1 /* $NetBSD: rd.c,v 1.21 1996/06/06 16:17:41 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 } 278 279 int 280 rdident(rs, hd, verbose) 281 struct rd_softc *rs; 282 struct hp_device *hd; 283 int verbose; 284 { 285 struct rd_describe *desc = &rs->sc_rddesc; 286 u_char stat, cmd[3]; 287 int unit, lunit; 288 char name[7]; 289 register int ctlr, slave, id, i; 290 291 ctlr = hd->hp_ctlr; 292 slave = hd->hp_slave; 293 unit = rs->sc_punit; 294 lunit = hd->hp_unit; 295 296 /* 297 * Grab device id and make sure: 298 * 1. It is a CS80 device. 299 * 2. It is one of the types we support. 300 * 3. If it is a 7946, we are accessing the disk unit (0) 301 */ 302 id = hpibid(ctlr, slave); 303 #ifdef DEBUG 304 if (rddebug & RDB_IDENT) 305 printf("hpibid(%d, %d) -> %x\n", ctlr, slave, id); 306 #endif 307 if ((id & 0x200) == 0) 308 return(-1); 309 for (i = 0; i < numrdidentinfo; i++) 310 if (id == rdidentinfo[i].ri_hwid) 311 break; 312 if (i == numrdidentinfo || unit > rdidentinfo[i].ri_maxunum) 313 return(-1); 314 id = i; 315 316 /* 317 * Reset drive and collect device description. 318 * Don't really use the description info right now but 319 * might come in handy in the future (for disk labels). 320 */ 321 rdreset(rs, hd); 322 cmd[0] = C_SUNIT(unit); 323 cmd[1] = C_SVOL(0); 324 cmd[2] = C_DESC; 325 hpibsend(ctlr, slave, C_CMD, cmd, sizeof(cmd)); 326 hpibrecv(ctlr, slave, C_EXEC, desc, 37); 327 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 328 bzero(name, sizeof(name)); 329 if (!stat) { 330 register int n = desc->d_name; 331 for (i = 5; i >= 0; i--) { 332 name[i] = (n & 0xf) + '0'; 333 n >>= 4; 334 } 335 } 336 #ifdef DEBUG 337 if (rddebug & RDB_IDENT) { 338 printf("rd%d: name: %x ('%s')\n", 339 lunit, desc->d_name, name); 340 printf(" iuw %x, maxxfr %d, ctype %d\n", 341 desc->d_iuw, desc->d_cmaxxfr, desc->d_ctype); 342 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 343 desc->d_utype, desc->d_sectsize, 344 desc->d_blkbuf, desc->d_burstsize, desc->d_blocktime); 345 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 346 desc->d_uavexfr, desc->d_retry, desc->d_access, 347 desc->d_maxint, desc->d_fvbyte, desc->d_rvbyte); 348 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 349 desc->d_maxcyl, desc->d_maxhead, desc->d_maxsect, 350 desc->d_maxvsectl, desc->d_interleave); 351 } 352 #endif 353 /* 354 * Take care of a couple of anomolies: 355 * 1. 7945A and 7946A both return same HW id 356 * 2. 9122S and 9134D both return same HW id 357 * 3. 9122D and 9134L both return same HW id 358 */ 359 switch (rdidentinfo[id].ri_hwid) { 360 case RD7946AID: 361 if (bcmp(name, "079450", 6) == 0) 362 id = RD7945A; 363 else 364 id = RD7946A; 365 break; 366 367 case RD9134LID: 368 if (bcmp(name, "091340", 6) == 0) 369 id = RD9134L; 370 else 371 id = RD9122D; 372 break; 373 374 case RD9134DID: 375 if (bcmp(name, "091220", 6) == 0) 376 id = RD9122S; 377 else 378 id = RD9134D; 379 break; 380 } 381 /* 382 * XXX We use DEV_BSIZE instead of the sector size value pulled 383 * off the driver because all of this code assumes 512 byte 384 * blocks. ICK! 385 */ 386 if (verbose) { 387 printf(": %s\n", rdidentinfo[id].ri_desc); 388 printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", 389 rs->sc_hd->hp_xname, rdidentinfo[id].ri_ncyl, 390 rdidentinfo[id].ri_ntpc, rdidentinfo[id].ri_nblocks, 391 DEV_BSIZE); 392 } 393 return(id); 394 } 395 396 rdreset(rs, hd) 397 register struct rd_softc *rs; 398 register struct hp_device *hd; 399 { 400 u_char stat; 401 402 rs->sc_clear.c_unit = C_SUNIT(rs->sc_punit); 403 rs->sc_clear.c_cmd = C_CLEAR; 404 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &rs->sc_clear, 405 sizeof(rs->sc_clear)); 406 hpibswait(hd->hp_ctlr, hd->hp_slave); 407 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 408 rs->sc_src.c_unit = C_SUNIT(RDCTLR); 409 rs->sc_src.c_nop = C_NOP; 410 rs->sc_src.c_cmd = C_SREL; 411 rs->sc_src.c_param = C_REL; 412 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_src, 413 sizeof(rs->sc_src)); 414 hpibswait(hd->hp_ctlr, hd->hp_slave); 415 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 416 rs->sc_ssmc.c_unit = C_SUNIT(rs->sc_punit); 417 rs->sc_ssmc.c_cmd = C_SSM; 418 rs->sc_ssmc.c_refm = REF_MASK; 419 rs->sc_ssmc.c_fefm = FEF_MASK; 420 rs->sc_ssmc.c_aefm = AEF_MASK; 421 rs->sc_ssmc.c_iefm = IEF_MASK; 422 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &rs->sc_ssmc, 423 sizeof(rs->sc_ssmc)); 424 hpibswait(hd->hp_ctlr, hd->hp_slave); 425 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 426 #ifdef DEBUG 427 rdstats[hd->hp_unit].rdresets++; 428 #endif 429 } 430 431 /* 432 * Read or constuct a disklabel 433 */ 434 int 435 rdgetinfo(dev) 436 dev_t dev; 437 { 438 int unit = rdunit(dev); 439 register struct rd_softc *rs = &rd_softc[unit]; 440 register struct disklabel *lp = rs->sc_dkdev.dk_label; 441 register struct partition *pi; 442 char *msg, *readdisklabel(); 443 444 /* 445 * Set some default values to use while reading the label 446 * or to use if there isn't a label. 447 */ 448 bzero((caddr_t)lp, sizeof *lp); 449 lp->d_type = DTYPE_HPIB; 450 lp->d_secsize = DEV_BSIZE; 451 lp->d_nsectors = 32; 452 lp->d_ntracks = 20; 453 lp->d_ncylinders = 1; 454 lp->d_secpercyl = 32*20; 455 lp->d_npartitions = 3; 456 lp->d_partitions[2].p_offset = 0; 457 lp->d_partitions[2].p_size = LABELSECTOR+1; 458 459 /* 460 * Now try to read the disklabel 461 */ 462 msg = readdisklabel(rdlabdev(dev), rdstrategy, lp, NULL); 463 if (msg == NULL) 464 return(0); 465 466 pi = lp->d_partitions; 467 printf("%s: WARNING: %s, ", rs->sc_hd->hp_xname, msg); 468 #ifdef COMPAT_NOLABEL 469 printf("using old default partitioning\n"); 470 rdmakedisklabel(unit, lp); 471 #else 472 printf("defining `c' partition as entire disk\n"); 473 pi[2].p_size = rdidentinfo[rs->sc_type].ri_nblocks; 474 /* XXX reset other info since readdisklabel screws with it */ 475 lp->d_npartitions = 3; 476 pi[0].p_size = 0; 477 #endif 478 return(0); 479 } 480 481 int 482 rdopen(dev, flags, mode, p) 483 dev_t dev; 484 int flags, mode; 485 struct proc *p; 486 { 487 register int unit = rdunit(dev); 488 register struct rd_softc *rs = &rd_softc[unit]; 489 int error, mask; 490 491 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 492 return(ENXIO); 493 494 /* 495 * Wait for any pending opens/closes to complete 496 */ 497 while (rs->sc_flags & (RDF_OPENING|RDF_CLOSING)) 498 sleep((caddr_t)rs, PRIBIO); 499 500 /* 501 * On first open, get label and partition info. 502 * We may block reading the label, so be careful 503 * to stop any other opens. 504 */ 505 if (rs->sc_dkdev.dk_openmask == 0) { 506 rs->sc_flags |= RDF_OPENING; 507 error = rdgetinfo(dev); 508 rs->sc_flags &= ~RDF_OPENING; 509 wakeup((caddr_t)rs); 510 if (error) 511 return(error); 512 } 513 514 mask = 1 << rdpart(dev); 515 if (mode == S_IFCHR) 516 rs->sc_dkdev.dk_copenmask |= mask; 517 else 518 rs->sc_dkdev.dk_bopenmask |= mask; 519 rs->sc_dkdev.dk_openmask |= mask; 520 return(0); 521 } 522 523 int 524 rdclose(dev, flag, mode, p) 525 dev_t dev; 526 int flag, mode; 527 struct proc *p; 528 { 529 int unit = rdunit(dev); 530 register struct rd_softc *rs = &rd_softc[unit]; 531 register struct disk *dk = &rs->sc_dkdev; 532 int mask, s; 533 534 mask = 1 << rdpart(dev); 535 if (mode == S_IFCHR) 536 dk->dk_copenmask &= ~mask; 537 else 538 dk->dk_bopenmask &= ~mask; 539 dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; 540 /* 541 * On last close, we wait for all activity to cease since 542 * the label/parition info will become invalid. Since we 543 * might sleep, we must block any opens while we are here. 544 * Note we don't have to about other closes since we know 545 * we are the last one. 546 */ 547 if (dk->dk_openmask == 0) { 548 rs->sc_flags |= RDF_CLOSING; 549 s = splbio(); 550 while (rdtab[unit].b_active) { 551 rs->sc_flags |= RDF_WANTED; 552 sleep((caddr_t)&rdtab[unit], PRIBIO); 553 } 554 splx(s); 555 rs->sc_flags &= ~(RDF_CLOSING|RDF_WLABEL); 556 wakeup((caddr_t)rs); 557 } 558 return(0); 559 } 560 561 void 562 rdstrategy(bp) 563 register struct buf *bp; 564 { 565 int unit = rdunit(bp->b_dev); 566 register struct rd_softc *rs = &rd_softc[unit]; 567 register struct buf *dp = &rdtab[unit]; 568 register struct partition *pinfo; 569 register daddr_t bn; 570 register int sz, s; 571 572 #ifdef DEBUG 573 if (rddebug & RDB_FOLLOW) 574 printf("rdstrategy(%x): dev %x, bn %x, bcount %x, %c\n", 575 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 576 (bp->b_flags & B_READ) ? 'R' : 'W'); 577 #endif 578 bn = bp->b_blkno; 579 sz = howmany(bp->b_bcount, DEV_BSIZE); 580 pinfo = &rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)]; 581 if (bn < 0 || bn + sz > pinfo->p_size) { 582 sz = pinfo->p_size - bn; 583 if (sz == 0) { 584 bp->b_resid = bp->b_bcount; 585 goto done; 586 } 587 if (sz < 0) { 588 bp->b_error = EINVAL; 589 goto bad; 590 } 591 bp->b_bcount = dbtob(sz); 592 } 593 /* 594 * Check for write to write protected label 595 */ 596 if (bn + pinfo->p_offset <= LABELSECTOR && 597 #if LABELSECTOR != 0 598 bn + pinfo->p_offset + sz > LABELSECTOR && 599 #endif 600 !(bp->b_flags & B_READ) && !(rs->sc_flags & RDF_WLABEL)) { 601 bp->b_error = EROFS; 602 goto bad; 603 } 604 bp->b_cylin = bn + pinfo->p_offset; 605 s = splbio(); 606 disksort(dp, bp); 607 if (dp->b_active == 0) { 608 dp->b_active = 1; 609 rdustart(unit); 610 } 611 splx(s); 612 return; 613 bad: 614 bp->b_flags |= B_ERROR; 615 done: 616 biodone(bp); 617 } 618 619 /* 620 * Called from timeout() when handling maintenance releases 621 */ 622 void 623 rdrestart(arg) 624 void *arg; 625 { 626 int s = splbio(); 627 rdustart((int)arg); 628 splx(s); 629 } 630 631 rdustart(unit) 632 register int unit; 633 { 634 register struct buf *bp; 635 register struct rd_softc *rs = &rd_softc[unit]; 636 637 bp = rdtab[unit].b_actf; 638 rs->sc_addr = bp->b_un.b_addr; 639 rs->sc_resid = bp->b_bcount; 640 if (hpibreq(&rs->sc_dq)) 641 rdstart(unit); 642 } 643 644 struct buf * 645 rdfinish(unit, rs, bp) 646 int unit; 647 register struct rd_softc *rs; 648 register struct buf *bp; 649 { 650 register struct buf *dp = &rdtab[unit]; 651 652 dp->b_errcnt = 0; 653 dp->b_actf = bp->b_actf; 654 bp->b_resid = 0; 655 biodone(bp); 656 hpibfree(&rs->sc_dq); 657 if (dp->b_actf) 658 return(dp->b_actf); 659 dp->b_active = 0; 660 if (rs->sc_flags & RDF_WANTED) { 661 rs->sc_flags &= ~RDF_WANTED; 662 wakeup((caddr_t)dp); 663 } 664 return(NULL); 665 } 666 667 rdstart(unit) 668 register int unit; 669 { 670 register struct rd_softc *rs = &rd_softc[unit]; 671 register struct buf *bp = rdtab[unit].b_actf; 672 register struct hp_device *hp = rs->sc_hd; 673 register int part; 674 675 again: 676 #ifdef DEBUG 677 if (rddebug & RDB_FOLLOW) 678 printf("rdstart(%d): bp %x, %c\n", unit, bp, 679 (bp->b_flags & B_READ) ? 'R' : 'W'); 680 #endif 681 part = rdpart(bp->b_dev); 682 rs->sc_flags |= RDF_SEEK; 683 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 684 rs->sc_ioc.c_volume = C_SVOL(0); 685 rs->sc_ioc.c_saddr = C_SADDR; 686 rs->sc_ioc.c_hiaddr = 0; 687 rs->sc_ioc.c_addr = RDBTOS(bp->b_cylin); 688 rs->sc_ioc.c_nop2 = C_NOP; 689 rs->sc_ioc.c_slen = C_SLEN; 690 rs->sc_ioc.c_len = rs->sc_resid; 691 rs->sc_ioc.c_cmd = bp->b_flags & B_READ ? C_READ : C_WRITE; 692 #ifdef DEBUG 693 if (rddebug & RDB_IO) 694 printf("rdstart: hpibsend(%x, %x, %x, %x, %x)\n", 695 hp->hp_ctlr, hp->hp_slave, C_CMD, 696 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 697 #endif 698 if (hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, &rs->sc_ioc.c_unit, 699 sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) { 700 701 /* Instrumentation. */ 702 disk_busy(&rs->sc_dkdev); 703 rs->sc_dkdev.dk_seek++; 704 705 #ifdef DEBUG 706 if (rddebug & RDB_IO) 707 printf("rdstart: hpibawait(%x)\n", hp->hp_ctlr); 708 #endif 709 hpibawait(hp->hp_ctlr); 710 return; 711 } 712 /* 713 * Experience has shown that the hpibwait in this hpibsend will 714 * occasionally timeout. It appears to occur mostly on old 7914 715 * drives with full maintenance tracks. We should probably 716 * integrate this with the backoff code in rderror. 717 */ 718 #ifdef DEBUG 719 if (rddebug & RDB_ERROR) 720 printf("%s: rdstart: cmd %x adr %d blk %d len %d ecnt %d\n", 721 rs->sc_hd->hp_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 722 bp->b_blkno, rs->sc_resid, rdtab[unit].b_errcnt); 723 rdstats[unit].rdretries++; 724 #endif 725 rs->sc_flags &= ~RDF_SEEK; 726 rdreset(rs, hp); 727 if (rdtab[unit].b_errcnt++ < RDRETRY) 728 goto again; 729 printf("%s: rdstart err: cmd 0x%x sect %d blk %d len %d\n", 730 rs->sc_hd->hp_xname, rs->sc_ioc.c_cmd, rs->sc_ioc.c_addr, 731 bp->b_blkno, rs->sc_resid); 732 bp->b_flags |= B_ERROR; 733 bp->b_error = EIO; 734 bp = rdfinish(unit, rs, bp); 735 if (bp) { 736 rs->sc_addr = bp->b_un.b_addr; 737 rs->sc_resid = bp->b_bcount; 738 if (hpibreq(&rs->sc_dq)) 739 goto again; 740 } 741 } 742 743 rdgo(unit) 744 register int unit; 745 { 746 register struct rd_softc *rs = &rd_softc[unit]; 747 register struct hp_device *hp = rs->sc_hd; 748 struct buf *bp = rdtab[unit].b_actf; 749 int rw; 750 751 rw = bp->b_flags & B_READ; 752 753 /* Instrumentation. */ 754 disk_busy(&rs->sc_dkdev); 755 756 #ifdef USELEDS 757 if (inledcontrol == 0) 758 ledcontrol(0, 0, LED_DISK); 759 #endif 760 hpibgo(hp->hp_ctlr, hp->hp_slave, C_EXEC, 761 rs->sc_addr, rs->sc_resid, rw, rw != 0); 762 } 763 764 rdintr(arg) 765 void *arg; 766 { 767 register struct rd_softc *rs = arg; 768 int unit = rs->sc_hd->hp_unit; 769 register struct buf *bp = rdtab[unit].b_actf; 770 register struct hp_device *hp = rs->sc_hd; 771 u_char stat = 13; /* in case hpibrecv fails */ 772 int rv, restart; 773 774 #ifdef DEBUG 775 if (rddebug & RDB_FOLLOW) 776 printf("rdintr(%d): bp %x, %c, flags %x\n", unit, bp, 777 (bp->b_flags & B_READ) ? 'R' : 'W', rs->sc_flags); 778 if (bp == NULL) { 779 printf("%s: bp == NULL\n", rs->sc_hd->hp_xname); 780 return; 781 } 782 #endif 783 disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid)); 784 785 if (rs->sc_flags & RDF_SEEK) { 786 rs->sc_flags &= ~RDF_SEEK; 787 if (hpibustart(hp->hp_ctlr)) 788 rdgo(unit); 789 return; 790 } 791 if ((rs->sc_flags & RDF_SWAIT) == 0) { 792 #ifdef DEBUG 793 rdstats[unit].rdpolltries++; 794 #endif 795 if (hpibpptest(hp->hp_ctlr, hp->hp_slave) == 0) { 796 #ifdef DEBUG 797 rdstats[unit].rdpollwaits++; 798 #endif 799 800 /* Instrumentation. */ 801 disk_busy(&rs->sc_dkdev); 802 rs->sc_flags |= RDF_SWAIT; 803 hpibawait(hp->hp_ctlr); 804 return; 805 } 806 } else 807 rs->sc_flags &= ~RDF_SWAIT; 808 rv = hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 809 if (rv != 1 || stat) { 810 #ifdef DEBUG 811 if (rddebug & RDB_ERROR) 812 printf("rdintr: recv failed or bad stat %d\n", stat); 813 #endif 814 restart = rderror(unit); 815 #ifdef DEBUG 816 rdstats[unit].rdretries++; 817 #endif 818 if (rdtab[unit].b_errcnt++ < RDRETRY) { 819 if (restart) 820 rdstart(unit); 821 return; 822 } 823 bp->b_flags |= B_ERROR; 824 bp->b_error = EIO; 825 } 826 if (rdfinish(unit, rs, bp)) 827 rdustart(unit); 828 } 829 830 rdstatus(rs) 831 register struct rd_softc *rs; 832 { 833 register int c, s; 834 u_char stat; 835 int rv; 836 837 c = rs->sc_hd->hp_ctlr; 838 s = rs->sc_hd->hp_slave; 839 rs->sc_rsc.c_unit = C_SUNIT(rs->sc_punit); 840 rs->sc_rsc.c_sram = C_SRAM; 841 rs->sc_rsc.c_ram = C_RAM; 842 rs->sc_rsc.c_cmd = C_STATUS; 843 bzero((caddr_t)&rs->sc_stat, sizeof(rs->sc_stat)); 844 rv = hpibsend(c, s, C_CMD, &rs->sc_rsc, sizeof(rs->sc_rsc)); 845 if (rv != sizeof(rs->sc_rsc)) { 846 #ifdef DEBUG 847 if (rddebug & RDB_STATUS) 848 printf("rdstatus: send C_CMD failed %d != %d\n", 849 rv, sizeof(rs->sc_rsc)); 850 #endif 851 return(1); 852 } 853 rv = hpibrecv(c, s, C_EXEC, &rs->sc_stat, sizeof(rs->sc_stat)); 854 if (rv != sizeof(rs->sc_stat)) { 855 #ifdef DEBUG 856 if (rddebug & RDB_STATUS) 857 printf("rdstatus: send C_EXEC failed %d != %d\n", 858 rv, sizeof(rs->sc_stat)); 859 #endif 860 return(1); 861 } 862 rv = hpibrecv(c, s, C_QSTAT, &stat, 1); 863 if (rv != 1 || stat) { 864 #ifdef DEBUG 865 if (rddebug & RDB_STATUS) 866 printf("rdstatus: recv failed %d or bad stat %d\n", 867 rv, stat); 868 #endif 869 return(1); 870 } 871 return(0); 872 } 873 874 /* 875 * Deal with errors. 876 * Returns 1 if request should be restarted, 877 * 0 if we should just quietly give up. 878 */ 879 rderror(unit) 880 int unit; 881 { 882 struct rd_softc *rs = &rd_softc[unit]; 883 register struct rd_stat *sp; 884 struct buf *bp; 885 daddr_t hwbn, pbn; 886 887 if (rdstatus(rs)) { 888 #ifdef DEBUG 889 printf("%s: couldn't get status\n", rs->sc_hd->hp_xname); 890 #endif 891 rdreset(rs, rs->sc_hd); 892 return(1); 893 } 894 sp = &rs->sc_stat; 895 if (sp->c_fef & FEF_REXMT) 896 return(1); 897 if (sp->c_fef & FEF_PF) { 898 rdreset(rs, rs->sc_hd); 899 return(1); 900 } 901 /* 902 * Unit requests release for internal maintenance. 903 * We just delay awhile and try again later. Use expontially 904 * increasing backoff ala ethernet drivers since we don't really 905 * know how long the maintenance will take. With RDWAITC and 906 * RDRETRY as defined, the range is 1 to 32 seconds. 907 */ 908 if (sp->c_fef & FEF_IMR) { 909 extern int hz; 910 int rdtimo = RDWAITC << rdtab[unit].b_errcnt; 911 #ifdef DEBUG 912 printf("%s: internal maintenance, %d second timeout\n", 913 rs->sc_hd->hp_xname, rdtimo); 914 rdstats[unit].rdtimeouts++; 915 #endif 916 hpibfree(&rs->sc_dq); 917 timeout(rdrestart, (void *)unit, rdtimo * hz); 918 return(0); 919 } 920 /* 921 * Only report error if we have reached the error reporting 922 * threshhold. By default, this will only report after the 923 * retry limit has been exceeded. 924 */ 925 if (rdtab[unit].b_errcnt < rderrthresh) 926 return(1); 927 928 /* 929 * First conjure up the block number at which the error occured. 930 * Note that not all errors report a block number, in that case 931 * we just use b_blkno. 932 */ 933 bp = rdtab[unit].b_actf; 934 pbn = rs->sc_dkdev.dk_label->d_partitions[rdpart(bp->b_dev)].p_offset; 935 if ((sp->c_fef & FEF_CU) || (sp->c_fef & FEF_DR) || 936 (sp->c_ief & IEF_RRMASK)) { 937 hwbn = RDBTOS(pbn + bp->b_blkno); 938 pbn = bp->b_blkno; 939 } else { 940 hwbn = sp->c_blk; 941 pbn = RDSTOB(hwbn) - pbn; 942 } 943 /* 944 * Now output a generic message suitable for badsect. 945 * Note that we don't use harderr cuz it just prints 946 * out b_blkno which is just the beginning block number 947 * of the transfer, not necessary where the error occured. 948 */ 949 printf("rd%d%c: hard error sn%d\n", 950 rdunit(bp->b_dev), 'a'+rdpart(bp->b_dev), pbn); 951 /* 952 * Now report the status as returned by the hardware with 953 * attempt at interpretation (unless debugging). 954 */ 955 printf("rd%d %s error:", 956 unit, (bp->b_flags & B_READ) ? "read" : "write"); 957 #ifdef DEBUG 958 if (rddebug & RDB_ERROR) { 959 /* status info */ 960 printf("\n volume: %d, unit: %d\n", 961 (sp->c_vu>>4)&0xF, sp->c_vu&0xF); 962 rdprinterr("reject", sp->c_ref, err_reject); 963 rdprinterr("fault", sp->c_fef, err_fault); 964 rdprinterr("access", sp->c_aef, err_access); 965 rdprinterr("info", sp->c_ief, err_info); 966 printf(" block: %d, P1-P10: ", hwbn); 967 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 968 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 969 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 970 /* command */ 971 printf(" ioc: "); 972 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_pad, 8)); 973 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_hiaddr, 4)); 974 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_addr, 8)); 975 printf("%s", hexstr(*(u_short *)&rs->sc_ioc.c_nop2, 4)); 976 printf("%s", hexstr(*(u_int *)&rs->sc_ioc.c_len, 8)); 977 printf("%s\n", hexstr(*(u_short *)&rs->sc_ioc.c_cmd, 4)); 978 return(1); 979 } 980 #endif 981 printf(" v%d u%d, R0x%x F0x%x A0x%x I0x%x\n", 982 (sp->c_vu>>4)&0xF, sp->c_vu&0xF, 983 sp->c_ref, sp->c_fef, sp->c_aef, sp->c_ief); 984 printf("P1-P10: "); 985 printf("%s", hexstr(*(u_int *)&sp->c_raw[0], 8)); 986 printf("%s", hexstr(*(u_int *)&sp->c_raw[4], 8)); 987 printf("%s\n", hexstr(*(u_short *)&sp->c_raw[8], 4)); 988 return(1); 989 } 990 991 int 992 rdread(dev, uio, flags) 993 dev_t dev; 994 struct uio *uio; 995 int flags; 996 { 997 998 return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); 999 } 1000 1001 int 1002 rdwrite(dev, uio, flags) 1003 dev_t dev; 1004 struct uio *uio; 1005 int flags; 1006 { 1007 1008 return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1009 } 1010 1011 int 1012 rdioctl(dev, cmd, data, flag, p) 1013 dev_t dev; 1014 int cmd; 1015 caddr_t data; 1016 int flag; 1017 struct proc *p; 1018 { 1019 int unit = rdunit(dev); 1020 register struct rd_softc *sc = &rd_softc[unit]; 1021 register struct disklabel *lp = sc->sc_dkdev.dk_label; 1022 int error, flags; 1023 1024 switch (cmd) { 1025 case DIOCGDINFO: 1026 *(struct disklabel *)data = *lp; 1027 return (0); 1028 1029 case DIOCGPART: 1030 ((struct partinfo *)data)->disklab = lp; 1031 ((struct partinfo *)data)->part = 1032 &lp->d_partitions[rdpart(dev)]; 1033 return (0); 1034 1035 case DIOCWLABEL: 1036 if ((flag & FWRITE) == 0) 1037 return (EBADF); 1038 if (*(int *)data) 1039 sc->sc_flags |= RDF_WLABEL; 1040 else 1041 sc->sc_flags &= ~RDF_WLABEL; 1042 return (0); 1043 1044 case DIOCSDINFO: 1045 if ((flag & FWRITE) == 0) 1046 return (EBADF); 1047 return (setdisklabel(lp, (struct disklabel *)data, 1048 (sc->sc_flags & RDF_WLABEL) ? 0 1049 : sc->sc_dkdev.dk_openmask, 1050 (struct cpu_disklabel *)0)); 1051 1052 case DIOCWDINFO: 1053 if ((flag & FWRITE) == 0) 1054 return (EBADF); 1055 error = setdisklabel(lp, (struct disklabel *)data, 1056 (sc->sc_flags & RDF_WLABEL) ? 0 1057 : sc->sc_dkdev.dk_openmask, 1058 (struct cpu_disklabel *)0); 1059 if (error) 1060 return (error); 1061 flags = sc->sc_flags; 1062 sc->sc_flags = RDF_ALIVE | RDF_WLABEL; 1063 error = writedisklabel(rdlabdev(dev), rdstrategy, lp, 1064 (struct cpu_disklabel *)0); 1065 sc->sc_flags = flags; 1066 return (error); 1067 } 1068 return(EINVAL); 1069 } 1070 1071 int 1072 rdsize(dev) 1073 dev_t dev; 1074 { 1075 register int unit = rdunit(dev); 1076 register struct rd_softc *rs = &rd_softc[unit]; 1077 int psize, didopen = 0; 1078 1079 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 1080 return(-1); 1081 1082 /* 1083 * We get called very early on (via swapconf) 1084 * without the device being open so we may need 1085 * to handle it here. 1086 */ 1087 if (rs->sc_dkdev.dk_openmask == 0) { 1088 if (rdopen(dev, FREAD|FWRITE, S_IFBLK, NULL)) 1089 return(-1); 1090 didopen = 1; 1091 } 1092 psize = rs->sc_dkdev.dk_label->d_partitions[rdpart(dev)].p_size; 1093 if (didopen) 1094 (void) rdclose(dev, FREAD|FWRITE, S_IFBLK, NULL); 1095 return (psize); 1096 } 1097 1098 #ifdef DEBUG 1099 rdprinterr(str, err, tab) 1100 char *str; 1101 short err; 1102 char *tab[]; 1103 { 1104 register int i; 1105 int printed; 1106 1107 if (err == 0) 1108 return; 1109 printf(" %s error field:", str, err); 1110 printed = 0; 1111 for (i = 0; i < 16; i++) 1112 if (err & (0x8000 >> i)) 1113 printf("%s%s", printed++ ? " + " : " ", tab[i]); 1114 printf("\n"); 1115 } 1116 #endif 1117 1118 /* 1119 * Non-interrupt driven, non-dma dump routine. 1120 */ 1121 int 1122 rddump(dev) 1123 dev_t dev; 1124 { 1125 int part = rdpart(dev); 1126 int unit = rdunit(dev); 1127 register struct rd_softc *rs = &rd_softc[unit]; 1128 register struct hp_device *hp = rs->sc_hd; 1129 register struct partition *pinfo; 1130 register daddr_t baddr; 1131 register int maddr, pages, i; 1132 char stat; 1133 extern int lowram, dumpsize; 1134 #ifdef DEBUG 1135 extern int pmapdebug; 1136 pmapdebug = 0; 1137 #endif 1138 1139 /* is drive ok? */ 1140 if (unit >= NRD || (rs->sc_flags & RDF_ALIVE) == 0) 1141 return (ENXIO); 1142 pinfo = &rs->sc_dkdev.dk_label->d_partitions[part]; 1143 /* dump parameters in range? */ 1144 if (dumplo < 0 || dumplo >= pinfo->p_size || 1145 pinfo->p_fstype != FS_SWAP) 1146 return (EINVAL); 1147 pages = dumpsize; 1148 if (dumplo + ctod(pages) > pinfo->p_size) 1149 pages = dtoc(pinfo->p_size - dumplo); 1150 maddr = lowram; 1151 baddr = dumplo + pinfo->p_offset; 1152 /* HPIB idle? */ 1153 if (!hpibreq(&rs->sc_dq)) { 1154 hpibreset(hp->hp_ctlr); 1155 rdreset(rs, rs->sc_hd); 1156 printf("[ drive %d reset ] ", unit); 1157 } 1158 for (i = 0; i < pages; i++) { 1159 #define NPGMB (1024*1024/NBPG) 1160 /* print out how many Mbs we have dumped */ 1161 if (i && (i % NPGMB) == 0) 1162 printf("%d ", i / NPGMB); 1163 #undef NPBMG 1164 rs->sc_ioc.c_unit = C_SUNIT(rs->sc_punit); 1165 rs->sc_ioc.c_volume = C_SVOL(0); 1166 rs->sc_ioc.c_saddr = C_SADDR; 1167 rs->sc_ioc.c_hiaddr = 0; 1168 rs->sc_ioc.c_addr = RDBTOS(baddr); 1169 rs->sc_ioc.c_nop2 = C_NOP; 1170 rs->sc_ioc.c_slen = C_SLEN; 1171 rs->sc_ioc.c_len = NBPG; 1172 rs->sc_ioc.c_cmd = C_WRITE; 1173 hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, 1174 &rs->sc_ioc.c_unit, sizeof(rs->sc_ioc)-2); 1175 if (hpibswait(hp->hp_ctlr, hp->hp_slave)) 1176 return (EIO); 1177 pmap_enter(pmap_kernel(), (vm_offset_t)vmmap, maddr, 1178 VM_PROT_READ, TRUE); 1179 hpibsend(hp->hp_ctlr, hp->hp_slave, C_EXEC, vmmap, NBPG); 1180 (void) hpibswait(hp->hp_ctlr, hp->hp_slave); 1181 hpibrecv(hp->hp_ctlr, hp->hp_slave, C_QSTAT, &stat, 1); 1182 if (stat) 1183 return (EIO); 1184 maddr += NBPG; 1185 baddr += ctod(1); 1186 } 1187 return (0); 1188 } 1189 #endif 1190