1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1990, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * %sccs.include.redist.c% 11 * 12 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 13 * 14 * @(#)rd.c 8.4 (Berkeley) 05/10/95 15 */ 16 17 /* 18 * CS80/SS80 disk driver 19 */ 20 #include "rd.h" 21 #if NRD > 0 22 23 #include <sys/param.h> 24 #include <sys/systm.h> 25 #include <sys/buf.h> 26 #include <sys/stat.h> 27 #include <sys/dkstat.h> 28 #include <sys/disklabel.h> 29 #include <sys/ioctl.h> 30 #include <sys/fcntl.h> 31 32 #include <hp/dev/device.h> 33 #include <hp300/dev/rdreg.h> 34 #include <hp300/dev/rdvar.h> 35 #ifdef USELEDS 36 #include <hp300/hp300/led.h> 37 #endif 38 39 #include <vm/vm_param.h> 40 #include <sys/lock.h> 41 #include <vm/vm_prot.h> 42 #include <vm/pmap.h> 43 44 int rdinit(), rdstart(), rdgo(), rdintr(); 45 void rdstrategy(); 46 struct driver rddriver = { 47 rdinit, "rd", rdstart, rdgo, rdintr, 48 }; 49 50 struct rd_softc rd_softc[NRD]; 51 struct buf rdtab[NRD]; 52 int rderrthresh = RDRETRY-1; /* when to start reporting errors */ 53 54 #ifdef DEBUG 55 /* error message tables */ 56 char *err_reject[] = { 57 0, 0, 58 "channel parity error", /* 0x2000 */ 59 0, 0, 60 "illegal opcode", /* 0x0400 */ 61 "module addressing", /* 0x0200 */ 62 "address bounds", /* 0x0100 */ 63 "parameter bounds", /* 0x0080 */ 64 "illegal parameter", /* 0x0040 */ 65 "message sequence", /* 0x0020 */ 66 0, 67 "message length", /* 0x0008 */ 68 0, 0, 0 69 }; 70 71 char *err_fault[] = { 72 0, 73 "cross unit", /* 0x4000 */ 74 0, 75 "controller fault", /* 0x1000 */ 76 0, 0, 77 "unit fault", /* 0x0200 */ 78 0, 79 "diagnostic result", /* 0x0080 */ 80 0, 81 "operator release request", /* 0x0020 */ 82 "diagnostic release request", /* 0x0010 */ 83 "internal maintenance release request", /* 0x0008 */ 84 0, 85 "power fail", /* 0x0002 */ 86 "retransmit" /* 0x0001 */ 87 }; 88 89 char *err_access[] = { 90 "illegal parallel operation", /* 0x8000 */ 91 "uninitialized media", /* 0x4000 */ 92 "no spares available", /* 0x2000 */ 93 "not ready", /* 0x1000 */ 94 "write protect", /* 0x0800 */ 95 "no data found", /* 0x0400 */ 96 0, 0, 97 "unrecoverable data overflow", /* 0x0080 */ 98 "unrecoverable data", /* 0x0040 */ 99 0, 100 "end of file", /* 0x0010 */ 101 "end of volume", /* 0x0008 */ 102 0, 0, 0 103 }; 104 105 char *err_info[] = { 106 "operator release request", /* 0x8000 */ 107 "diagnostic release request", /* 0x4000 */ 108 "internal maintenance release request", /* 0x2000 */ 109 "media wear", /* 0x1000 */ 110 "latency induced", /* 0x0800 */ 111 0, 0, 112 "auto sparing invoked", /* 0x0100 */ 113 0, 114 "recoverable data overflow", /* 0x0040 */ 115 "marginal data", /* 0x0020 */ 116 "recoverable data", /* 0x0010 */ 117 0, 118 "maintenance track overflow", /* 0x0004 */ 119 0, 0 120 }; 121 122 struct rdstats rdstats[NRD]; 123 int rddebug = 0x80; 124 #define RDB_FOLLOW 0x01 125 #define RDB_STATUS 0x02 126 #define RDB_IDENT 0x04 127 #define RDB_IO 0x08 128 #define RDB_ASYNC 0x10 129 #define RDB_ERROR 0x80 130 #endif 131 132 /* 133 * Misc. HW description, indexed by sc_type. 134 * Nothing really critical here, could do without it. 135 */ 136 struct rdidentinfo rdidentinfo[] = { 137 { RD7946AID, 0, "7945A", 108416 }, 138 { RD9134DID, 1, "9134D", 29088 }, 139 { RD9134LID, 1, "9122S", 1232 }, 140 { RD7912PID, 0, "7912P", 128128 }, 141 { RD7914PID, 0, "7914P", 258048 }, 142 { RD7958AID, 0, "7958A", 255276 }, 143 { RD7957AID, 0, "7957A", 159544 }, 144 { RD7933HID, 0, "7933H", 789958 }, 145 { RD9134LID, 1, "9134L", 77840 }, 146 { RD7936HID, 0, "7936H", 600978 }, 147 { RD7937HID, 0, "7937H", 1116102 }, 148 { RD7914CTID, 0, "7914CT", 258048 }, 149 { RD7946AID, 0, "7946A", 108416 }, 150 { RD9134LID, 1, "9122D", 1232 }, 151 { RD7957BID, 0, "7957B", 159894 }, 152 { RD7958BID, 0, "7958B", 297108 }, 153 { RD7959BID, 0, "7959B", 594216 }, 154 { RD2200AID, 0, "2200A", 654948 }, 155 { RD2203AID, 0, "2203A", 1309896 } 156 }; 157 int numrdidentinfo = sizeof(rdidentinfo) / sizeof(rdidentinfo[0]); 158 159 rdinit(hd) 160 register struct hp_device *hd; 161 { 162 register struct rd_softc *rs = &rd_softc[hd->hp_unit]; 163 164 rs->sc_hd = hd; 165 rs->sc_punit = rdpunit(hd->hp_flags); 166 rs->sc_type = rdident(rs, hd); 167 if (rs->sc_type < 0) 168 return(0); 169 rs->sc_dq.dq_ctlr = hd->hp_ctlr; 170 rs->sc_dq.dq_unit = hd->hp_unit; 171 rs->sc_dq.dq_slave = hd->hp_slave; 172 rs->sc_dq.dq_driver = &rddriver; 173 rs->sc_flags = RDF_ALIVE; 174 #ifdef DEBUG 175 /* always report errors */ 176 if (rddebug & RDB_ERROR) 177 rderrthresh = 0; 178 #endif 179 return(1); 180 } 181 182 rdident(rs, hd) 183 struct rd_softc *rs; 184 struct hp_device *hd; 185 { 186 struct rd_describe desc; 187 u_char stat, cmd[3]; 188 int unit, lunit; 189 char name[7]; 190 register int ctlr, slave, id, i; 191 192 ctlr = hd->hp_ctlr; 193 slave = hd->hp_slave; 194 unit = rs->sc_punit; 195 lunit = hd->hp_unit; 196 197 /* 198 * Grab device id and make sure: 199 * 1. It is a CS80 device. 200 * 2. It is one of the types we support. 201 * 3. If it is a 7946, we are accessing the disk unit (0) 202 */ 203 id = hpibid(ctlr, slave); 204 #ifdef DEBUG 205 if (rddebug & RDB_IDENT) 206 printf("hpibid(%d, %d) -> %x\n", ctlr, slave, id); 207 #endif 208 if ((id & 0x200) == 0) 209 return(-1); 210 for (i = 0; i < numrdidentinfo; i++) 211 if (id == rdidentinfo[i].ri_hwid) 212 break; 213 if (i == numrdidentinfo || unit > rdidentinfo[i].ri_maxunum) 214 return(-1); 215 id = i; 216 217 /* 218 * Reset drive and collect device description. 219 * Don't really use the description info right now but 220 * might come in handy in the future (for disk labels). 221 */ 222 rdreset(rs, hd); 223 cmd[0] = C_SUNIT(unit); 224 cmd[1] = C_SVOL(0); 225 cmd[2] = C_DESC; 226 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 227 hpibrecv(ctlr, slave, C_EXEC, &desc, 37); 228 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 229 bzero(name, sizeof(name)); 230 if (!stat) { 231 register int n = desc.d_name; 232 for (i = 5; i >= 0; i--) { 233 name[i] = (n & 0xf) + '0'; 234 n >>= 4; 235 } 236 /* use drive characteristics to calculate xfer rate */ 237 rs->sc_wpms = 1000000 * (desc.d_sectsize/2) / desc.d_blocktime; 238 } 239 #ifdef DEBUG 240 if (rddebug & RDB_IDENT) { 241 printf("rd%d: name: %x ('%s')\n", 242 lunit, desc.d_name, name); 243 printf(" iuw %x, maxxfr %d, ctype %d\n", 244 desc.d_iuw, desc.d_cmaxxfr, desc.d_ctype); 245 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 246 desc.d_utype, desc.d_sectsize, 247 desc.d_blkbuf, desc.d_burstsize, desc.d_blocktime); 248 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 249 desc.d_uavexfr, desc.d_retry, desc.d_access, 250 desc.d_maxint, desc.d_fvbyte, desc.d_rvbyte); 251 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 252 desc.d_maxcyl, desc.d_maxhead, desc.d_maxsect, 253 desc.d_maxvsectl, desc.d_interleave); 254 } 255 #endif 256 /* 257 * Take care of a couple of anomolies: 258 * 1. 7945A and 7946A both return same HW id 259 * 2. 9122S and 9134D both return same HW id 260 * 3. 9122D and 9134L both return same HW id 261 */ 262 switch (rdidentinfo[id].ri_hwid) { 263 case RD7946AID: 264 if (bcmp(name, "079450", 6) == 0) 265 id = RD7945A; 266 else 267 id = RD7946A; 268 break; 269 270 case RD9134LID: 271 if (bcmp(name, "091340", 6) == 0) 272 id = RD9134L; 273 else 274 id = RD9122D; 275 break; 276 277 case RD9134DID: 278 if (bcmp(name, "091220", 6) == 0) 279 id = RD9122S; 280 else 281 id = RD9134D; 282 break; 283 } 284 printf("rd%d: %s\n", lunit, rdidentinfo[id].ri_desc); 285 return(id); 286 } 287 288 rdreset(rs, hd) 289 register struct rd_softc *rs; 290 register struct hp_device *hd; 291 { 292 u_char stat; 293 294 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 295 rs->sc_clear.c_cmd = C_CLEAR; 296 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &rs->sc_clear, 297 sizeof(rs->sc_clear)); 298 hpibswait(hd->hp_ctlr, hd->hp_slave); 299 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 300 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 301 rs->sc_src.c_nop = C_NOP; 302 rs->sc_src.c_cmd = C_SREL; 303 rs->sc_src.c_param = C_REL; 304 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_src, 305 sizeof(rs->sc_src)); 306 hpibswait(hd->hp_ctlr, hd->hp_slave); 307 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 308 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 309 rs->sc_ssmc.c_cmd = C_SSM; 310 rs->sc_ssmc.c_refm = REF_MASK; 311 rs->sc_ssmc.c_fefm = FEF_MASK; 312 rs->sc_ssmc.c_aefm = AEF_MASK; 313 rs->sc_ssmc.c_iefm = IEF_MASK; 314 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_ssmc, 315 sizeof(rs->sc_ssmc)); 316 hpibswait(hd->hp_ctlr, hd->hp_slave); 317 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 318 #ifdef DEBUG 319 rdstats[hd->hp_unit].rdresets++; 320 #endif 321 } 322 323 /* 324 * Read or constuct a disklabel 325 */ 326 int 327 rdgetinfo(dev) 328 dev_t dev; 329 { 330 int unit = rdunit(dev); 331 register struct rd_softc *rs = &rd_softc[unit]; 332 register struct disklabel *lp = &rs->sc_info.ri_label; 333 register struct partition *pi; 334 char *msg, *readdisklabel(); 335 336 /* 337 * Set some default values to use while reading the label 338 * or to use if there isn't a label. 339 */ 340 bzero((caddr_t)lp, sizeof *lp); 341 lp->d_type = DTYPE_HPIB; 342 lp->d_secsize = DEV_BSIZE; 343 lp->d_nsectors = 32; 344 lp->d_ntracks = 20; 345 lp->d_ncylinders = 1; 346 lp->d_secpercyl = 32*20; 347 lp->d_npartitions = 3; 348 lp->d_partitions[2].p_offset = 0; 349 lp->d_partitions[2].p_size = LABELSECTOR+1; 350 351 /* 352 * Now try to read the disklabel 353 */ 354 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp); 355 if (msg == NULL) 356 return(0); 357 358 pi = lp->d_partitions; 359 printf("rd%d: WARNING: %s, ", unit, msg); 360 #ifdef COMPAT_NOLABEL 361 printf("using old default partitioning\n"); 362 rdmakedisklabel(unit, lp); 363 #else 364 printf("defining `c' partition as entire disk\n"); 365 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 366 /* XXX reset other info since readdisklabel screws with it */ 367 lp->d_npartitions = 3; 368 pi[0].p_size = 0; 369 #endif 370 return(0); 371 } 372 373 int 374 rdopen(dev, flags, mode, p) 375 dev_t dev; 376 int flags, mode; 377 struct proc *p; 378 { 379 register int unit = rdunit(dev); 380 register struct rd_softc *rs = &rd_softc[unit]; 381 int error, mask; 382 383 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 384 return(ENXIO); 385 386 /* 387 * Wait for any pending opens/closes to complete 388 */ 389 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 390 sleep((caddr_t)rs, PRIBIO); 391 392 /* 393 * On first open, get label and partition info. 394 * We may block reading the label, so be careful 395 * to stop any other opens. 396 */ 397 if (rs->sc_info.ri_open == 0) { 398 rs->sc_flags |= RDF_OPENING; 399 error = rdgetinfo(dev); 400 rs->sc_flags &= ~RDF_OPENING; 401 wakeup((caddr_t)rs); 402 if (error) 403 return(error); 404 } 405 if (rs->sc_hd->hp_dk >= 0) { 406 /* guess at xfer rate based on 3600 rpm (60 rps) */ 407 if (rs->sc_wpms == 0) 408 rs->sc_wpms = 60 * rs->sc_info.ri_label.d_nsectors 409 * DEV_BSIZE / 2; 410 dk_wpms[rs->sc_hd->hp_dk] = rs->sc_wpms; 411 } 412 413 mask = 1 << rdpart(dev); 414 if (mode == S_IFCHR) 415 rs->sc_info.ri_copen |= mask; 416 else 417 rs->sc_info.ri_bopen |= mask; 418 rs->sc_info.ri_open |= mask; 419 return(0); 420 } 421 422 int 423 rdclose(dev, flag, mode, p) 424 dev_t dev; 425 int flag, mode; 426 struct proc *p; 427 { 428 int unit = rdunit(dev); 429 register struct rd_softc *rs = &rd_softc[unit]; 430 register struct rdinfo *ri = &rs->sc_info; 431 int mask, s; 432 433 mask = 1 << rdpart(dev); 434 if (mode == S_IFCHR) 435 ri->ri_copen &= ~mask; 436 else 437 ri->ri_bopen &= ~mask; 438 ri->ri_open = ri->ri_bopen | ri->ri_copen; 439 /* 440 * On last close, we wait for all activity to cease since 441 * the label/parition info will become invalid. Since we 442 * might sleep, we must block any opens while we are here. 443 * Note we don't have to about other closes since we know 444 * we are the last one. 445 */ 446 if (ri->ri_open == 0) { 447 rs->sc_flags |= RDF_CLOSING; 448 s = splbio(); 449 while (rdtab[unit].b_active) { 450 rs->sc_flags |= RDF_WANTED; 451 sleep((caddr_t)&rdtab[unit], PRIBIO); 452 } 453 splx(s); 454 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 455 wakeup((caddr_t)rs); 456 } 457 return(0); 458 } 459 460 void 461 rdstrategy(bp) 462 register struct buf *bp; 463 { 464 int unit = rdunit(bp->b_dev); 465 register struct rd_softc *rs = &rd_softc[unit]; 466 register struct buf *dp = &rdtab[unit]; 467 register struct partition *pinfo; 468 register daddr_t bn; 469 register int sz, s; 470 471 #ifdef DEBUG 472 if (rddebug & RDB_FOLLOW) 473 printf("rdstrategy(%x): dev %x, bn %x, bcount %x, %c\n", 474 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 475 (bp->b_flags & B_READ) ? 'R' : 'W'); 476 #endif 477 bn = bp->b_blkno; 478 sz = howmany(bp->b_bcount, DEV_BSIZE); 479 pinfo = &rs->sc_info.ri_label.d_partitions[rdpart(bp->b_dev)]; 480 if (bn < 0 || bn + sz > pinfo->p_size) { 481 sz = pinfo->p_size - bn; 482 if (sz == 0) { 483 bp->b_resid = bp->b_bcount; 484 goto done; 485 } 486 if (sz < 0) { 487 bp->b_error = EINVAL; 488 goto bad; 489 } 490 bp->b_bcount = dbtob(sz); 491 } 492 /* 493 * Check for write to write protected label 494 */ 495 if (bn + pinfo->p_offset <= LABELSECTOR && 496 #if LABELSECTOR != 0 497 bn + pinfo->p_offset + sz > LABELSECTOR && 498 #endif 499 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 500 bp->b_error = EROFS; 501 goto bad; 502 } 503 bp->b_cylin = bn + pinfo->p_offset; 504 s = splbio(); 505 disksort(dp, bp); 506 if (dp->b_active == 0) { 507 dp->b_active = 1; 508 rdustart(unit); 509 } 510 splx(s); 511 return; 512 bad: 513 bp->b_flags |= B_ERROR; 514 done: 515 biodone(bp); 516 } 517 518 /* 519 * Called from timeout() when handling maintenance releases 520 */ 521 void 522 rdrestart(arg) 523 void *arg; 524 { 525 int s = splbio(); 526 rdustart((int)arg); 527 splx(s); 528 } 529 530 rdustart(unit) 531 register int unit; 532 { 533 register struct buf *bp; 534 register struct rd_softc *rs = &rd_softc[unit]; 535 536 bp = rdtab[unit].b_actf; 537 rs->sc_addr = bp->b_un.b_addr; 538 rs->sc_resid = bp->b_bcount; 539 if (hpibreq(&rs->sc_dq)) 540 rdstart(unit); 541 } 542 543 struct buf * 544 rdfinish(unit, rs, bp) 545 int unit; 546 register struct rd_softc *rs; 547 register struct buf *bp; 548 { 549 register struct buf *dp = &rdtab[unit]; 550 551 dp->b_errcnt = 0; 552 dp->b_actf = bp->b_actf; 553 bp->b_resid = 0; 554 biodone(bp); 555 hpibfree(&rs->sc_dq); 556 if (dp->b_actf) 557 return(dp->b_actf); 558 dp->b_active = 0; 559 if (rs->sc_flags & RDF_WANTED) { 560 rs->sc_flags &= ~RDF_WANTED; 561 wakeup((caddr_t)dp); 562 } 563 return(NULL); 564 } 565 566 rdstart(unit) 567 register int unit; 568 { 569 register struct rd_softc *rs = &rd_softc[unit]; 570 register struct buf *bp = rdtab[unit].b_actf; 571 register struct hp_device *hp = rs->sc_hd; 572 register int part; 573 574 again: 575 #ifdef DEBUG 576 if (rddebug & RDB_FOLLOW) 577 printf("rdstart(%d): bp %x, %c\n", unit, bp, 578 (bp->b_flags & B_READ) ? 'R' : 'W'); 579 #endif 580 part = rdpart(bp->b_dev); 581 rs->sc_flags |= RDF_SEEK; 582 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 583 rs->sc_ioc.c_volume = C_SVOL(0); 584 rs->sc_ioc.c_saddr = C_SADDR; 585 rs->sc_ioc.c_hiaddr = 0; 586 rs->sc_ioc.c_addr = RDBTOS(bp->b_cylin); 587 rs->sc_ioc.c_nop2 = C_NOP; 588 rs->sc_ioc.c_slen = C_SLEN; 589 rs->sc_ioc.c_len = rs->sc_resid; 590 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 591 #ifdef DEBUG 592 if (rddebug & RDB_IO) 593 printf("rdstart: hpibsend(%x, %x, %x, %x, %x)\n", 594 hp->hp_ctlr, hp->hp_slave, C_CMD, 595 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 596 #endif 597 if (hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, &rs->sc_ioc.c_unit, 598 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 599 if (hp->hp_dk >= 0) { 600 dk_busy |= 1 << hp->hp_dk; 601 dk_seek[hp->hp_dk]++; 602 } 603 #ifdef DEBUG 604 if (rddebug & RDB_IO) 605 printf("rdstart: hpibawait(%x)\n", hp->hp_ctlr); 606 #endif 607 hpibawait(hp->hp_ctlr); 608 return; 609 } 610 /* 611 * Experience has shown that the hpibwait in this hpibsend will 612 * occasionally timeout. It appears to occur mostly on old 7914 613 * drives with full maintenance tracks. We should probably 614 * integrate this with the backoff code in rderror. 615 */ 616 #ifdef DEBUG 617 if (rddebug & RDB_ERROR) 618 printf("rd%d: rdstart: cmd %x adr %d blk %d len %d ecnt %d\n", 619 unit, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 620 bp->b_blkno, rs->sc_resid, rdtab[unit].b_errcnt); 621 rdstats[unit].rdretries++; 622 #endif 623 rs->sc_flags &= ~RDF_SEEK; 624 rdreset(rs, hp); 625 if (rdtab[unit].b_errcnt++ < RDRETRY) 626 goto again; 627 printf("rd%d: rdstart err: cmd 0x%x sect %d blk %d len %d\n", 628 unit, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 629 bp->b_blkno, rs->sc_resid); 630 bp->b_flags |= B_ERROR; 631 bp->b_error = EIO; 632 bp = rdfinish(unit, rs, bp); 633 if (bp) { 634 rs->sc_addr = bp->b_un.b_addr; 635 rs->sc_resid = bp->b_bcount; 636 if (hpibreq(&rs->sc_dq)) 637 goto again; 638 } 639 } 640 641 rdgo(unit) 642 register int unit; 643 { 644 register struct rd_softc *rs = &rd_softc[unit]; 645 register struct hp_device *hp = rs->sc_hd; 646 struct buf *bp = rdtab[unit].b_actf; 647 648 if (hp->hp_dk >= 0) { 649 dk_busy |= 1 << hp->hp_dk; 650 dk_xfer[hp->hp_dk]++; 651 dk_wds[hp->hp_dk] += rs->sc_resid >> 6; 652 } 653 #ifdef USELEDS 654 if (inledcontrol == 0) 655 ledcontrol(0, 0, LED_DISK); 656 #endif 657 hpibgo(hp->hp_ctlr, hp->hp_slave, C_EXEC, 658 rs->sc_addr, rs->sc_resid, bp->b_flags & B_READ); 659 } 660 661 rdintr(unit) 662 register int unit; 663 { 664 register struct rd_softc *rs = &rd_softc[unit]; 665 register struct buf *bp = rdtab[unit].b_actf; 666 register struct hp_device *hp = rs->sc_hd; 667 u_char stat = 13; /* in case hpibrecv fails */ 668 int rv, restart; 669 670 #ifdef DEBUG 671 if (rddebug & RDB_FOLLOW) 672 printf("rdintr(%d): bp %x, %c, flags %x\n", unit, bp, 673 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 674 if (bp == NULL) { 675 printf("rd%d: bp == NULL\n", unit); 676 return; 677 } 678 #endif 679 if (hp->hp_dk >= 0) 680 dk_busy &= ~(1 << hp->hp_dk); 681 if (rs->sc_flags & RDF_SEEK) { 682 rs->sc_flags &= ~RDF_SEEK; 683 if (hpibustart(hp->hp_ctlr)) 684 rdgo(unit); 685 return; 686 } 687 if ((rs->sc_flags & RDF_SWAIT) == 0) { 688 #ifdef DEBUG 689 rdstats[unit].rdpolltries++; 690 #endif 691 if (hpibpptest(hp->hp_ctlr, hp->hp_slave) == 0) { 692 #ifdef DEBUG 693 rdstats[unit].rdpollwaits++; 694 #endif 695 if (hp->hp_dk >= 0) 696 dk_busy |= 1 << hp->hp_dk; 697 rs->sc_flags |= RDF_SWAIT; 698 hpibawait(hp->hp_ctlr); 699 return; 700 } 701 } else 702 rs->sc_flags &= ~RDF_SWAIT; 703 rv = hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 704 if (rv != 1 || stat) { 705 #ifdef DEBUG 706 if (rddebug & RDB_ERROR) 707 printf("rdintr: recv failed or bad stat %d\n", stat); 708 #endif 709 restart = rderror(unit); 710 #ifdef DEBUG 711 rdstats[unit].rdretries++; 712 #endif 713 if (rdtab[unit].b_errcnt++ < RDRETRY) { 714 if (restart) 715 rdstart(unit); 716 return; 717 } 718 bp->b_flags |= B_ERROR; 719 bp->b_error = EIO; 720 } 721 if (rdfinish(unit, rs, bp)) 722 rdustart(unit); 723 } 724 725 rdstatus(rs) 726 register struct rd_softc *rs; 727 { 728 register int c, s; 729 u_char stat; 730 int rv; 731 732 c = rs->sc_hd->hp_ctlr; 733 s = rs->sc_hd->hp_slave; 734 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 735 rs->sc_rsc.c_sram = C_SRAM; 736 rs->sc_rsc.c_ram = C_RAM; 737 rs->sc_rsc.c_cmd = C_STATUS; 738 bzero((caddr_t)&rs->sc_stat, sizeof(rs->sc_stat)); 739 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 740 if (rv != sizeof(rs->sc_rsc)) { 741 #ifdef DEBUG 742 if (rddebug & RDB_STATUS) 743 printf("rdstatus: send C_CMD failed %d != %d\n", 744 rv, sizeof(rs->sc_rsc)); 745 #endif 746 return(1); 747 } 748 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 749 if (rv != sizeof(rs->sc_stat)) { 750 #ifdef DEBUG 751 if (rddebug & RDB_STATUS) 752 printf("rdstatus: send C_EXEC failed %d != %d\n", 753 rv, sizeof(rs->sc_stat)); 754 #endif 755 return(1); 756 } 757 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 758 if (rv != 1 || stat) { 759 #ifdef DEBUG 760 if (rddebug & RDB_STATUS) 761 printf("rdstatus: recv failed %d or bad stat %d\n", 762 rv, stat); 763 #endif 764 return(1); 765 } 766 return(0); 767 } 768 769 /* 770 * Deal with errors. 771 * Returns 1 if request should be restarted, 772 * 0 if we should just quietly give up. 773 */ 774 rderror(unit) 775 int unit; 776 { 777 struct rd_softc *rs = &rd_softc[unit]; 778 register struct rd_stat *sp; 779 struct buf *bp; 780 daddr_t hwbn, pbn; 781 782 if (rdstatus(rs)) { 783 #ifdef DEBUG 784 printf("rd%d: couldn't get status\n", unit); 785 #endif 786 rdreset(rs, rs->sc_hd); 787 return(1); 788 } 789 sp = &rs->sc_stat; 790 if (sp->c_fef & FEF_REXMT) 791 return(1); 792 if (sp->c_fef & FEF_PF) { 793 rdreset(rs, rs->sc_hd); 794 return(1); 795 } 796 /* 797 * Unit requests release for internal maintenance. 798 * We just delay awhile and try again later. Use expontially 799 * increasing backoff ala ethernet drivers since we don't really 800 * know how long the maintenance will take. With RDWAITC and 801 * RDRETRY as defined, the range is 1 to 32 seconds. 802 */ 803 if (sp->c_fef & FEF_IMR) { 804 extern int hz; 805 int rdtimo = RDWAITC << rdtab[unit].b_errcnt; 806 #ifdef DEBUG 807 printf("rd%d: internal maintenance, %d second timeout\n", 808 unit, rdtimo); 809 rdstats[unit].rdtimeouts++; 810 #endif 811 hpibfree(&rs->sc_dq); 812 timeout(rdrestart, (void *)unit, rdtimo * hz); 813 return(0); 814 } 815 /* 816 * Only report error if we have reached the error reporting 817 * threshhold. By default, this will only report after the 818 * retry limit has been exceeded. 819 */ 820 if (rdtab[unit].b_errcnt < rderrthresh) 821 return(1); 822 823 /* 824 * First conjure up the block number at which the error occured. 825 * Note that not all errors report a block number, in that case 826 * we just use b_blkno. 827 */ 828 bp = rdtab[unit].b_actf; 829 pbn = rs->sc_info.ri_label.d_partitions[rdpart(bp->b_dev)].p_offset; 830 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 831 (sp->c_ief & IEF_RRMASK)) { 832 hwbn = RDBTOS(pbn + bp->b_blkno); 833 pbn = bp->b_blkno; 834 } else { 835 hwbn = sp->c_blk; 836 pbn = RDSTOB(hwbn) - pbn; 837 } 838 /* 839 * Now output a generic message suitable for badsect. 840 * Note that we don't use harderr cuz it just prints 841 * out b_blkno which is just the beginning block number 842 * of the transfer, not necessary where the error occured. 843 */ 844 printf("rd%d%c: hard error sn%d\n", 845 rdunit(bp->b_dev), 'a'+rdpart(bp->b_dev), pbn); 846 /* 847 * Now report the status as returned by the hardware with 848 * attempt at interpretation (unless debugging). 849 */ 850 printf("rd%d %s error:", 851 unit, (bp->b_flags & B_READ) ? "read" : "write"); 852 #ifdef DEBUG 853 if (rddebug & RDB_ERROR) { 854 /* status info */ 855 printf("\n volume: %d, unit: %d\n", 856 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 857 rdprinterr("reject", sp->c_ref, err_reject); 858 rdprinterr("fault", sp->c_fef, err_fault); 859 rdprinterr("access", sp->c_aef, err_access); 860 rdprinterr("info", sp->c_ief, err_info); 861 printf(" block: %d, P1-P10: ", hwbn); 862 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 863 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 864 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 865 /* command */ 866 printf(" ioc: "); 867 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_pad, 8)); 868 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_hiaddr, 4)); 869 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_addr, 8)); 870 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_nop2, 4)); 871 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_len, 8)); 872 printf("%s\n", hexstr(*(u_short *)&rs->sc_ioc.c_cmd, 4)); 873 return(1); 874 } 875 #endif 876 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 877 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 878 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 879 printf("P1-P10: "); 880 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 881 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 882 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 883 return(1); 884 } 885 886 int 887 rdread(dev, uio, flags) 888 dev_t dev; 889 struct uio *uio; 890 int flags; 891 { 892 893 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 894 } 895 896 int 897 rdwrite(dev, uio, flags) 898 dev_t dev; 899 struct uio *uio; 900 int flags; 901 { 902 903 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 904 } 905 906 int 907 rdioctl(dev, cmd, data, flag, p) 908 dev_t dev; 909 u_long cmd; 910 caddr_t data; 911 int flag; 912 struct proc *p; 913 { 914 int unit = rdunit(dev); 915 register struct rd_softc *sc = &rd_softc[unit]; 916 register struct disklabel *lp = &sc->sc_info.ri_label; 917 int error, flags; 918 919 switch (cmd) { 920 case DIOCGDINFO: 921 *(struct disklabel *)data = *lp; 922 return (0); 923 924 case DIOCGPART: 925 ((struct partinfo *)data)->disklab = lp; 926 ((struct partinfo *)data)->part = 927 &lp->d_partitions[rdpart(dev)]; 928 return (0); 929 930 case DIOCWLABEL: 931 if ((flag & FWRITE) == 0) 932 return (EBADF); 933 if (*(int *)data) 934 sc->sc_flags |= RDF_WLABEL; 935 else 936 sc->sc_flags &= ~RDF_WLABEL; 937 return (0); 938 939 case DIOCSDINFO: 940 if ((flag & FWRITE) == 0) 941 return (EBADF); 942 return (setdisklabel(lp, (struct disklabel *)data, 943 (sc->sc_flags & RDF_WLABEL) ? 0 944 : sc->sc_info.ri_open)); 945 946 case DIOCWDINFO: 947 if ((flag & FWRITE) == 0) 948 return (EBADF); 949 error = setdisklabel(lp, (struct disklabel *)data, 950 (sc->sc_flags & RDF_WLABEL) ? 0 951 : sc->sc_info.ri_open); 952 if (error) 953 return (error); 954 flags = sc->sc_flags; 955 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 956 error = writedisklabel(rdlabdev(dev), rdstrategy, lp); 957 sc->sc_flags = flags; 958 return (error); 959 } 960 return(EINVAL); 961 } 962 963 int 964 rdsize(dev) 965 dev_t dev; 966 { 967 register int unit = rdunit(dev); 968 register struct rd_softc *rs = &rd_softc[unit]; 969 int psize, didopen = 0; 970 971 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 972 return(-1); 973 974 /* 975 * We get called very early on (via swapconf) 976 * without the device being open so we may need 977 * to handle it here. 978 */ 979 if (rs->sc_info.ri_open == 0) { 980 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 981 return(-1); 982 didopen = 1; 983 } 984 psize = rs->sc_info.ri_label.d_partitions[rdpart(dev)].p_size; 985 if (didopen) 986 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 987 return (psize); 988 } 989 990 #ifdef DEBUG 991 rdprinterr(str, err, tab) 992 char *str; 993 short err; 994 char *tab[]; 995 { 996 register int i; 997 int printed; 998 999 if (err == 0) 1000 return; 1001 printf(" %s error field:", str, err); 1002 printed = 0; 1003 for (i = 0; i < 16; i++) 1004 if (err & (0x8000 >> i)) 1005 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1006 printf("\n"); 1007 } 1008 #endif 1009 1010 /* 1011 * Non-interrupt driven, non-dma dump routine. 1012 */ 1013 int 1014 rddump(dev) 1015 dev_t dev; 1016 { 1017 int part = rdpart(dev); 1018 int unit = rdunit(dev); 1019 register struct rd_softc *rs = &rd_softc[unit]; 1020 register struct hp_device *hp = rs->sc_hd; 1021 register struct partition *pinfo; 1022 register daddr_t baddr; 1023 register int maddr, pages, i; 1024 char stat; 1025 extern int lowram, dumpsize; 1026 #ifdef DEBUG 1027 extern int pmapdebug; 1028 pmapdebug = 0; 1029 #endif 1030 1031 /* is drive ok? */ 1032 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 1033 return (ENXIO); 1034 pinfo = &rs->sc_info.ri_label.d_partitions[part]; 1035 /* dump parameters in range? */ 1036 if (dumplo < 0 || dumplo >= pinfo->p_size || 1037 pinfo->p_fstype != FS_SWAP) 1038 return (EINVAL); 1039 pages = dumpsize; 1040 if (dumplo + ctod(pages) > pinfo->p_size) 1041 pages = dtoc(pinfo->p_size - dumplo); 1042 maddr = lowram; 1043 baddr = dumplo + pinfo->p_offset; 1044 /* HPIB idle? */ 1045 if (!hpibreq(&rs->sc_dq)) { 1046 hpibreset(hp->hp_ctlr); 1047 rdreset(rs, rs->sc_hd); 1048 printf("[ drive %d reset ] ", unit); 1049 } 1050 for (i = 0; i < pages; i++) { 1051 #define NPGMB (1024*1024/NBPG) 1052 /* print out how many Mbs we have dumped */ 1053 if (i && (i % NPGMB) == 0) 1054 printf("%d ", i / NPGMB); 1055 #undef NPBMG 1056 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1057 rs->sc_ioc.c_volume = C_SVOL(0); 1058 rs->sc_ioc.c_saddr = C_SADDR; 1059 rs->sc_ioc.c_hiaddr = 0; 1060 rs->sc_ioc.c_addr = RDBTOS(baddr); 1061 rs->sc_ioc.c_nop2 = C_NOP; 1062 rs->sc_ioc.c_slen = C_SLEN; 1063 rs->sc_ioc.c_len = NBPG; 1064 rs->sc_ioc.c_cmd = C_WRITE; 1065 hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, 1066 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 1067 if (hpibswait(hp->hp_ctlr, hp->hp_slave)) 1068 return (EIO); 1069 pmap_enter(kernel_pmap, (vm_offset_t)vmmap, maddr, 1070 VM_PROT_READ, TRUE); 1071 hpibsend(hp->hp_ctlr, hp->hp_slave, C_EXEC, vmmap, NBPG); 1072 (void) hpibswait(hp->hp_ctlr, hp->hp_slave); 1073 hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 1074 if (stat) 1075 return (EIO); 1076 maddr += NBPG; 1077 baddr += ctod(1); 1078 } 1079 return (0); 1080 } 1081 #endif 1082