ct.c revision 1.5
1 /* 2 * Copyright (c) 1982, 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)ct.c 7.3 (Berkeley) 5/4/91 34 * $Id: ct.c,v 1.5 1994/02/06 07:31:06 mycroft Exp $ 35 */ 36 37 #include "ct.h" 38 #if NCT > 0 39 /* 40 * CS80 cartridge tape driver (9144, 88140, 9145) 41 * 42 * Reminder: 43 * C_CC bit (character count option) when used in the CS/80 command 44 * 'set options' will cause the tape not to stream. 45 * 46 * TODO: 47 * make filesystem compatible 48 * make block mode work according to mtio(4) spec. (if possible) 49 * merge with cs80 disk driver 50 * finish support of 9145 51 */ 52 53 #include "param.h" 54 #include "buf.h" 55 #include "ioctl.h" 56 #include "mtio.h" 57 #include "tprintf.h" 58 #include "proc.h" 59 60 #include "ctreg.h" 61 #include "device.h" 62 63 /* number of eof marks to remember */ 64 #define EOFS 128 65 66 int ctinit(), ctstart(), ctgo(), ctintr(); 67 void ctstrategy(); 68 struct driver ctdriver = { 69 ctinit, "ct", ctstart, ctgo, ctintr, 70 }; 71 72 struct ct_softc { 73 struct hp_device *sc_hd; 74 struct ct_iocmd sc_ioc; 75 struct ct_rscmd sc_rsc; 76 struct ct_stat sc_stat; 77 struct ct_ssmcmd sc_ssmc; 78 struct ct_srcmd sc_src; 79 struct ct_soptcmd sc_soptc; 80 struct ct_ulcmd sc_ul; 81 struct ct_wfmcmd sc_wfm; 82 struct ct_clearcmd sc_clear; 83 struct buf *sc_bp; 84 int sc_blkno; 85 int sc_cmd; 86 int sc_resid; 87 char *sc_addr; 88 int sc_flags; 89 short sc_type; 90 short sc_punit; 91 tpr_t sc_tpr; 92 struct devqueue sc_dq; 93 int sc_eofp; 94 int sc_eofs[EOFS]; 95 } ct_softc[NCT]; 96 97 /* flags */ 98 #define CTF_OPEN 0x01 99 #define CTF_ALIVE 0x02 100 #define CTF_WRT 0x04 101 #define CTF_CMD 0x08 102 #define CTF_IO 0x10 103 #define CTF_BEOF 0x20 104 #define CTF_AEOF 0x40 105 #define CTF_EOT 0x80 106 #define CTF_STATWAIT 0x100 107 #define CTF_CANSTREAM 0x200 108 #define CTF_WRTTN 0x400 109 110 struct ctinfo { 111 short hwid; 112 short punit; 113 char *desc; 114 } ctinfo[] = { 115 CT7946ID, 1, "7946A", 116 CT7912PID, 1, "7912P", 117 CT7914PID, 1, "7914P", 118 CT9144ID, 0, "9144", 119 CT9145ID, 0, "9145", 120 }; 121 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 122 123 struct buf cttab[NCT]; 124 struct buf ctbuf[NCT]; 125 126 #define CT_NOREW 4 127 #define CT_STREAM 8 128 #define UNIT(x) (minor(x) & 3) 129 #define ctpunit(x) ((x) & 7) 130 131 #ifdef DEBUG 132 int ctdebug = 0; 133 #define CDB_FILES 0x01 134 #define CT_BSF 0x02 135 #endif 136 137 ctinit(hd) 138 register struct hp_device *hd; 139 { 140 register struct ct_softc *sc = &ct_softc[hd->hp_unit]; 141 register struct buf *bp; 142 143 for (bp = cttab; bp < &cttab[NCT]; bp++) 144 bp->b_actb = &bp->b_actf; 145 sc->sc_hd = hd; 146 sc->sc_punit = ctpunit(hd->hp_flags); 147 if (ctident(sc, hd) < 0) 148 return(0); 149 ctreset(sc, hd); 150 sc->sc_dq.dq_ctlr = hd->hp_ctlr; 151 sc->sc_dq.dq_unit = hd->hp_unit; 152 sc->sc_dq.dq_slave = hd->hp_slave; 153 sc->sc_dq.dq_driver = &ctdriver; 154 sc->sc_flags |= CTF_ALIVE; 155 return(1); 156 } 157 158 ctident(sc, hd) 159 register struct ct_softc *sc; 160 register struct hp_device *hd; 161 { 162 struct ct_describe desc; 163 u_char stat, cmd[3]; 164 char name[7]; 165 int id, i; 166 167 /* 168 * Read device id and verify that: 169 * 1. It is a CS80 device 170 * 2. It is one of our recognized tape devices 171 * 3. It has the proper physical unit number 172 */ 173 id = hpibid(hd->hp_ctlr, hd->hp_slave); 174 if ((id & 0x200) == 0) 175 return(-1); 176 for (i = 0; i < nctinfo; i++) 177 if (id == ctinfo[i].hwid) 178 break; 179 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 180 return(-1); 181 id = i; 182 183 /* 184 * Collect device description. 185 * Right now we only need this to differentiate 7945 from 7946. 186 * Note that we always issue the describe command to unit 0. 187 */ 188 cmd[0] = C_SUNIT(0); 189 cmd[1] = C_SVOL(0); 190 cmd[2] = C_DESC; 191 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 192 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 193 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 194 bzero(name, sizeof(name)); 195 if (!stat) { 196 register int n = desc.d_name; 197 for (i = 5; i >= 0; i--) { 198 name[i] = (n & 0xf) + '0'; 199 n >>= 4; 200 } 201 } 202 switch (ctinfo[id].hwid) { 203 case CT7946ID: 204 if (bcmp(name, "079450", 6) == 0) 205 return(-1); /* not really a 7946 */ 206 /* fall into... */ 207 case CT9144ID: 208 case CT9145ID: 209 sc->sc_type = CT9144; 210 sc->sc_flags |= CTF_CANSTREAM; 211 break; 212 213 case CT7912PID: 214 case CT7914PID: 215 sc->sc_type = CT88140; 216 break; 217 } 218 printf("ct%d: %s %stape\n", hd->hp_unit, ctinfo[id].desc, 219 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 220 return(id); 221 } 222 223 ctreset(sc, hd) 224 register struct ct_softc *sc; 225 register struct hp_device *hd; 226 { 227 u_char stat; 228 229 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 230 sc->sc_clear.cmd = C_CLEAR; 231 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 232 sizeof(sc->sc_clear)); 233 hpibswait(hd->hp_ctlr, hd->hp_slave); 234 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 235 sc->sc_src.unit = C_SUNIT(CTCTLR); 236 sc->sc_src.nop = C_NOP; 237 sc->sc_src.cmd = C_SREL; 238 sc->sc_src.param = C_REL; 239 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 240 sizeof(sc->sc_src)); 241 hpibswait(hd->hp_ctlr, hd->hp_slave); 242 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 243 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 244 sc->sc_ssmc.cmd = C_SSM; 245 sc->sc_ssmc.refm = REF_MASK; 246 sc->sc_ssmc.fefm = FEF_MASK; 247 sc->sc_ssmc.aefm = AEF_MASK; 248 sc->sc_ssmc.iefm = IEF_MASK; 249 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 250 sizeof(sc->sc_ssmc)); 251 hpibswait(hd->hp_ctlr, hd->hp_slave); 252 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 253 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 254 sc->sc_soptc.nop = C_NOP; 255 sc->sc_soptc.cmd = C_SOPT; 256 sc->sc_soptc.opt = C_SPAR; 257 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 258 sizeof(sc->sc_soptc)); 259 hpibswait(hd->hp_ctlr, hd->hp_slave); 260 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 261 } 262 263 /*ARGSUSED*/ 264 ctopen(dev, flag, type, p) 265 dev_t dev; 266 int flag, type; 267 struct proc *p; 268 { 269 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 270 u_char stat; 271 int cc; 272 273 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 274 return(ENXIO); 275 if (sc->sc_flags & CTF_OPEN) 276 return(EBUSY); 277 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 278 sc->sc_soptc.nop = C_NOP; 279 sc->sc_soptc.cmd = C_SOPT; 280 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 281 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 282 else 283 sc->sc_soptc.opt = C_SPAR; 284 /* 285 * Check the return of hpibsend() and hpibswait(). 286 * Drive could be loading/unloading a tape. If not checked, 287 * driver hangs. 288 */ 289 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 290 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 291 if (cc != sizeof(sc->sc_soptc)) 292 return(EBUSY); 293 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 294 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 295 &stat, sizeof(stat)); 296 if (cc != sizeof(stat)) 297 return(EBUSY); 298 sc->sc_tpr = tprintf_open(p); 299 sc->sc_flags |= CTF_OPEN; 300 return(0); 301 } 302 303 /*ARGSUSED*/ 304 ctclose(dev, flag) 305 dev_t dev; 306 { 307 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 308 309 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 310 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 311 ctcommand(dev, MTWEOF, 2); 312 ctcommand(dev, MTBSR, 1); 313 if (sc->sc_eofp == EOFS - 1) 314 sc->sc_eofs[EOFS - 1]--; 315 else 316 sc->sc_eofp--; 317 #ifdef DEBUG 318 if(ctdebug & CT_BSF) 319 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 320 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 321 #endif 322 } 323 if ((minor(dev) & CT_NOREW) == 0) 324 ctcommand(dev, MTREW, 1); 325 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 326 tprintf_close(sc->sc_tpr); 327 #ifdef DEBUG 328 if (ctdebug & CDB_FILES) 329 printf("ctclose: flags %x\n", sc->sc_flags); 330 #endif 331 return(0); /* XXX */ 332 } 333 334 ctcommand(dev, cmd, cnt) 335 dev_t dev; 336 register int cnt; 337 { 338 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 339 register struct buf *bp = &ctbuf[UNIT(dev)]; 340 register struct buf *nbp = 0; 341 342 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 343 cnt = sc->sc_eofs[EOFS - 1] - cnt; 344 ctcommand(dev, MTREW, 1); 345 ctcommand(dev, MTFSF, cnt); 346 cnt = 2; 347 cmd = MTBSR; 348 } 349 350 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 351 cnt = 1; 352 cmd = MTREW; 353 } 354 355 sc->sc_flags |= CTF_CMD; 356 sc->sc_bp = bp; 357 sc->sc_cmd = cmd; 358 bp->b_dev = dev; 359 if (cmd == MTFSF) { 360 nbp = (struct buf *)geteblk(MAXBSIZE); 361 bp->b_un.b_addr = nbp->b_un.b_addr; 362 bp->b_bcount = MAXBSIZE; 363 } 364 again: 365 bp->b_flags = B_BUSY; 366 if (cmd == MTBSF) { 367 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 368 sc->sc_eofp--; 369 #ifdef DEBUG 370 if (ctdebug & CT_BSF) 371 printf("ct%d: backup eof pos %d blk %d\n", 372 UNIT(dev), sc->sc_eofp, 373 sc->sc_eofs[sc->sc_eofp]); 374 #endif 375 } 376 ctstrategy(bp); 377 iowait(bp); 378 if (--cnt > 0) 379 goto again; 380 bp->b_flags = 0; 381 sc->sc_flags &= ~CTF_CMD; 382 if (nbp) 383 brelse(nbp); 384 } 385 386 void 387 ctstrategy(bp) 388 register struct buf *bp; 389 { 390 register struct buf *dp; 391 register int s, unit; 392 393 unit = UNIT(bp->b_dev); 394 dp = &cttab[unit]; 395 bp->b_actf = NULL; 396 s = splbio(); 397 bp->b_actb = dp->b_actb; 398 *dp->b_actb = bp; 399 dp->b_actb = &bp->b_actf; 400 if (dp->b_active == 0) { 401 dp->b_active = 1; 402 ctustart(unit); 403 } 404 splx(s); 405 } 406 407 ctustart(unit) 408 register int unit; 409 { 410 register struct ct_softc *sc = &ct_softc[unit]; 411 register struct buf *bp; 412 413 bp = cttab[unit].b_actf; 414 sc->sc_addr = bp->b_un.b_addr; 415 sc->sc_resid = bp->b_bcount; 416 if (hpibreq(&sc->sc_dq)) 417 ctstart(unit); 418 } 419 420 ctstart(unit) 421 register int unit; 422 { 423 register struct ct_softc *sc = &ct_softc[unit]; 424 register struct buf *bp, *dp; 425 register int i; 426 427 bp = cttab[unit].b_actf; 428 again: 429 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 430 switch(sc->sc_cmd) { 431 432 case MTFSF: 433 bp->b_flags |= B_READ; 434 goto mustio; 435 436 case MTBSF: 437 goto gotaddr; 438 439 case MTOFFL: 440 sc->sc_blkno = 0; 441 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 442 sc->sc_ul.cmd = C_UNLOAD; 443 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 444 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 445 break; 446 447 case MTWEOF: 448 sc->sc_blkno++; 449 sc->sc_flags |= CTF_WRT; 450 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 451 sc->sc_wfm.cmd = C_WFM; 452 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 453 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 454 ctaddeof(unit); 455 break; 456 457 case MTBSR: 458 sc->sc_blkno--; 459 goto gotaddr; 460 461 case MTFSR: 462 sc->sc_blkno++; 463 goto gotaddr; 464 465 case MTREW: 466 sc->sc_blkno = 0; 467 #ifdef DEBUG 468 if(ctdebug & CT_BSF) 469 printf("ct%d: clearing eofs\n", unit); 470 #endif 471 for (i=0; i<EOFS; i++) 472 sc->sc_eofs[i] = 0; 473 sc->sc_eofp = 0; 474 475 gotaddr: 476 sc->sc_ioc.saddr = C_SADDR; 477 sc->sc_ioc.addr0 = 0; 478 sc->sc_ioc.addr = sc->sc_blkno; 479 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 480 sc->sc_ioc.nop2 = C_NOP; 481 sc->sc_ioc.slen = C_SLEN; 482 sc->sc_ioc.len = 0; 483 sc->sc_ioc.nop3 = C_NOP; 484 sc->sc_ioc.cmd = C_READ; 485 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 486 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 487 break; 488 } 489 } 490 else { 491 mustio: 492 if ((bp->b_flags & B_READ) && 493 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 494 #ifdef DEBUG 495 if (ctdebug & CDB_FILES) 496 printf("ctstart: before flags %x\n", sc->sc_flags); 497 #endif 498 if (sc->sc_flags & CTF_BEOF) { 499 sc->sc_flags &= ~CTF_BEOF; 500 sc->sc_flags |= CTF_AEOF; 501 #ifdef DEBUG 502 if (ctdebug & CDB_FILES) 503 printf("ctstart: after flags %x\n", sc->sc_flags); 504 #endif 505 } 506 bp->b_resid = bp->b_bcount; 507 iodone(bp); 508 hpibfree(&sc->sc_dq); 509 if (dp = bp->b_actf) 510 dp->b_actb = bp->b_actb; 511 else 512 cttab[unit].b_actb = bp->b_actb; 513 *bp->b_actb = dp; 514 if ((bp = dp) == NULL) { 515 cttab[unit].b_active = 0; 516 return; 517 } 518 sc->sc_addr = bp->b_un.b_addr; 519 sc->sc_resid = bp->b_bcount; 520 if (hpibreq(&sc->sc_dq)) 521 goto again; 522 return; 523 } 524 sc->sc_flags |= CTF_IO; 525 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 526 sc->sc_ioc.saddr = C_SADDR; 527 sc->sc_ioc.addr0 = 0; 528 sc->sc_ioc.addr = sc->sc_blkno; 529 sc->sc_ioc.nop2 = C_NOP; 530 sc->sc_ioc.slen = C_SLEN; 531 sc->sc_ioc.len = sc->sc_resid; 532 sc->sc_ioc.nop3 = C_NOP; 533 if (bp->b_flags & B_READ) 534 sc->sc_ioc.cmd = C_READ; 535 else { 536 sc->sc_ioc.cmd = C_WRITE; 537 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 538 } 539 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 540 &sc->sc_ioc, sizeof(sc->sc_ioc)); 541 } 542 hpibawait(sc->sc_hd->hp_ctlr); 543 } 544 545 ctgo(unit) 546 register int unit; 547 { 548 register struct ct_softc *sc = &ct_softc[unit]; 549 register struct buf *bp; 550 551 bp = cttab[unit].b_actf; 552 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 553 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 554 } 555 556 /* 557 * Hideous grue to handle EOF/EOT (mostly for reads) 558 */ 559 cteof(sc, bp) 560 register struct ct_softc *sc; 561 register struct buf *bp; 562 { 563 long blks; 564 565 /* 566 * EOT on a write is an error. 567 */ 568 if ((bp->b_flags & B_READ) == 0) { 569 bp->b_resid = bp->b_bcount; 570 bp->b_flags |= B_ERROR; 571 bp->b_error = ENOSPC; 572 sc->sc_flags |= CTF_EOT; 573 return; 574 } 575 /* 576 * Use returned block position to determine how many blocks 577 * we really read and update b_resid. 578 */ 579 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 580 #ifdef DEBUG 581 if (ctdebug & CDB_FILES) 582 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 583 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 584 blks, bp->b_bcount - CTKTOB(blks)); 585 #endif 586 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 587 blks = 0; 588 sc->sc_blkno++; 589 } 590 else { 591 sc->sc_blkno = sc->sc_stat.c_blk; 592 } 593 bp->b_resid = bp->b_bcount - CTKTOB(blks); 594 /* 595 * If we are at physical EOV or were after an EOF, 596 * we are now at logical EOT. 597 */ 598 if ((sc->sc_stat.c_aef & AEF_EOV) || 599 (sc->sc_flags & CTF_AEOF)) { 600 sc->sc_flags |= CTF_EOT; 601 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 602 } 603 /* 604 * If we were before an EOF or we have just completed a FSF, 605 * we are now after EOF. 606 */ 607 else if ((sc->sc_flags & CTF_BEOF) || 608 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 609 sc->sc_flags |= CTF_AEOF; 610 sc->sc_flags &= ~CTF_BEOF; 611 } 612 /* 613 * Otherwise if we read something we are now before EOF 614 * (and no longer after EOF). 615 */ 616 else if (blks) { 617 sc->sc_flags |= CTF_BEOF; 618 sc->sc_flags &= ~CTF_AEOF; 619 } 620 /* 621 * Finally, if we didn't read anything we just passed an EOF 622 */ 623 else 624 sc->sc_flags |= CTF_AEOF; 625 #ifdef DEBUG 626 if (ctdebug & CDB_FILES) 627 printf("cteof: leaving flags %x\n", sc->sc_flags); 628 #endif 629 } 630 631 ctintr(unit) 632 register int unit; 633 { 634 register struct ct_softc *sc = &ct_softc[unit]; 635 register struct buf *bp, *dp; 636 u_char stat; 637 638 bp = cttab[unit].b_actf; 639 if (bp == NULL) { 640 printf("ct%d: bp == NULL\n", unit); 641 return; 642 } 643 if (sc->sc_flags & CTF_IO) { 644 sc->sc_flags &= ~CTF_IO; 645 if (hpibustart(sc->sc_hd->hp_ctlr)) 646 ctgo(unit); 647 return; 648 } 649 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 650 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 651 sc->sc_flags |= CTF_STATWAIT; 652 hpibawait(sc->sc_hd->hp_ctlr); 653 return; 654 } 655 } else 656 sc->sc_flags &= ~CTF_STATWAIT; 657 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 658 #ifdef DEBUG 659 if (ctdebug & CDB_FILES) 660 printf("ctintr: before flags %x\n", sc->sc_flags); 661 #endif 662 if (stat) { 663 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 664 sc->sc_rsc.cmd = C_STATUS; 665 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 666 &sc->sc_rsc, sizeof(sc->sc_rsc)); 667 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 668 &sc->sc_stat, sizeof(sc->sc_stat)); 669 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 670 &stat, 1); 671 #ifdef DEBUG 672 if (ctdebug & CDB_FILES) 673 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 674 stat, sc->sc_stat.c_aef, 675 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 676 #endif 677 if (stat == 0) { 678 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 679 cteof(sc, bp); 680 ctaddeof(unit); 681 goto done; 682 } 683 if (sc->sc_stat.c_fef & FEF_PF) { 684 ctreset(sc, sc->sc_hd); 685 ctstart(unit); 686 return; 687 } 688 if (sc->sc_stat.c_fef & FEF_REXMT) { 689 ctstart(unit); 690 return; 691 } 692 if (sc->sc_stat.c_aef & 0x5800) { 693 if (sc->sc_stat.c_aef & 0x4000) 694 tprintf(sc->sc_tpr, 695 "ct%d: uninitialized media\n", 696 unit); 697 if (sc->sc_stat.c_aef & 0x1000) 698 tprintf(sc->sc_tpr, 699 "ct%d: not ready\n", unit); 700 if (sc->sc_stat.c_aef & 0x0800) 701 tprintf(sc->sc_tpr, 702 "ct%d: write protect\n", unit); 703 } else { 704 printf("ct%d err: v%d u%d ru%d bn%d, ", 705 unit, 706 (sc->sc_stat.c_vu>>4)&0xF, 707 sc->sc_stat.c_vu&0xF, 708 sc->sc_stat.c_pend, 709 sc->sc_stat.c_blk); 710 printf("R0x%x F0x%x A0x%x I0x%x\n", 711 sc->sc_stat.c_ref, 712 sc->sc_stat.c_fef, 713 sc->sc_stat.c_aef, 714 sc->sc_stat.c_ief); 715 } 716 } else 717 printf("ct%d: request status failed\n", unit); 718 bp->b_flags |= B_ERROR; 719 bp->b_error = EIO; 720 goto done; 721 } else 722 bp->b_resid = 0; 723 if (sc->sc_flags & CTF_CMD) { 724 switch (sc->sc_cmd) { 725 case MTFSF: 726 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 727 sc->sc_blkno += CTBTOK(sc->sc_resid); 728 ctstart(unit); 729 return; 730 case MTBSF: 731 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 732 break; 733 case MTBSR: 734 sc->sc_flags &= ~CTF_BEOF; 735 if (sc->sc_flags & CTF_EOT) { 736 sc->sc_flags |= CTF_AEOF; 737 sc->sc_flags &= ~CTF_EOT; 738 } else if (sc->sc_flags & CTF_AEOF) { 739 sc->sc_flags |= CTF_BEOF; 740 sc->sc_flags &= ~CTF_AEOF; 741 } 742 break; 743 case MTWEOF: 744 sc->sc_flags &= ~CTF_BEOF; 745 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 746 sc->sc_flags |= CTF_EOT; 747 sc->sc_flags &= ~CTF_AEOF; 748 } else 749 sc->sc_flags |= CTF_AEOF; 750 break; 751 case MTREW: 752 case MTOFFL: 753 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 754 break; 755 } 756 } else { 757 sc->sc_flags &= ~CTF_AEOF; 758 sc->sc_blkno += CTBTOK(sc->sc_resid); 759 } 760 done: 761 #ifdef DEBUG 762 if (ctdebug & CDB_FILES) 763 printf("ctintr: after flags %x\n", sc->sc_flags); 764 #endif 765 if (dp = bp->b_actf) 766 dp->b_actb = bp->b_actb; 767 else 768 cttab[unit].b_actb = bp->b_actb; 769 *bp->b_actb = dp; 770 iodone(bp); 771 hpibfree(&sc->sc_dq); 772 if (cttab[unit].b_actf == NULL) { 773 cttab[unit].b_active = 0; 774 return; 775 } 776 ctustart(unit); 777 } 778 779 ctread(dev, uio) 780 dev_t dev; 781 struct uio *uio; 782 { 783 register int unit = UNIT(dev); 784 785 return(physio(ctstrategy, &ctbuf[unit], dev, B_READ, minphys, uio)); 786 } 787 788 ctwrite(dev, uio) 789 dev_t dev; 790 struct uio *uio; 791 { 792 register int unit = UNIT(dev); 793 794 return(physio(ctstrategy, &ctbuf[unit], dev, B_WRITE, minphys, uio)); 795 } 796 797 /*ARGSUSED*/ 798 ctioctl(dev, cmd, data, flag) 799 dev_t dev; 800 caddr_t data; 801 { 802 register struct mtop *op; 803 register int cnt; 804 805 switch (cmd) { 806 807 case MTIOCTOP: 808 op = (struct mtop *)data; 809 switch(op->mt_op) { 810 811 case MTWEOF: 812 case MTFSF: 813 case MTBSR: 814 case MTBSF: 815 case MTFSR: 816 cnt = op->mt_count; 817 break; 818 819 case MTREW: 820 case MTOFFL: 821 cnt = 1; 822 break; 823 824 default: 825 return(EINVAL); 826 } 827 ctcommand(dev, op->mt_op, cnt); 828 break; 829 830 case MTIOCGET: 831 break; 832 833 default: 834 return(EINVAL); 835 } 836 return(0); 837 } 838 839 /*ARGSUSED*/ 840 ctdump(dev) 841 dev_t dev; 842 { 843 return(ENXIO); 844 } 845 846 ctaddeof(unit) 847 int unit; 848 { 849 register struct ct_softc *sc = &ct_softc[unit]; 850 851 if (sc->sc_eofp == EOFS - 1) 852 sc->sc_eofs[EOFS - 1]++; 853 else { 854 sc->sc_eofp++; 855 if (sc->sc_eofp == EOFS - 1) 856 sc->sc_eofs[EOFS - 1] = EOFS; 857 else 858 /* save blkno */ 859 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 860 } 861 #ifdef DEBUG 862 if (ctdebug & CT_BSF) 863 printf("ct%d: add eof pos %d blk %d\n", 864 unit, sc->sc_eofp, 865 sc->sc_eofs[sc->sc_eofp]); 866 #endif 867 } 868 #endif 869
Indexes created Tue Sep 23 20:09:58 GMT 2025