1 /* 2 * Copyright (c) 1982, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)ct.c 8.2 (Berkeley) 01/12/94 8 */ 9 10 #include "ct.h" 11 #if NCT > 0 12 /* 13 * CS80 cartridge tape driver (9144, 88140, 9145) 14 * 15 * Reminder: 16 * C_CC bit (character count option) when used in the CS/80 command 17 * 'set options' will cause the tape not to stream. 18 * 19 * TODO: 20 * make filesystem compatible 21 * make block mode work according to mtio(4) spec. (if possible) 22 * merge with cs80 disk driver 23 * finish support of 9145 24 */ 25 26 #include <sys/param.h> 27 #include <sys/buf.h> 28 #include <sys/ioctl.h> 29 #include <sys/mtio.h> 30 #include <sys/tprintf.h> 31 #include <sys/proc.h> 32 33 #include <hp/dev/device.h> 34 35 #include <hp300/dev/ctreg.h> 36 37 /* number of eof marks to remember */ 38 #define EOFS 128 39 40 int ctinit(), ctstart(), ctgo(), ctintr(); 41 struct driver ctdriver = { 42 ctinit, "ct", ctstart, ctgo, ctintr, 43 }; 44 45 struct ct_softc { 46 struct hp_device *sc_hd; 47 struct ct_iocmd sc_ioc; 48 struct ct_rscmd sc_rsc; 49 struct ct_stat sc_stat; 50 struct ct_ssmcmd sc_ssmc; 51 struct ct_srcmd sc_src; 52 struct ct_soptcmd sc_soptc; 53 struct ct_ulcmd sc_ul; 54 struct ct_wfmcmd sc_wfm; 55 struct ct_clearcmd sc_clear; 56 struct buf *sc_bp; 57 int sc_blkno; 58 int sc_cmd; 59 int sc_resid; 60 char *sc_addr; 61 int sc_flags; 62 short sc_type; 63 short sc_punit; 64 tpr_t sc_tpr; 65 struct devqueue sc_dq; 66 int sc_eofp; 67 int sc_eofs[EOFS]; 68 } ct_softc[NCT]; 69 70 /* flags */ 71 #define CTF_OPEN 0x01 72 #define CTF_ALIVE 0x02 73 #define CTF_WRT 0x04 74 #define CTF_CMD 0x08 75 #define CTF_IO 0x10 76 #define CTF_BEOF 0x20 77 #define CTF_AEOF 0x40 78 #define CTF_EOT 0x80 79 #define CTF_STATWAIT 0x100 80 #define CTF_CANSTREAM 0x200 81 #define CTF_WRTTN 0x400 82 83 struct ctinfo { 84 short hwid; 85 short punit; 86 char *desc; 87 } ctinfo[] = { 88 CT7946ID, 1, "7946A", 89 CT7912PID, 1, "7912P", 90 CT7914PID, 1, "7914P", 91 CT9144ID, 0, "9144", 92 CT9145ID, 0, "9145", 93 }; 94 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 95 96 struct buf cttab[NCT]; 97 struct buf ctbuf[NCT]; 98 99 #define CT_NOREW 4 100 #define CT_STREAM 8 101 #define UNIT(x) (minor(x) & 3) 102 #define ctpunit(x) ((x) & 7) 103 104 #ifdef DEBUG 105 int ctdebug = 0; 106 #define CDB_FILES 0x01 107 #define CT_BSF 0x02 108 #endif 109 110 ctinit(hd) 111 register struct hp_device *hd; 112 { 113 register struct ct_softc *sc = &ct_softc[hd->hp_unit]; 114 register struct buf *bp; 115 116 for (bp = cttab; bp < &cttab[NCT]; bp++) 117 bp->b_actb = &bp->b_actf; 118 sc->sc_hd = hd; 119 sc->sc_punit = ctpunit(hd->hp_flags); 120 if (ctident(sc, hd) < 0) 121 return(0); 122 ctreset(sc, hd); 123 sc->sc_dq.dq_ctlr = hd->hp_ctlr; 124 sc->sc_dq.dq_unit = hd->hp_unit; 125 sc->sc_dq.dq_slave = hd->hp_slave; 126 sc->sc_dq.dq_driver = &ctdriver; 127 sc->sc_flags |= CTF_ALIVE; 128 return(1); 129 } 130 131 ctident(sc, hd) 132 register struct ct_softc *sc; 133 register struct hp_device *hd; 134 { 135 struct ct_describe desc; 136 u_char stat, cmd[3]; 137 char name[7]; 138 int id, i; 139 140 /* 141 * Read device id and verify that: 142 * 1. It is a CS80 device 143 * 2. It is one of our recognized tape devices 144 * 3. It has the proper physical unit number 145 */ 146 id = hpibid(hd->hp_ctlr, hd->hp_slave); 147 if ((id & 0x200) == 0) 148 return(-1); 149 for (i = 0; i < nctinfo; i++) 150 if (id == ctinfo[i].hwid) 151 break; 152 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 153 return(-1); 154 id = i; 155 156 /* 157 * Collect device description. 158 * Right now we only need this to differentiate 7945 from 7946. 159 * Note that we always issue the describe command to unit 0. 160 */ 161 cmd[0] = C_SUNIT(0); 162 cmd[1] = C_SVOL(0); 163 cmd[2] = C_DESC; 164 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 165 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 166 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 167 bzero(name, sizeof(name)); 168 if (!stat) { 169 register int n = desc.d_name; 170 for (i = 5; i >= 0; i--) { 171 name[i] = (n & 0xf) + '0'; 172 n >>= 4; 173 } 174 } 175 switch (ctinfo[id].hwid) { 176 case CT7946ID: 177 if (bcmp(name, "079450", 6) == 0) 178 return(-1); /* not really a 7946 */ 179 /* fall into... */ 180 case CT9144ID: 181 case CT9145ID: 182 sc->sc_type = CT9144; 183 sc->sc_flags |= CTF_CANSTREAM; 184 break; 185 186 case CT7912PID: 187 case CT7914PID: 188 sc->sc_type = CT88140; 189 break; 190 } 191 printf("ct%d: %s %stape\n", hd->hp_unit, ctinfo[id].desc, 192 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 193 return(id); 194 } 195 196 ctreset(sc, hd) 197 register struct ct_softc *sc; 198 register struct hp_device *hd; 199 { 200 u_char stat; 201 202 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 203 sc->sc_clear.cmd = C_CLEAR; 204 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 205 sizeof(sc->sc_clear)); 206 hpibswait(hd->hp_ctlr, hd->hp_slave); 207 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 208 sc->sc_src.unit = C_SUNIT(CTCTLR); 209 sc->sc_src.nop = C_NOP; 210 sc->sc_src.cmd = C_SREL; 211 sc->sc_src.param = C_REL; 212 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 213 sizeof(sc->sc_src)); 214 hpibswait(hd->hp_ctlr, hd->hp_slave); 215 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 216 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 217 sc->sc_ssmc.cmd = C_SSM; 218 sc->sc_ssmc.refm = REF_MASK; 219 sc->sc_ssmc.fefm = FEF_MASK; 220 sc->sc_ssmc.aefm = AEF_MASK; 221 sc->sc_ssmc.iefm = IEF_MASK; 222 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 223 sizeof(sc->sc_ssmc)); 224 hpibswait(hd->hp_ctlr, hd->hp_slave); 225 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 226 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 227 sc->sc_soptc.nop = C_NOP; 228 sc->sc_soptc.cmd = C_SOPT; 229 sc->sc_soptc.opt = C_SPAR; 230 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 231 sizeof(sc->sc_soptc)); 232 hpibswait(hd->hp_ctlr, hd->hp_slave); 233 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 234 } 235 236 /*ARGSUSED*/ 237 ctopen(dev, flag, type, p) 238 dev_t dev; 239 int flag, type; 240 struct proc *p; 241 { 242 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 243 u_char stat; 244 int cc; 245 246 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 247 return(ENXIO); 248 if (sc->sc_flags & CTF_OPEN) 249 return(EBUSY); 250 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 251 sc->sc_soptc.nop = C_NOP; 252 sc->sc_soptc.cmd = C_SOPT; 253 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 254 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 255 else 256 sc->sc_soptc.opt = C_SPAR; 257 /* 258 * Check the return of hpibsend() and hpibswait(). 259 * Drive could be loading/unloading a tape. If not checked, 260 * driver hangs. 261 */ 262 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 263 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 264 if (cc != sizeof(sc->sc_soptc)) 265 return(EBUSY); 266 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 267 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 268 &stat, sizeof(stat)); 269 if (cc != sizeof(stat)) 270 return(EBUSY); 271 sc->sc_tpr = tprintf_open(p); 272 sc->sc_flags |= CTF_OPEN; 273 return(0); 274 } 275 276 /*ARGSUSED*/ 277 ctclose(dev, flag) 278 dev_t dev; 279 int flag; 280 { 281 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 282 283 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 284 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 285 ctcommand(dev, MTWEOF, 2); 286 ctcommand(dev, MTBSR, 1); 287 if (sc->sc_eofp == EOFS - 1) 288 sc->sc_eofs[EOFS - 1]--; 289 else 290 sc->sc_eofp--; 291 #ifdef DEBUG 292 if(ctdebug & CT_BSF) 293 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 294 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 295 #endif 296 } 297 if ((minor(dev) & CT_NOREW) == 0) 298 ctcommand(dev, MTREW, 1); 299 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 300 tprintf_close(sc->sc_tpr); 301 #ifdef DEBUG 302 if (ctdebug & CDB_FILES) 303 printf("ctclose: flags %x\n", sc->sc_flags); 304 #endif 305 return(0); /* XXX */ 306 } 307 308 ctcommand(dev, cmd, cnt) 309 dev_t dev; 310 int cmd; 311 register int cnt; 312 { 313 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 314 register struct buf *bp = &ctbuf[UNIT(dev)]; 315 register struct buf *nbp = 0; 316 317 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 318 cnt = sc->sc_eofs[EOFS - 1] - cnt; 319 ctcommand(dev, MTREW, 1); 320 ctcommand(dev, MTFSF, cnt); 321 cnt = 2; 322 cmd = MTBSR; 323 } 324 325 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 326 cnt = 1; 327 cmd = MTREW; 328 } 329 330 sc->sc_flags |= CTF_CMD; 331 sc->sc_bp = bp; 332 sc->sc_cmd = cmd; 333 bp->b_dev = dev; 334 if (cmd == MTFSF) { 335 nbp = (struct buf *)geteblk(MAXBSIZE); 336 bp->b_un.b_addr = nbp->b_un.b_addr; 337 bp->b_bcount = MAXBSIZE; 338 } 339 again: 340 bp->b_flags = B_BUSY; 341 if (cmd == MTBSF) { 342 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 343 sc->sc_eofp--; 344 #ifdef DEBUG 345 if (ctdebug & CT_BSF) 346 printf("ct%d: backup eof pos %d blk %d\n", 347 UNIT(dev), sc->sc_eofp, 348 sc->sc_eofs[sc->sc_eofp]); 349 #endif 350 } 351 ctstrategy(bp); 352 iowait(bp); 353 if (--cnt > 0) 354 goto again; 355 bp->b_flags = 0; 356 sc->sc_flags &= ~CTF_CMD; 357 if (nbp) 358 brelse(nbp); 359 } 360 361 ctstrategy(bp) 362 register struct buf *bp; 363 { 364 register struct buf *dp; 365 register int s, unit; 366 367 unit = UNIT(bp->b_dev); 368 dp = &cttab[unit]; 369 bp->b_actf = NULL; 370 s = splbio(); 371 bp->b_actb = dp->b_actb; 372 *dp->b_actb = bp; 373 dp->b_actb = &bp->b_actf; 374 if (dp->b_active == 0) { 375 dp->b_active = 1; 376 ctustart(unit); 377 } 378 splx(s); 379 } 380 381 ctustart(unit) 382 register int unit; 383 { 384 register struct ct_softc *sc = &ct_softc[unit]; 385 register struct buf *bp; 386 387 bp = cttab[unit].b_actf; 388 sc->sc_addr = bp->b_un.b_addr; 389 sc->sc_resid = bp->b_bcount; 390 if (hpibreq(&sc->sc_dq)) 391 ctstart(unit); 392 } 393 394 ctstart(unit) 395 register int unit; 396 { 397 register struct ct_softc *sc = &ct_softc[unit]; 398 register struct buf *bp, *dp; 399 register int i; 400 401 bp = cttab[unit].b_actf; 402 again: 403 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 404 switch(sc->sc_cmd) { 405 406 case MTFSF: 407 bp->b_flags |= B_READ; 408 goto mustio; 409 410 case MTBSF: 411 goto gotaddr; 412 413 case MTOFFL: 414 sc->sc_blkno = 0; 415 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 416 sc->sc_ul.cmd = C_UNLOAD; 417 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 418 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 419 break; 420 421 case MTWEOF: 422 sc->sc_blkno++; 423 sc->sc_flags |= CTF_WRT; 424 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 425 sc->sc_wfm.cmd = C_WFM; 426 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 427 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 428 ctaddeof(unit); 429 break; 430 431 case MTBSR: 432 sc->sc_blkno--; 433 goto gotaddr; 434 435 case MTFSR: 436 sc->sc_blkno++; 437 goto gotaddr; 438 439 case MTREW: 440 sc->sc_blkno = 0; 441 #ifdef DEBUG 442 if(ctdebug & CT_BSF) 443 printf("ct%d: clearing eofs\n", unit); 444 #endif 445 for (i=0; i<EOFS; i++) 446 sc->sc_eofs[i] = 0; 447 sc->sc_eofp = 0; 448 449 gotaddr: 450 sc->sc_ioc.saddr = C_SADDR; 451 sc->sc_ioc.addr0 = 0; 452 sc->sc_ioc.addr = sc->sc_blkno; 453 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 454 sc->sc_ioc.nop2 = C_NOP; 455 sc->sc_ioc.slen = C_SLEN; 456 sc->sc_ioc.len = 0; 457 sc->sc_ioc.nop3 = C_NOP; 458 sc->sc_ioc.cmd = C_READ; 459 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 460 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 461 break; 462 } 463 } 464 else { 465 mustio: 466 if ((bp->b_flags & B_READ) && 467 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 468 #ifdef DEBUG 469 if (ctdebug & CDB_FILES) 470 printf("ctstart: before flags %x\n", sc->sc_flags); 471 #endif 472 if (sc->sc_flags & CTF_BEOF) { 473 sc->sc_flags &= ~CTF_BEOF; 474 sc->sc_flags |= CTF_AEOF; 475 #ifdef DEBUG 476 if (ctdebug & CDB_FILES) 477 printf("ctstart: after flags %x\n", sc->sc_flags); 478 #endif 479 } 480 bp->b_resid = bp->b_bcount; 481 iodone(bp); 482 hpibfree(&sc->sc_dq); 483 if (dp = bp->b_actf) 484 dp->b_actb = bp->b_actb; 485 else 486 cttab[unit].b_actb = bp->b_actb; 487 *bp->b_actb = dp; 488 if ((bp = dp) == NULL) { 489 cttab[unit].b_active = 0; 490 return; 491 } 492 sc->sc_addr = bp->b_un.b_addr; 493 sc->sc_resid = bp->b_bcount; 494 if (hpibreq(&sc->sc_dq)) 495 goto again; 496 return; 497 } 498 sc->sc_flags |= CTF_IO; 499 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 500 sc->sc_ioc.saddr = C_SADDR; 501 sc->sc_ioc.addr0 = 0; 502 sc->sc_ioc.addr = sc->sc_blkno; 503 sc->sc_ioc.nop2 = C_NOP; 504 sc->sc_ioc.slen = C_SLEN; 505 sc->sc_ioc.len = sc->sc_resid; 506 sc->sc_ioc.nop3 = C_NOP; 507 if (bp->b_flags & B_READ) 508 sc->sc_ioc.cmd = C_READ; 509 else { 510 sc->sc_ioc.cmd = C_WRITE; 511 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 512 } 513 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 514 &sc->sc_ioc, sizeof(sc->sc_ioc)); 515 } 516 hpibawait(sc->sc_hd->hp_ctlr); 517 } 518 519 ctgo(unit) 520 register int unit; 521 { 522 register struct ct_softc *sc = &ct_softc[unit]; 523 register struct buf *bp; 524 525 bp = cttab[unit].b_actf; 526 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 527 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 528 } 529 530 /* 531 * Hideous grue to handle EOF/EOT (mostly for reads) 532 */ 533 cteof(sc, bp) 534 register struct ct_softc *sc; 535 register struct buf *bp; 536 { 537 long blks; 538 539 /* 540 * EOT on a write is an error. 541 */ 542 if ((bp->b_flags & B_READ) == 0) { 543 bp->b_resid = bp->b_bcount; 544 bp->b_flags |= B_ERROR; 545 bp->b_error = ENOSPC; 546 sc->sc_flags |= CTF_EOT; 547 return; 548 } 549 /* 550 * Use returned block position to determine how many blocks 551 * we really read and update b_resid. 552 */ 553 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 554 #ifdef DEBUG 555 if (ctdebug & CDB_FILES) 556 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 557 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 558 blks, bp->b_bcount - CTKTOB(blks)); 559 #endif 560 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 561 blks = 0; 562 sc->sc_blkno++; 563 } 564 else { 565 sc->sc_blkno = sc->sc_stat.c_blk; 566 } 567 bp->b_resid = bp->b_bcount - CTKTOB(blks); 568 /* 569 * If we are at physical EOV or were after an EOF, 570 * we are now at logical EOT. 571 */ 572 if ((sc->sc_stat.c_aef & AEF_EOV) || 573 (sc->sc_flags & CTF_AEOF)) { 574 sc->sc_flags |= CTF_EOT; 575 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 576 } 577 /* 578 * If we were before an EOF or we have just completed a FSF, 579 * we are now after EOF. 580 */ 581 else if ((sc->sc_flags & CTF_BEOF) || 582 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 583 sc->sc_flags |= CTF_AEOF; 584 sc->sc_flags &= ~CTF_BEOF; 585 } 586 /* 587 * Otherwise if we read something we are now before EOF 588 * (and no longer after EOF). 589 */ 590 else if (blks) { 591 sc->sc_flags |= CTF_BEOF; 592 sc->sc_flags &= ~CTF_AEOF; 593 } 594 /* 595 * Finally, if we didn't read anything we just passed an EOF 596 */ 597 else 598 sc->sc_flags |= CTF_AEOF; 599 #ifdef DEBUG 600 if (ctdebug & CDB_FILES) 601 printf("cteof: leaving flags %x\n", sc->sc_flags); 602 #endif 603 } 604 605 ctintr(unit) 606 register int unit; 607 { 608 register struct ct_softc *sc = &ct_softc[unit]; 609 register struct buf *bp, *dp; 610 u_char stat; 611 612 bp = cttab[unit].b_actf; 613 if (bp == NULL) { 614 printf("ct%d: bp == NULL\n", unit); 615 return; 616 } 617 if (sc->sc_flags & CTF_IO) { 618 sc->sc_flags &= ~CTF_IO; 619 if (hpibustart(sc->sc_hd->hp_ctlr)) 620 ctgo(unit); 621 return; 622 } 623 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 624 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 625 sc->sc_flags |= CTF_STATWAIT; 626 hpibawait(sc->sc_hd->hp_ctlr); 627 return; 628 } 629 } else 630 sc->sc_flags &= ~CTF_STATWAIT; 631 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 632 #ifdef DEBUG 633 if (ctdebug & CDB_FILES) 634 printf("ctintr: before flags %x\n", sc->sc_flags); 635 #endif 636 if (stat) { 637 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 638 sc->sc_rsc.cmd = C_STATUS; 639 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 640 &sc->sc_rsc, sizeof(sc->sc_rsc)); 641 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 642 &sc->sc_stat, sizeof(sc->sc_stat)); 643 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 644 &stat, 1); 645 #ifdef DEBUG 646 if (ctdebug & CDB_FILES) 647 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 648 stat, sc->sc_stat.c_aef, 649 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 650 #endif 651 if (stat == 0) { 652 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 653 cteof(sc, bp); 654 ctaddeof(unit); 655 goto done; 656 } 657 if (sc->sc_stat.c_fef & FEF_PF) { 658 ctreset(sc, sc->sc_hd); 659 ctstart(unit); 660 return; 661 } 662 if (sc->sc_stat.c_fef & FEF_REXMT) { 663 ctstart(unit); 664 return; 665 } 666 if (sc->sc_stat.c_aef & 0x5800) { 667 if (sc->sc_stat.c_aef & 0x4000) 668 tprintf(sc->sc_tpr, 669 "ct%d: uninitialized media\n", 670 unit); 671 if (sc->sc_stat.c_aef & 0x1000) 672 tprintf(sc->sc_tpr, 673 "ct%d: not ready\n", unit); 674 if (sc->sc_stat.c_aef & 0x0800) 675 tprintf(sc->sc_tpr, 676 "ct%d: write protect\n", unit); 677 } else { 678 printf("ct%d err: v%d u%d ru%d bn%d, ", 679 unit, 680 (sc->sc_stat.c_vu>>4)&0xF, 681 sc->sc_stat.c_vu&0xF, 682 sc->sc_stat.c_pend, 683 sc->sc_stat.c_blk); 684 printf("R0x%x F0x%x A0x%x I0x%x\n", 685 sc->sc_stat.c_ref, 686 sc->sc_stat.c_fef, 687 sc->sc_stat.c_aef, 688 sc->sc_stat.c_ief); 689 } 690 } else 691 printf("ct%d: request status failed\n", unit); 692 bp->b_flags |= B_ERROR; 693 bp->b_error = EIO; 694 goto done; 695 } else 696 bp->b_resid = 0; 697 if (sc->sc_flags & CTF_CMD) { 698 switch (sc->sc_cmd) { 699 case MTFSF: 700 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 701 sc->sc_blkno += CTBTOK(sc->sc_resid); 702 ctstart(unit); 703 return; 704 case MTBSF: 705 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 706 break; 707 case MTBSR: 708 sc->sc_flags &= ~CTF_BEOF; 709 if (sc->sc_flags & CTF_EOT) { 710 sc->sc_flags |= CTF_AEOF; 711 sc->sc_flags &= ~CTF_EOT; 712 } else if (sc->sc_flags & CTF_AEOF) { 713 sc->sc_flags |= CTF_BEOF; 714 sc->sc_flags &= ~CTF_AEOF; 715 } 716 break; 717 case MTWEOF: 718 sc->sc_flags &= ~CTF_BEOF; 719 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 720 sc->sc_flags |= CTF_EOT; 721 sc->sc_flags &= ~CTF_AEOF; 722 } else 723 sc->sc_flags |= CTF_AEOF; 724 break; 725 case MTREW: 726 case MTOFFL: 727 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 728 break; 729 } 730 } else { 731 sc->sc_flags &= ~CTF_AEOF; 732 sc->sc_blkno += CTBTOK(sc->sc_resid); 733 } 734 done: 735 #ifdef DEBUG 736 if (ctdebug & CDB_FILES) 737 printf("ctintr: after flags %x\n", sc->sc_flags); 738 #endif 739 if (dp = bp->b_actf) 740 dp->b_actb = bp->b_actb; 741 else 742 cttab[unit].b_actb = bp->b_actb; 743 *bp->b_actb = dp; 744 iodone(bp); 745 hpibfree(&sc->sc_dq); 746 if (cttab[unit].b_actf == NULL) { 747 cttab[unit].b_active = 0; 748 return; 749 } 750 ctustart(unit); 751 } 752 753 ctread(dev, uio) 754 dev_t dev; 755 struct uio *uio; 756 { 757 register int unit = UNIT(dev); 758 759 return(physio(ctstrategy, &ctbuf[unit], dev, B_READ, minphys, uio)); 760 } 761 762 ctwrite(dev, uio) 763 dev_t dev; 764 struct uio *uio; 765 { 766 register int unit = UNIT(dev); 767 768 return(physio(ctstrategy, &ctbuf[unit], dev, B_WRITE, minphys, uio)); 769 } 770 771 /*ARGSUSED*/ 772 ctioctl(dev, cmd, data, flag) 773 dev_t dev; 774 int cmd, flag; 775 caddr_t data; 776 { 777 register struct mtop *op; 778 register int cnt; 779 780 switch (cmd) { 781 782 case MTIOCTOP: 783 op = (struct mtop *)data; 784 switch(op->mt_op) { 785 786 case MTWEOF: 787 case MTFSF: 788 case MTBSR: 789 case MTBSF: 790 case MTFSR: 791 cnt = op->mt_count; 792 break; 793 794 case MTREW: 795 case MTOFFL: 796 cnt = 1; 797 break; 798 799 default: 800 return(EINVAL); 801 } 802 ctcommand(dev, op->mt_op, cnt); 803 break; 804 805 case MTIOCGET: 806 break; 807 808 default: 809 return(EINVAL); 810 } 811 return(0); 812 } 813 814 /*ARGSUSED*/ 815 ctdump(dev) 816 dev_t dev; 817 { 818 return(ENXIO); 819 } 820 821 ctaddeof(unit) 822 int unit; 823 { 824 register struct ct_softc *sc = &ct_softc[unit]; 825 826 if (sc->sc_eofp == EOFS - 1) 827 sc->sc_eofs[EOFS - 1]++; 828 else { 829 sc->sc_eofp++; 830 if (sc->sc_eofp == EOFS - 1) 831 sc->sc_eofs[EOFS - 1] = EOFS; 832 else 833 /* save blkno */ 834 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 835 } 836 #ifdef DEBUG 837 if (ctdebug & CT_BSF) 838 printf("ct%d: add eof pos %d blk %d\n", 839 unit, sc->sc_eofp, 840 sc->sc_eofs[sc->sc_eofp]); 841 #endif 842 } 843 #endif 844