1 /* $NetBSD: rd.c,v 1.25 1996/10/14 07:14:19 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 41 * 42 * @(#)rd.c 8.2 (Berkeley) 5/19/94 43 */ 44 45 /* 46 * CS80/SS80 disk driver 47 */ 48 #include "rd.h" 49 #if NRD > 0 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/buf.h> 54 #include <sys/stat.h> 55 #include <sys/disklabel.h> 56 #include <sys/disk.h> 57 #include <sys/ioctl.h> 58 #include <sys/fcntl.h> 59 60 #include <hp300/dev/device.h> 61 #include <hp300/dev/rdreg.h> 62 #include <hp300/dev/rdvar.h> 63 #ifdef USELEDS 64 #include <hp300/hp300/led.h> 65 #endif 66 67 #include <vm/vm_param.h> 68 #include <vm/lock.h> 69 #include <vm/vm_prot.h> 70 #include <vm/pmap.h> 71 72 int rdmatch(), rdstart(), rdgo(), rdintr(); 73 void rdattach(), rdstrategy(); 74 struct driver rddriver = { 75 rdmatch, rdattach, "rd", rdstart, rdgo, rdintr, 76 }; 77 78 struct rd_softc rd_softc[NRD]; 79 struct buf rdtab[NRD]; 80 int rderrthresh = RDRETRY-1; /* when to start reporting errors */ 81 82 #ifdef DEBUG 83 /* error message tables */ 84 char *err_reject[] = { 85 0, 0, 86 "channel parity error", /* 0x2000 */ 87 0, 0, 88 "illegal opcode", /* 0x0400 */ 89 "module addressing", /* 0x0200 */ 90 "address bounds", /* 0x0100 */ 91 "parameter bounds", /* 0x0080 */ 92 "illegal parameter", /* 0x0040 */ 93 "message sequence", /* 0x0020 */ 94 0, 95 "message length", /* 0x0008 */ 96 0, 0, 0 97 }; 98 99 char *err_fault[] = { 100 0, 101 "cross unit", /* 0x4000 */ 102 0, 103 "controller fault", /* 0x1000 */ 104 0, 0, 105 "unit fault", /* 0x0200 */ 106 0, 107 "diagnostic result", /* 0x0080 */ 108 0, 109 "operator release request", /* 0x0020 */ 110 "diagnostic release request", /* 0x0010 */ 111 "internal maintenance release request", /* 0x0008 */ 112 0, 113 "power fail", /* 0x0002 */ 114 "retransmit" /* 0x0001 */ 115 }; 116 117 char *err_access[] = { 118 "illegal parallel operation", /* 0x8000 */ 119 "uninitialized media", /* 0x4000 */ 120 "no spares available", /* 0x2000 */ 121 "not ready", /* 0x1000 */ 122 "write protect", /* 0x0800 */ 123 "no data found", /* 0x0400 */ 124 0, 0, 125 "unrecoverable data overflow", /* 0x0080 */ 126 "unrecoverable data", /* 0x0040 */ 127 0, 128 "end of file", /* 0x0010 */ 129 "end of volume", /* 0x0008 */ 130 0, 0, 0 131 }; 132 133 char *err_info[] = { 134 "operator release request", /* 0x8000 */ 135 "diagnostic release request", /* 0x4000 */ 136 "internal maintenance release request", /* 0x2000 */ 137 "media wear", /* 0x1000 */ 138 "latency induced", /* 0x0800 */ 139 0, 0, 140 "auto sparing invoked", /* 0x0100 */ 141 0, 142 "recoverable data overflow", /* 0x0040 */ 143 "marginal data", /* 0x0020 */ 144 "recoverable data", /* 0x0010 */ 145 0, 146 "maintenance track overflow", /* 0x0004 */ 147 0, 0 148 }; 149 150 struct rdstats rdstats[NRD]; 151 int rddebug = 0x80; 152 #define RDB_FOLLOW 0x01 153 #define RDB_STATUS 0x02 154 #define RDB_IDENT 0x04 155 #define RDB_IO 0x08 156 #define RDB_ASYNC 0x10 157 #define RDB_ERROR 0x80 158 #endif 159 160 /* 161 * Misc. HW description, indexed by sc_type. 162 * Nothing really critical here, could do without it. 163 */ 164 struct rdidentinfo rdidentinfo[] = { 165 { RD7946AID, 0, "7945A", NRD7945ABPT, 166 NRD7945ATRK, 968, 108416 }, 167 168 { RD9134DID, 1, "9134D", NRD9134DBPT, 169 NRD9134DTRK, 303, 29088 }, 170 171 { RD9134LID, 1, "9122S", NRD9122SBPT, 172 NRD9122STRK, 77, 1232 }, 173 174 { RD7912PID, 0, "7912P", NRD7912PBPT, 175 NRD7912PTRK, 572, 128128 }, 176 177 { RD7914PID, 0, "7914P", NRD7914PBPT, 178 NRD7914PTRK, 1152, 258048 }, 179 180 { RD7958AID, 0, "7958A", NRD7958ABPT, 181 NRD7958ATRK, 1013, 255276 }, 182 183 { RD7957AID, 0, "7957A", NRD7957ABPT, 184 NRD7957ATRK, 1036, 159544 }, 185 186 { RD7933HID, 0, "7933H", NRD7933HBPT, 187 NRD7933HTRK, 1321, 789958 }, 188 189 { RD9134LID, 1, "9134L", NRD9134LBPT, 190 NRD9134LTRK, 973, 77840 }, 191 192 { RD7936HID, 0, "7936H", NRD7936HBPT, 193 NRD7936HTRK, 698, 600978 }, 194 195 { RD7937HID, 0, "7937H", NRD7937HBPT, 196 NRD7937HTRK, 698, 1116102 }, 197 198 { RD7914CTID, 0, "7914CT", NRD7914PBPT, 199 NRD7914PTRK, 1152, 258048 }, 200 201 { RD7946AID, 0, "7946A", NRD7945ABPT, 202 NRD7945ATRK, 968, 108416 }, 203 204 { RD9134LID, 1, "9122D", NRD9122SBPT, 205 NRD9122STRK, 77, 1232 }, 206 207 { RD7957BID, 0, "7957B", NRD7957BBPT, 208 NRD7957BTRK, 1269, 159894 }, 209 210 { RD7958BID, 0, "7958B", NRD7958BBPT, 211 NRD7958BTRK, 786, 297108 }, 212 213 { RD7959BID, 0, "7959B", NRD7959BBPT, 214 NRD7959BTRK, 1572, 594216 }, 215 216 { RD2200AID, 0, "2200A", NRD2200ABPT, 217 NRD2200ATRK, 1449, 654948 }, 218 219 { RD2203AID, 0, "2203A", NRD2203ABPT, 220 NRD2203ATRK, 1449, 1309896 } 221 }; 222 int numrdidentinfo = sizeof(rdidentinfo) / sizeof(rdidentinfo[0]); 223 224 int 225 rdmatch(hd) 226 register struct hp_device *hd; 227 { 228 register struct rd_softc *rs = &rd_softc[hd->hp_unit]; 229 230 rs->sc_hd = hd; 231 rs->sc_punit = rdpunit(hd->hp_flags); 232 rs->sc_type = rdident(rs, hd, 0); 233 if (rs->sc_type < 0) { 234 /* 235 * XXX Some ancient drives may be slow to respond, so 236 * probe them again. 237 */ 238 DELAY(10000); 239 rs->sc_type = rdident(rs, hd, 0); 240 if (rs->sc_type < 0) 241 return (0); 242 } 243 244 /* XXX set up the external name */ 245 bzero(rs->sc_xname, sizeof(rs->sc_xname)); 246 sprintf(rs->sc_xname, "rd%d", hd->hp_unit); 247 248 /* 249 * Initialize and attach the disk structure. 250 */ 251 bzero(&rs->sc_dkdev, sizeof(rs->sc_dkdev)); 252 rs->sc_dkdev.dk_name = rs->sc_xname; 253 disk_attach(&rs->sc_dkdev); 254 255 return (1); 256 } 257 258 void 259 rdattach(hd) 260 register struct hp_device *hd; 261 { 262 register struct rd_softc *rs = &rd_softc[hd->hp_unit]; 263 264 (void)rdident(rs, hd, 1); /* XXX Ick. */ 265 266 rs->sc_dq.dq_softc = rs; 267 rs->sc_dq.dq_ctlr = hd->hp_ctlr; 268 rs->sc_dq.dq_unit = hd->hp_unit; 269 rs->sc_dq.dq_slave = hd->hp_slave; 270 rs->sc_dq.dq_driver = &rddriver; 271 rs->sc_flags = RDF_ALIVE; 272 #ifdef DEBUG 273 /* always report errors */ 274 if (rddebug & RDB_ERROR) 275 rderrthresh = 0; 276 #endif 277 278 /* XXX Set device class. */ 279 hd->hp_dev.dv_class = DV_DISK; 280 } 281 282 int 283 rdident(rs, hd, verbose) 284 struct rd_softc *rs; 285 struct hp_device *hd; 286 int verbose; 287 { 288 struct rd_describe *desc = &rs->sc_rddesc; 289 u_char stat, cmd[3]; 290 int unit, lunit; 291 char name[7]; 292 register int ctlr, slave, id, i; 293 294 ctlr = hd->hp_ctlr; 295 slave = hd->hp_slave; 296 unit = rs->sc_punit; 297 lunit = hd->hp_unit; 298 299 /* 300 * Grab device id and make sure: 301 * 1. It is a CS80 device. 302 * 2. It is one of the types we support. 303 * 3. If it is a 7946, we are accessing the disk unit (0) 304 */ 305 id = hpibid(ctlr, slave); 306 #ifdef DEBUG 307 if (rddebug & RDB_IDENT) 308 printf("hpibid(%d, %d) -> %x\n", ctlr, slave, id); 309 #endif 310 if ((id & 0x200) == 0) 311 return(-1); 312 for (i = 0; i < numrdidentinfo; i++) 313 if (id == rdidentinfo[i].ri_hwid) 314 break; 315 if (i == numrdidentinfo || unit > rdidentinfo[i].ri_maxunum) 316 return(-1); 317 id = i; 318 319 /* 320 * Reset drive and collect device description. 321 * Don't really use the description info right now but 322 * might come in handy in the future (for disk labels). 323 */ 324 rdreset(rs, hd); 325 cmd[0] = C_SUNIT(unit); 326 cmd[1] = C_SVOL(0); 327 cmd[2] = C_DESC; 328 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 329 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 330 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 331 bzero(name, sizeof(name)); 332 if (!stat) { 333 register int n = desc->d_name; 334 for (i = 5; i >= 0; i--) { 335 name[i] = (n & 0xf) + '0'; 336 n >>= 4; 337 } 338 } 339 #ifdef DEBUG 340 if (rddebug & RDB_IDENT) { 341 printf("rd%d: name: %x ('%s')\n", 342 lunit, desc->d_name, name); 343 printf(" iuw %x, maxxfr %d, ctype %d\n", 344 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 345 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 346 desc->d_utype, desc->d_sectsize, 347 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 348 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 349 desc->d_uavexfr, desc->d_retry, desc->d_access, 350 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 351 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 352 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 353 desc->d_maxvsectl, desc->d_interleave); 354 } 355 #endif 356 /* 357 * Take care of a couple of anomolies: 358 * 1. 7945A and 7946A both return same HW id 359 * 2. 9122S and 9134D both return same HW id 360 * 3. 9122D and 9134L both return same HW id 361 */ 362 switch (rdidentinfo[id].ri_hwid) { 363 case RD7946AID: 364 if (bcmp(name, "079450", 6) == 0) 365 id = RD7945A; 366 else 367 id = RD7946A; 368 break; 369 370 case RD9134LID: 371 if (bcmp(name, "091340", 6) == 0) 372 id = RD9134L; 373 else 374 id = RD9122D; 375 break; 376 377 case RD9134DID: 378 if (bcmp(name, "091220", 6) == 0) 379 id = RD9122S; 380 else 381 id = RD9134D; 382 break; 383 } 384 /* 385 * XXX We use DEV_BSIZE instead of the sector size value pulled 386 * off the driver because all of this code assumes 512 byte 387 * blocks. ICK! 388 */ 389 if (verbose) { 390 printf(": %s\n", rdidentinfo[id].ri_desc); 391 printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", 392 rs->sc_hd->hp_xname, rdidentinfo[id].ri_ncyl, 393 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 394 DEV_BSIZE); 395 } 396 return(id); 397 } 398 399 rdreset(rs, hd) 400 register struct rd_softc *rs; 401 register struct hp_device *hd; 402 { 403 u_char stat; 404 405 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 406 rs->sc_clear.c_cmd = C_CLEAR; 407 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &rs->sc_clear, 408 sizeof(rs->sc_clear)); 409 hpibswait(hd->hp_ctlr, hd->hp_slave); 410 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 411 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 412 rs->sc_src.c_nop = C_NOP; 413 rs->sc_src.c_cmd = C_SREL; 414 rs->sc_src.c_param = C_REL; 415 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_src, 416 sizeof(rs->sc_src)); 417 hpibswait(hd->hp_ctlr, hd->hp_slave); 418 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 419 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 420 rs->sc_ssmc.c_cmd = C_SSM; 421 rs->sc_ssmc.c_refm = REF_MASK; 422 rs->sc_ssmc.c_fefm = FEF_MASK; 423 rs->sc_ssmc.c_aefm = AEF_MASK; 424 rs->sc_ssmc.c_iefm = IEF_MASK; 425 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_ssmc, 426 sizeof(rs->sc_ssmc)); 427 hpibswait(hd->hp_ctlr, hd->hp_slave); 428 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 429 #ifdef DEBUG 430 rdstats[hd->hp_unit].rdresets++; 431 #endif 432 } 433 434 /* 435 * Read or constuct a disklabel 436 */ 437 int 438 rdgetinfo(dev) 439 dev_t dev; 440 { 441 int unit = rdunit(dev); 442 register struct rd_softc *rs = &rd_softc[unit]; 443 register struct disklabel *lp = rs->sc_dkdev.dk_label; 444 register struct partition *pi; 445 char *msg, *readdisklabel(); 446 447 /* 448 * Set some default values to use while reading the label 449 * or to use if there isn't a label. 450 */ 451 bzero((caddr_t)lp, sizeof *lp); 452 lp->d_type = DTYPE_HPIB; 453 lp->d_secsize = DEV_BSIZE; 454 lp->d_nsectors = 32; 455 lp->d_ntracks = 20; 456 lp->d_ncylinders = 1; 457 lp->d_secpercyl = 32*20; 458 lp->d_npartitions = 3; 459 lp->d_partitions[2].p_offset = 0; 460 lp->d_partitions[2].p_size = LABELSECTOR+1; 461 462 /* 463 * Now try to read the disklabel 464 */ 465 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 466 if (msg == NULL) 467 return(0); 468 469 pi = lp->d_partitions; 470 printf("%s: WARNING: %s, ", rs->sc_hd->hp_xname, msg); 471 #ifdef COMPAT_NOLABEL 472 printf("using old default partitioning\n"); 473 rdmakedisklabel(unit, lp); 474 #else 475 printf("defining `c' partition as entire disk\n"); 476 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 477 /* XXX reset other info since readdisklabel screws with it */ 478 lp->d_npartitions = 3; 479 pi[0].p_size = 0; 480 #endif 481 return(0); 482 } 483 484 int 485 rdopen(dev, flags, mode, p) 486 dev_t dev; 487 int flags, mode; 488 struct proc *p; 489 { 490 register int unit = rdunit(dev); 491 register struct rd_softc *rs = &rd_softc[unit]; 492 int error, mask; 493 494 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 495 return(ENXIO); 496 497 /* 498 * Wait for any pending opens/closes to complete 499 */ 500 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 501 sleep((caddr_t)rs, PRIBIO); 502 503 /* 504 * On first open, get label and partition info. 505 * We may block reading the label, so be careful 506 * to stop any other opens. 507 */ 508 if (rs->sc_dkdev.dk_openmask == 0) { 509 rs->sc_flags |= RDF_OPENING; 510 error = rdgetinfo(dev); 511 rs->sc_flags &= ~RDF_OPENING; 512 wakeup((caddr_t)rs); 513 if (error) 514 return(error); 515 } 516 517 mask = 1 << rdpart(dev); 518 if (mode == S_IFCHR) 519 rs->sc_dkdev.dk_copenmask |= mask; 520 else 521 rs->sc_dkdev.dk_bopenmask |= mask; 522 rs->sc_dkdev.dk_openmask |= mask; 523 return(0); 524 } 525 526 int 527 rdclose(dev, flag, mode, p) 528 dev_t dev; 529 int flag, mode; 530 struct proc *p; 531 { 532 int unit = rdunit(dev); 533 register struct rd_softc *rs = &rd_softc[unit]; 534 register struct disk *dk = &rs->sc_dkdev; 535 int mask, s; 536 537 mask = 1 << rdpart(dev); 538 if (mode == S_IFCHR) 539 dk->dk_copenmask &= ~mask; 540 else 541 dk->dk_bopenmask &= ~mask; 542 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 543 /* 544 * On last close, we wait for all activity to cease since 545 * the label/parition info will become invalid. Since we 546 * might sleep, we must block any opens while we are here. 547 * Note we don't have to about other closes since we know 548 * we are the last one. 549 */ 550 if (dk->dk_openmask == 0) { 551 rs->sc_flags |= RDF_CLOSING; 552 s = splbio(); 553 while (rdtab[unit].b_active) { 554 rs->sc_flags |= RDF_WANTED; 555 sleep((caddr_t)&rdtab[unit], PRIBIO); 556 } 557 splx(s); 558 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 559 wakeup((caddr_t)rs); 560 } 561 return(0); 562 } 563 564 void 565 rdstrategy(bp) 566 register struct buf *bp; 567 { 568 int unit = rdunit(bp->b_dev); 569 register struct rd_softc *rs = &rd_softc[unit]; 570 register struct buf *dp = &rdtab[unit]; 571 register struct partition *pinfo; 572 register daddr_t bn; 573 register int sz, s; 574 575 #ifdef DEBUG 576 if (rddebug & RDB_FOLLOW) 577 printf("rdstrategy(%x): dev %x, bn %x, bcount %x, %c\n", 578 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 579 (bp->b_flags & B_READ) ? 'R' : 'W'); 580 #endif 581 bn = bp->b_blkno; 582 sz = howmany(bp->b_bcount, DEV_BSIZE); 583 pinfo = &rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 584 if (bn < 0 || bn + sz > pinfo->p_size) { 585 sz = pinfo->p_size - bn; 586 if (sz == 0) { 587 bp->b_resid = bp->b_bcount; 588 goto done; 589 } 590 if (sz < 0) { 591 bp->b_error = EINVAL; 592 goto bad; 593 } 594 bp->b_bcount = dbtob(sz); 595 } 596 /* 597 * Check for write to write protected label 598 */ 599 if (bn + pinfo->p_offset <= LABELSECTOR && 600 #if LABELSECTOR != 0 601 bn + pinfo->p_offset + sz > LABELSECTOR && 602 #endif 603 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 604 bp->b_error = EROFS; 605 goto bad; 606 } 607 bp->b_cylin = bn + pinfo->p_offset; 608 s = splbio(); 609 disksort(dp, bp); 610 if (dp->b_active == 0) { 611 dp->b_active = 1; 612 rdustart(unit); 613 } 614 splx(s); 615 return; 616 bad: 617 bp->b_flags |= B_ERROR; 618 done: 619 biodone(bp); 620 } 621 622 /* 623 * Called from timeout() when handling maintenance releases 624 */ 625 void 626 rdrestart(arg) 627 void *arg; 628 { 629 int s = splbio(); 630 rdustart((int)arg); 631 splx(s); 632 } 633 634 rdustart(unit) 635 register int unit; 636 { 637 register struct buf *bp; 638 register struct rd_softc *rs = &rd_softc[unit]; 639 640 bp = rdtab[unit].b_actf; 641 rs->sc_addr = bp->b_un.b_addr; 642 rs->sc_resid = bp->b_bcount; 643 if (hpibreq(&rs->sc_dq)) 644 rdstart(unit); 645 } 646 647 struct buf * 648 rdfinish(unit, rs, bp) 649 int unit; 650 register struct rd_softc *rs; 651 register struct buf *bp; 652 { 653 register struct buf *dp = &rdtab[unit]; 654 655 dp->b_errcnt = 0; 656 dp->b_actf = bp->b_actf; 657 bp->b_resid = 0; 658 biodone(bp); 659 hpibfree(&rs->sc_dq); 660 if (dp->b_actf) 661 return(dp->b_actf); 662 dp->b_active = 0; 663 if (rs->sc_flags & RDF_WANTED) { 664 rs->sc_flags &= ~RDF_WANTED; 665 wakeup((caddr_t)dp); 666 } 667 return(NULL); 668 } 669 670 rdstart(unit) 671 register int unit; 672 { 673 register struct rd_softc *rs = &rd_softc[unit]; 674 register struct buf *bp = rdtab[unit].b_actf; 675 register struct hp_device *hp = rs->sc_hd; 676 register int part; 677 678 again: 679 #ifdef DEBUG 680 if (rddebug & RDB_FOLLOW) 681 printf("rdstart(%d): bp %x, %c\n", unit, bp, 682 (bp->b_flags & B_READ) ? 'R' : 'W'); 683 #endif 684 part = rdpart(bp->b_dev); 685 rs->sc_flags |= RDF_SEEK; 686 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 687 rs->sc_ioc.c_volume = C_SVOL(0); 688 rs->sc_ioc.c_saddr = C_SADDR; 689 rs->sc_ioc.c_hiaddr = 0; 690 rs->sc_ioc.c_addr = RDBTOS(bp->b_cylin); 691 rs->sc_ioc.c_nop2 = C_NOP; 692 rs->sc_ioc.c_slen = C_SLEN; 693 rs->sc_ioc.c_len = rs->sc_resid; 694 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 695 #ifdef DEBUG 696 if (rddebug & RDB_IO) 697 printf("rdstart: hpibsend(%x, %x, %x, %x, %x)\n", 698 hp->hp_ctlr, hp->hp_slave, C_CMD, 699 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 700 #endif 701 if (hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, &rs->sc_ioc.c_unit, 702 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 703 704 /* Instrumentation. */ 705 disk_busy(&rs->sc_dkdev); 706 rs->sc_dkdev.dk_seek++; 707 708 #ifdef DEBUG 709 if (rddebug & RDB_IO) 710 printf("rdstart: hpibawait(%x)\n", hp->hp_ctlr); 711 #endif 712 hpibawait(hp->hp_ctlr); 713 return; 714 } 715 /* 716 * Experience has shown that the hpibwait in this hpibsend will 717 * occasionally timeout. It appears to occur mostly on old 7914 718 * drives with full maintenance tracks. We should probably 719 * integrate this with the backoff code in rderror. 720 */ 721 #ifdef DEBUG 722 if (rddebug & RDB_ERROR) 723 printf("%s: rdstart: cmd %x adr %d blk %d len %d ecnt %d\n", 724 rs->sc_hd->hp_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 725 bp->b_blkno, rs->sc_resid, rdtab[unit].b_errcnt); 726 rdstats[unit].rdretries++; 727 #endif 728 rs->sc_flags &= ~RDF_SEEK; 729 rdreset(rs, hp); 730 if (rdtab[unit].b_errcnt++ < RDRETRY) 731 goto again; 732 printf("%s: rdstart err: cmd 0x%x sect %d blk %d len %d\n", 733 rs->sc_hd->hp_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 734 bp->b_blkno, rs->sc_resid); 735 bp->b_flags |= B_ERROR; 736 bp->b_error = EIO; 737 bp = rdfinish(unit, rs, bp); 738 if (bp) { 739 rs->sc_addr = bp->b_un.b_addr; 740 rs->sc_resid = bp->b_bcount; 741 if (hpibreq(&rs->sc_dq)) 742 goto again; 743 } 744 } 745 746 rdgo(unit) 747 register int unit; 748 { 749 register struct rd_softc *rs = &rd_softc[unit]; 750 register struct hp_device *hp = rs->sc_hd; 751 struct buf *bp = rdtab[unit].b_actf; 752 int rw; 753 754 rw = bp->b_flags & B_READ; 755 756 /* Instrumentation. */ 757 disk_busy(&rs->sc_dkdev); 758 759 #ifdef USELEDS 760 if (inledcontrol == 0) 761 ledcontrol(0, 0, LED_DISK); 762 #endif 763 hpibgo(hp->hp_ctlr, hp->hp_slave, C_EXEC, 764 rs->sc_addr, rs->sc_resid, rw, rw != 0); 765 } 766 767 rdintr(arg) 768 void *arg; 769 { 770 register struct rd_softc *rs = arg; 771 int unit = rs->sc_hd->hp_unit; 772 register struct buf *bp = rdtab[unit].b_actf; 773 register struct hp_device *hp = rs->sc_hd; 774 u_char stat = 13; /* in case hpibrecv fails */ 775 int rv, restart; 776 777 #ifdef DEBUG 778 if (rddebug & RDB_FOLLOW) 779 printf("rdintr(%d): bp %x, %c, flags %x\n", unit, bp, 780 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 781 if (bp == NULL) { 782 printf("%s: bp == NULL\n", rs->sc_hd->hp_xname); 783 return; 784 } 785 #endif 786 disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid)); 787 788 if (rs->sc_flags & RDF_SEEK) { 789 rs->sc_flags &= ~RDF_SEEK; 790 if (hpibustart(hp->hp_ctlr)) 791 rdgo(unit); 792 return; 793 } 794 if ((rs->sc_flags & RDF_SWAIT) == 0) { 795 #ifdef DEBUG 796 rdstats[unit].rdpolltries++; 797 #endif 798 if (hpibpptest(hp->hp_ctlr, hp->hp_slave) == 0) { 799 #ifdef DEBUG 800 rdstats[unit].rdpollwaits++; 801 #endif 802 803 /* Instrumentation. */ 804 disk_busy(&rs->sc_dkdev); 805 rs->sc_flags |= RDF_SWAIT; 806 hpibawait(hp->hp_ctlr); 807 return; 808 } 809 } else 810 rs->sc_flags &= ~RDF_SWAIT; 811 rv = hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 812 if (rv != 1 || stat) { 813 #ifdef DEBUG 814 if (rddebug & RDB_ERROR) 815 printf("rdintr: recv failed or bad stat %d\n", stat); 816 #endif 817 restart = rderror(unit); 818 #ifdef DEBUG 819 rdstats[unit].rdretries++; 820 #endif 821 if (rdtab[unit].b_errcnt++ < RDRETRY) { 822 if (restart) 823 rdstart(unit); 824 return; 825 } 826 bp->b_flags |= B_ERROR; 827 bp->b_error = EIO; 828 } 829 if (rdfinish(unit, rs, bp)) 830 rdustart(unit); 831 } 832 833 rdstatus(rs) 834 register struct rd_softc *rs; 835 { 836 register int c, s; 837 u_char stat; 838 int rv; 839 840 c = rs->sc_hd->hp_ctlr; 841 s = rs->sc_hd->hp_slave; 842 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 843 rs->sc_rsc.c_sram = C_SRAM; 844 rs->sc_rsc.c_ram = C_RAM; 845 rs->sc_rsc.c_cmd = C_STATUS; 846 bzero((caddr_t)&rs->sc_stat, sizeof(rs->sc_stat)); 847 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 848 if (rv != sizeof(rs->sc_rsc)) { 849 #ifdef DEBUG 850 if (rddebug & RDB_STATUS) 851 printf("rdstatus: send C_CMD failed %d != %d\n", 852 rv, sizeof(rs->sc_rsc)); 853 #endif 854 return(1); 855 } 856 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 857 if (rv != sizeof(rs->sc_stat)) { 858 #ifdef DEBUG 859 if (rddebug & RDB_STATUS) 860 printf("rdstatus: send C_EXEC failed %d != %d\n", 861 rv, sizeof(rs->sc_stat)); 862 #endif 863 return(1); 864 } 865 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 866 if (rv != 1 || stat) { 867 #ifdef DEBUG 868 if (rddebug & RDB_STATUS) 869 printf("rdstatus: recv failed %d or bad stat %d\n", 870 rv, stat); 871 #endif 872 return(1); 873 } 874 return(0); 875 } 876 877 /* 878 * Deal with errors. 879 * Returns 1 if request should be restarted, 880 * 0 if we should just quietly give up. 881 */ 882 rderror(unit) 883 int unit; 884 { 885 struct rd_softc *rs = &rd_softc[unit]; 886 register struct rd_stat *sp; 887 struct buf *bp; 888 daddr_t hwbn, pbn; 889 890 if (rdstatus(rs)) { 891 #ifdef DEBUG 892 printf("%s: couldn't get status\n", rs->sc_hd->hp_xname); 893 #endif 894 rdreset(rs, rs->sc_hd); 895 return(1); 896 } 897 sp = &rs->sc_stat; 898 if (sp->c_fef & FEF_REXMT) 899 return(1); 900 if (sp->c_fef & FEF_PF) { 901 rdreset(rs, rs->sc_hd); 902 return(1); 903 } 904 /* 905 * Unit requests release for internal maintenance. 906 * We just delay awhile and try again later. Use expontially 907 * increasing backoff ala ethernet drivers since we don't really 908 * know how long the maintenance will take. With RDWAITC and 909 * RDRETRY as defined, the range is 1 to 32 seconds. 910 */ 911 if (sp->c_fef & FEF_IMR) { 912 extern int hz; 913 int rdtimo = RDWAITC << rdtab[unit].b_errcnt; 914 #ifdef DEBUG 915 printf("%s: internal maintenance, %d second timeout\n", 916 rs->sc_hd->hp_xname, rdtimo); 917 rdstats[unit].rdtimeouts++; 918 #endif 919 hpibfree(&rs->sc_dq); 920 timeout(rdrestart, (void *)unit, rdtimo * hz); 921 return(0); 922 } 923 /* 924 * Only report error if we have reached the error reporting 925 * threshhold. By default, this will only report after the 926 * retry limit has been exceeded. 927 */ 928 if (rdtab[unit].b_errcnt < rderrthresh) 929 return(1); 930 931 /* 932 * First conjure up the block number at which the error occured. 933 * Note that not all errors report a block number, in that case 934 * we just use b_blkno. 935 */ 936 bp = rdtab[unit].b_actf; 937 pbn = rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 938 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 939 (sp->c_ief & IEF_RRMASK)) { 940 hwbn = RDBTOS(pbn + bp->b_blkno); 941 pbn = bp->b_blkno; 942 } else { 943 hwbn = sp->c_blk; 944 pbn = RDSTOB(hwbn) - pbn; 945 } 946 /* 947 * Now output a generic message suitable for badsect. 948 * Note that we don't use harderr cuz it just prints 949 * out b_blkno which is just the beginning block number 950 * of the transfer, not necessary where the error occured. 951 */ 952 printf("rd%d%c: hard error sn%d\n", 953 rdunit(bp->b_dev), 'a'+rdpart(bp->b_dev), pbn); 954 /* 955 * Now report the status as returned by the hardware with 956 * attempt at interpretation (unless debugging). 957 */ 958 printf("rd%d %s error:", 959 unit, (bp->b_flags & B_READ) ? "read" : "write"); 960 #ifdef DEBUG 961 if (rddebug & RDB_ERROR) { 962 /* status info */ 963 printf("\n volume: %d, unit: %d\n", 964 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 965 rdprinterr("reject", sp->c_ref, err_reject); 966 rdprinterr("fault", sp->c_fef, err_fault); 967 rdprinterr("access", sp->c_aef, err_access); 968 rdprinterr("info", sp->c_ief, err_info); 969 printf(" block: %d, P1-P10: ", hwbn); 970 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 971 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 972 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 973 /* command */ 974 printf(" ioc: "); 975 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_pad, 8)); 976 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_hiaddr, 4)); 977 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_addr, 8)); 978 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_nop2, 4)); 979 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_len, 8)); 980 printf("%s\n", hexstr(*(u_short *)&rs->sc_ioc.c_cmd, 4)); 981 return(1); 982 } 983 #endif 984 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 985 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 986 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 987 printf("P1-P10: "); 988 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 989 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 990 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 991 return(1); 992 } 993 994 int 995 rdread(dev, uio, flags) 996 dev_t dev; 997 struct uio *uio; 998 int flags; 999 { 1000 1001 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 1002 } 1003 1004 int 1005 rdwrite(dev, uio, flags) 1006 dev_t dev; 1007 struct uio *uio; 1008 int flags; 1009 { 1010 1011 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1012 } 1013 1014 int 1015 rdioctl(dev, cmd, data, flag, p) 1016 dev_t dev; 1017 int cmd; 1018 caddr_t data; 1019 int flag; 1020 struct proc *p; 1021 { 1022 int unit = rdunit(dev); 1023 register struct rd_softc *sc = &rd_softc[unit]; 1024 register struct disklabel *lp = sc->sc_dkdev.dk_label; 1025 int error, flags; 1026 1027 switch (cmd) { 1028 case DIOCGDINFO: 1029 *(struct disklabel *)data = *lp; 1030 return (0); 1031 1032 case DIOCGPART: 1033 ((struct partinfo *)data)->disklab = lp; 1034 ((struct partinfo *)data)->part = 1035 &lp->d_partitions[rdpart(dev)]; 1036 return (0); 1037 1038 case DIOCWLABEL: 1039 if ((flag & FWRITE) == 0) 1040 return (EBADF); 1041 if (*(int *)data) 1042 sc->sc_flags |= RDF_WLABEL; 1043 else 1044 sc->sc_flags &= ~RDF_WLABEL; 1045 return (0); 1046 1047 case DIOCSDINFO: 1048 if ((flag & FWRITE) == 0) 1049 return (EBADF); 1050 return (setdisklabel(lp, (struct disklabel *)data, 1051 (sc->sc_flags & RDF_WLABEL) ? 0 1052 : sc->sc_dkdev.dk_openmask, 1053 (struct cpu_disklabel *)0)); 1054 1055 case DIOCWDINFO: 1056 if ((flag & FWRITE) == 0) 1057 return (EBADF); 1058 error = setdisklabel(lp, (struct disklabel *)data, 1059 (sc->sc_flags & RDF_WLABEL) ? 0 1060 : sc->sc_dkdev.dk_openmask, 1061 (struct cpu_disklabel *)0); 1062 if (error) 1063 return (error); 1064 flags = sc->sc_flags; 1065 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1066 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, 1067 (struct cpu_disklabel *)0); 1068 sc->sc_flags = flags; 1069 return (error); 1070 } 1071 return(EINVAL); 1072 } 1073 1074 int 1075 rdsize(dev) 1076 dev_t dev; 1077 { 1078 register int unit = rdunit(dev); 1079 register struct rd_softc *rs = &rd_softc[unit]; 1080 int psize, didopen = 0; 1081 1082 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 1083 return(-1); 1084 1085 /* 1086 * We get called very early on (via swapconf) 1087 * without the device being open so we may need 1088 * to handle it here. 1089 */ 1090 if (rs->sc_dkdev.dk_openmask == 0) { 1091 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1092 return(-1); 1093 didopen = 1; 1094 } 1095 psize = rs->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size; 1096 if (didopen) 1097 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1098 return (psize); 1099 } 1100 1101 #ifdef DEBUG 1102 rdprinterr(str, err, tab) 1103 char *str; 1104 short err; 1105 char *tab[]; 1106 { 1107 register int i; 1108 int printed; 1109 1110 if (err == 0) 1111 return; 1112 printf(" %s error field:", str, err); 1113 printed = 0; 1114 for (i = 0; i < 16; i++) 1115 if (err & (0x8000 >> i)) 1116 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1117 printf("\n"); 1118 } 1119 #endif 1120 1121 static int rddoingadump; /* simple mutex */ 1122 1123 /* 1124 * Non-interrupt driven, non-dma dump routine. 1125 */ 1126 int 1127 rddump(dev, blkno, va, size) 1128 dev_t dev; 1129 daddr_t blkno; 1130 caddr_t va; 1131 size_t size; 1132 { 1133 int sectorsize; /* size of a disk sector */ 1134 int nsects; /* number of sectors in partition */ 1135 int sectoff; /* sector offset of partition */ 1136 int totwrt; /* total number of sectors left to write */ 1137 int nwrt; /* current number of sectors to write */ 1138 int unit, part; 1139 struct rd_softc *rs; 1140 struct hp_device *hp; 1141 struct disklabel *lp; 1142 char stat; 1143 1144 /* Check for recursive dump; if so, punt. */ 1145 if (rddoingadump) 1146 return (EFAULT); 1147 rddoingadump = 1; 1148 1149 /* Decompose unit and partition. */ 1150 unit = rdunit(dev); 1151 part = rdpart(dev); 1152 1153 /* Make sure dump device is ok. */ 1154 if (unit >= NRD) 1155 return (ENXIO); 1156 rs = &rd_softc[unit]; 1157 if ((rs->sc_flags & RDF_ALIVE) == 0) 1158 return (ENXIO); 1159 hp = rs->sc_hd; 1160 1161 /* 1162 * Convert to disk sectors. Request must be a multiple of size. 1163 */ 1164 lp = rs->sc_dkdev.dk_label; 1165 sectorsize = lp->d_secsize; 1166 if ((size % sectorsize) != 0) 1167 return (EFAULT); 1168 totwrt = size / sectorsize; 1169 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1170 1171 nsects = lp->d_partitions[part].p_size; 1172 sectoff = lp->d_partitions[part].p_offset; 1173 1174 /* Check transfer bounds against partition size. */ 1175 if ((blkno < 0) || (blkno + totwrt) > nsects) 1176 return (EINVAL); 1177 1178 /* Offset block number to start of partition. */ 1179 blkno += sectoff; 1180 1181 while (totwrt > 0) { 1182 nwrt = totwrt; /* XXX */ 1183 #ifndef RD_DUMP_NOT_TRUSTED 1184 /* 1185 * Fill out and send HPIB command. 1186 */ 1187 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1188 rs->sc_ioc.c_volume = C_SVOL(0); 1189 rs->sc_ioc.c_saddr = C_SADDR; 1190 rs->sc_ioc.c_hiaddr = 0; 1191 rs->sc_ioc.c_addr = RDBTOS(blkno); 1192 rs->sc_ioc.c_nop2 = C_NOP; 1193 rs->sc_ioc.c_slen = C_SLEN; 1194 rs->sc_ioc.c_len = nwrt * sectorsize; 1195 rs->sc_ioc.c_cmd = C_WRITE; 1196 hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, 1197 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 1198 if (hpibswait(hp->hp_ctlr, hp->hp_slave)) 1199 return (EIO); 1200 1201 /* 1202 * Send the data. 1203 */ 1204 hpibsend(hp->hp_ctlr, hp->hp_slave, C_EXEC, va, 1205 nwrt * sectorsize); 1206 (void) hpibswait(hp->hp_ctlr, hp->hp_slave); 1207 hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 1208 if (stat) 1209 return (EIO); 1210 #else /* RD_DUMP_NOT_TRUSTED */ 1211 /* Let's just talk about this first... */ 1212 printf("%s: dump addr %p, blk %d\n", hp->hp_xname, 1213 va, blkno); 1214 delay(500 * 1000); /* half a second */ 1215 #endif /* RD_DUMP_NOT_TRUSTED */ 1216 1217 /* update block count */ 1218 totwrt -= nwrt; 1219 blkno += nwrt; 1220 va += sectorsize * nwrt; 1221 } 1222 rddoingadump = 0; 1223 return (0); 1224 } 1225 #endif 1226