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 8.1 (Berkeley) 06/10/93 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 { 280 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 281 282 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 283 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 284 ctcommand(dev, MTWEOF, 2); 285 ctcommand(dev, MTBSR, 1); 286 if (sc->sc_eofp == EOFS - 1) 287 sc->sc_eofs[EOFS - 1]--; 288 else 289 sc->sc_eofp--; 290 #ifdef DEBUG 291 if(ctdebug & CT_BSF) 292 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 293 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 294 #endif 295 } 296 if ((minor(dev) & CT_NOREW) == 0) 297 ctcommand(dev, MTREW, 1); 298 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 299 tprintf_close(sc->sc_tpr); 300 #ifdef DEBUG 301 if (ctdebug & CDB_FILES) 302 printf("ctclose: flags %x\n", sc->sc_flags); 303 #endif 304 return(0); /* XXX */ 305 } 306 307 ctcommand(dev, cmd, cnt) 308 dev_t dev; 309 register int cnt; 310 { 311 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 312 register struct buf *bp = &ctbuf[UNIT(dev)]; 313 register struct buf *nbp = 0; 314 315 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 316 cnt = sc->sc_eofs[EOFS - 1] - cnt; 317 ctcommand(dev, MTREW, 1); 318 ctcommand(dev, MTFSF, cnt); 319 cnt = 2; 320 cmd = MTBSR; 321 } 322 323 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 324 cnt = 1; 325 cmd = MTREW; 326 } 327 328 sc->sc_flags |= CTF_CMD; 329 sc->sc_bp = bp; 330 sc->sc_cmd = cmd; 331 bp->b_dev = dev; 332 if (cmd == MTFSF) { 333 nbp = (struct buf *)geteblk(MAXBSIZE); 334 bp->b_un.b_addr = nbp->b_un.b_addr; 335 bp->b_bcount = MAXBSIZE; 336 } 337 again: 338 bp->b_flags = B_BUSY; 339 if (cmd == MTBSF) { 340 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 341 sc->sc_eofp--; 342 #ifdef DEBUG 343 if (ctdebug & CT_BSF) 344 printf("ct%d: backup eof pos %d blk %d\n", 345 UNIT(dev), sc->sc_eofp, 346 sc->sc_eofs[sc->sc_eofp]); 347 #endif 348 } 349 ctstrategy(bp); 350 iowait(bp); 351 if (--cnt > 0) 352 goto again; 353 bp->b_flags = 0; 354 sc->sc_flags &= ~CTF_CMD; 355 if (nbp) 356 brelse(nbp); 357 } 358 359 ctstrategy(bp) 360 register struct buf *bp; 361 { 362 register struct buf *dp; 363 register int s, unit; 364 365 unit = UNIT(bp->b_dev); 366 dp = &cttab[unit]; 367 bp->b_actf = NULL; 368 s = splbio(); 369 bp->b_actb = dp->b_actb; 370 *dp->b_actb = bp; 371 dp->b_actb = &bp->b_actf; 372 if (dp->b_active == 0) { 373 dp->b_active = 1; 374 ctustart(unit); 375 } 376 splx(s); 377 } 378 379 ctustart(unit) 380 register int unit; 381 { 382 register struct ct_softc *sc = &ct_softc[unit]; 383 register struct buf *bp; 384 385 bp = cttab[unit].b_actf; 386 sc->sc_addr = bp->b_un.b_addr; 387 sc->sc_resid = bp->b_bcount; 388 if (hpibreq(&sc->sc_dq)) 389 ctstart(unit); 390 } 391 392 ctstart(unit) 393 register int unit; 394 { 395 register struct ct_softc *sc = &ct_softc[unit]; 396 register struct buf *bp, *dp; 397 register int i; 398 399 bp = cttab[unit].b_actf; 400 again: 401 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 402 switch(sc->sc_cmd) { 403 404 case MTFSF: 405 bp->b_flags |= B_READ; 406 goto mustio; 407 408 case MTBSF: 409 goto gotaddr; 410 411 case MTOFFL: 412 sc->sc_blkno = 0; 413 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 414 sc->sc_ul.cmd = C_UNLOAD; 415 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 416 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 417 break; 418 419 case MTWEOF: 420 sc->sc_blkno++; 421 sc->sc_flags |= CTF_WRT; 422 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 423 sc->sc_wfm.cmd = C_WFM; 424 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 425 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 426 ctaddeof(unit); 427 break; 428 429 case MTBSR: 430 sc->sc_blkno--; 431 goto gotaddr; 432 433 case MTFSR: 434 sc->sc_blkno++; 435 goto gotaddr; 436 437 case MTREW: 438 sc->sc_blkno = 0; 439 #ifdef DEBUG 440 if(ctdebug & CT_BSF) 441 printf("ct%d: clearing eofs\n", unit); 442 #endif 443 for (i=0; i<EOFS; i++) 444 sc->sc_eofs[i] = 0; 445 sc->sc_eofp = 0; 446 447 gotaddr: 448 sc->sc_ioc.saddr = C_SADDR; 449 sc->sc_ioc.addr0 = 0; 450 sc->sc_ioc.addr = sc->sc_blkno; 451 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 452 sc->sc_ioc.nop2 = C_NOP; 453 sc->sc_ioc.slen = C_SLEN; 454 sc->sc_ioc.len = 0; 455 sc->sc_ioc.nop3 = C_NOP; 456 sc->sc_ioc.cmd = C_READ; 457 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 458 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 459 break; 460 } 461 } 462 else { 463 mustio: 464 if ((bp->b_flags & B_READ) && 465 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 466 #ifdef DEBUG 467 if (ctdebug & CDB_FILES) 468 printf("ctstart: before flags %x\n", sc->sc_flags); 469 #endif 470 if (sc->sc_flags & CTF_BEOF) { 471 sc->sc_flags &= ~CTF_BEOF; 472 sc->sc_flags |= CTF_AEOF; 473 #ifdef DEBUG 474 if (ctdebug & CDB_FILES) 475 printf("ctstart: after flags %x\n", sc->sc_flags); 476 #endif 477 } 478 bp->b_resid = bp->b_bcount; 479 iodone(bp); 480 hpibfree(&sc->sc_dq); 481 if (dp = bp->b_actf) 482 dp->b_actb = bp->b_actb; 483 else 484 cttab[unit].b_actb = bp->b_actb; 485 *bp->b_actb = dp; 486 if ((bp = dp) == NULL) { 487 cttab[unit].b_active = 0; 488 return; 489 } 490 sc->sc_addr = bp->b_un.b_addr; 491 sc->sc_resid = bp->b_bcount; 492 if (hpibreq(&sc->sc_dq)) 493 goto again; 494 return; 495 } 496 sc->sc_flags |= CTF_IO; 497 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 498 sc->sc_ioc.saddr = C_SADDR; 499 sc->sc_ioc.addr0 = 0; 500 sc->sc_ioc.addr = sc->sc_blkno; 501 sc->sc_ioc.nop2 = C_NOP; 502 sc->sc_ioc.slen = C_SLEN; 503 sc->sc_ioc.len = sc->sc_resid; 504 sc->sc_ioc.nop3 = C_NOP; 505 if (bp->b_flags & B_READ) 506 sc->sc_ioc.cmd = C_READ; 507 else { 508 sc->sc_ioc.cmd = C_WRITE; 509 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 510 } 511 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 512 &sc->sc_ioc, sizeof(sc->sc_ioc)); 513 } 514 hpibawait(sc->sc_hd->hp_ctlr); 515 } 516 517 ctgo(unit) 518 register int unit; 519 { 520 register struct ct_softc *sc = &ct_softc[unit]; 521 register struct buf *bp; 522 523 bp = cttab[unit].b_actf; 524 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 525 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 526 } 527 528 /* 529 * Hideous grue to handle EOF/EOT (mostly for reads) 530 */ 531 cteof(sc, bp) 532 register struct ct_softc *sc; 533 register struct buf *bp; 534 { 535 long blks; 536 537 /* 538 * EOT on a write is an error. 539 */ 540 if ((bp->b_flags & B_READ) == 0) { 541 bp->b_resid = bp->b_bcount; 542 bp->b_flags |= B_ERROR; 543 bp->b_error = ENOSPC; 544 sc->sc_flags |= CTF_EOT; 545 return; 546 } 547 /* 548 * Use returned block position to determine how many blocks 549 * we really read and update b_resid. 550 */ 551 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 552 #ifdef DEBUG 553 if (ctdebug & CDB_FILES) 554 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 555 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 556 blks, bp->b_bcount - CTKTOB(blks)); 557 #endif 558 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 559 blks = 0; 560 sc->sc_blkno++; 561 } 562 else { 563 sc->sc_blkno = sc->sc_stat.c_blk; 564 } 565 bp->b_resid = bp->b_bcount - CTKTOB(blks); 566 /* 567 * If we are at physical EOV or were after an EOF, 568 * we are now at logical EOT. 569 */ 570 if ((sc->sc_stat.c_aef & AEF_EOV) || 571 (sc->sc_flags & CTF_AEOF)) { 572 sc->sc_flags |= CTF_EOT; 573 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 574 } 575 /* 576 * If we were before an EOF or we have just completed a FSF, 577 * we are now after EOF. 578 */ 579 else if ((sc->sc_flags & CTF_BEOF) || 580 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 581 sc->sc_flags |= CTF_AEOF; 582 sc->sc_flags &= ~CTF_BEOF; 583 } 584 /* 585 * Otherwise if we read something we are now before EOF 586 * (and no longer after EOF). 587 */ 588 else if (blks) { 589 sc->sc_flags |= CTF_BEOF; 590 sc->sc_flags &= ~CTF_AEOF; 591 } 592 /* 593 * Finally, if we didn't read anything we just passed an EOF 594 */ 595 else 596 sc->sc_flags |= CTF_AEOF; 597 #ifdef DEBUG 598 if (ctdebug & CDB_FILES) 599 printf("cteof: leaving flags %x\n", sc->sc_flags); 600 #endif 601 } 602 603 ctintr(unit) 604 register int unit; 605 { 606 register struct ct_softc *sc = &ct_softc[unit]; 607 register struct buf *bp, *dp; 608 u_char stat; 609 610 bp = cttab[unit].b_actf; 611 if (bp == NULL) { 612 printf("ct%d: bp == NULL\n", unit); 613 return; 614 } 615 if (sc->sc_flags & CTF_IO) { 616 sc->sc_flags &= ~CTF_IO; 617 if (hpibustart(sc->sc_hd->hp_ctlr)) 618 ctgo(unit); 619 return; 620 } 621 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 622 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 623 sc->sc_flags |= CTF_STATWAIT; 624 hpibawait(sc->sc_hd->hp_ctlr); 625 return; 626 } 627 } else 628 sc->sc_flags &= ~CTF_STATWAIT; 629 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 630 #ifdef DEBUG 631 if (ctdebug & CDB_FILES) 632 printf("ctintr: before flags %x\n", sc->sc_flags); 633 #endif 634 if (stat) { 635 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 636 sc->sc_rsc.cmd = C_STATUS; 637 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 638 &sc->sc_rsc, sizeof(sc->sc_rsc)); 639 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 640 &sc->sc_stat, sizeof(sc->sc_stat)); 641 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 642 &stat, 1); 643 #ifdef DEBUG 644 if (ctdebug & CDB_FILES) 645 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 646 stat, sc->sc_stat.c_aef, 647 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 648 #endif 649 if (stat == 0) { 650 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 651 cteof(sc, bp); 652 ctaddeof(unit); 653 goto done; 654 } 655 if (sc->sc_stat.c_fef & FEF_PF) { 656 ctreset(sc, sc->sc_hd); 657 ctstart(unit); 658 return; 659 } 660 if (sc->sc_stat.c_fef & FEF_REXMT) { 661 ctstart(unit); 662 return; 663 } 664 if (sc->sc_stat.c_aef & 0x5800) { 665 if (sc->sc_stat.c_aef & 0x4000) 666 tprintf(sc->sc_tpr, 667 "ct%d: uninitialized media\n", 668 unit); 669 if (sc->sc_stat.c_aef & 0x1000) 670 tprintf(sc->sc_tpr, 671 "ct%d: not ready\n", unit); 672 if (sc->sc_stat.c_aef & 0x0800) 673 tprintf(sc->sc_tpr, 674 "ct%d: write protect\n", unit); 675 } else { 676 printf("ct%d err: v%d u%d ru%d bn%d, ", 677 unit, 678 (sc->sc_stat.c_vu>>4)&0xF, 679 sc->sc_stat.c_vu&0xF, 680 sc->sc_stat.c_pend, 681 sc->sc_stat.c_blk); 682 printf("R0x%x F0x%x A0x%x I0x%x\n", 683 sc->sc_stat.c_ref, 684 sc->sc_stat.c_fef, 685 sc->sc_stat.c_aef, 686 sc->sc_stat.c_ief); 687 } 688 } else 689 printf("ct%d: request status failed\n", unit); 690 bp->b_flags |= B_ERROR; 691 bp->b_error = EIO; 692 goto done; 693 } else 694 bp->b_resid = 0; 695 if (sc->sc_flags & CTF_CMD) { 696 switch (sc->sc_cmd) { 697 case MTFSF: 698 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 699 sc->sc_blkno += CTBTOK(sc->sc_resid); 700 ctstart(unit); 701 return; 702 case MTBSF: 703 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 704 break; 705 case MTBSR: 706 sc->sc_flags &= ~CTF_BEOF; 707 if (sc->sc_flags & CTF_EOT) { 708 sc->sc_flags |= CTF_AEOF; 709 sc->sc_flags &= ~CTF_EOT; 710 } else if (sc->sc_flags & CTF_AEOF) { 711 sc->sc_flags |= CTF_BEOF; 712 sc->sc_flags &= ~CTF_AEOF; 713 } 714 break; 715 case MTWEOF: 716 sc->sc_flags &= ~CTF_BEOF; 717 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 718 sc->sc_flags |= CTF_EOT; 719 sc->sc_flags &= ~CTF_AEOF; 720 } else 721 sc->sc_flags |= CTF_AEOF; 722 break; 723 case MTREW: 724 case MTOFFL: 725 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 726 break; 727 } 728 } else { 729 sc->sc_flags &= ~CTF_AEOF; 730 sc->sc_blkno += CTBTOK(sc->sc_resid); 731 } 732 done: 733 #ifdef DEBUG 734 if (ctdebug & CDB_FILES) 735 printf("ctintr: after flags %x\n", sc->sc_flags); 736 #endif 737 if (dp = bp->b_actf) 738 dp->b_actb = bp->b_actb; 739 else 740 cttab[unit].b_actb = bp->b_actb; 741 *bp->b_actb = dp; 742 iodone(bp); 743 hpibfree(&sc->sc_dq); 744 if (cttab[unit].b_actf == NULL) { 745 cttab[unit].b_active = 0; 746 return; 747 } 748 ctustart(unit); 749 } 750 751 ctread(dev, uio) 752 dev_t dev; 753 struct uio *uio; 754 { 755 register int unit = UNIT(dev); 756 757 return(physio(ctstrategy, &ctbuf[unit], dev, B_READ, minphys, uio)); 758 } 759 760 ctwrite(dev, uio) 761 dev_t dev; 762 struct uio *uio; 763 { 764 register int unit = UNIT(dev); 765 766 return(physio(ctstrategy, &ctbuf[unit], dev, B_WRITE, minphys, uio)); 767 } 768 769 /*ARGSUSED*/ 770 ctioctl(dev, cmd, data, flag) 771 dev_t dev; 772 caddr_t data; 773 { 774 register struct mtop *op; 775 register int cnt; 776 777 switch (cmd) { 778 779 case MTIOCTOP: 780 op = (struct mtop *)data; 781 switch(op->mt_op) { 782 783 case MTWEOF: 784 case MTFSF: 785 case MTBSR: 786 case MTBSF: 787 case MTFSR: 788 cnt = op->mt_count; 789 break; 790 791 case MTREW: 792 case MTOFFL: 793 cnt = 1; 794 break; 795 796 default: 797 return(EINVAL); 798 } 799 ctcommand(dev, op->mt_op, cnt); 800 break; 801 802 case MTIOCGET: 803 break; 804 805 default: 806 return(EINVAL); 807 } 808 return(0); 809 } 810 811 /*ARGSUSED*/ 812 ctdump(dev) 813 dev_t dev; 814 { 815 return(ENXIO); 816 } 817 818 ctaddeof(unit) 819 int unit; 820 { 821 register struct ct_softc *sc = &ct_softc[unit]; 822 823 if (sc->sc_eofp == EOFS - 1) 824 sc->sc_eofs[EOFS - 1]++; 825 else { 826 sc->sc_eofp++; 827 if (sc->sc_eofp == EOFS - 1) 828 sc->sc_eofs[EOFS - 1] = EOFS; 829 else 830 /* save blkno */ 831 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 832 } 833 #ifdef DEBUG 834 if (ctdebug & CT_BSF) 835 printf("ct%d: add eof pos %d blk %d\n", 836 unit, sc->sc_eofp, 837 sc->sc_eofs[sc->sc_eofp]); 838 #endif 839 } 840 #endif 841