rd.c revision 1.51
1 /* $NetBSD: rd.c,v 1.51 2002/09/06 13:18:43 gehenna 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 1.51 2002/09/06 13:18:43 gehenna 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 struct cfattach rd_ca = { 284 sizeof(struct rd_softc), rdmatch, rdattach 285 }; 286 287 extern struct cfdriver rd_cd; 288 289 dev_type_open(rdopen); 290 dev_type_close(rdclose); 291 dev_type_read(rdread); 292 dev_type_write(rdwrite); 293 dev_type_ioctl(rdioctl); 294 dev_type_strategy(rdstrategy); 295 dev_type_dump(rddump); 296 dev_type_size(rdsize); 297 298 const struct bdevsw rd_bdevsw = { 299 rdopen, rdclose, rdstrategy, rdioctl, rddump, rdsize, D_DISK 300 }; 301 302 const struct cdevsw rd_cdevsw = { 303 rdopen, rdclose, rdread, rdwrite, rdioctl, 304 nostop, notty, nopoll, nommap, D_DISK 305 }; 306 307 int 308 rdmatch(parent, match, aux) 309 struct device *parent; 310 struct cfdata *match; 311 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 (match->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 320 match->hpibbuscf_punit < HPIB_NPUNITS) 321 ha->ha_punit = match->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(parent->dv_unit, ha->ha_slave); 331 return (rdident(parent, NULL, ha)); 332 } 333 return (1); 334 } 335 336 void 337 rdattach(parent, self, aux) 338 struct device *parent, *self; 339 void *aux; 340 { 341 struct rd_softc *sc = (struct rd_softc *)self; 342 struct hpibbus_attach_args *ha = aux; 343 344 bufq_alloc(&sc->sc_tab, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 345 346 if (rdident(parent, sc, ha) == 0) { 347 printf("\n%s: didn't respond to describe command!\n", 348 sc->sc_dev.dv_xname); 349 return; 350 } 351 352 /* 353 * Initialize and attach the disk structure. 354 */ 355 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 356 sc->sc_dkdev.dk_name = sc->sc_dev.dv_xname; 357 disk_attach(&sc->sc_dkdev); 358 359 sc->sc_slave = ha->ha_slave; 360 sc->sc_punit = ha->ha_punit; 361 362 callout_init(&sc->sc_restart_ch); 363 364 /* Initialize the hpib job queue entry */ 365 sc->sc_hq.hq_softc = sc; 366 sc->sc_hq.hq_slave = sc->sc_slave; 367 sc->sc_hq.hq_start = rdstart; 368 sc->sc_hq.hq_go = rdgo; 369 sc->sc_hq.hq_intr = rdintr; 370 371 sc->sc_flags = RDF_ALIVE; 372 #ifdef DEBUG 373 /* always report errors */ 374 if (rddebug & RDB_ERROR) 375 rderrthresh = 0; 376 #endif 377 #if NRND > 0 378 /* 379 * attach the device into the random source list 380 */ 381 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 382 RND_TYPE_DISK, 0); 383 #endif 384 } 385 386 int 387 rdident(parent, sc, ha) 388 struct device *parent; 389 struct rd_softc *sc; 390 struct hpibbus_attach_args *ha; 391 { 392 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 393 u_char stat, cmd[3]; 394 char name[7]; 395 int i, id, n, ctlr, slave; 396 397 ctlr = parent->dv_unit; 398 slave = ha->ha_slave; 399 400 /* Verify that we have a CS80 device. */ 401 if ((ha->ha_id & 0x200) == 0) 402 return (0); 403 404 /* Is it one of the disks we support? */ 405 for (id = 0; id < numrdidentinfo; id++) 406 if (ha->ha_id == rdidentinfo[id].ri_hwid) 407 break; 408 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 409 return (0); 410 411 /* 412 * If we're just probing for the device, that's all the 413 * work we need to do. 414 */ 415 if (sc == NULL) 416 return (1); 417 418 /* 419 * Reset device and collect description 420 */ 421 rdreset(sc); 422 cmd[0] = C_SUNIT(ha->ha_punit); 423 cmd[1] = C_SVOL(0); 424 cmd[2] = C_DESC; 425 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 426 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 427 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 428 memset(name, 0, sizeof(name)); 429 if (stat == 0) { 430 n = desc->d_name; 431 for (i = 5; i >= 0; i--) { 432 name[i] = (n & 0xf) + '0'; 433 n >>= 4; 434 } 435 } 436 437 #ifdef DEBUG 438 if (rddebug & RDB_IDENT) { 439 printf("\n%s: name: %x ('%s')\n", 440 sc->sc_dev.dv_xname, desc->d_name, name); 441 printf(" iuw %x, maxxfr %d, ctype %d\n", 442 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 443 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 444 desc->d_utype, desc->d_sectsize, 445 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 446 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 447 desc->d_uavexfr, desc->d_retry, desc->d_access, 448 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 449 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 450 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 451 desc->d_maxvsectl, desc->d_interleave); 452 printf("%s", sc->sc_dev.dv_xname); 453 } 454 #endif 455 456 /* 457 * Take care of a couple of anomolies: 458 * 1. 7945A and 7946A both return same HW id 459 * 2. 9122S and 9134D both return same HW id 460 * 3. 9122D and 9134L both return same HW id 461 */ 462 switch (ha->ha_id) { 463 case RD7946AID: 464 if (memcmp(name, "079450", 6) == 0) 465 id = RD7945A; 466 else 467 id = RD7946A; 468 break; 469 470 case RD9134LID: 471 if (memcmp(name, "091340", 6) == 0) 472 id = RD9134L; 473 else 474 id = RD9122D; 475 break; 476 477 case RD9134DID: 478 if (memcmp(name, "091220", 6) == 0) 479 id = RD9122S; 480 else 481 id = RD9134D; 482 break; 483 } 484 485 sc->sc_type = id; 486 487 /* 488 * XXX We use DEV_BSIZE instead of the sector size value pulled 489 * XXX off the driver because all of this code assumes 512 byte 490 * XXX blocks. ICK! 491 */ 492 printf(": %s\n", rdidentinfo[id].ri_desc); 493 printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", 494 sc->sc_dev.dv_xname, rdidentinfo[id].ri_ncyl, 495 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 496 DEV_BSIZE); 497 498 return (1); 499 } 500 501 void 502 rdreset(rs) 503 struct rd_softc *rs; 504 { 505 int ctlr = rs->sc_dev.dv_parent->dv_unit; 506 int slave = rs->sc_slave; 507 u_char stat; 508 509 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 510 rs->sc_clear.c_cmd = C_CLEAR; 511 hpibsend(ctlr, slave, C_TCMD, &rs->sc_clear, sizeof(rs->sc_clear)); 512 hpibswait(ctlr, slave); 513 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 514 515 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 516 rs->sc_src.c_nop = C_NOP; 517 rs->sc_src.c_cmd = C_SREL; 518 rs->sc_src.c_param = C_REL; 519 hpibsend(ctlr, slave, C_CMD, &rs->sc_src, sizeof(rs->sc_src)); 520 hpibswait(ctlr, slave); 521 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 522 523 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 524 rs->sc_ssmc.c_cmd = C_SSM; 525 rs->sc_ssmc.c_refm = REF_MASK; 526 rs->sc_ssmc.c_fefm = FEF_MASK; 527 rs->sc_ssmc.c_aefm = AEF_MASK; 528 rs->sc_ssmc.c_iefm = IEF_MASK; 529 hpibsend(ctlr, slave, C_CMD, &rs->sc_ssmc, sizeof(rs->sc_ssmc)); 530 hpibswait(ctlr, slave); 531 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 532 #ifdef DEBUG 533 rs->sc_stats.rdresets++; 534 #endif 535 } 536 537 /* 538 * Read or constuct a disklabel 539 */ 540 int 541 rdgetinfo(dev) 542 dev_t dev; 543 { 544 int unit = rdunit(dev); 545 struct rd_softc *rs = rd_cd.cd_devs[unit]; 546 struct disklabel *lp = rs->sc_dkdev.dk_label; 547 struct partition *pi; 548 char *msg; 549 550 /* 551 * Set some default values to use while reading the label 552 * or to use if there isn't a label. 553 */ 554 memset((caddr_t)lp, 0, sizeof *lp); 555 rdgetdefaultlabel(rs, lp); 556 557 /* 558 * Now try to read the disklabel 559 */ 560 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 561 if (msg == NULL) 562 return (0); 563 564 pi = lp->d_partitions; 565 printf("%s: WARNING: %s, ", rs->sc_dev.dv_xname, msg); 566 #ifdef COMPAT_NOLABEL 567 printf("using old default partitioning\n"); 568 rdmakedisklabel(unit, lp); 569 #else 570 printf("defining `c' partition as entire disk\n"); 571 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 572 /* XXX reset other info since readdisklabel screws with it */ 573 lp->d_npartitions = 3; 574 pi[0].p_size = 0; 575 #endif 576 return(0); 577 } 578 579 int 580 rdopen(dev, flags, mode, p) 581 dev_t dev; 582 int flags, mode; 583 struct proc *p; 584 { 585 int unit = rdunit(dev); 586 struct rd_softc *rs; 587 int error, mask, part; 588 589 if (unit >= rd_cd.cd_ndevs || 590 (rs = rd_cd.cd_devs[unit]) == NULL || 591 (rs->sc_flags & RDF_ALIVE) == 0) 592 return (ENXIO); 593 594 /* 595 * Wait for any pending opens/closes to complete 596 */ 597 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 598 (void) tsleep(rs, PRIBIO, "rdopen", 0); 599 600 /* 601 * On first open, get label and partition info. 602 * We may block reading the label, so be careful 603 * to stop any other opens. 604 */ 605 if (rs->sc_dkdev.dk_openmask == 0) { 606 rs->sc_flags |= RDF_OPENING; 607 error = rdgetinfo(dev); 608 rs->sc_flags &= ~RDF_OPENING; 609 wakeup((caddr_t)rs); 610 if (error) 611 return(error); 612 } 613 614 part = rdpart(dev); 615 mask = 1 << part; 616 617 /* Check that the partition exists. */ 618 if (part != RAW_PART && 619 (part > rs->sc_dkdev.dk_label->d_npartitions || 620 rs->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 621 return (ENXIO); 622 623 /* Ensure only one open at a time. */ 624 switch (mode) { 625 case S_IFCHR: 626 rs->sc_dkdev.dk_copenmask |= mask; 627 break; 628 case S_IFBLK: 629 rs->sc_dkdev.dk_bopenmask |= mask; 630 break; 631 } 632 rs->sc_dkdev.dk_openmask = 633 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 634 635 return(0); 636 } 637 638 int 639 rdclose(dev, flag, mode, p) 640 dev_t dev; 641 int flag, mode; 642 struct proc *p; 643 { 644 int unit = rdunit(dev); 645 struct rd_softc *rs = rd_cd.cd_devs[unit]; 646 struct disk *dk = &rs->sc_dkdev; 647 int mask, s; 648 649 mask = 1 << rdpart(dev); 650 if (mode == S_IFCHR) 651 dk->dk_copenmask &= ~mask; 652 else 653 dk->dk_bopenmask &= ~mask; 654 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 655 /* 656 * On last close, we wait for all activity to cease since 657 * the label/parition info will become invalid. Since we 658 * might sleep, we must block any opens while we are here. 659 * Note we don't have to about other closes since we know 660 * we are the last one. 661 */ 662 if (dk->dk_openmask == 0) { 663 rs->sc_flags |= RDF_CLOSING; 664 s = splbio(); 665 while (rs->sc_active) { 666 rs->sc_flags |= RDF_WANTED; 667 (void) tsleep(&rs->sc_tab, PRIBIO, "rdclose", 0); 668 } 669 splx(s); 670 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 671 wakeup((caddr_t)rs); 672 } 673 return(0); 674 } 675 676 void 677 rdstrategy(bp) 678 struct buf *bp; 679 { 680 int unit = rdunit(bp->b_dev); 681 struct rd_softc *rs = rd_cd.cd_devs[unit]; 682 struct partition *pinfo; 683 daddr_t bn; 684 int sz, s; 685 int offset; 686 687 #ifdef DEBUG 688 if (rddebug & RDB_FOLLOW) 689 printf("rdstrategy(%p): dev %x, bn %x, bcount %lx, %c\n", 690 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 691 (bp->b_flags & B_READ) ? 'R' : 'W'); 692 #endif 693 bn = bp->b_blkno; 694 sz = howmany(bp->b_bcount, DEV_BSIZE); 695 pinfo = &rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 696 697 /* Don't perform partition translation on RAW_PART. */ 698 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 699 700 if (rdpart(bp->b_dev) != RAW_PART) { 701 /* 702 * XXX This block of code belongs in 703 * XXX bounds_check_with_label() 704 */ 705 706 if (bn < 0 || bn + sz > pinfo->p_size) { 707 sz = pinfo->p_size - bn; 708 if (sz == 0) { 709 bp->b_resid = bp->b_bcount; 710 goto done; 711 } 712 if (sz < 0) { 713 bp->b_error = EINVAL; 714 goto bad; 715 } 716 bp->b_bcount = dbtob(sz); 717 } 718 /* 719 * Check for write to write protected label 720 */ 721 if (bn + offset <= LABELSECTOR && 722 #if LABELSECTOR != 0 723 bn + offset + sz > LABELSECTOR && 724 #endif 725 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 726 bp->b_error = EROFS; 727 goto bad; 728 } 729 } 730 bp->b_rawblkno = bn + offset; 731 s = splbio(); 732 BUFQ_PUT(&rs->sc_tab, bp); 733 if (rs->sc_active == 0) { 734 rs->sc_active = 1; 735 rdustart(rs); 736 } 737 splx(s); 738 return; 739 bad: 740 bp->b_flags |= B_ERROR; 741 done: 742 biodone(bp); 743 } 744 745 /* 746 * Called from timeout() when handling maintenance releases 747 */ 748 void 749 rdrestart(arg) 750 void *arg; 751 { 752 int s = splbio(); 753 rdustart((struct rd_softc *)arg); 754 splx(s); 755 } 756 757 void 758 rdustart(rs) 759 struct rd_softc *rs; 760 { 761 struct buf *bp; 762 763 bp = BUFQ_PEEK(&rs->sc_tab); 764 rs->sc_addr = bp->b_data; 765 rs->sc_resid = bp->b_bcount; 766 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 767 rdstart(rs); 768 } 769 770 struct buf * 771 rdfinish(rs, bp) 772 struct rd_softc *rs; 773 struct buf *bp; 774 { 775 776 rs->sc_errcnt = 0; 777 (void)BUFQ_GET(&rs->sc_tab); 778 bp->b_resid = 0; 779 biodone(bp); 780 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 781 if ((bp = BUFQ_PEEK(&rs->sc_tab)) != NULL) 782 return (bp); 783 rs->sc_active = 0; 784 if (rs->sc_flags & RDF_WANTED) { 785 rs->sc_flags &= ~RDF_WANTED; 786 wakeup((caddr_t)&rs->sc_tab); 787 } 788 return (NULL); 789 } 790 791 void 792 rdstart(arg) 793 void *arg; 794 { 795 struct rd_softc *rs = arg; 796 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 797 int part, ctlr, slave; 798 799 ctlr = rs->sc_dev.dv_parent->dv_unit; 800 slave = rs->sc_slave; 801 802 again: 803 #ifdef DEBUG 804 if (rddebug & RDB_FOLLOW) 805 printf("rdstart(%s): bp %p, %c\n", rs->sc_dev.dv_xname, bp, 806 (bp->b_flags & B_READ) ? 'R' : 'W'); 807 #endif 808 part = rdpart(bp->b_dev); 809 rs->sc_flags |= RDF_SEEK; 810 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 811 rs->sc_ioc.c_volume = C_SVOL(0); 812 rs->sc_ioc.c_saddr = C_SADDR; 813 rs->sc_ioc.c_hiaddr = 0; 814 rs->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 815 rs->sc_ioc.c_nop2 = C_NOP; 816 rs->sc_ioc.c_slen = C_SLEN; 817 rs->sc_ioc.c_len = rs->sc_resid; 818 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 819 #ifdef DEBUG 820 if (rddebug & RDB_IO) 821 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 822 ctlr, slave, C_CMD, 823 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 824 #endif 825 if (hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 826 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 827 828 /* Instrumentation. */ 829 disk_busy(&rs->sc_dkdev); 830 rs->sc_dkdev.dk_seek++; 831 832 #ifdef DEBUG 833 if (rddebug & RDB_IO) 834 printf("rdstart: hpibawait(%x)\n", ctlr); 835 #endif 836 hpibawait(ctlr); 837 return; 838 } 839 /* 840 * Experience has shown that the hpibwait in this hpibsend will 841 * occasionally timeout. It appears to occur mostly on old 7914 842 * drives with full maintenance tracks. We should probably 843 * integrate this with the backoff code in rderror. 844 */ 845 #ifdef DEBUG 846 if (rddebug & RDB_ERROR) 847 printf("%s: rdstart: cmd %x adr %lx blk %d len %d ecnt %d\n", 848 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 849 bp->b_blkno, rs->sc_resid, rs->sc_errcnt); 850 rs->sc_stats.rdretries++; 851 #endif 852 rs->sc_flags &= ~RDF_SEEK; 853 rdreset(rs); 854 if (rs->sc_errcnt++ < RDRETRY) 855 goto again; 856 printf("%s: rdstart err: cmd 0x%x sect %ld blk %d len %d\n", 857 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 858 bp->b_blkno, rs->sc_resid); 859 bp->b_flags |= B_ERROR; 860 bp->b_error = EIO; 861 bp = rdfinish(rs, bp); 862 if (bp) { 863 rs->sc_addr = bp->b_data; 864 rs->sc_resid = bp->b_bcount; 865 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 866 goto again; 867 } 868 } 869 870 void 871 rdgo(arg) 872 void *arg; 873 { 874 struct rd_softc *rs = arg; 875 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 876 int rw, ctlr, slave; 877 878 ctlr = rs->sc_dev.dv_parent->dv_unit; 879 slave = rs->sc_slave; 880 881 rw = bp->b_flags & B_READ; 882 883 /* Instrumentation. */ 884 disk_busy(&rs->sc_dkdev); 885 886 #ifdef USELEDS 887 ledcontrol(0, 0, LED_DISK); 888 #endif 889 hpibgo(ctlr, slave, C_EXEC, rs->sc_addr, rs->sc_resid, rw, rw != 0); 890 } 891 892 /* ARGSUSED */ 893 void 894 rdintr(arg) 895 void *arg; 896 { 897 struct rd_softc *rs = arg; 898 int unit = rs->sc_dev.dv_unit; 899 struct buf *bp = BUFQ_PEEK(&rs->sc_tab); 900 u_char stat = 13; /* in case hpibrecv fails */ 901 int rv, restart, ctlr, slave; 902 903 ctlr = rs->sc_dev.dv_parent->dv_unit; 904 slave = rs->sc_slave; 905 906 #ifdef DEBUG 907 if (rddebug & RDB_FOLLOW) 908 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 909 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 910 if (bp == NULL) { 911 printf("%s: bp == NULL\n", rs->sc_dev.dv_xname); 912 return; 913 } 914 #endif 915 disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid)); 916 917 if (rs->sc_flags & RDF_SEEK) { 918 rs->sc_flags &= ~RDF_SEEK; 919 if (hpibustart(ctlr)) 920 rdgo(rs); 921 return; 922 } 923 if ((rs->sc_flags & RDF_SWAIT) == 0) { 924 #ifdef DEBUG 925 rs->sc_stats.rdpolltries++; 926 #endif 927 if (hpibpptest(ctlr, slave) == 0) { 928 #ifdef DEBUG 929 rs->sc_stats.rdpollwaits++; 930 #endif 931 932 /* Instrumentation. */ 933 disk_busy(&rs->sc_dkdev); 934 rs->sc_flags |= RDF_SWAIT; 935 hpibawait(ctlr); 936 return; 937 } 938 } else 939 rs->sc_flags &= ~RDF_SWAIT; 940 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 941 if (rv != 1 || stat) { 942 #ifdef DEBUG 943 if (rddebug & RDB_ERROR) 944 printf("rdintr: recv failed or bad stat %d\n", stat); 945 #endif 946 restart = rderror(unit); 947 #ifdef DEBUG 948 rs->sc_stats.rdretries++; 949 #endif 950 if (rs->sc_errcnt++ < RDRETRY) { 951 if (restart) 952 rdstart(rs); 953 return; 954 } 955 bp->b_flags |= B_ERROR; 956 bp->b_error = EIO; 957 } 958 if (rdfinish(rs, bp)) 959 rdustart(rs); 960 #if NRND > 0 961 rnd_add_uint32(&rs->rnd_source, bp->b_blkno); 962 #endif 963 } 964 965 int 966 rdstatus(rs) 967 struct rd_softc *rs; 968 { 969 int c, s; 970 u_char stat; 971 int rv; 972 973 c = rs->sc_dev.dv_parent->dv_unit; 974 s = rs->sc_slave; 975 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 976 rs->sc_rsc.c_sram = C_SRAM; 977 rs->sc_rsc.c_ram = C_RAM; 978 rs->sc_rsc.c_cmd = C_STATUS; 979 memset((caddr_t)&rs->sc_stat, 0, sizeof(rs->sc_stat)); 980 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 981 if (rv != sizeof(rs->sc_rsc)) { 982 #ifdef DEBUG 983 if (rddebug & RDB_STATUS) 984 printf("rdstatus: send C_CMD failed %d != %d\n", 985 rv, sizeof(rs->sc_rsc)); 986 #endif 987 return(1); 988 } 989 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 990 if (rv != sizeof(rs->sc_stat)) { 991 #ifdef DEBUG 992 if (rddebug & RDB_STATUS) 993 printf("rdstatus: send C_EXEC failed %d != %d\n", 994 rv, sizeof(rs->sc_stat)); 995 #endif 996 return(1); 997 } 998 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 999 if (rv != 1 || stat) { 1000 #ifdef DEBUG 1001 if (rddebug & RDB_STATUS) 1002 printf("rdstatus: recv failed %d or bad stat %d\n", 1003 rv, stat); 1004 #endif 1005 return(1); 1006 } 1007 return(0); 1008 } 1009 1010 /* 1011 * Deal with errors. 1012 * Returns 1 if request should be restarted, 1013 * 0 if we should just quietly give up. 1014 */ 1015 int 1016 rderror(unit) 1017 int unit; 1018 { 1019 struct rd_softc *rs = rd_cd.cd_devs[unit]; 1020 struct rd_stat *sp; 1021 struct buf *bp; 1022 daddr_t hwbn, pbn; 1023 char *hexstr __P((int, int)); /* XXX */ 1024 1025 if (rdstatus(rs)) { 1026 #ifdef DEBUG 1027 printf("%s: couldn't get status\n", rs->sc_dev.dv_xname); 1028 #endif 1029 rdreset(rs); 1030 return(1); 1031 } 1032 sp = &rs->sc_stat; 1033 if (sp->c_fef & FEF_REXMT) 1034 return(1); 1035 if (sp->c_fef & FEF_PF) { 1036 rdreset(rs); 1037 return(1); 1038 } 1039 /* 1040 * Unit requests release for internal maintenance. 1041 * We just delay awhile and try again later. Use expontially 1042 * increasing backoff ala ethernet drivers since we don't really 1043 * know how long the maintenance will take. With RDWAITC and 1044 * RDRETRY as defined, the range is 1 to 32 seconds. 1045 */ 1046 if (sp->c_fef & FEF_IMR) { 1047 extern int hz; 1048 int rdtimo = RDWAITC << rs->sc_errcnt; 1049 #ifdef DEBUG 1050 printf("%s: internal maintenance, %d second timeout\n", 1051 rs->sc_dev.dv_xname, rdtimo); 1052 rs->sc_stats.rdtimeouts++; 1053 #endif 1054 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 1055 callout_reset(&rs->sc_restart_ch, rdtimo * hz, rdrestart, rs); 1056 return(0); 1057 } 1058 /* 1059 * Only report error if we have reached the error reporting 1060 * threshhold. By default, this will only report after the 1061 * retry limit has been exceeded. 1062 */ 1063 if (rs->sc_errcnt < rderrthresh) 1064 return(1); 1065 1066 /* 1067 * First conjure up the block number at which the error occurred. 1068 * Note that not all errors report a block number, in that case 1069 * we just use b_blkno. 1070 */ 1071 bp = BUFQ_PEEK(&rs->sc_tab); 1072 pbn = rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1073 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1074 (sp->c_ief & IEF_RRMASK)) { 1075 hwbn = RDBTOS(pbn + bp->b_blkno); 1076 pbn = bp->b_blkno; 1077 } else { 1078 hwbn = sp->c_blk; 1079 pbn = RDSTOB(hwbn) - pbn; 1080 } 1081 /* 1082 * Now output a generic message suitable for badsect. 1083 * Note that we don't use harderr cuz it just prints 1084 * out b_blkno which is just the beginning block number 1085 * of the transfer, not necessary where the error occurred. 1086 */ 1087 printf("%s%c: hard error sn%d\n", rs->sc_dev.dv_xname, 1088 'a'+rdpart(bp->b_dev), pbn); 1089 /* 1090 * Now report the status as returned by the hardware with 1091 * attempt at interpretation (unless debugging). 1092 */ 1093 printf("%s %s error:", rs->sc_dev.dv_xname, 1094 (bp->b_flags & B_READ) ? "read" : "write"); 1095 #ifdef DEBUG 1096 if (rddebug & RDB_ERROR) { 1097 /* status info */ 1098 printf("\n volume: %d, unit: %d\n", 1099 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1100 rdprinterr("reject", sp->c_ref, err_reject); 1101 rdprinterr("fault", sp->c_fef, err_fault); 1102 rdprinterr("access", sp->c_aef, err_access); 1103 rdprinterr("info", sp->c_ief, err_info); 1104 printf(" block: %d, P1-P10: ", hwbn); 1105 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1106 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1107 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1108 /* command */ 1109 printf(" ioc: "); 1110 printf("0x%x", *(u_int *)&rs->sc_ioc.c_pad); 1111 printf("0x%x", *(u_short *)&rs->sc_ioc.c_hiaddr); 1112 printf("0x%x", *(u_int *)&rs->sc_ioc.c_addr); 1113 printf("0x%x", *(u_short *)&rs->sc_ioc.c_nop2); 1114 printf("0x%x", *(u_int *)&rs->sc_ioc.c_len); 1115 printf("0x%x\n", *(u_short *)&rs->sc_ioc.c_cmd); 1116 return(1); 1117 } 1118 #endif 1119 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1120 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1121 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1122 printf("P1-P10: "); 1123 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1124 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1125 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1126 return(1); 1127 } 1128 1129 int 1130 rdread(dev, uio, flags) 1131 dev_t dev; 1132 struct uio *uio; 1133 int flags; 1134 { 1135 1136 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 1137 } 1138 1139 int 1140 rdwrite(dev, uio, flags) 1141 dev_t dev; 1142 struct uio *uio; 1143 int flags; 1144 { 1145 1146 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1147 } 1148 1149 int 1150 rdioctl(dev, cmd, data, flag, p) 1151 dev_t dev; 1152 u_long cmd; 1153 caddr_t data; 1154 int flag; 1155 struct proc *p; 1156 { 1157 int unit = rdunit(dev); 1158 struct rd_softc *sc = rd_cd.cd_devs[unit]; 1159 struct disklabel *lp = sc->sc_dkdev.dk_label; 1160 int error, flags; 1161 1162 switch (cmd) { 1163 case DIOCGDINFO: 1164 *(struct disklabel *)data = *lp; 1165 return (0); 1166 1167 case DIOCGPART: 1168 ((struct partinfo *)data)->disklab = lp; 1169 ((struct partinfo *)data)->part = 1170 &lp->d_partitions[rdpart(dev)]; 1171 return (0); 1172 1173 case DIOCWLABEL: 1174 if ((flag & FWRITE) == 0) 1175 return (EBADF); 1176 if (*(int *)data) 1177 sc->sc_flags |= RDF_WLABEL; 1178 else 1179 sc->sc_flags &= ~RDF_WLABEL; 1180 return (0); 1181 1182 case DIOCSDINFO: 1183 if ((flag & FWRITE) == 0) 1184 return (EBADF); 1185 return (setdisklabel(lp, (struct disklabel *)data, 1186 (sc->sc_flags & RDF_WLABEL) ? 0 1187 : sc->sc_dkdev.dk_openmask, 1188 (struct cpu_disklabel *)0)); 1189 1190 case DIOCWDINFO: 1191 if ((flag & FWRITE) == 0) 1192 return (EBADF); 1193 error = setdisklabel(lp, (struct disklabel *)data, 1194 (sc->sc_flags & RDF_WLABEL) ? 0 1195 : sc->sc_dkdev.dk_openmask, 1196 (struct cpu_disklabel *)0); 1197 if (error) 1198 return (error); 1199 flags = sc->sc_flags; 1200 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1201 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, 1202 (struct cpu_disklabel *)0); 1203 sc->sc_flags = flags; 1204 return (error); 1205 1206 case DIOCGDEFLABEL: 1207 rdgetdefaultlabel(sc, (struct disklabel *)data); 1208 return (0); 1209 } 1210 return(EINVAL); 1211 } 1212 1213 void 1214 rdgetdefaultlabel(sc, lp) 1215 struct rd_softc *sc; 1216 struct disklabel *lp; 1217 { 1218 int type = sc->sc_type; 1219 1220 memset((caddr_t)lp, 0, sizeof(struct disklabel)); 1221 1222 lp->d_type = DTYPE_HPIB; 1223 lp->d_secsize = DEV_BSIZE; 1224 lp->d_nsectors = rdidentinfo[type].ri_nbpt; 1225 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1226 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1227 lp->d_secperunit = rdidentinfo[type].ri_nblocks; 1228 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1229 1230 strncpy(lp->d_typename, rdidentinfo[type].ri_desc, 16); 1231 strncpy(lp->d_packname, "fictitious", 16); 1232 lp->d_rpm = 3000; 1233 lp->d_interleave = 1; 1234 lp->d_flags = 0; 1235 1236 lp->d_partitions[RAW_PART].p_offset = 0; 1237 lp->d_partitions[RAW_PART].p_size = 1238 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1239 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1240 lp->d_npartitions = RAW_PART + 1; 1241 1242 lp->d_magic = DISKMAGIC; 1243 lp->d_magic2 = DISKMAGIC; 1244 lp->d_checksum = dkcksum(lp); 1245 } 1246 1247 int 1248 rdsize(dev) 1249 dev_t dev; 1250 { 1251 int unit = rdunit(dev); 1252 struct rd_softc *rs; 1253 int psize, didopen = 0; 1254 1255 if (unit >= rd_cd.cd_ndevs || 1256 (rs = rd_cd.cd_devs[unit]) == NULL || 1257 (rs->sc_flags & RDF_ALIVE) == 0) 1258 return (-1); 1259 1260 /* 1261 * We get called very early on (via swapconf) 1262 * without the device being open so we may need 1263 * to handle it here. 1264 */ 1265 if (rs->sc_dkdev.dk_openmask == 0) { 1266 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1267 return(-1); 1268 didopen = 1; 1269 } 1270 psize = rs->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1271 (rs->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1272 if (didopen) 1273 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1274 return (psize); 1275 } 1276 1277 #ifdef DEBUG 1278 void 1279 rdprinterr(str, err, tab) 1280 char *str; 1281 short err; 1282 char **tab; 1283 { 1284 int i; 1285 int printed; 1286 1287 if (err == 0) 1288 return; 1289 printf(" %s error %d field:", str, err); 1290 printed = 0; 1291 for (i = 0; i < 16; i++) 1292 if (err & (0x8000 >> i)) 1293 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1294 printf("\n"); 1295 } 1296 #endif 1297 1298 static int rddoingadump; /* simple mutex */ 1299 1300 /* 1301 * Non-interrupt driven, non-dma dump routine. 1302 */ 1303 int 1304 rddump(dev, blkno, va, size) 1305 dev_t dev; 1306 daddr_t blkno; 1307 caddr_t va; 1308 size_t size; 1309 { 1310 int sectorsize; /* size of a disk sector */ 1311 int nsects; /* number of sectors in partition */ 1312 int sectoff; /* sector offset of partition */ 1313 int totwrt; /* total number of sectors left to write */ 1314 int nwrt; /* current number of sectors to write */ 1315 int unit, part; 1316 int ctlr, slave; 1317 struct rd_softc *rs; 1318 struct disklabel *lp; 1319 char stat; 1320 1321 /* Check for recursive dump; if so, punt. */ 1322 if (rddoingadump) 1323 return (EFAULT); 1324 rddoingadump = 1; 1325 1326 /* Decompose unit and partition. */ 1327 unit = rdunit(dev); 1328 part = rdpart(dev); 1329 1330 /* Make sure dump device is ok. */ 1331 if (unit >= rd_cd.cd_ndevs || 1332 (rs = rd_cd.cd_devs[unit]) == NULL || 1333 (rs->sc_flags & RDF_ALIVE) == 0) 1334 return (ENXIO); 1335 1336 ctlr = rs->sc_dev.dv_parent->dv_unit; 1337 slave = rs->sc_slave; 1338 1339 /* 1340 * Convert to disk sectors. Request must be a multiple of size. 1341 */ 1342 lp = rs->sc_dkdev.dk_label; 1343 sectorsize = lp->d_secsize; 1344 if ((size % sectorsize) != 0) 1345 return (EFAULT); 1346 totwrt = size / sectorsize; 1347 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1348 1349 nsects = lp->d_partitions[part].p_size; 1350 sectoff = lp->d_partitions[part].p_offset; 1351 1352 /* Check transfer bounds against partition size. */ 1353 if ((blkno < 0) || (blkno + totwrt) > nsects) 1354 return (EINVAL); 1355 1356 /* Offset block number to start of partition. */ 1357 blkno += sectoff; 1358 1359 while (totwrt > 0) { 1360 nwrt = totwrt; /* XXX */ 1361 #ifndef RD_DUMP_NOT_TRUSTED 1362 /* 1363 * Fill out and send HPIB command. 1364 */ 1365 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1366 rs->sc_ioc.c_volume = C_SVOL(0); 1367 rs->sc_ioc.c_saddr = C_SADDR; 1368 rs->sc_ioc.c_hiaddr = 0; 1369 rs->sc_ioc.c_addr = RDBTOS(blkno); 1370 rs->sc_ioc.c_nop2 = C_NOP; 1371 rs->sc_ioc.c_slen = C_SLEN; 1372 rs->sc_ioc.c_len = nwrt * sectorsize; 1373 rs->sc_ioc.c_cmd = C_WRITE; 1374 hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 1375 sizeof(rs->sc_ioc)-2); 1376 if (hpibswait(ctlr, slave)) 1377 return (EIO); 1378 1379 /* 1380 * Send the data. 1381 */ 1382 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1383 (void) hpibswait(ctlr, slave); 1384 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1385 if (stat) 1386 return (EIO); 1387 #else /* RD_DUMP_NOT_TRUSTED */ 1388 /* Let's just talk about this first... */ 1389 printf("%s: dump addr %p, blk %d\n", sc->sc_dev.dv_xname, 1390 va, blkno); 1391 delay(500 * 1000); /* half a second */ 1392 #endif /* RD_DUMP_NOT_TRUSTED */ 1393 1394 /* update block count */ 1395 totwrt -= nwrt; 1396 blkno += nwrt; 1397 va += sectorsize * nwrt; 1398 } 1399 rddoingadump = 0; 1400 return (0); 1401 } 1402
Indexes created Mon Sep 29 21:09:56 GMT 2025