ct.c revision 1.8
1 /* 2 * Copyright (c) 1982, 1990, 1993 3 * The Regents of the University of California. 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 8.2 (Berkeley) 1/12/94 34 * $Id: ct.c,v 1.8 1994/05/23 05:58:26 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 <sys/param.h> 54 #include <sys/buf.h> 55 #include <sys/ioctl.h> 56 #include <sys/mtio.h> 57 #include <sys/tprintf.h> 58 #include <sys/proc.h> 59 60 #include <hp300/dev/device.h> 61 #include <hp300/dev/ctreg.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 int flag; 307 { 308 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 309 310 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 311 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 312 ctcommand(dev, MTWEOF, 2); 313 ctcommand(dev, MTBSR, 1); 314 if (sc->sc_eofp == EOFS - 1) 315 sc->sc_eofs[EOFS - 1]--; 316 else 317 sc->sc_eofp--; 318 #ifdef DEBUG 319 if(ctdebug & CT_BSF) 320 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 321 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 322 #endif 323 } 324 if ((minor(dev) & CT_NOREW) == 0) 325 ctcommand(dev, MTREW, 1); 326 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 327 tprintf_close(sc->sc_tpr); 328 #ifdef DEBUG 329 if (ctdebug & CDB_FILES) 330 printf("ctclose: flags %x\n", sc->sc_flags); 331 #endif 332 return(0); /* XXX */ 333 } 334 335 ctcommand(dev, cmd, cnt) 336 dev_t dev; 337 int cmd; 338 register int cnt; 339 { 340 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 341 register struct buf *bp = &ctbuf[UNIT(dev)]; 342 register struct buf *nbp = 0; 343 344 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 345 cnt = sc->sc_eofs[EOFS - 1] - cnt; 346 ctcommand(dev, MTREW, 1); 347 ctcommand(dev, MTFSF, cnt); 348 cnt = 2; 349 cmd = MTBSR; 350 } 351 352 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 353 cnt = 1; 354 cmd = MTREW; 355 } 356 357 sc->sc_flags |= CTF_CMD; 358 sc->sc_bp = bp; 359 sc->sc_cmd = cmd; 360 bp->b_dev = dev; 361 if (cmd == MTFSF) { 362 nbp = (struct buf *)geteblk(MAXBSIZE); 363 bp->b_un.b_addr = nbp->b_un.b_addr; 364 bp->b_bcount = MAXBSIZE; 365 } 366 again: 367 bp->b_flags = B_BUSY; 368 if (cmd == MTBSF) { 369 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 370 sc->sc_eofp--; 371 #ifdef DEBUG 372 if (ctdebug & CT_BSF) 373 printf("ct%d: backup eof pos %d blk %d\n", 374 UNIT(dev), sc->sc_eofp, 375 sc->sc_eofs[sc->sc_eofp]); 376 #endif 377 } 378 ctstrategy(bp); 379 iowait(bp); 380 if (--cnt > 0) 381 goto again; 382 bp->b_flags = 0; 383 sc->sc_flags &= ~CTF_CMD; 384 if (nbp) 385 brelse(nbp); 386 } 387 388 void 389 ctstrategy(bp) 390 register struct buf *bp; 391 { 392 register struct buf *dp; 393 register int s, unit; 394 395 unit = UNIT(bp->b_dev); 396 dp = &cttab[unit]; 397 bp->b_actf = NULL; 398 s = splbio(); 399 bp->b_actb = dp->b_actb; 400 *dp->b_actb = bp; 401 dp->b_actb = &bp->b_actf; 402 if (dp->b_active == 0) { 403 dp->b_active = 1; 404 ctustart(unit); 405 } 406 splx(s); 407 } 408 409 ctustart(unit) 410 register int unit; 411 { 412 register struct ct_softc *sc = &ct_softc[unit]; 413 register struct buf *bp; 414 415 bp = cttab[unit].b_actf; 416 sc->sc_addr = bp->b_un.b_addr; 417 sc->sc_resid = bp->b_bcount; 418 if (hpibreq(&sc->sc_dq)) 419 ctstart(unit); 420 } 421 422 ctstart(unit) 423 register int unit; 424 { 425 register struct ct_softc *sc = &ct_softc[unit]; 426 register struct buf *bp, *dp; 427 register int i; 428 429 bp = cttab[unit].b_actf; 430 again: 431 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 432 switch(sc->sc_cmd) { 433 434 case MTFSF: 435 bp->b_flags |= B_READ; 436 goto mustio; 437 438 case MTBSF: 439 goto gotaddr; 440 441 case MTOFFL: 442 sc->sc_blkno = 0; 443 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 444 sc->sc_ul.cmd = C_UNLOAD; 445 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 446 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 447 break; 448 449 case MTWEOF: 450 sc->sc_blkno++; 451 sc->sc_flags |= CTF_WRT; 452 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 453 sc->sc_wfm.cmd = C_WFM; 454 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 455 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 456 ctaddeof(unit); 457 break; 458 459 case MTBSR: 460 sc->sc_blkno--; 461 goto gotaddr; 462 463 case MTFSR: 464 sc->sc_blkno++; 465 goto gotaddr; 466 467 case MTREW: 468 sc->sc_blkno = 0; 469 #ifdef DEBUG 470 if(ctdebug & CT_BSF) 471 printf("ct%d: clearing eofs\n", unit); 472 #endif 473 for (i=0; i<EOFS; i++) 474 sc->sc_eofs[i] = 0; 475 sc->sc_eofp = 0; 476 477 gotaddr: 478 sc->sc_ioc.saddr = C_SADDR; 479 sc->sc_ioc.addr0 = 0; 480 sc->sc_ioc.addr = sc->sc_blkno; 481 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 482 sc->sc_ioc.nop2 = C_NOP; 483 sc->sc_ioc.slen = C_SLEN; 484 sc->sc_ioc.len = 0; 485 sc->sc_ioc.nop3 = C_NOP; 486 sc->sc_ioc.cmd = C_READ; 487 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 488 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 489 break; 490 } 491 } 492 else { 493 mustio: 494 if ((bp->b_flags & B_READ) && 495 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 496 #ifdef DEBUG 497 if (ctdebug & CDB_FILES) 498 printf("ctstart: before flags %x\n", sc->sc_flags); 499 #endif 500 if (sc->sc_flags & CTF_BEOF) { 501 sc->sc_flags &= ~CTF_BEOF; 502 sc->sc_flags |= CTF_AEOF; 503 #ifdef DEBUG 504 if (ctdebug & CDB_FILES) 505 printf("ctstart: after flags %x\n", sc->sc_flags); 506 #endif 507 } 508 bp->b_resid = bp->b_bcount; 509 iodone(bp); 510 hpibfree(&sc->sc_dq); 511 if (dp = bp->b_actf) 512 dp->b_actb = bp->b_actb; 513 else 514 cttab[unit].b_actb = bp->b_actb; 515 *bp->b_actb = dp; 516 if ((bp = dp) == NULL) { 517 cttab[unit].b_active = 0; 518 return; 519 } 520 sc->sc_addr = bp->b_un.b_addr; 521 sc->sc_resid = bp->b_bcount; 522 if (hpibreq(&sc->sc_dq)) 523 goto again; 524 return; 525 } 526 sc->sc_flags |= CTF_IO; 527 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 528 sc->sc_ioc.saddr = C_SADDR; 529 sc->sc_ioc.addr0 = 0; 530 sc->sc_ioc.addr = sc->sc_blkno; 531 sc->sc_ioc.nop2 = C_NOP; 532 sc->sc_ioc.slen = C_SLEN; 533 sc->sc_ioc.len = sc->sc_resid; 534 sc->sc_ioc.nop3 = C_NOP; 535 if (bp->b_flags & B_READ) 536 sc->sc_ioc.cmd = C_READ; 537 else { 538 sc->sc_ioc.cmd = C_WRITE; 539 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 540 } 541 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 542 &sc->sc_ioc, sizeof(sc->sc_ioc)); 543 } 544 hpibawait(sc->sc_hd->hp_ctlr); 545 } 546 547 ctgo(unit) 548 register int unit; 549 { 550 register struct ct_softc *sc = &ct_softc[unit]; 551 register struct buf *bp; 552 553 bp = cttab[unit].b_actf; 554 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 555 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 556 } 557 558 /* 559 * Hideous grue to handle EOF/EOT (mostly for reads) 560 */ 561 cteof(sc, bp) 562 register struct ct_softc *sc; 563 register struct buf *bp; 564 { 565 long blks; 566 567 /* 568 * EOT on a write is an error. 569 */ 570 if ((bp->b_flags & B_READ) == 0) { 571 bp->b_resid = bp->b_bcount; 572 bp->b_flags |= B_ERROR; 573 bp->b_error = ENOSPC; 574 sc->sc_flags |= CTF_EOT; 575 return; 576 } 577 /* 578 * Use returned block position to determine how many blocks 579 * we really read and update b_resid. 580 */ 581 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 582 #ifdef DEBUG 583 if (ctdebug & CDB_FILES) 584 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 585 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 586 blks, bp->b_bcount - CTKTOB(blks)); 587 #endif 588 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 589 blks = 0; 590 sc->sc_blkno++; 591 } 592 else { 593 sc->sc_blkno = sc->sc_stat.c_blk; 594 } 595 bp->b_resid = bp->b_bcount - CTKTOB(blks); 596 /* 597 * If we are at physical EOV or were after an EOF, 598 * we are now at logical EOT. 599 */ 600 if ((sc->sc_stat.c_aef & AEF_EOV) || 601 (sc->sc_flags & CTF_AEOF)) { 602 sc->sc_flags |= CTF_EOT; 603 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 604 } 605 /* 606 * If we were before an EOF or we have just completed a FSF, 607 * we are now after EOF. 608 */ 609 else if ((sc->sc_flags & CTF_BEOF) || 610 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 611 sc->sc_flags |= CTF_AEOF; 612 sc->sc_flags &= ~CTF_BEOF; 613 } 614 /* 615 * Otherwise if we read something we are now before EOF 616 * (and no longer after EOF). 617 */ 618 else if (blks) { 619 sc->sc_flags |= CTF_BEOF; 620 sc->sc_flags &= ~CTF_AEOF; 621 } 622 /* 623 * Finally, if we didn't read anything we just passed an EOF 624 */ 625 else 626 sc->sc_flags |= CTF_AEOF; 627 #ifdef DEBUG 628 if (ctdebug & CDB_FILES) 629 printf("cteof: leaving flags %x\n", sc->sc_flags); 630 #endif 631 } 632 633 ctintr(unit) 634 register int unit; 635 { 636 register struct ct_softc *sc = &ct_softc[unit]; 637 register struct buf *bp, *dp; 638 u_char stat; 639 640 bp = cttab[unit].b_actf; 641 if (bp == NULL) { 642 printf("ct%d: bp == NULL\n", unit); 643 return; 644 } 645 if (sc->sc_flags & CTF_IO) { 646 sc->sc_flags &= ~CTF_IO; 647 if (hpibustart(sc->sc_hd->hp_ctlr)) 648 ctgo(unit); 649 return; 650 } 651 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 652 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 653 sc->sc_flags |= CTF_STATWAIT; 654 hpibawait(sc->sc_hd->hp_ctlr); 655 return; 656 } 657 } else 658 sc->sc_flags &= ~CTF_STATWAIT; 659 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 660 #ifdef DEBUG 661 if (ctdebug & CDB_FILES) 662 printf("ctintr: before flags %x\n", sc->sc_flags); 663 #endif 664 if (stat) { 665 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 666 sc->sc_rsc.cmd = C_STATUS; 667 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 668 &sc->sc_rsc, sizeof(sc->sc_rsc)); 669 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 670 &sc->sc_stat, sizeof(sc->sc_stat)); 671 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 672 &stat, 1); 673 #ifdef DEBUG 674 if (ctdebug & CDB_FILES) 675 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 676 stat, sc->sc_stat.c_aef, 677 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 678 #endif 679 if (stat == 0) { 680 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 681 cteof(sc, bp); 682 ctaddeof(unit); 683 goto done; 684 } 685 if (sc->sc_stat.c_fef & FEF_PF) { 686 ctreset(sc, sc->sc_hd); 687 ctstart(unit); 688 return; 689 } 690 if (sc->sc_stat.c_fef & FEF_REXMT) { 691 ctstart(unit); 692 return; 693 } 694 if (sc->sc_stat.c_aef & 0x5800) { 695 if (sc->sc_stat.c_aef & 0x4000) 696 tprintf(sc->sc_tpr, 697 "ct%d: uninitialized media\n", 698 unit); 699 if (sc->sc_stat.c_aef & 0x1000) 700 tprintf(sc->sc_tpr, 701 "ct%d: not ready\n", unit); 702 if (sc->sc_stat.c_aef & 0x0800) 703 tprintf(sc->sc_tpr, 704 "ct%d: write protect\n", unit); 705 } else { 706 printf("ct%d err: v%d u%d ru%d bn%d, ", 707 unit, 708 (sc->sc_stat.c_vu>>4)&0xF, 709 sc->sc_stat.c_vu&0xF, 710 sc->sc_stat.c_pend, 711 sc->sc_stat.c_blk); 712 printf("R0x%x F0x%x A0x%x I0x%x\n", 713 sc->sc_stat.c_ref, 714 sc->sc_stat.c_fef, 715 sc->sc_stat.c_aef, 716 sc->sc_stat.c_ief); 717 } 718 } else 719 printf("ct%d: request status failed\n", unit); 720 bp->b_flags |= B_ERROR; 721 bp->b_error = EIO; 722 goto done; 723 } else 724 bp->b_resid = 0; 725 if (sc->sc_flags & CTF_CMD) { 726 switch (sc->sc_cmd) { 727 case MTFSF: 728 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 729 sc->sc_blkno += CTBTOK(sc->sc_resid); 730 ctstart(unit); 731 return; 732 case MTBSF: 733 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 734 break; 735 case MTBSR: 736 sc->sc_flags &= ~CTF_BEOF; 737 if (sc->sc_flags & CTF_EOT) { 738 sc->sc_flags |= CTF_AEOF; 739 sc->sc_flags &= ~CTF_EOT; 740 } else if (sc->sc_flags & CTF_AEOF) { 741 sc->sc_flags |= CTF_BEOF; 742 sc->sc_flags &= ~CTF_AEOF; 743 } 744 break; 745 case MTWEOF: 746 sc->sc_flags &= ~CTF_BEOF; 747 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 748 sc->sc_flags |= CTF_EOT; 749 sc->sc_flags &= ~CTF_AEOF; 750 } else 751 sc->sc_flags |= CTF_AEOF; 752 break; 753 case MTREW: 754 case MTOFFL: 755 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 756 break; 757 } 758 } else { 759 sc->sc_flags &= ~CTF_AEOF; 760 sc->sc_blkno += CTBTOK(sc->sc_resid); 761 } 762 done: 763 #ifdef DEBUG 764 if (ctdebug & CDB_FILES) 765 printf("ctintr: after flags %x\n", sc->sc_flags); 766 #endif 767 if (dp = bp->b_actf) 768 dp->b_actb = bp->b_actb; 769 else 770 cttab[unit].b_actb = bp->b_actb; 771 *bp->b_actb = dp; 772 iodone(bp); 773 hpibfree(&sc->sc_dq); 774 if (cttab[unit].b_actf == NULL) { 775 cttab[unit].b_active = 0; 776 return; 777 } 778 ctustart(unit); 779 } 780 781 /*ARGSUSED*/ 782 ctioctl(dev, cmd, data, flag, p) 783 dev_t dev; 784 int cmd, flag; 785 caddr_t data; 786 struct proc *p; 787 { 788 register struct mtop *op; 789 register int cnt; 790 791 switch (cmd) { 792 793 case MTIOCTOP: 794 op = (struct mtop *)data; 795 switch(op->mt_op) { 796 797 case MTWEOF: 798 case MTFSF: 799 case MTBSR: 800 case MTBSF: 801 case MTFSR: 802 cnt = op->mt_count; 803 break; 804 805 case MTREW: 806 case MTOFFL: 807 cnt = 1; 808 break; 809 810 default: 811 return(EINVAL); 812 } 813 ctcommand(dev, op->mt_op, cnt); 814 break; 815 816 case MTIOCGET: 817 break; 818 819 default: 820 return(EINVAL); 821 } 822 return(0); 823 } 824 825 /*ARGSUSED*/ 826 ctdump(dev) 827 dev_t dev; 828 { 829 return(ENXIO); 830 } 831 832 ctaddeof(unit) 833 int unit; 834 { 835 register struct ct_softc *sc = &ct_softc[unit]; 836 837 if (sc->sc_eofp == EOFS - 1) 838 sc->sc_eofs[EOFS - 1]++; 839 else { 840 sc->sc_eofp++; 841 if (sc->sc_eofp == EOFS - 1) 842 sc->sc_eofs[EOFS - 1] = EOFS; 843 else 844 /* save blkno */ 845 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 846 } 847 #ifdef DEBUG 848 if (ctdebug & CT_BSF) 849 printf("ct%d: add eof pos %d blk %d\n", 850 unit, sc->sc_eofp, 851 sc->sc_eofs[sc->sc_eofp]); 852 #endif 853 } 854 #endif 855
Indexes created Wed Sep 24 15:09:51 GMT 2025