rd.c revision 1.48
1 /* $NetBSD: rd.c,v 1.48 2002/03/15 05:55:36 gmcgarry 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 1.48 2002/03/15 05:55:36 gmcgarry 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 bdev_decl(rd); 260 cdev_decl(rd); 261 262 int rdident __P((struct device *, struct rd_softc *, 263 struct hpibbus_attach_args *)); 264 void rdreset __P((struct rd_softc *)); 265 void rdustart __P((struct rd_softc *)); 266 int rdgetinfo __P((dev_t)); 267 void rdrestart __P((void *)); 268 struct buf *rdfinish __P((struct rd_softc *, struct buf *)); 269 270 void rdgetdefaultlabel __P((struct rd_softc *, struct disklabel *)); 271 void rdrestart __P((void *)); 272 void rdustart __P((struct rd_softc *)); 273 struct buf *rdfinish __P((struct rd_softc *, struct buf *)); 274 void rdstart __P((void *)); 275 void rdgo __P((void *)); 276 void rdintr __P((void *)); 277 int rdstatus __P((struct rd_softc *)); 278 int rderror __P((int)); 279 #ifdef DEBUG 280 void rdprinterr __P((char *, short, char **)); 281 #endif 282 283 int rdmatch __P((struct device *, struct cfdata *, void *)); 284 void rdattach __P((struct device *, struct device *, void *)); 285 286 struct cfattach rd_ca = { 287 sizeof(struct rd_softc), rdmatch, rdattach 288 }; 289 290 extern struct cfdriver rd_cd; 291 292 int 293 rdmatch(parent, match, aux) 294 struct device *parent; 295 struct cfdata *match; 296 void *aux; 297 { 298 struct hpibbus_attach_args *ha = aux; 299 300 /* 301 * Set punit if operator specified one in the kernel 302 * configuration file. 303 */ 304 if (match->hpibbuscf_punit != HPIBBUSCF_PUNIT_DEFAULT && 305 match->hpibbuscf_punit < HPIB_NPUNITS) 306 ha->ha_punit = match->hpibbuscf_punit; 307 308 if (rdident(parent, NULL, ha) == 0) { 309 /* 310 * XXX Some aging HP-IB drives are slow to 311 * XXX respond; give them a chance to catch 312 * XXX up and probe them again. 313 */ 314 delay(10000); 315 ha->ha_id = hpibid(parent->dv_unit, ha->ha_slave); 316 return (rdident(parent, NULL, ha)); 317 } 318 return (1); 319 } 320 321 void 322 rdattach(parent, self, aux) 323 struct device *parent, *self; 324 void *aux; 325 { 326 struct rd_softc *sc = (struct rd_softc *)self; 327 struct hpibbus_attach_args *ha = aux; 328 329 BUFQ_INIT(&sc->sc_tab); 330 331 if (rdident(parent, sc, ha) == 0) { 332 printf("\n%s: didn't respond to describe command!\n", 333 sc->sc_dev.dv_xname); 334 return; 335 } 336 337 /* 338 * Initialize and attach the disk structure. 339 */ 340 memset(&sc->sc_dkdev, 0, sizeof(sc->sc_dkdev)); 341 sc->sc_dkdev.dk_name = sc->sc_dev.dv_xname; 342 disk_attach(&sc->sc_dkdev); 343 344 sc->sc_slave = ha->ha_slave; 345 sc->sc_punit = ha->ha_punit; 346 347 callout_init(&sc->sc_restart_ch); 348 349 /* Initialize the hpib job queue entry */ 350 sc->sc_hq.hq_softc = sc; 351 sc->sc_hq.hq_slave = sc->sc_slave; 352 sc->sc_hq.hq_start = rdstart; 353 sc->sc_hq.hq_go = rdgo; 354 sc->sc_hq.hq_intr = rdintr; 355 356 sc->sc_flags = RDF_ALIVE; 357 #ifdef DEBUG 358 /* always report errors */ 359 if (rddebug & RDB_ERROR) 360 rderrthresh = 0; 361 #endif 362 #if NRND > 0 363 /* 364 * attach the device into the random source list 365 */ 366 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 367 RND_TYPE_DISK, 0); 368 #endif 369 } 370 371 int 372 rdident(parent, sc, ha) 373 struct device *parent; 374 struct rd_softc *sc; 375 struct hpibbus_attach_args *ha; 376 { 377 struct rd_describe *desc = sc != NULL ? &sc->sc_rddesc : NULL; 378 u_char stat, cmd[3]; 379 char name[7]; 380 int i, id, n, ctlr, slave; 381 382 ctlr = parent->dv_unit; 383 slave = ha->ha_slave; 384 385 /* Verify that we have a CS80 device. */ 386 if ((ha->ha_id & 0x200) == 0) 387 return (0); 388 389 /* Is it one of the disks we support? */ 390 for (id = 0; id < numrdidentinfo; id++) 391 if (ha->ha_id == rdidentinfo[id].ri_hwid) 392 break; 393 if (id == numrdidentinfo || ha->ha_punit > rdidentinfo[id].ri_maxunum) 394 return (0); 395 396 /* 397 * If we're just probing for the device, that's all the 398 * work we need to do. 399 */ 400 if (sc == NULL) 401 return (1); 402 403 /* 404 * Reset device and collect description 405 */ 406 rdreset(sc); 407 cmd[0] = C_SUNIT(ha->ha_punit); 408 cmd[1] = C_SVOL(0); 409 cmd[2] = C_DESC; 410 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 411 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 412 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 413 memset(name, 0, sizeof(name)); 414 if (stat == 0) { 415 n = desc->d_name; 416 for (i = 5; i >= 0; i--) { 417 name[i] = (n & 0xf) + '0'; 418 n >>= 4; 419 } 420 } 421 422 #ifdef DEBUG 423 if (rddebug & RDB_IDENT) { 424 printf("\n%s: name: %x ('%s')\n", 425 sc->sc_dev.dv_xname, desc->d_name, name); 426 printf(" iuw %x, maxxfr %d, ctype %d\n", 427 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 428 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 429 desc->d_utype, desc->d_sectsize, 430 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 431 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 432 desc->d_uavexfr, desc->d_retry, desc->d_access, 433 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 434 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 435 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 436 desc->d_maxvsectl, desc->d_interleave); 437 printf("%s", sc->sc_dev.dv_xname); 438 } 439 #endif 440 441 /* 442 * Take care of a couple of anomolies: 443 * 1. 7945A and 7946A both return same HW id 444 * 2. 9122S and 9134D both return same HW id 445 * 3. 9122D and 9134L both return same HW id 446 */ 447 switch (ha->ha_id) { 448 case RD7946AID: 449 if (memcmp(name, "079450", 6) == 0) 450 id = RD7945A; 451 else 452 id = RD7946A; 453 break; 454 455 case RD9134LID: 456 if (memcmp(name, "091340", 6) == 0) 457 id = RD9134L; 458 else 459 id = RD9122D; 460 break; 461 462 case RD9134DID: 463 if (memcmp(name, "091220", 6) == 0) 464 id = RD9122S; 465 else 466 id = RD9134D; 467 break; 468 } 469 470 sc->sc_type = id; 471 472 /* 473 * XXX We use DEV_BSIZE instead of the sector size value pulled 474 * XXX off the driver because all of this code assumes 512 byte 475 * XXX blocks. ICK! 476 */ 477 printf(": %s\n", rdidentinfo[id].ri_desc); 478 printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", 479 sc->sc_dev.dv_xname, rdidentinfo[id].ri_ncyl, 480 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 481 DEV_BSIZE); 482 483 return (1); 484 } 485 486 void 487 rdreset(rs) 488 struct rd_softc *rs; 489 { 490 int ctlr = rs->sc_dev.dv_parent->dv_unit; 491 int slave = rs->sc_slave; 492 u_char stat; 493 494 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 495 rs->sc_clear.c_cmd = C_CLEAR; 496 hpibsend(ctlr, slave, C_TCMD, &rs->sc_clear, sizeof(rs->sc_clear)); 497 hpibswait(ctlr, slave); 498 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 499 500 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 501 rs->sc_src.c_nop = C_NOP; 502 rs->sc_src.c_cmd = C_SREL; 503 rs->sc_src.c_param = C_REL; 504 hpibsend(ctlr, slave, C_CMD, &rs->sc_src, sizeof(rs->sc_src)); 505 hpibswait(ctlr, slave); 506 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 507 508 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 509 rs->sc_ssmc.c_cmd = C_SSM; 510 rs->sc_ssmc.c_refm = REF_MASK; 511 rs->sc_ssmc.c_fefm = FEF_MASK; 512 rs->sc_ssmc.c_aefm = AEF_MASK; 513 rs->sc_ssmc.c_iefm = IEF_MASK; 514 hpibsend(ctlr, slave, C_CMD, &rs->sc_ssmc, sizeof(rs->sc_ssmc)); 515 hpibswait(ctlr, slave); 516 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 517 #ifdef DEBUG 518 rs->sc_stats.rdresets++; 519 #endif 520 } 521 522 /* 523 * Read or constuct a disklabel 524 */ 525 int 526 rdgetinfo(dev) 527 dev_t dev; 528 { 529 int unit = rdunit(dev); 530 struct rd_softc *rs = rd_cd.cd_devs[unit]; 531 struct disklabel *lp = rs->sc_dkdev.dk_label; 532 struct partition *pi; 533 char *msg; 534 535 /* 536 * Set some default values to use while reading the label 537 * or to use if there isn't a label. 538 */ 539 memset((caddr_t)lp, 0, sizeof *lp); 540 lp->d_type = DTYPE_HPIB; 541 lp->d_secsize = DEV_BSIZE; 542 lp->d_nsectors = 32; 543 lp->d_ntracks = 20; 544 lp->d_ncylinders = 1; 545 lp->d_secpercyl = 32*20; 546 lp->d_npartitions = 3; 547 lp->d_partitions[2].p_offset = 0; 548 lp->d_partitions[2].p_size = LABELSECTOR+1; 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, ", rs->sc_dev.dv_xname, msg); 559 #ifdef COMPAT_NOLABEL 560 printf("using old default partitioning\n"); 561 rdmakedisklabel(unit, lp); 562 #else 563 printf("defining `c' partition as entire disk\n"); 564 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 565 /* XXX reset other info since readdisklabel screws with it */ 566 lp->d_npartitions = 3; 567 pi[0].p_size = 0; 568 #endif 569 return(0); 570 } 571 572 int 573 rdopen(dev, flags, mode, p) 574 dev_t dev; 575 int flags, mode; 576 struct proc *p; 577 { 578 int unit = rdunit(dev); 579 struct rd_softc *rs; 580 int error, mask, part; 581 582 if (unit >= rd_cd.cd_ndevs || 583 (rs = rd_cd.cd_devs[unit]) == NULL || 584 (rs->sc_flags & RDF_ALIVE) == 0) 585 return (ENXIO); 586 587 /* 588 * Wait for any pending opens/closes to complete 589 */ 590 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 591 (void) tsleep(rs, PRIBIO, "rdopen", 0); 592 593 /* 594 * On first open, get label and partition info. 595 * We may block reading the label, so be careful 596 * to stop any other opens. 597 */ 598 if (rs->sc_dkdev.dk_openmask == 0) { 599 rs->sc_flags |= RDF_OPENING; 600 error = rdgetinfo(dev); 601 rs->sc_flags &= ~RDF_OPENING; 602 wakeup((caddr_t)rs); 603 if (error) 604 return(error); 605 } 606 607 part = rdpart(dev); 608 mask = 1 << part; 609 610 /* Check that the partition exists. */ 611 if (part != RAW_PART && 612 (part > rs->sc_dkdev.dk_label->d_npartitions || 613 rs->sc_dkdev.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) 614 return (ENXIO); 615 616 /* Ensure only one open at a time. */ 617 switch (mode) { 618 case S_IFCHR: 619 rs->sc_dkdev.dk_copenmask |= mask; 620 break; 621 case S_IFBLK: 622 rs->sc_dkdev.dk_bopenmask |= mask; 623 break; 624 } 625 rs->sc_dkdev.dk_openmask = 626 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 627 628 return(0); 629 } 630 631 int 632 rdclose(dev, flag, mode, p) 633 dev_t dev; 634 int flag, mode; 635 struct proc *p; 636 { 637 int unit = rdunit(dev); 638 struct rd_softc *rs = rd_cd.cd_devs[unit]; 639 struct disk *dk = &rs->sc_dkdev; 640 int mask, s; 641 642 mask = 1 << rdpart(dev); 643 if (mode == S_IFCHR) 644 dk->dk_copenmask &= ~mask; 645 else 646 dk->dk_bopenmask &= ~mask; 647 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 648 /* 649 * On last close, we wait for all activity to cease since 650 * the label/parition info will become invalid. Since we 651 * might sleep, we must block any opens while we are here. 652 * Note we don't have to about other closes since we know 653 * we are the last one. 654 */ 655 if (dk->dk_openmask == 0) { 656 rs->sc_flags |= RDF_CLOSING; 657 s = splbio(); 658 while (rs->sc_active) { 659 rs->sc_flags |= RDF_WANTED; 660 (void) tsleep(&rs->sc_tab, PRIBIO, "rdclose", 0); 661 } 662 splx(s); 663 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 664 wakeup((caddr_t)rs); 665 } 666 return(0); 667 } 668 669 void 670 rdstrategy(bp) 671 struct buf *bp; 672 { 673 int unit = rdunit(bp->b_dev); 674 struct rd_softc *rs = rd_cd.cd_devs[unit]; 675 struct partition *pinfo; 676 daddr_t bn; 677 int sz, s; 678 int offset; 679 680 #ifdef DEBUG 681 if (rddebug & RDB_FOLLOW) 682 printf("rdstrategy(%p): dev %x, bn %x, bcount %lx, %c\n", 683 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 684 (bp->b_flags & B_READ) ? 'R' : 'W'); 685 #endif 686 bn = bp->b_blkno; 687 sz = howmany(bp->b_bcount, DEV_BSIZE); 688 pinfo = &rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 689 690 /* Don't perform partition translation on RAW_PART. */ 691 offset = (rdpart(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; 692 693 if (rdpart(bp->b_dev) != RAW_PART) { 694 /* 695 * XXX This block of code belongs in 696 * XXX bounds_check_with_label() 697 */ 698 699 if (bn < 0 || bn + sz > pinfo->p_size) { 700 sz = pinfo->p_size - bn; 701 if (sz == 0) { 702 bp->b_resid = bp->b_bcount; 703 goto done; 704 } 705 if (sz < 0) { 706 bp->b_error = EINVAL; 707 goto bad; 708 } 709 bp->b_bcount = dbtob(sz); 710 } 711 /* 712 * Check for write to write protected label 713 */ 714 if (bn + offset <= LABELSECTOR && 715 #if LABELSECTOR != 0 716 bn + offset + sz > LABELSECTOR && 717 #endif 718 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 719 bp->b_error = EROFS; 720 goto bad; 721 } 722 } 723 bp->b_rawblkno = bn + offset; 724 s = splbio(); 725 disksort_blkno(&rs->sc_tab, bp); 726 if (rs->sc_active == 0) { 727 rs->sc_active = 1; 728 rdustart(rs); 729 } 730 splx(s); 731 return; 732 bad: 733 bp->b_flags |= B_ERROR; 734 done: 735 biodone(bp); 736 } 737 738 /* 739 * Called from timeout() when handling maintenance releases 740 */ 741 void 742 rdrestart(arg) 743 void *arg; 744 { 745 int s = splbio(); 746 rdustart((struct rd_softc *)arg); 747 splx(s); 748 } 749 750 void 751 rdustart(rs) 752 struct rd_softc *rs; 753 { 754 struct buf *bp; 755 756 bp = BUFQ_FIRST(&rs->sc_tab); 757 rs->sc_addr = bp->b_data; 758 rs->sc_resid = bp->b_bcount; 759 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 760 rdstart(rs); 761 } 762 763 struct buf * 764 rdfinish(rs, bp) 765 struct rd_softc *rs; 766 struct buf *bp; 767 { 768 769 rs->sc_errcnt = 0; 770 BUFQ_REMOVE(&rs->sc_tab, bp); 771 bp->b_resid = 0; 772 biodone(bp); 773 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 774 if ((bp = BUFQ_FIRST(&rs->sc_tab)) != NULL) 775 return (bp); 776 rs->sc_active = 0; 777 if (rs->sc_flags & RDF_WANTED) { 778 rs->sc_flags &= ~RDF_WANTED; 779 wakeup((caddr_t)&rs->sc_tab); 780 } 781 return (NULL); 782 } 783 784 void 785 rdstart(arg) 786 void *arg; 787 { 788 struct rd_softc *rs = arg; 789 struct buf *bp = BUFQ_FIRST(&rs->sc_tab); 790 int part, ctlr, slave; 791 792 ctlr = rs->sc_dev.dv_parent->dv_unit; 793 slave = rs->sc_slave; 794 795 again: 796 #ifdef DEBUG 797 if (rddebug & RDB_FOLLOW) 798 printf("rdstart(%s): bp %p, %c\n", rs->sc_dev.dv_xname, bp, 799 (bp->b_flags & B_READ) ? 'R' : 'W'); 800 #endif 801 part = rdpart(bp->b_dev); 802 rs->sc_flags |= RDF_SEEK; 803 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 804 rs->sc_ioc.c_volume = C_SVOL(0); 805 rs->sc_ioc.c_saddr = C_SADDR; 806 rs->sc_ioc.c_hiaddr = 0; 807 rs->sc_ioc.c_addr = RDBTOS(bp->b_rawblkno); 808 rs->sc_ioc.c_nop2 = C_NOP; 809 rs->sc_ioc.c_slen = C_SLEN; 810 rs->sc_ioc.c_len = rs->sc_resid; 811 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 812 #ifdef DEBUG 813 if (rddebug & RDB_IO) 814 printf("rdstart: hpibsend(%x, %x, %x, %p, %x)\n", 815 ctlr, slave, C_CMD, 816 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 817 #endif 818 if (hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 819 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 820 821 /* Instrumentation. */ 822 disk_busy(&rs->sc_dkdev); 823 rs->sc_dkdev.dk_seek++; 824 825 #ifdef DEBUG 826 if (rddebug & RDB_IO) 827 printf("rdstart: hpibawait(%x)\n", ctlr); 828 #endif 829 hpibawait(ctlr); 830 return; 831 } 832 /* 833 * Experience has shown that the hpibwait in this hpibsend will 834 * occasionally timeout. It appears to occur mostly on old 7914 835 * drives with full maintenance tracks. We should probably 836 * integrate this with the backoff code in rderror. 837 */ 838 #ifdef DEBUG 839 if (rddebug & RDB_ERROR) 840 printf("%s: rdstart: cmd %x adr %lx blk %d len %d ecnt %d\n", 841 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 842 bp->b_blkno, rs->sc_resid, rs->sc_errcnt); 843 rs->sc_stats.rdretries++; 844 #endif 845 rs->sc_flags &= ~RDF_SEEK; 846 rdreset(rs); 847 if (rs->sc_errcnt++ < RDRETRY) 848 goto again; 849 printf("%s: rdstart err: cmd 0x%x sect %ld blk %d len %d\n", 850 rs->sc_dev.dv_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 851 bp->b_blkno, rs->sc_resid); 852 bp->b_flags |= B_ERROR; 853 bp->b_error = EIO; 854 bp = rdfinish(rs, bp); 855 if (bp) { 856 rs->sc_addr = bp->b_data; 857 rs->sc_resid = bp->b_bcount; 858 if (hpibreq(rs->sc_dev.dv_parent, &rs->sc_hq)) 859 goto again; 860 } 861 } 862 863 void 864 rdgo(arg) 865 void *arg; 866 { 867 struct rd_softc *rs = arg; 868 struct buf *bp = BUFQ_FIRST(&rs->sc_tab); 869 int rw, ctlr, slave; 870 871 ctlr = rs->sc_dev.dv_parent->dv_unit; 872 slave = rs->sc_slave; 873 874 rw = bp->b_flags & B_READ; 875 876 /* Instrumentation. */ 877 disk_busy(&rs->sc_dkdev); 878 879 #ifdef USELEDS 880 ledcontrol(0, 0, LED_DISK); 881 #endif 882 hpibgo(ctlr, slave, C_EXEC, rs->sc_addr, rs->sc_resid, rw, rw != 0); 883 } 884 885 /* ARGSUSED */ 886 void 887 rdintr(arg) 888 void *arg; 889 { 890 struct rd_softc *rs = arg; 891 int unit = rs->sc_dev.dv_unit; 892 struct buf *bp = BUFQ_FIRST(&rs->sc_tab); 893 u_char stat = 13; /* in case hpibrecv fails */ 894 int rv, restart, ctlr, slave; 895 896 ctlr = rs->sc_dev.dv_parent->dv_unit; 897 slave = rs->sc_slave; 898 899 #ifdef DEBUG 900 if (rddebug & RDB_FOLLOW) 901 printf("rdintr(%d): bp %p, %c, flags %x\n", unit, bp, 902 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 903 if (bp == NULL) { 904 printf("%s: bp == NULL\n", rs->sc_dev.dv_xname); 905 return; 906 } 907 #endif 908 disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid)); 909 910 if (rs->sc_flags & RDF_SEEK) { 911 rs->sc_flags &= ~RDF_SEEK; 912 if (hpibustart(ctlr)) 913 rdgo(rs); 914 return; 915 } 916 if ((rs->sc_flags & RDF_SWAIT) == 0) { 917 #ifdef DEBUG 918 rs->sc_stats.rdpolltries++; 919 #endif 920 if (hpibpptest(ctlr, slave) == 0) { 921 #ifdef DEBUG 922 rs->sc_stats.rdpollwaits++; 923 #endif 924 925 /* Instrumentation. */ 926 disk_busy(&rs->sc_dkdev); 927 rs->sc_flags |= RDF_SWAIT; 928 hpibawait(ctlr); 929 return; 930 } 931 } else 932 rs->sc_flags &= ~RDF_SWAIT; 933 rv = hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 934 if (rv != 1 || stat) { 935 #ifdef DEBUG 936 if (rddebug & RDB_ERROR) 937 printf("rdintr: recv failed or bad stat %d\n", stat); 938 #endif 939 restart = rderror(unit); 940 #ifdef DEBUG 941 rs->sc_stats.rdretries++; 942 #endif 943 if (rs->sc_errcnt++ < RDRETRY) { 944 if (restart) 945 rdstart(rs); 946 return; 947 } 948 bp->b_flags |= B_ERROR; 949 bp->b_error = EIO; 950 } 951 if (rdfinish(rs, bp)) 952 rdustart(rs); 953 #if NRND > 0 954 rnd_add_uint32(&rs->rnd_source, bp->b_blkno); 955 #endif 956 } 957 958 int 959 rdstatus(rs) 960 struct rd_softc *rs; 961 { 962 int c, s; 963 u_char stat; 964 int rv; 965 966 c = rs->sc_dev.dv_parent->dv_unit; 967 s = rs->sc_slave; 968 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 969 rs->sc_rsc.c_sram = C_SRAM; 970 rs->sc_rsc.c_ram = C_RAM; 971 rs->sc_rsc.c_cmd = C_STATUS; 972 memset((caddr_t)&rs->sc_stat, 0, sizeof(rs->sc_stat)); 973 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 974 if (rv != sizeof(rs->sc_rsc)) { 975 #ifdef DEBUG 976 if (rddebug & RDB_STATUS) 977 printf("rdstatus: send C_CMD failed %d != %d\n", 978 rv, sizeof(rs->sc_rsc)); 979 #endif 980 return(1); 981 } 982 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 983 if (rv != sizeof(rs->sc_stat)) { 984 #ifdef DEBUG 985 if (rddebug & RDB_STATUS) 986 printf("rdstatus: send C_EXEC failed %d != %d\n", 987 rv, sizeof(rs->sc_stat)); 988 #endif 989 return(1); 990 } 991 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 992 if (rv != 1 || stat) { 993 #ifdef DEBUG 994 if (rddebug & RDB_STATUS) 995 printf("rdstatus: recv failed %d or bad stat %d\n", 996 rv, stat); 997 #endif 998 return(1); 999 } 1000 return(0); 1001 } 1002 1003 /* 1004 * Deal with errors. 1005 * Returns 1 if request should be restarted, 1006 * 0 if we should just quietly give up. 1007 */ 1008 int 1009 rderror(unit) 1010 int unit; 1011 { 1012 struct rd_softc *rs = rd_cd.cd_devs[unit]; 1013 struct rd_stat *sp; 1014 struct buf *bp; 1015 daddr_t hwbn, pbn; 1016 char *hexstr __P((int, int)); /* XXX */ 1017 1018 if (rdstatus(rs)) { 1019 #ifdef DEBUG 1020 printf("%s: couldn't get status\n", rs->sc_dev.dv_xname); 1021 #endif 1022 rdreset(rs); 1023 return(1); 1024 } 1025 sp = &rs->sc_stat; 1026 if (sp->c_fef & FEF_REXMT) 1027 return(1); 1028 if (sp->c_fef & FEF_PF) { 1029 rdreset(rs); 1030 return(1); 1031 } 1032 /* 1033 * Unit requests release for internal maintenance. 1034 * We just delay awhile and try again later. Use expontially 1035 * increasing backoff ala ethernet drivers since we don't really 1036 * know how long the maintenance will take. With RDWAITC and 1037 * RDRETRY as defined, the range is 1 to 32 seconds. 1038 */ 1039 if (sp->c_fef & FEF_IMR) { 1040 extern int hz; 1041 int rdtimo = RDWAITC << rs->sc_errcnt; 1042 #ifdef DEBUG 1043 printf("%s: internal maintenance, %d second timeout\n", 1044 rs->sc_dev.dv_xname, rdtimo); 1045 rs->sc_stats.rdtimeouts++; 1046 #endif 1047 hpibfree(rs->sc_dev.dv_parent, &rs->sc_hq); 1048 callout_reset(&rs->sc_restart_ch, rdtimo * hz, rdrestart, rs); 1049 return(0); 1050 } 1051 /* 1052 * Only report error if we have reached the error reporting 1053 * threshhold. By default, this will only report after the 1054 * retry limit has been exceeded. 1055 */ 1056 if (rs->sc_errcnt < rderrthresh) 1057 return(1); 1058 1059 /* 1060 * First conjure up the block number at which the error occurred. 1061 * Note that not all errors report a block number, in that case 1062 * we just use b_blkno. 1063 */ 1064 bp = BUFQ_FIRST(&rs->sc_tab); 1065 pbn = rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 1066 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 1067 (sp->c_ief & IEF_RRMASK)) { 1068 hwbn = RDBTOS(pbn + bp->b_blkno); 1069 pbn = bp->b_blkno; 1070 } else { 1071 hwbn = sp->c_blk; 1072 pbn = RDSTOB(hwbn) - pbn; 1073 } 1074 /* 1075 * Now output a generic message suitable for badsect. 1076 * Note that we don't use harderr cuz it just prints 1077 * out b_blkno which is just the beginning block number 1078 * of the transfer, not necessary where the error occurred. 1079 */ 1080 printf("%s%c: hard error sn%d\n", rs->sc_dev.dv_xname, 1081 'a'+rdpart(bp->b_dev), pbn); 1082 /* 1083 * Now report the status as returned by the hardware with 1084 * attempt at interpretation (unless debugging). 1085 */ 1086 printf("%s %s error:", rs->sc_dev.dv_xname, 1087 (bp->b_flags & B_READ) ? "read" : "write"); 1088 #ifdef DEBUG 1089 if (rddebug & RDB_ERROR) { 1090 /* status info */ 1091 printf("\n volume: %d, unit: %d\n", 1092 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 1093 rdprinterr("reject", sp->c_ref, err_reject); 1094 rdprinterr("fault", sp->c_fef, err_fault); 1095 rdprinterr("access", sp->c_aef, err_access); 1096 rdprinterr("info", sp->c_ief, err_info); 1097 printf(" block: %d, P1-P10: ", hwbn); 1098 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1099 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1100 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1101 /* command */ 1102 printf(" ioc: "); 1103 printf("0x%x", *(u_int *)&rs->sc_ioc.c_pad); 1104 printf("0x%x", *(u_short *)&rs->sc_ioc.c_hiaddr); 1105 printf("0x%x", *(u_int *)&rs->sc_ioc.c_addr); 1106 printf("0x%x", *(u_short *)&rs->sc_ioc.c_nop2); 1107 printf("0x%x", *(u_int *)&rs->sc_ioc.c_len); 1108 printf("0x%x\n", *(u_short *)&rs->sc_ioc.c_cmd); 1109 return(1); 1110 } 1111 #endif 1112 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 1113 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 1114 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 1115 printf("P1-P10: "); 1116 printf("0x%x", *(u_int *)&sp->c_raw[0]); 1117 printf("0x%x", *(u_int *)&sp->c_raw[4]); 1118 printf("0x%x\n", *(u_short *)&sp->c_raw[8]); 1119 return(1); 1120 } 1121 1122 int 1123 rdread(dev, uio, flags) 1124 dev_t dev; 1125 struct uio *uio; 1126 int flags; 1127 { 1128 1129 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 1130 } 1131 1132 int 1133 rdwrite(dev, uio, flags) 1134 dev_t dev; 1135 struct uio *uio; 1136 int flags; 1137 { 1138 1139 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1140 } 1141 1142 int 1143 rdioctl(dev, cmd, data, flag, p) 1144 dev_t dev; 1145 u_long cmd; 1146 caddr_t data; 1147 int flag; 1148 struct proc *p; 1149 { 1150 int unit = rdunit(dev); 1151 struct rd_softc *sc = rd_cd.cd_devs[unit]; 1152 struct disklabel *lp = sc->sc_dkdev.dk_label; 1153 int error, flags; 1154 1155 switch (cmd) { 1156 case DIOCGDINFO: 1157 *(struct disklabel *)data = *lp; 1158 return (0); 1159 1160 case DIOCGPART: 1161 ((struct partinfo *)data)->disklab = lp; 1162 ((struct partinfo *)data)->part = 1163 &lp->d_partitions[rdpart(dev)]; 1164 return (0); 1165 1166 case DIOCWLABEL: 1167 if ((flag & FWRITE) == 0) 1168 return (EBADF); 1169 if (*(int *)data) 1170 sc->sc_flags |= RDF_WLABEL; 1171 else 1172 sc->sc_flags &= ~RDF_WLABEL; 1173 return (0); 1174 1175 case DIOCSDINFO: 1176 if ((flag & FWRITE) == 0) 1177 return (EBADF); 1178 return (setdisklabel(lp, (struct disklabel *)data, 1179 (sc->sc_flags & RDF_WLABEL) ? 0 1180 : sc->sc_dkdev.dk_openmask, 1181 (struct cpu_disklabel *)0)); 1182 1183 case DIOCWDINFO: 1184 if ((flag & FWRITE) == 0) 1185 return (EBADF); 1186 error = setdisklabel(lp, (struct disklabel *)data, 1187 (sc->sc_flags & RDF_WLABEL) ? 0 1188 : sc->sc_dkdev.dk_openmask, 1189 (struct cpu_disklabel *)0); 1190 if (error) 1191 return (error); 1192 flags = sc->sc_flags; 1193 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1194 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, 1195 (struct cpu_disklabel *)0); 1196 sc->sc_flags = flags; 1197 return (error); 1198 1199 case DIOCGDEFLABEL: 1200 rdgetdefaultlabel(sc, (struct disklabel *)data); 1201 return (0); 1202 } 1203 return(EINVAL); 1204 } 1205 1206 void 1207 rdgetdefaultlabel(sc, lp) 1208 struct rd_softc *sc; 1209 struct disklabel *lp; 1210 { 1211 int type = sc->sc_type; 1212 1213 memset((caddr_t)lp, 0, sizeof(struct disklabel)); 1214 1215 lp->d_type = DTYPE_HPIB; 1216 lp->d_secsize = rdidentinfo[type].ri_nbpt; 1217 lp->d_ntracks = rdidentinfo[type].ri_ntpc; 1218 lp->d_nsectors = rdidentinfo[type].ri_nblocks; 1219 lp->d_ncylinders = rdidentinfo[type].ri_ncyl; 1220 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1221 1222 strncpy(lp->d_typename, rdidentinfo[type].ri_desc, 16); 1223 strncpy(lp->d_packname, "fictitious", 16); 1224 lp->d_secperunit = lp->d_ncylinders * lp->d_secpercyl; 1225 lp->d_rpm = 3000; 1226 lp->d_interleave = 1; 1227 lp->d_flags = 0; 1228 1229 lp->d_partitions[RAW_PART].p_offset = 0; 1230 lp->d_partitions[RAW_PART].p_size = 1231 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1232 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1233 lp->d_npartitions = RAW_PART + 1; 1234 1235 lp->d_magic = DISKMAGIC; 1236 lp->d_magic2 = DISKMAGIC; 1237 lp->d_checksum = dkcksum(lp); 1238 } 1239 1240 int 1241 rdsize(dev) 1242 dev_t dev; 1243 { 1244 int unit = rdunit(dev); 1245 struct rd_softc *rs; 1246 int psize, didopen = 0; 1247 1248 if (unit >= rd_cd.cd_ndevs || 1249 (rs = rd_cd.cd_devs[unit]) == NULL || 1250 (rs->sc_flags & RDF_ALIVE) == 0) 1251 return (-1); 1252 1253 /* 1254 * We get called very early on (via swapconf) 1255 * without the device being open so we may need 1256 * to handle it here. 1257 */ 1258 if (rs->sc_dkdev.dk_openmask == 0) { 1259 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1260 return(-1); 1261 didopen = 1; 1262 } 1263 psize = rs->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size * 1264 (rs->sc_dkdev.dk_label->d_secsize / DEV_BSIZE); 1265 if (didopen) 1266 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1267 return (psize); 1268 } 1269 1270 #ifdef DEBUG 1271 void 1272 rdprinterr(str, err, tab) 1273 char *str; 1274 short err; 1275 char **tab; 1276 { 1277 int i; 1278 int printed; 1279 1280 if (err == 0) 1281 return; 1282 printf(" %s error %d field:", str, err); 1283 printed = 0; 1284 for (i = 0; i < 16; i++) 1285 if (err & (0x8000 >> i)) 1286 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1287 printf("\n"); 1288 } 1289 #endif 1290 1291 static int rddoingadump; /* simple mutex */ 1292 1293 /* 1294 * Non-interrupt driven, non-dma dump routine. 1295 */ 1296 int 1297 rddump(dev, blkno, va, size) 1298 dev_t dev; 1299 daddr_t blkno; 1300 caddr_t va; 1301 size_t size; 1302 { 1303 int sectorsize; /* size of a disk sector */ 1304 int nsects; /* number of sectors in partition */ 1305 int sectoff; /* sector offset of partition */ 1306 int totwrt; /* total number of sectors left to write */ 1307 int nwrt; /* current number of sectors to write */ 1308 int unit, part; 1309 int ctlr, slave; 1310 struct rd_softc *rs; 1311 struct disklabel *lp; 1312 char stat; 1313 1314 /* Check for recursive dump; if so, punt. */ 1315 if (rddoingadump) 1316 return (EFAULT); 1317 rddoingadump = 1; 1318 1319 /* Decompose unit and partition. */ 1320 unit = rdunit(dev); 1321 part = rdpart(dev); 1322 1323 /* Make sure dump device is ok. */ 1324 if (unit >= rd_cd.cd_ndevs || 1325 (rs = rd_cd.cd_devs[unit]) == NULL || 1326 (rs->sc_flags & RDF_ALIVE) == 0) 1327 return (ENXIO); 1328 1329 ctlr = rs->sc_dev.dv_parent->dv_unit; 1330 slave = rs->sc_slave; 1331 1332 /* 1333 * Convert to disk sectors. Request must be a multiple of size. 1334 */ 1335 lp = rs->sc_dkdev.dk_label; 1336 sectorsize = lp->d_secsize; 1337 if ((size % sectorsize) != 0) 1338 return (EFAULT); 1339 totwrt = size / sectorsize; 1340 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1341 1342 nsects = lp->d_partitions[part].p_size; 1343 sectoff = lp->d_partitions[part].p_offset; 1344 1345 /* Check transfer bounds against partition size. */ 1346 if ((blkno < 0) || (blkno + totwrt) > nsects) 1347 return (EINVAL); 1348 1349 /* Offset block number to start of partition. */ 1350 blkno += sectoff; 1351 1352 while (totwrt > 0) { 1353 nwrt = totwrt; /* XXX */ 1354 #ifndef RD_DUMP_NOT_TRUSTED 1355 /* 1356 * Fill out and send HPIB command. 1357 */ 1358 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1359 rs->sc_ioc.c_volume = C_SVOL(0); 1360 rs->sc_ioc.c_saddr = C_SADDR; 1361 rs->sc_ioc.c_hiaddr = 0; 1362 rs->sc_ioc.c_addr = RDBTOS(blkno); 1363 rs->sc_ioc.c_nop2 = C_NOP; 1364 rs->sc_ioc.c_slen = C_SLEN; 1365 rs->sc_ioc.c_len = nwrt * sectorsize; 1366 rs->sc_ioc.c_cmd = C_WRITE; 1367 hpibsend(ctlr, slave, C_CMD, &rs->sc_ioc.c_unit, 1368 sizeof(rs->sc_ioc)-2); 1369 if (hpibswait(ctlr, slave)) 1370 return (EIO); 1371 1372 /* 1373 * Send the data. 1374 */ 1375 hpibsend(ctlr, slave, C_EXEC, va, nwrt * sectorsize); 1376 (void) hpibswait(ctlr, slave); 1377 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 1378 if (stat) 1379 return (EIO); 1380 #else /* RD_DUMP_NOT_TRUSTED */ 1381 /* Let's just talk about this first... */ 1382 printf("%s: dump addr %p, blk %d\n", sc->sc_dev.dv_xname, 1383 va, blkno); 1384 delay(500 * 1000); /* half a second */ 1385 #endif /* RD_DUMP_NOT_TRUSTED */ 1386 1387 /* update block count */ 1388 totwrt -= nwrt; 1389 blkno += nwrt; 1390 va += sectorsize * nwrt; 1391 } 1392 rddoingadump = 0; 1393 return (0); 1394 } 1395
Indexes created Tue Sep 30 11:09:46 GMT 2025