mode == S_IFCHR) 650 dk->dk_copenmask &= ~mask; 651 else 652 dk->dk_bopenmask &= ~mask; 653 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 654 /* 655 * On last close, we wait for all activity to cease since 656 * the label/parition info will become invalid. Since we 657 * might sleep, we must block any opens while we are here. 658 * Note we don't have to about other closes since we know 659 * we are the last one. 660 */ 661 if (dk->dk_openmask == 0) { 662 rs->sc_flags |= RDF_CLOSING; 663 s = splbio(); 664 while (rs->sc_active) { 665 rs->sc_flags |= RDF_WANTED; 666 (void) tsleep(&rs->sc_tab, PRIBIO, "rdclose", 0); 667 } 668 splx(s); 669 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 670 wakeup((caddr_t)rs); 671 } 672 return(0); 673 } 674 675 void 676 rdstrategy(bp) 677 struct buf *bp; 678 { 679 int unit = rdunit(bp->b_dev); 680 struct rd_softc *rs = rd_cd.cd_devs[unit]; 681 struct partition *pinfo; 682 daddr_t bn; 683 int sz, s; 684 int offset; 685 686 #ifdef DEBUG 687 if (rddebug & RDB_FOLLOW) 688 printf("rdstrategy(%p): dev %x, bn %x, bcount %lx, %c\n", 689 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 690 (bp->b_flags & B_READ) ? 'R' : 'W'); 691 #endif 692 bn = bp->b_blkno; 693 sz = howmany(bp->b_bcount, DEV_BSIZE); 694 pinfo = &rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 695 696 /* Don't perform partition translation on RAW_PART. */ 697 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 698 699 if (rdpart(bp->b_dev) != RAW_PART) { 700 /* 701 * XXX This block of code belongs in 702 * XXX bounds_check_with_label() 703 */ 704 705 if (bn < 0 || bn + sz > pinfo->p_size) { 706 sz = pinfo->p_size - bn; 707 if (sz == 0) { 708 bp->b_resid = bp->b_bcount; 709 goto done; 710 } 711 if (sz < 0) { 712 bp->b_error = EINVAL; 713 goto bad; 714 } 715 bp->b_bcount = dbtob(sz); 716 } 717 /* 718 * Check for write to write protected label 719 */ 720 if (bn + offset <= LABELSECTOR && 721 #if LABELSECTOR != 0 722 bn + offset + sz > LABELSECTOR && 723 #endif 724 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 725 bp->b_error = EROFS; 726 goto bad; 727 } 728 } 729 bp->b_rawblkno = bn + offset; 730 s = splbio(); 731 BUFQ_PUT(&rs->sc_tab, bp); 732 if (rs->sc_active == 0) { 733 rs->sc_active = 1; 734 rdustart(rs); 735 } 736 splx(s); 737 return; 738 bad: 739 bp->b_flags |= B_ERROR; 740 done: 741 biodone(bp); 742 } 743 744 /* 745 * Called from timeout() when handling maintenance releases 746 */ 747 void 748 rdrestart(arg) 749 void *arg; 750 { 751 int s = splbio(); 752 rdustart((struct rd_softc *)arg); 753 splx(s); 754 } 755 756 void 757 rdustart(rs) 758 struct rd_softc *rs; 759 { 760 struct buf *bp; 761 762 bp = BUFQ_PEEK(&rs->sc_tab); 763 rs->sc_addr = bp->b_data; 764 rs->sc_resid = bp->b_bcount; 765 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 766 rdstart(rs); 767 } 768 769 struct buf * 770 rdfinish(rs, bp) 771 struct rd_softc *rs; 772 struct buf *bp; 773 { 774 775 rs->sc_errcnt = 0; 776 (void)BUFQ_GET(&rs->sc_tab); 777 bp->b_resid = 0; 778 biodone(bp); 779 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 780 if ((bp = BUFQ_PEEK(&rs->sc_tab)) != NULL) 781 return (bp); 782 rs->sc_active = 0; 783 if (rs->sc_flags & RDF_WANTED) { 784 rs->sc_flags &= ~RDF_WANTED; 785 wakeup((caddr_t)&rs->sc_tab); 786 } 787 return (NULL); 788 } 789 790 void 791 rdstart(arg) 792 void *arg; 793 { 794 struct rd_softc *rs = arg; 795 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 796 int part, ctlr, slave; 797 798 ctlr = rs->sc_dev.dv_parent->dv_unit; 799 slave = rs->sc_slave; 800 801 again: 802 #ifdef DEBUG 803 if (rddebug & RDB_FOLLOW) 804 printf("rdstart(%s): bp %p, %c\n", rs->sc_dev.dv_xname, bp, 805 (bp->b_flags & B_READ) ? 'R' : 'W'); 806 #endif 807 part = rdpart(bp->b_dev); 808 rs->sc_flags |= RDF_SEEK; 809 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 810 rs->sc_ioc.c_volume = C_SVOL(0); 811 rs->sc_ioc.c_saddr = C_SADDR; 812 rs->sc_ioc.c_hiaddr = 0; 813 rs->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 814 rs->sc_ioc.c_nop2 = C_NOP; 815 rs->sc_ioc.c_slen = C_SLEN; 816 rs->sc_ioc.c_len = rs->sc_resid; 817 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 818 #ifdef DEBUG 819 if (rddebug & RDB_IO) 820 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 821 ctlr, slave, C_CMD, 822 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 823 #endif 824 if (hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 825 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 826 827 /* Instrumentation. */ 828 disk_busy(&rs->sc_dkdev); 829 rs->sc_dkdev.dk_seek++; 830 831 #ifdef DEBUG 832 if (rddebug & RDB_IO) 833 printf("rdstart: hpibawait(%x)\n", ctlr); 834 #endif 835 hpibawait(ctlr); 836 return; 837 } 838 /* 839 * Experience has shown that the hpibwait in this hpibsend will 840 * occasionally timeout. It appears to occur mostly on old 7914 841 * drives with full maintenance tracks. We should probably 842 * integrate this with the backoff code in rderror. 843 */ 844 #ifdef DEBUG 845 if (rddebug & RDB_ERROR) 846 printf("%s: rdstart: cmd %x adr %lx blk %d len %d ecnt %d\n", 847 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 848 bp->b_blkno, rs->sc_resid, rs->sc_errcnt); 849 rs->sc_stats.rdretries++; 850 #endif 851 rs->sc_flags &= ~RDF_SEEK; 852 rdreset(rs); 853 if (rs->sc_errcnt++ < RDRETRY) 854 goto again; 855 printf("%s: rdstart err: cmd 0x%x sect %ld blk %d len %d\n", 856 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 857 bp->b_blkno, rs->sc_resid); 858 bp->b_flags |= B_ERROR; 859 bp->b_error = EIO; 860 bp = rdfinish(rs, bp); 861 if (bp) { 862 rs->sc_addr = bp->b_data; 863 rs->sc_resid = bp->b_bcount; 864 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 865 goto again; 866 } 867 } 868 869 void 870 rdgo(arg) 871 void *arg; 872 { 873 struct rd_softc *rs = arg; 874 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 875 int rw, ctlr, slave; 876 877 ctlr = rs->sc_dev.dv_parent->dv_unit; 878 slave = rs->sc_slave; 879 880 rw = bp->b_flags & B_READ; 881 882 /* Instrumentation. */ 883 disk_busy(&rs->sc_dkdev); 884 885 #ifdef USELEDS 886 ledcontrol(0, 0, LED_DISK); 887 #endif 888 hpibgo(ctlr, slave, C_EXEC, rs->sc_addr, rs->sc_resid, rw, rw != 0); 889 } 890 891 /* ARGSUSED */ 892 void 893 rdintr(arg) 894 void *arg; 895 { 896 struct rd_softc *rs = arg; 897 int unit = rs->sc_dev.dv_unit; 898 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 899 u_char stat = 13; /* in case hpibrecv fails */ 900 int rv, restart, ctlr, slave; 901 902 ctlr = rs->sc_dev.dv_parent->dv_unit; 903 slave = rs->sc_slave; 904 905 #ifdef DEBUG 906 if (rddebug & RDB_FOLLOW) 907 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 908 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 909 if (bp == NULL) { 910 printf("%s: bp == NULL\n", rs->sc_dev.dv_xname); 911 return; 912 } 913 #endif 914 disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid)); 915 916 if (rs->sc_flags & RDF_SEEK) { 917 rs->sc_flags &= ~RDF_SEEK; 918 if (hpibustart(ctlr)) 919 rdgo(rs); 920 return; 921 } 922 if ((rs->sc_flags & RDF_SWAIT) == 0) { 923 #ifdef DEBUG 924 rs->sc_stats.rdpolltries++; 925 #endif 926 if (hpibpptest(ctlr, slave) == 0) { 927 #ifdef DEBUG 928 rs->sc_stats.rdpollwaits++; 929 #endif 930 931 /* Instrumentation. */ 932 disk_busy(&rs->sc_dkdev); 933 rs->sc_flags |= RDF_SWAIT; 934 hpibawait(ctlr); 935 return; 936 } 937 } else 938 rs->sc_flags &= ~RDF_SWAIT; 939 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 940 if (rv != 1 || stat) { 941 #ifdef DEBUG 942 if (rddebug & RDB_ERROR) 943 printf("rdintr: recv failed or bad stat %d\n", stat); 944 #endif 945 restart = rderror(unit); 946 #ifdef DEBUG 947 rs->sc_stats.rdretries++; 948 #endif 949 if (rs->sc_errcnt++ < RDRETRY) { 950 if (restart) 951 rdstart(rs); 952 return; 953 } 954 bp->b_flags |= B_ERROR; 955 bp->b_error = EIO; 956 } 957 if (rdfinish(rs, bp)) 958 rdustart(rs); 959 #if NRND > 0 960 rnd_add_uint32(&rs->rnd_source, bp->b_blkno); 961 #endif 962 } 963 964 int 965 rdstatus(rs) 966 struct rd_softc *rs; 967 { 968 int c, s; 969 u_char stat; 970 int rv; 971 972 c = rs->sc_dev.dv_parent->dv_unit; 973 s = rs->sc_slave; 974 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 975 rs->sc_rsc.c_sram = C_SRAM; 976 rs->sc_rsc.c_ram = C_RAM; 977 rs->sc_rsc.c_cmd = C_STATUS; 978 memset((caddr_t)&rs->sc_stat, 0, sizeof(rs->sc_stat)); 979 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 980 if (rv != sizeof(rs->sc_rsc)) { 981 #ifdef DEBUG 982 if (rddebug & RDB_STATUS) 983 printf("rdstatus: send C_CMD failed %d != %d\n", 984 rv, sizeof(rs->sc_rsc)); 985 #endif 986 return(1); 987 } 988 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 989 if (rv != sizeof(rs->sc_stat)) { 990 #ifdef DEBUG 991 if (rddebug & RDB_STATUS) 992 printf("rdstatus: send C_EXEC failed %d != %d\n", 993 rv, sizeof(rs->sc_stat)); 994 #endif 995 return(1); 996 } 997 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 998 if (rv != 1 || stat) { 999 #ifdef DEBUG 1000 if (rddebug & RDB_STATUS) 1001 printf("rdstatus: recv failed %d or bad stat %d\n", 1002 rv, stat); 1003 #endif 1004 return(1); 1005 } 1006 return(0); 1007 } 1008 1009 /* 1010 * Deal with errors. 1011 * Returns 1 if request should be restarted, 1012 * 0 if we should just quietly give up. 1013 */ 1014 int 1015 rderror(unit) 1016 int unit; 1017 { 1018 struct rd_softc *rs = rd_cd.cd_devs[unit]; 1019 struct rd_stat *sp; 1020 struct buf *bp; 1021 daddr_t hwbn, pbn; 1022 char *hexstr __P((int, int)); /* XXX */ 1023 1024 if (rdstatus(rs)) { 1025 #ifdef DEBUG 1026 printf("%s: couldn't get status\n", rs->sc_dev.dv_xname); 1027 #endif 1028 rdreset(rs); 1029 return(1); 1030 } 1031 sp = &rs->sc_stat; 1032 if (sp->c_fef & FEF_REXMT) 1033 return(1); 1034 if (sp->c_fef & FEF_PF) { 1035 rdreset(rs); 1036 return(1); 1037 } 1038 /* 1039 * Unit requests release for internal maintenance. 1040 * We just delay awhile and try again later. Use expontially 1041 * increasing backoff ala ethernet drivers since we don't really 1042 * know how long the maintenance will take. With RDWAITC and 1043 * RDRETRY as defined, the range is 1 to 32 seconds. 1044 */ 1045 if (sp->c_fef & FEF_IMR) { 1046 extern int hz; 1047 int rdtimo = RDWAITC << rs->sc_errcnt; 1048 #ifdef DEBUG 1049 printf("%s: internal maintenance, %d second timeout\n", 1050 rs->sc_dev.dv_xname, rdtimo); 1051 rs->sc_stats.rdtimeouts++; 1052 #endif 1053 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 1054 callout_reset(&rs->sc_restart_ch, rdtimo * hz, rdrestart, rs); 1055 return(0); 1056 } 1057 /* 1058 * Only report error if we have reached the error reporting 1059 * threshhold. By default, this will only report after the 1060 * retry limit has been exceeded. 1061 */ 1062 if (rs->sc_errcnt < rderrthresh) 1063 return(1); 1064 1065 /* 1066 * First conjure up the block number at which the error occurred. 1067 * Note that not all errors report a block number, in that case 1068 * we just use b_blkno. 1069 */ 1070 bp = BUFQ_PEEK(&rs->sc_tab); 1071 pbn = rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1072 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1073 (sp->c_ief & IEF_RRMASK)) { 1074 hwbn = RDBTOS(pbn + bp->b_blkno); 1075 pbn = bp->b_blkno; 1076 } else { 1077 hwbn = sp->c_blk; 1078 pbn = RDSTOB(hwbn) - pbn; 1079 } 1080 /* 1081 * Now output a generic message suitable for badsect. 1082 * Note that we don't use harderr cuz it just prints 1083 * out b_blkno which is just the beginning block number 1084 * of the transfer, not necessary where the error occurred. 1085 */ 1086 printf("%s%c: hard error sn%d\n", rs->sc_dev.dv_xname, 1087 'a'+rdpart(bp->b_dev), pbn); 1088 /* 1089 * Now report the status as returned by the hardware with 1090 * attempt at interpretation (unless debugging). 1091 */ 1092 printf("%s %s error:", rs->sc_dev.dv_xname, 1093 (bp->b_flags & B_READ) ? "read" : "write"); 1094 #ifdef DEBUG 1095 if (rddebug & RDB_ERROR) { 1096 /* status info */ 1097 printf("\n volume: %d, unit: %d\n", 1098 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1099 rdprinterr("reject", sp->c_ref, err_reject); 1100 rdprinterr("fault", sp->c_fef, err_fault); 1101 rdprinterr("access", sp->c_aef, err_access); 1102 rdprinterr("info", sp->c_ief, err_info); 1103 printf(" block: %d, P1-P10: ", hwbn); 1104 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1105 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1106 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1107 /* command */ 1108 printf(" ioc: "); 1109 printf("0x%x", *(u_int *)&rs->sc_ioc.c_pad); 1110 printf("0x%x", *(u_short *)&rs->sc_ioc.c_hiaddr); 1111 printf("0x%x", *(u_int *)&rs->sc_ioc.c_addr); 1112 printf("0x%x", *(u_short *)&rs->sc_ioc.c_nop2); 1113 printf("0x%x", *(u_int *)&rs->sc_ioc.c_len); 1114 printf("0x%x\n", *(u_short *)&rs->sc_ioc.c_cmd); 1115 return(1); 1116 } 1117 #endif 1118 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1119 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1120 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1121 printf("P1-P10: "); 1122 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1123 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1124 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1125 return(1); 1126 } 1127 1128 int 1129 rdread(dev, uio, flags) 1130 dev_t dev; 1131 struct uio *uio; 1132 int flags; 1133 { 1134 1135 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 1136 } 1137 1138 int 1139 rdwrite(dev, uio, flags) 1140 dev_t dev; 1141 struct uio *uio; 1142 int flags; 1143 { 1144 1145 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1146 } 1147 1148 int 1149 rdioctl(dev, cmd, data, flag, p) 1150 dev_t dev; 1151 u_long cmd; 1152 caddr_t data; 1153 int flag; 1154 struct proc *p; 1155 { 1156 int unit = rdunit(dev); 1157 struct rd_softc *sc = rd_cd.cd_devs[unit]; 1158 struct disklabel *lp = sc->sc_dkdev.dk_label; 1159 int error, flags; 1160 1161 switch (cmd) { 1162 case DIOCGDINFO: 1163 *(struct disklabel *)data = *lp; 1164 return (0); 1165 1166 case DIOCGPART: 1167 ((struct partinfo *)data)->disklab = lp; 1168 ((struct partinfo *)data)->part = 1169 &lp->d_partitions[rdpart(dev)]; 1170 return (0); 1171 1172 case DIOCWLABEL: 1173 if ((flag & FWRITE) == 0) 1174 return (EBADF); 1175 if (*(int *)data) 1176 sc->sc_flags |= RDF_WLABEL; 1177 else 1178 sc->sc_flags &= ~RDF_WLABEL; 1179 return (0); 1180 1181 case DIOCSDINFO: 1182 if ((flag & FWRITE) == 0) 1183 return (EBADF); 1184 return (setdisklabel(lp, (struct disklabel *)data, 1185 (sc->sc_flags & RDF_WLABEL) ? 0 1186 : sc->sc_dkdev.dk_openmask, 1187 (struct cpu_disklabel *)0)); 1188 1189 case DIOCWDINFO: 1190 if ((flag & FWRITE) == 0) 1191 return (EBADF); 1192 error = setdisklabel(lp, (struct disklabel *)data, 1193 (sc->sc_flags & RDF_WLABEL) ? 0 1194 : sc->sc_dkdev.dk_openmask, 1195 (struct cpu_disklabel *)0); 1196 if (error) 1197 return (error); 1198 flags = sc->sc_flags; 1199 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1200 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, 1201 (struct cpu_disklabel *)0); 1202 sc->sc_flags = flags; 1203 return (error); 1204 1205 case DIOCGDEFLABEL: 1206 rdgetdefaultlabel(sc, (struct disklabel *)data); 1207 return (0); 1208 } 1209 return(EINVAL); 1210 } 1211 1212 void 1213 rdgetdefaultlabel(sc, lp) 1214 struct rd_softc *sc; 1215 struct disklabel *lp; 1216 { 1217 int type = sc->sc_type; 1218 1219 memset((caddr_t)lp, 0, sizeof(struct disklabel)); 1220 1221 lp->d_type = DTYPE_HPIB; 1222 lp->d_secsize = DEV_BSIZE; 1223 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1224 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1225 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1226 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1227 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1228 1229 strncpy(lp->d_typename, rdidentinfo[type].ri_desc, 16); 1230 strncpy(lp->d_packname, "fictitious", 16); 1231 lp->d_rpm = 3000; 1232 lp->d_interleave = 1; 1233 lp->d_flags = 0; 1234 1235 lp->d_partitions[RAW_PART].p_offset = 0; 1236 lp->d_partitions[RAW_PART].p_size = 1237 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1238 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1239 lp->d_npartitions = RAW_PART + 1; 1240 1241 lp->d_magic = DISKMAGIC; 1242 lp->d_magic2 = DISKMAGIC; 1243 lp->d_checksum = dkcksum(lp); 1244 } 1245 1246 int 1247 rdsize(dev) 1248 dev_t dev; 1249 { 1250 int unit = rdunit(dev); 1251 struct rd_softc *rs; 1252 int psize, didopen = 0; 1253 1254 if (unit >= rd_cd.cd_ndevs || 1255 (rs = rd_cd.cd_devs[unit]) == NULL || 1256 (rs->sc_flags & RDF_ALIVE) == 0) 1257 return (-1); 1258 1259 /* 1260 * We get called very early on (via swapconf) 1261 * without the device being open so we may need 1262 * to handle it here. 1263 */ 1264 if (rs->sc_dkdev.dk_openmask == 0) { 1265 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1266 return(-1); 1267 didopen = 1; 1268 } 1269 psize = rs->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1270 (rs->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1271 if (didopen) 1272 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1273 return (psize); 1274 } 1275 1276 #ifdef DEBUG 1277 void 1278 rdprinterr(str, err, tab) 1279 char *str; 1280 short err; 1281 char **tab; 1282 { 1283 int i; 1284 int printed; 1285 1286 if (err == 0) 1287 return; 1288 printf(" %s error %d field:", str, err); 1289 printed = 0; 1290 for (i = 0; i < 16; i++) 1291 if (err & (0x8000 >> i)) 1292 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1293 printf("\n"); 1294 } 1295 #endif 1296 1297 static int rddoingadump; /* simple mutex */ 1298 1299 /* 1300 * Non-interrupt driven, non-dma dump routine. 1301 */ 1302 int 1303 rddump(dev, blkno, va, size) 1304 dev_t dev; 1305 daddr_t blkno; 1306 caddr_t va; 1307 size_t size; 1308 { 1309 int sectorsize; /* size of a disk sector */ 1310 int nsects; /* number of sectors in partition */ 1311 int sectoff; /* sector offset of partition */ 1312 int totwrt; /* total number of sectors left to write */ 1313 int nwrt; /* current number of sectors to write */ 1314 int unit, part; 1315 int ctlr, slave; 1316 struct rd_softc *rs; 1317 struct disklabel *lp; 1318 char stat; 1319 1320 /* Check for recursive dump; if so, punt. */ 1321 if (rddoingadump) 1322 return (EFAULT); 1323 rddoingadump = 1; 1324 1325 /* Decompose unit and partition. */ 1326 unit = rdunit(dev); 1327 part = rdpart(dev); 1328 1329 /* Make sure dump device is ok. */ 1330 if (unit >= rd_cd.cd_ndevs || 1331 (rs = rd_cd.cd_devs[unit]) == NULL || 1332 (rs->sc_flags & RDF_ALIVE) == 0) 1333 return (ENXIO); 1334 1335 ctlr = rs->sc_dev.dv_parent->dv_unit; 1336 slave = rs->sc_slave; 1337 1338 /* 1339 * Convert to disk sectors. Request must be a multiple of size. 1340 */ 1341 lp = rs->sc_dkdev.dk_label; 1342 sectorsize = lp->d_secsize; 1343 if ((size % sectorsize) != 0) 1344 return (EFAULT); 1345 totwrt = size / sectorsize; 1346 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1347 1348 nsects = lp->d_partitions[part].p_size; 1349 sectoff = lp->d_partitions[part].p_offset; 1350 1351 /* Check transfer bounds against partition size. */ 1352 if ((blkno < 0) || (blkno + totwrt) > nsects) 1353 return (EINVAL); 1354 1355 /* Offset block number to start of partition. */ 1356 blkno += sectoff; 1357 1358 while (totwrt > 0) { 1359 nwrt = totwrt; /* XXX */ 1360 #ifndef RD_DUMP_NOT_TRUSTED 1361 /* 1362 * Fill out and send HPIB command. 1363 */ 1364 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1365 rs->sc_ioc.c_volume = C_SVOL(0); 1366 rs->sc_ioc.c_saddr = C_SADDR; 1367 rs->sc_ioc.c_hiaddr = 0; 1368 rs->sc_ioc.c_addr = RDBTOS(blkno); 1369 rs->sc_ioc.c_nop2 = C_NOP; 1370 rs->sc_ioc.c_slen = C_SLEN; 1371 rs->sc_ioc.c_len = nwrt * sectorsize; 1372 rs->sc_ioc.c_cmd = C_WRITE; 1373 hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 1374 sizeof(rs->sc_ioc)-2); 1375 if (hpibswait(ctlr, slave)) 1376 return (EIO); 1377 1378 /* 1379 * Send the data. 1380 */ 1381 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1382 (void) hpibswait(ctlr, slave); 1383 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1384 if (stat) 1385 return (EIO); 1386 #else /* RD_DUMP_NOT_TRUSTED */ 1387 /* Let's just talk about this first... */ 1388 printf("%s: dump addr %p, blk %d\n", sc->sc_dev.dv_xname, 1389 va, blkno); 1390 delay(500 * 1000); /* half a second */ 1391 #endif /* RD_DUMP_NOT_TRUSTED */ 1392 1393 /* update block count */ 1394 totwrt -= nwrt; 1395 blkno += nwrt; 1396 va += sectorsize * nwrt; 1397 } 1398 rddoingadump = 0; 1399 return (0); 1400 } 1401