1 /* 2 * Copyright (c) 1982, 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)ct.c 7.3 (Berkeley) 05/04/91 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 "param.h" 27 #include "buf.h" 28 #include "ioctl.h" 29 #include "mtio.h" 30 #include "tprintf.h" 31 #include "proc.h" 32 33 #include "ctreg.h" 34 #include "device.h" 35 36 /* number of eof marks to remember */ 37 #define EOFS 128 38 39 int ctinit(), ctstart(), ctgo(), ctintr(); 40 struct driver ctdriver = { 41 ctinit, "ct", ctstart, ctgo, ctintr, 42 }; 43 44 struct ct_softc { 45 struct hp_device *sc_hd; 46 struct ct_iocmd sc_ioc; 47 struct ct_rscmd sc_rsc; 48 struct ct_stat sc_stat; 49 struct ct_ssmcmd sc_ssmc; 50 struct ct_srcmd sc_src; 51 struct ct_soptcmd sc_soptc; 52 struct ct_ulcmd sc_ul; 53 struct ct_wfmcmd sc_wfm; 54 struct ct_clearcmd sc_clear; 55 struct buf *sc_bp; 56 int sc_blkno; 57 int sc_cmd; 58 int sc_resid; 59 char *sc_addr; 60 int sc_flags; 61 short sc_type; 62 short sc_punit; 63 tpr_t sc_tpr; 64 struct devqueue sc_dq; 65 int sc_eofp; 66 int sc_eofs[EOFS]; 67 } ct_softc[NCT]; 68 69 /* flags */ 70 #define CTF_OPEN 0x01 71 #define CTF_ALIVE 0x02 72 #define CTF_WRT 0x04 73 #define CTF_CMD 0x08 74 #define CTF_IO 0x10 75 #define CTF_BEOF 0x20 76 #define CTF_AEOF 0x40 77 #define CTF_EOT 0x80 78 #define CTF_STATWAIT 0x100 79 #define CTF_CANSTREAM 0x200 80 #define CTF_WRTTN 0x400 81 82 struct ctinfo { 83 short hwid; 84 short punit; 85 char *desc; 86 } ctinfo[] = { 87 CT7946ID, 1, "7946A", 88 CT7912PID, 1, "7912P", 89 CT7914PID, 1, "7914P", 90 CT9144ID, 0, "9144", 91 CT9145ID, 0, "9145", 92 }; 93 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 94 95 struct buf cttab[NCT]; 96 struct buf ctbuf[NCT]; 97 98 #define CT_NOREW 4 99 #define CT_STREAM 8 100 #define UNIT(x) (minor(x) & 3) 101 #define ctpunit(x) ((x) & 7) 102 103 #ifdef DEBUG 104 int ctdebug = 0; 105 #define CDB_FILES 0x01 106 #define CT_BSF 0x02 107 #endif 108 109 ctinit(hd) 110 register struct hp_device *hd; 111 { 112 register struct ct_softc *sc = &ct_softc[hd->hp_unit]; 113 114 sc->sc_hd = hd; 115 sc->sc_punit = ctpunit(hd->hp_flags); 116 if (ctident(sc, hd) < 0) 117 return(0); 118 ctreset(sc, hd); 119 sc->sc_dq.dq_ctlr = hd->hp_ctlr; 120 sc->sc_dq.dq_unit = hd->hp_unit; 121 sc->sc_dq.dq_slave = hd->hp_slave; 122 sc->sc_dq.dq_driver = &ctdriver; 123 sc->sc_flags |= CTF_ALIVE; 124 return(1); 125 } 126 127 ctident(sc, hd) 128 register struct ct_softc *sc; 129 register struct hp_device *hd; 130 { 131 struct ct_describe desc; 132 u_char stat, cmd[3]; 133 char name[7]; 134 int id, i; 135 136 /* 137 * Read device id and verify that: 138 * 1. It is a CS80 device 139 * 2. It is one of our recognized tape devices 140 * 3. It has the proper physical unit number 141 */ 142 id = hpibid(hd->hp_ctlr, hd->hp_slave); 143 if ((id & 0x200) == 0) 144 return(-1); 145 for (i = 0; i < nctinfo; i++) 146 if (id == ctinfo[i].hwid) 147 break; 148 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 149 return(-1); 150 id = i; 151 152 /* 153 * Collect device description. 154 * Right now we only need this to differentiate 7945 from 7946. 155 * Note that we always issue the describe command to unit 0. 156 */ 157 cmd[0] = C_SUNIT(0); 158 cmd[1] = C_SVOL(0); 159 cmd[2] = C_DESC; 160 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 161 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 162 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 163 bzero(name, sizeof(name)); 164 if (!stat) { 165 register int n = desc.d_name; 166 for (i = 5; i >= 0; i--) { 167 name[i] = (n & 0xf) + '0'; 168 n >>= 4; 169 } 170 } 171 switch (ctinfo[id].hwid) { 172 case CT7946ID: 173 if (bcmp(name, "079450", 6) == 0) 174 return(-1); /* not really a 7946 */ 175 /* fall into... */ 176 case CT9144ID: 177 case CT9145ID: 178 sc->sc_type = CT9144; 179 sc->sc_flags |= CTF_CANSTREAM; 180 break; 181 182 case CT7912PID: 183 case CT7914PID: 184 sc->sc_type = CT88140; 185 break; 186 } 187 printf("ct%d: %s %stape\n", hd->hp_unit, ctinfo[id].desc, 188 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 189 return(id); 190 } 191 192 ctreset(sc, hd) 193 register struct ct_softc *sc; 194 register struct hp_device *hd; 195 { 196 u_char stat; 197 198 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 199 sc->sc_clear.cmd = C_CLEAR; 200 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 201 sizeof(sc->sc_clear)); 202 hpibswait(hd->hp_ctlr, hd->hp_slave); 203 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 204 sc->sc_src.unit = C_SUNIT(CTCTLR); 205 sc->sc_src.nop = C_NOP; 206 sc->sc_src.cmd = C_SREL; 207 sc->sc_src.param = C_REL; 208 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 209 sizeof(sc->sc_src)); 210 hpibswait(hd->hp_ctlr, hd->hp_slave); 211 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 212 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 213 sc->sc_ssmc.cmd = C_SSM; 214 sc->sc_ssmc.refm = REF_MASK; 215 sc->sc_ssmc.fefm = FEF_MASK; 216 sc->sc_ssmc.aefm = AEF_MASK; 217 sc->sc_ssmc.iefm = IEF_MASK; 218 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 219 sizeof(sc->sc_ssmc)); 220 hpibswait(hd->hp_ctlr, hd->hp_slave); 221 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 222 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 223 sc->sc_soptc.nop = C_NOP; 224 sc->sc_soptc.cmd = C_SOPT; 225 sc->sc_soptc.opt = C_SPAR; 226 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 227 sizeof(sc->sc_soptc)); 228 hpibswait(hd->hp_ctlr, hd->hp_slave); 229 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 230 } 231 232 /*ARGSUSED*/ 233 ctopen(dev, flag, type, p) 234 dev_t dev; 235 int flag, type; 236 struct proc *p; 237 { 238 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 239 u_char stat; 240 int cc; 241 242 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 243 return(ENXIO); 244 if (sc->sc_flags & CTF_OPEN) 245 return(EBUSY); 246 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 247 sc->sc_soptc.nop = C_NOP; 248 sc->sc_soptc.cmd = C_SOPT; 249 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 250 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 251 else 252 sc->sc_soptc.opt = C_SPAR; 253 /* 254 * Check the return of hpibsend() and hpibswait(). 255 * Drive could be loading/unloading a tape. If not checked, 256 * driver hangs. 257 */ 258 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 259 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 260 if (cc != sizeof(sc->sc_soptc)) 261 return(EBUSY); 262 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 263 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 264 &stat, sizeof(stat)); 265 if (cc != sizeof(stat)) 266 return(EBUSY); 267 sc->sc_tpr = tprintf_open(p); 268 sc->sc_flags |= CTF_OPEN; 269 return(0); 270 } 271 272 /*ARGSUSED*/ 273 ctclose(dev, flag) 274 dev_t dev; 275 { 276 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 277 278 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 279 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 280 ctcommand(dev, MTWEOF, 2); 281 ctcommand(dev, MTBSR, 1); 282 if (sc->sc_eofp == EOFS - 1) 283 sc->sc_eofs[EOFS - 1]--; 284 else 285 sc->sc_eofp--; 286 #ifdef DEBUG 287 if(ctdebug & CT_BSF) 288 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 289 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 290 #endif 291 } 292 if ((minor(dev) & CT_NOREW) == 0) 293 ctcommand(dev, MTREW, 1); 294 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 295 tprintf_close(sc->sc_tpr); 296 #ifdef DEBUG 297 if (ctdebug & CDB_FILES) 298 printf("ctclose: flags %x\n", sc->sc_flags); 299 #endif 300 return(0); /* XXX */ 301 } 302 303 ctcommand(dev, cmd, cnt) 304 dev_t dev; 305 register int cnt; 306 { 307 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 308 register struct buf *bp = &ctbuf[UNIT(dev)]; 309 register struct buf *nbp = 0; 310 311 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 312 cnt = sc->sc_eofs[EOFS - 1] - cnt; 313 ctcommand(dev, MTREW, 1); 314 ctcommand(dev, MTFSF, cnt); 315 cnt = 2; 316 cmd = MTBSR; 317 } 318 319 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 320 cnt = 1; 321 cmd = MTREW; 322 } 323 324 sc->sc_flags |= CTF_CMD; 325 sc->sc_bp = bp; 326 sc->sc_cmd = cmd; 327 bp->b_dev = dev; 328 if (cmd == MTFSF) { 329 nbp = (struct buf *)geteblk(MAXBSIZE); 330 bp->b_un.b_addr = nbp->b_un.b_addr; 331 bp->b_bcount = MAXBSIZE; 332 } 333 again: 334 bp->b_flags = B_BUSY; 335 if (cmd == MTBSF) { 336 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 337 sc->sc_eofp--; 338 #ifdef DEBUG 339 if (ctdebug & CT_BSF) 340 printf("ct%d: backup eof pos %d blk %d\n", 341 UNIT(dev), sc->sc_eofp, 342 sc->sc_eofs[sc->sc_eofp]); 343 #endif 344 } 345 ctstrategy(bp); 346 iowait(bp); 347 if (--cnt > 0) 348 goto again; 349 bp->b_flags = 0; 350 sc->sc_flags &= ~CTF_CMD; 351 if (nbp) 352 brelse(nbp); 353 } 354 355 ctstrategy(bp) 356 register struct buf *bp; 357 { 358 register struct buf *dp; 359 register int s, unit; 360 361 unit = UNIT(bp->b_dev); 362 dp = &cttab[unit]; 363 bp->av_forw = NULL; 364 s = splbio(); 365 if (dp->b_actf == NULL) 366 dp->b_actf = bp; 367 else 368 dp->b_actl->av_forw = bp; 369 dp->b_actl = bp; 370 if (dp->b_active == 0) { 371 dp->b_active = 1; 372 ctustart(unit); 373 } 374 splx(s); 375 } 376 377 ctustart(unit) 378 register int unit; 379 { 380 register struct ct_softc *sc = &ct_softc[unit]; 381 register struct buf *bp; 382 383 bp = cttab[unit].b_actf; 384 sc->sc_addr = bp->b_un.b_addr; 385 sc->sc_resid = bp->b_bcount; 386 if (hpibreq(&sc->sc_dq)) 387 ctstart(unit); 388 } 389 390 ctstart(unit) 391 register int unit; 392 { 393 register struct ct_softc *sc = &ct_softc[unit]; 394 register struct buf *bp; 395 register int i; 396 397 bp = cttab[unit].b_actf; 398 again: 399 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 400 switch(sc->sc_cmd) { 401 402 case MTFSF: 403 bp->b_flags |= B_READ; 404 goto mustio; 405 406 case MTBSF: 407 goto gotaddr; 408 409 case MTOFFL: 410 sc->sc_blkno = 0; 411 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 412 sc->sc_ul.cmd = C_UNLOAD; 413 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 414 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 415 break; 416 417 case MTWEOF: 418 sc->sc_blkno++; 419 sc->sc_flags |= CTF_WRT; 420 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 421 sc->sc_wfm.cmd = C_WFM; 422 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 423 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 424 ctaddeof(unit); 425 break; 426 427 case MTBSR: 428 sc->sc_blkno--; 429 goto gotaddr; 430 431 case MTFSR: 432 sc->sc_blkno++; 433 goto gotaddr; 434 435 case MTREW: 436 sc->sc_blkno = 0; 437 #ifdef DEBUG 438 if(ctdebug & CT_BSF) 439 printf("ct%d: clearing eofs\n", unit); 440 #endif 441 for (i=0; i<EOFS; i++) 442 sc->sc_eofs[i] = 0; 443 sc->sc_eofp = 0; 444 445 gotaddr: 446 sc->sc_ioc.saddr = C_SADDR; 447 sc->sc_ioc.addr0 = 0; 448 sc->sc_ioc.addr = sc->sc_blkno; 449 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 450 sc->sc_ioc.nop2 = C_NOP; 451 sc->sc_ioc.slen = C_SLEN; 452 sc->sc_ioc.len = 0; 453 sc->sc_ioc.nop3 = C_NOP; 454 sc->sc_ioc.cmd = C_READ; 455 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 456 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 457 break; 458 } 459 } 460 else { 461 mustio: 462 if ((bp->b_flags & B_READ) && 463 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 464 #ifdef DEBUG 465 if (ctdebug & CDB_FILES) 466 printf("ctstart: before flags %x\n", sc->sc_flags); 467 #endif 468 if (sc->sc_flags & CTF_BEOF) { 469 sc->sc_flags &= ~CTF_BEOF; 470 sc->sc_flags |= CTF_AEOF; 471 #ifdef DEBUG 472 if (ctdebug & CDB_FILES) 473 printf("ctstart: after flags %x\n", sc->sc_flags); 474 #endif 475 } 476 bp->b_resid = bp->b_bcount; 477 iodone(bp); 478 hpibfree(&sc->sc_dq); 479 cttab[unit].b_actf = bp = bp->av_forw; 480 if (bp == NULL) { 481 cttab[unit].b_active = 0; 482 return; 483 } 484 sc->sc_addr = bp->b_un.b_addr; 485 sc->sc_resid = bp->b_bcount; 486 if (hpibreq(&sc->sc_dq)) 487 goto again; 488 return; 489 } 490 sc->sc_flags |= CTF_IO; 491 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 492 sc->sc_ioc.saddr = C_SADDR; 493 sc->sc_ioc.addr0 = 0; 494 sc->sc_ioc.addr = sc->sc_blkno; 495 sc->sc_ioc.nop2 = C_NOP; 496 sc->sc_ioc.slen = C_SLEN; 497 sc->sc_ioc.len = sc->sc_resid; 498 sc->sc_ioc.nop3 = C_NOP; 499 if (bp->b_flags & B_READ) 500 sc->sc_ioc.cmd = C_READ; 501 else { 502 sc->sc_ioc.cmd = C_WRITE; 503 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 504 } 505 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 506 &sc->sc_ioc, sizeof(sc->sc_ioc)); 507 } 508 hpibawait(sc->sc_hd->hp_ctlr); 509 } 510 511 ctgo(unit) 512 register int unit; 513 { 514 register struct ct_softc *sc = &ct_softc[unit]; 515 register struct buf *bp; 516 517 bp = cttab[unit].b_actf; 518 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 519 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 520 } 521 522 /* 523 * Hideous grue to handle EOF/EOT (mostly for reads) 524 */ 525 cteof(sc, bp) 526 register struct ct_softc *sc; 527 register struct buf *bp; 528 { 529 long blks; 530 531 /* 532 * EOT on a write is an error. 533 */ 534 if ((bp->b_flags & B_READ) == 0) { 535 bp->b_resid = bp->b_bcount; 536 bp->b_flags |= B_ERROR; 537 bp->b_error = ENOSPC; 538 sc->sc_flags |= CTF_EOT; 539 return; 540 } 541 /* 542 * Use returned block position to determine how many blocks 543 * we really read and update b_resid. 544 */ 545 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 546 #ifdef DEBUG 547 if (ctdebug & CDB_FILES) 548 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 549 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 550 blks, bp->b_bcount - CTKTOB(blks)); 551 #endif 552 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 553 blks = 0; 554 sc->sc_blkno++; 555 } 556 else { 557 sc->sc_blkno = sc->sc_stat.c_blk; 558 } 559 bp->b_resid = bp->b_bcount - CTKTOB(blks); 560 /* 561 * If we are at physical EOV or were after an EOF, 562 * we are now at logical EOT. 563 */ 564 if ((sc->sc_stat.c_aef & AEF_EOV) || 565 (sc->sc_flags & CTF_AEOF)) { 566 sc->sc_flags |= CTF_EOT; 567 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 568 } 569 /* 570 * If we were before an EOF or we have just completed a FSF, 571 * we are now after EOF. 572 */ 573 else if ((sc->sc_flags & CTF_BEOF) || 574 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 575 sc->sc_flags |= CTF_AEOF; 576 sc->sc_flags &= ~CTF_BEOF; 577 } 578 /* 579 * Otherwise if we read something we are now before EOF 580 * (and no longer after EOF). 581 */ 582 else if (blks) { 583 sc->sc_flags |= CTF_BEOF; 584 sc->sc_flags &= ~CTF_AEOF; 585 } 586 /* 587 * Finally, if we didn't read anything we just passed an EOF 588 */ 589 else 590 sc->sc_flags |= CTF_AEOF; 591 #ifdef DEBUG 592 if (ctdebug & CDB_FILES) 593 printf("cteof: leaving flags %x\n", sc->sc_flags); 594 #endif 595 } 596 597 ctintr(unit) 598 register int unit; 599 { 600 register struct ct_softc *sc = &ct_softc[unit]; 601 register struct buf *bp; 602 u_char stat; 603 604 bp = cttab[unit].b_actf; 605 if (bp == NULL) { 606 printf("ct%d: bp == NULL\n", unit); 607 return; 608 } 609 if (sc->sc_flags & CTF_IO) { 610 sc->sc_flags &= ~CTF_IO; 611 if (hpibustart(sc->sc_hd->hp_ctlr)) 612 ctgo(unit); 613 return; 614 } 615 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 616 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 617 sc->sc_flags |= CTF_STATWAIT; 618 hpibawait(sc->sc_hd->hp_ctlr); 619 return; 620 } 621 } else 622 sc->sc_flags &= ~CTF_STATWAIT; 623 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 624 #ifdef DEBUG 625 if (ctdebug & CDB_FILES) 626 printf("ctintr: before flags %x\n", sc->sc_flags); 627 #endif 628 if (stat) { 629 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 630 sc->sc_rsc.cmd = C_STATUS; 631 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 632 &sc->sc_rsc, sizeof(sc->sc_rsc)); 633 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 634 &sc->sc_stat, sizeof(sc->sc_stat)); 635 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 636 &stat, 1); 637 #ifdef DEBUG 638 if (ctdebug & CDB_FILES) 639 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 640 stat, sc->sc_stat.c_aef, 641 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 642 #endif 643 if (stat == 0) { 644 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 645 cteof(sc, bp); 646 ctaddeof(unit); 647 goto done; 648 } 649 if (sc->sc_stat.c_fef & FEF_PF) { 650 ctreset(sc, sc->sc_hd); 651 ctstart(unit); 652 return; 653 } 654 if (sc->sc_stat.c_fef & FEF_REXMT) { 655 ctstart(unit); 656 return; 657 } 658 if (sc->sc_stat.c_aef & 0x5800) { 659 if (sc->sc_stat.c_aef & 0x4000) 660 tprintf(sc->sc_tpr, 661 "ct%d: uninitialized media\n", 662 unit); 663 if (sc->sc_stat.c_aef & 0x1000) 664 tprintf(sc->sc_tpr, 665 "ct%d: not ready\n", unit); 666 if (sc->sc_stat.c_aef & 0x0800) 667 tprintf(sc->sc_tpr, 668 "ct%d: write protect\n", unit); 669 } else { 670 printf("ct%d err: v%d u%d ru%d bn%d, ", 671 unit, 672 (sc->sc_stat.c_vu>>4)&0xF, 673 sc->sc_stat.c_vu&0xF, 674 sc->sc_stat.c_pend, 675 sc->sc_stat.c_blk); 676 printf("R0x%x F0x%x A0x%x I0x%x\n", 677 sc->sc_stat.c_ref, 678 sc->sc_stat.c_fef, 679 sc->sc_stat.c_aef, 680 sc->sc_stat.c_ief); 681 } 682 } else 683 printf("ct%d: request status failed\n", unit); 684 bp->b_flags |= B_ERROR; 685 bp->b_error = EIO; 686 goto done; 687 } else 688 bp->b_resid = 0; 689 if (sc->sc_flags & CTF_CMD) { 690 switch (sc->sc_cmd) { 691 case MTFSF: 692 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 693 sc->sc_blkno += CTBTOK(sc->sc_resid); 694 ctstart(unit); 695 return; 696 case MTBSF: 697 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 698 break; 699 case MTBSR: 700 sc->sc_flags &= ~CTF_BEOF; 701 if (sc->sc_flags & CTF_EOT) { 702 sc->sc_flags |= CTF_AEOF; 703 sc->sc_flags &= ~CTF_EOT; 704 } else if (sc->sc_flags & CTF_AEOF) { 705 sc->sc_flags |= CTF_BEOF; 706 sc->sc_flags &= ~CTF_AEOF; 707 } 708 break; 709 case MTWEOF: 710 sc->sc_flags &= ~CTF_BEOF; 711 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 712 sc->sc_flags |= CTF_EOT; 713 sc->sc_flags &= ~CTF_AEOF; 714 } else 715 sc->sc_flags |= CTF_AEOF; 716 break; 717 case MTREW: 718 case MTOFFL: 719 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 720 break; 721 } 722 } else { 723 sc->sc_flags &= ~CTF_AEOF; 724 sc->sc_blkno += CTBTOK(sc->sc_resid); 725 } 726 done: 727 #ifdef DEBUG 728 if (ctdebug & CDB_FILES) 729 printf("ctintr: after flags %x\n", sc->sc_flags); 730 #endif 731 cttab[unit].b_actf = bp->av_forw; 732 iodone(bp); 733 hpibfree(&sc->sc_dq); 734 if (cttab[unit].b_actf == NULL) { 735 cttab[unit].b_active = 0; 736 return; 737 } 738 ctustart(unit); 739 } 740 741 ctread(dev, uio) 742 dev_t dev; 743 struct uio *uio; 744 { 745 register int unit = UNIT(dev); 746 747 return(physio(ctstrategy, &ctbuf[unit], dev, B_READ, minphys, uio)); 748 } 749 750 ctwrite(dev, uio) 751 dev_t dev; 752 struct uio *uio; 753 { 754 register int unit = UNIT(dev); 755 756 return(physio(ctstrategy, &ctbuf[unit], dev, B_WRITE, minphys, uio)); 757 } 758 759 /*ARGSUSED*/ 760 ctioctl(dev, cmd, data, flag) 761 dev_t dev; 762 caddr_t data; 763 { 764 register struct mtop *op; 765 register int cnt; 766 767 switch (cmd) { 768 769 case MTIOCTOP: 770 op = (struct mtop *)data; 771 switch(op->mt_op) { 772 773 case MTWEOF: 774 case MTFSF: 775 case MTBSR: 776 case MTBSF: 777 case MTFSR: 778 cnt = op->mt_count; 779 break; 780 781 case MTREW: 782 case MTOFFL: 783 cnt = 1; 784 break; 785 786 default: 787 return(EINVAL); 788 } 789 ctcommand(dev, op->mt_op, cnt); 790 break; 791 792 case MTIOCGET: 793 break; 794 795 default: 796 return(EINVAL); 797 } 798 return(0); 799 } 800 801 /*ARGSUSED*/ 802 ctdump(dev) 803 dev_t dev; 804 { 805 return(ENXIO); 806 } 807 808 ctaddeof(unit) 809 int unit; 810 { 811 register struct ct_softc *sc = &ct_softc[unit]; 812 813 if (sc->sc_eofp == EOFS - 1) 814 sc->sc_eofs[EOFS - 1]++; 815 else { 816 sc->sc_eofp++; 817 if (sc->sc_eofp == EOFS - 1) 818 sc->sc_eofs[EOFS - 1] = EOFS; 819 else 820 /* save blkno */ 821 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 822 } 823 #ifdef DEBUG 824 if (ctdebug & CT_BSF) 825 printf("ct%d: add eof pos %d blk %d\n", 826 unit, sc->sc_eofp, 827 sc->sc_eofs[sc->sc_eofp]); 828 #endif 829 } 830 #endif 831