ct.c revision 1.9
1 /* $NetBSD: ct.c,v 1.9 1994/10/26 07:23:28 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)ct.c 8.2 (Berkeley) 1/12/94 36 */ 37 38 #include "ct.h" 39 #if NCT > 0 40 /* 41 * CS80 cartridge tape driver (9144, 88140, 9145) 42 * 43 * Reminder: 44 * C_CC bit (character count option) when used in the CS/80 command 45 * 'set options' will cause the tape not to stream. 46 * 47 * TODO: 48 * make filesystem compatible 49 * make block mode work according to mtio(4) spec. (if possible) 50 * merge with cs80 disk driver 51 * finish support of 9145 52 */ 53 54 #include <sys/param.h> 55 #include <sys/buf.h> 56 #include <sys/ioctl.h> 57 #include <sys/mtio.h> 58 #include <sys/tprintf.h> 59 #include <sys/proc.h> 60 61 #include <hp300/dev/device.h> 62 #include <hp300/dev/ctreg.h> 63 64 /* number of eof marks to remember */ 65 #define EOFS 128 66 67 int ctinit(), ctstart(), ctgo(), ctintr(); 68 void ctstrategy(); 69 struct driver ctdriver = { 70 ctinit, "ct", ctstart, ctgo, ctintr, 71 }; 72 73 struct ct_softc { 74 struct hp_device *sc_hd; 75 struct ct_iocmd sc_ioc; 76 struct ct_rscmd sc_rsc; 77 struct ct_stat sc_stat; 78 struct ct_ssmcmd sc_ssmc; 79 struct ct_srcmd sc_src; 80 struct ct_soptcmd sc_soptc; 81 struct ct_ulcmd sc_ul; 82 struct ct_wfmcmd sc_wfm; 83 struct ct_clearcmd sc_clear; 84 struct buf *sc_bp; 85 int sc_blkno; 86 int sc_cmd; 87 int sc_resid; 88 char *sc_addr; 89 int sc_flags; 90 short sc_type; 91 short sc_punit; 92 tpr_t sc_tpr; 93 struct devqueue sc_dq; 94 int sc_eofp; 95 int sc_eofs[EOFS]; 96 } ct_softc[NCT]; 97 98 /* flags */ 99 #define CTF_OPEN 0x01 100 #define CTF_ALIVE 0x02 101 #define CTF_WRT 0x04 102 #define CTF_CMD 0x08 103 #define CTF_IO 0x10 104 #define CTF_BEOF 0x20 105 #define CTF_AEOF 0x40 106 #define CTF_EOT 0x80 107 #define CTF_STATWAIT 0x100 108 #define CTF_CANSTREAM 0x200 109 #define CTF_WRTTN 0x400 110 111 struct ctinfo { 112 short hwid; 113 short punit; 114 char *desc; 115 } ctinfo[] = { 116 CT7946ID, 1, "7946A", 117 CT7912PID, 1, "7912P", 118 CT7914PID, 1, "7914P", 119 CT9144ID, 0, "9144", 120 CT9145ID, 0, "9145", 121 }; 122 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 123 124 struct buf cttab[NCT]; 125 struct buf ctbuf[NCT]; 126 127 #define CT_NOREW 4 128 #define CT_STREAM 8 129 #define UNIT(x) (minor(x) & 3) 130 #define ctpunit(x) ((x) & 7) 131 132 #ifdef DEBUG 133 int ctdebug = 0; 134 #define CDB_FILES 0x01 135 #define CT_BSF 0x02 136 #endif 137 138 ctinit(hd) 139 register struct hp_device *hd; 140 { 141 register struct ct_softc *sc = &ct_softc[hd->hp_unit]; 142 register struct buf *bp; 143 144 for (bp = cttab; bp < &cttab[NCT]; bp++) 145 bp->b_actb = &bp->b_actf; 146 sc->sc_hd = hd; 147 sc->sc_punit = ctpunit(hd->hp_flags); 148 if (ctident(sc, hd) < 0) 149 return(0); 150 ctreset(sc, hd); 151 sc->sc_dq.dq_ctlr = hd->hp_ctlr; 152 sc->sc_dq.dq_unit = hd->hp_unit; 153 sc->sc_dq.dq_slave = hd->hp_slave; 154 sc->sc_dq.dq_driver = &ctdriver; 155 sc->sc_flags |= CTF_ALIVE; 156 return(1); 157 } 158 159 ctident(sc, hd) 160 register struct ct_softc *sc; 161 register struct hp_device *hd; 162 { 163 struct ct_describe desc; 164 u_char stat, cmd[3]; 165 char name[7]; 166 int id, i; 167 168 /* 169 * Read device id and verify that: 170 * 1. It is a CS80 device 171 * 2. It is one of our recognized tape devices 172 * 3. It has the proper physical unit number 173 */ 174 id = hpibid(hd->hp_ctlr, hd->hp_slave); 175 if ((id & 0x200) == 0) 176 return(-1); 177 for (i = 0; i < nctinfo; i++) 178 if (id == ctinfo[i].hwid) 179 break; 180 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 181 return(-1); 182 id = i; 183 184 /* 185 * Collect device description. 186 * Right now we only need this to differentiate 7945 from 7946. 187 * Note that we always issue the describe command to unit 0. 188 */ 189 cmd[0] = C_SUNIT(0); 190 cmd[1] = C_SVOL(0); 191 cmd[2] = C_DESC; 192 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 193 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 194 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 195 bzero(name, sizeof(name)); 196 if (!stat) { 197 register int n = desc.d_name; 198 for (i = 5; i >= 0; i--) { 199 name[i] = (n & 0xf) + '0'; 200 n >>= 4; 201 } 202 } 203 switch (ctinfo[id].hwid) { 204 case CT7946ID: 205 if (bcmp(name, "079450", 6) == 0) 206 return(-1); /* not really a 7946 */ 207 /* fall into... */ 208 case CT9144ID: 209 case CT9145ID: 210 sc->sc_type = CT9144; 211 sc->sc_flags |= CTF_CANSTREAM; 212 break; 213 214 case CT7912PID: 215 case CT7914PID: 216 sc->sc_type = CT88140; 217 break; 218 } 219 printf("ct%d: %s %stape\n", hd->hp_unit, ctinfo[id].desc, 220 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 221 return(id); 222 } 223 224 ctreset(sc, hd) 225 register struct ct_softc *sc; 226 register struct hp_device *hd; 227 { 228 u_char stat; 229 230 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 231 sc->sc_clear.cmd = C_CLEAR; 232 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 233 sizeof(sc->sc_clear)); 234 hpibswait(hd->hp_ctlr, hd->hp_slave); 235 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 236 sc->sc_src.unit = C_SUNIT(CTCTLR); 237 sc->sc_src.nop = C_NOP; 238 sc->sc_src.cmd = C_SREL; 239 sc->sc_src.param = C_REL; 240 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 241 sizeof(sc->sc_src)); 242 hpibswait(hd->hp_ctlr, hd->hp_slave); 243 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 244 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 245 sc->sc_ssmc.cmd = C_SSM; 246 sc->sc_ssmc.refm = REF_MASK; 247 sc->sc_ssmc.fefm = FEF_MASK; 248 sc->sc_ssmc.aefm = AEF_MASK; 249 sc->sc_ssmc.iefm = IEF_MASK; 250 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 251 sizeof(sc->sc_ssmc)); 252 hpibswait(hd->hp_ctlr, hd->hp_slave); 253 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 254 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 255 sc->sc_soptc.nop = C_NOP; 256 sc->sc_soptc.cmd = C_SOPT; 257 sc->sc_soptc.opt = C_SPAR; 258 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 259 sizeof(sc->sc_soptc)); 260 hpibswait(hd->hp_ctlr, hd->hp_slave); 261 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 262 } 263 264 /*ARGSUSED*/ 265 ctopen(dev, flag, type, p) 266 dev_t dev; 267 int flag, type; 268 struct proc *p; 269 { 270 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 271 u_char stat; 272 int cc; 273 274 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 275 return(ENXIO); 276 if (sc->sc_flags & CTF_OPEN) 277 return(EBUSY); 278 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 279 sc->sc_soptc.nop = C_NOP; 280 sc->sc_soptc.cmd = C_SOPT; 281 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 282 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 283 else 284 sc->sc_soptc.opt = C_SPAR; 285 /* 286 * Check the return of hpibsend() and hpibswait(). 287 * Drive could be loading/unloading a tape. If not checked, 288 * driver hangs. 289 */ 290 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 291 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 292 if (cc != sizeof(sc->sc_soptc)) 293 return(EBUSY); 294 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 295 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 296 &stat, sizeof(stat)); 297 if (cc != sizeof(stat)) 298 return(EBUSY); 299 sc->sc_tpr = tprintf_open(p); 300 sc->sc_flags |= CTF_OPEN; 301 return(0); 302 } 303 304 /*ARGSUSED*/ 305 ctclose(dev, flag) 306 dev_t dev; 307 int flag; 308 { 309 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 310 311 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 312 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 313 ctcommand(dev, MTWEOF, 2); 314 ctcommand(dev, MTBSR, 1); 315 if (sc->sc_eofp == EOFS - 1) 316 sc->sc_eofs[EOFS - 1]--; 317 else 318 sc->sc_eofp--; 319 #ifdef DEBUG 320 if(ctdebug & CT_BSF) 321 printf("ct%d: ctclose backup eofs prt %d blk %d\n", 322 UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]); 323 #endif 324 } 325 if ((minor(dev) & CT_NOREW) == 0) 326 ctcommand(dev, MTREW, 1); 327 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 328 tprintf_close(sc->sc_tpr); 329 #ifdef DEBUG 330 if (ctdebug & CDB_FILES) 331 printf("ctclose: flags %x\n", sc->sc_flags); 332 #endif 333 return(0); /* XXX */ 334 } 335 336 ctcommand(dev, cmd, cnt) 337 dev_t dev; 338 int cmd; 339 register int cnt; 340 { 341 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 342 register struct buf *bp = &ctbuf[UNIT(dev)]; 343 register struct buf *nbp = 0; 344 345 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 346 cnt = sc->sc_eofs[EOFS - 1] - cnt; 347 ctcommand(dev, MTREW, 1); 348 ctcommand(dev, MTFSF, cnt); 349 cnt = 2; 350 cmd = MTBSR; 351 } 352 353 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 354 cnt = 1; 355 cmd = MTREW; 356 } 357 358 sc->sc_flags |= CTF_CMD; 359 sc->sc_bp = bp; 360 sc->sc_cmd = cmd; 361 bp->b_dev = dev; 362 if (cmd == MTFSF) { 363 nbp = (struct buf *)geteblk(MAXBSIZE); 364 bp->b_un.b_addr = nbp->b_un.b_addr; 365 bp->b_bcount = MAXBSIZE; 366 } 367 again: 368 bp->b_flags = B_BUSY; 369 if (cmd == MTBSF) { 370 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 371 sc->sc_eofp--; 372 #ifdef DEBUG 373 if (ctdebug & CT_BSF) 374 printf("ct%d: backup eof pos %d blk %d\n", 375 UNIT(dev), sc->sc_eofp, 376 sc->sc_eofs[sc->sc_eofp]); 377 #endif 378 } 379 ctstrategy(bp); 380 iowait(bp); 381 if (--cnt > 0) 382 goto again; 383 bp->b_flags = 0; 384 sc->sc_flags &= ~CTF_CMD; 385 if (nbp) 386 brelse(nbp); 387 } 388 389 void 390 ctstrategy(bp) 391 register struct buf *bp; 392 { 393 register struct buf *dp; 394 register int s, unit; 395 396 unit = UNIT(bp->b_dev); 397 dp = &cttab[unit]; 398 bp->b_actf = NULL; 399 s = splbio(); 400 bp->b_actb = dp->b_actb; 401 *dp->b_actb = bp; 402 dp->b_actb = &bp->b_actf; 403 if (dp->b_active == 0) { 404 dp->b_active = 1; 405 ctustart(unit); 406 } 407 splx(s); 408 } 409 410 ctustart(unit) 411 register int unit; 412 { 413 register struct ct_softc *sc = &ct_softc[unit]; 414 register struct buf *bp; 415 416 bp = cttab[unit].b_actf; 417 sc->sc_addr = bp->b_un.b_addr; 418 sc->sc_resid = bp->b_bcount; 419 if (hpibreq(&sc->sc_dq)) 420 ctstart(unit); 421 } 422 423 ctstart(unit) 424 register int unit; 425 { 426 register struct ct_softc *sc = &ct_softc[unit]; 427 register struct buf *bp, *dp; 428 register int i; 429 430 bp = cttab[unit].b_actf; 431 again: 432 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 433 switch(sc->sc_cmd) { 434 435 case MTFSF: 436 bp->b_flags |= B_READ; 437 goto mustio; 438 439 case MTBSF: 440 goto gotaddr; 441 442 case MTOFFL: 443 sc->sc_blkno = 0; 444 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 445 sc->sc_ul.cmd = C_UNLOAD; 446 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 447 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 448 break; 449 450 case MTWEOF: 451 sc->sc_blkno++; 452 sc->sc_flags |= CTF_WRT; 453 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 454 sc->sc_wfm.cmd = C_WFM; 455 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 456 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 457 ctaddeof(unit); 458 break; 459 460 case MTBSR: 461 sc->sc_blkno--; 462 goto gotaddr; 463 464 case MTFSR: 465 sc->sc_blkno++; 466 goto gotaddr; 467 468 case MTREW: 469 sc->sc_blkno = 0; 470 #ifdef DEBUG 471 if(ctdebug & CT_BSF) 472 printf("ct%d: clearing eofs\n", unit); 473 #endif 474 for (i=0; i<EOFS; i++) 475 sc->sc_eofs[i] = 0; 476 sc->sc_eofp = 0; 477 478 gotaddr: 479 sc->sc_ioc.saddr = C_SADDR; 480 sc->sc_ioc.addr0 = 0; 481 sc->sc_ioc.addr = sc->sc_blkno; 482 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 483 sc->sc_ioc.nop2 = C_NOP; 484 sc->sc_ioc.slen = C_SLEN; 485 sc->sc_ioc.len = 0; 486 sc->sc_ioc.nop3 = C_NOP; 487 sc->sc_ioc.cmd = C_READ; 488 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 489 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 490 break; 491 } 492 } 493 else { 494 mustio: 495 if ((bp->b_flags & B_READ) && 496 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 497 #ifdef DEBUG 498 if (ctdebug & CDB_FILES) 499 printf("ctstart: before flags %x\n", sc->sc_flags); 500 #endif 501 if (sc->sc_flags & CTF_BEOF) { 502 sc->sc_flags &= ~CTF_BEOF; 503 sc->sc_flags |= CTF_AEOF; 504 #ifdef DEBUG 505 if (ctdebug & CDB_FILES) 506 printf("ctstart: after flags %x\n", sc->sc_flags); 507 #endif 508 } 509 bp->b_resid = bp->b_bcount; 510 iodone(bp); 511 hpibfree(&sc->sc_dq); 512 if (dp = bp->b_actf) 513 dp->b_actb = bp->b_actb; 514 else 515 cttab[unit].b_actb = bp->b_actb; 516 *bp->b_actb = dp; 517 if ((bp = dp) == NULL) { 518 cttab[unit].b_active = 0; 519 return; 520 } 521 sc->sc_addr = bp->b_un.b_addr; 522 sc->sc_resid = bp->b_bcount; 523 if (hpibreq(&sc->sc_dq)) 524 goto again; 525 return; 526 } 527 sc->sc_flags |= CTF_IO; 528 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 529 sc->sc_ioc.saddr = C_SADDR; 530 sc->sc_ioc.addr0 = 0; 531 sc->sc_ioc.addr = sc->sc_blkno; 532 sc->sc_ioc.nop2 = C_NOP; 533 sc->sc_ioc.slen = C_SLEN; 534 sc->sc_ioc.len = sc->sc_resid; 535 sc->sc_ioc.nop3 = C_NOP; 536 if (bp->b_flags & B_READ) 537 sc->sc_ioc.cmd = C_READ; 538 else { 539 sc->sc_ioc.cmd = C_WRITE; 540 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 541 } 542 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 543 &sc->sc_ioc, sizeof(sc->sc_ioc)); 544 } 545 hpibawait(sc->sc_hd->hp_ctlr); 546 } 547 548 ctgo(unit) 549 register int unit; 550 { 551 register struct ct_softc *sc = &ct_softc[unit]; 552 register struct buf *bp; 553 554 bp = cttab[unit].b_actf; 555 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 556 sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ); 557 } 558 559 /* 560 * Hideous grue to handle EOF/EOT (mostly for reads) 561 */ 562 cteof(sc, bp) 563 register struct ct_softc *sc; 564 register struct buf *bp; 565 { 566 long blks; 567 568 /* 569 * EOT on a write is an error. 570 */ 571 if ((bp->b_flags & B_READ) == 0) { 572 bp->b_resid = bp->b_bcount; 573 bp->b_flags |= B_ERROR; 574 bp->b_error = ENOSPC; 575 sc->sc_flags |= CTF_EOT; 576 return; 577 } 578 /* 579 * Use returned block position to determine how many blocks 580 * we really read and update b_resid. 581 */ 582 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 583 #ifdef DEBUG 584 if (ctdebug & CDB_FILES) 585 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 586 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 587 blks, bp->b_bcount - CTKTOB(blks)); 588 #endif 589 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 590 blks = 0; 591 sc->sc_blkno++; 592 } 593 else { 594 sc->sc_blkno = sc->sc_stat.c_blk; 595 } 596 bp->b_resid = bp->b_bcount - CTKTOB(blks); 597 /* 598 * If we are at physical EOV or were after an EOF, 599 * we are now at logical EOT. 600 */ 601 if ((sc->sc_stat.c_aef & AEF_EOV) || 602 (sc->sc_flags & CTF_AEOF)) { 603 sc->sc_flags |= CTF_EOT; 604 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 605 } 606 /* 607 * If we were before an EOF or we have just completed a FSF, 608 * we are now after EOF. 609 */ 610 else if ((sc->sc_flags & CTF_BEOF) || 611 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 612 sc->sc_flags |= CTF_AEOF; 613 sc->sc_flags &= ~CTF_BEOF; 614 } 615 /* 616 * Otherwise if we read something we are now before EOF 617 * (and no longer after EOF). 618 */ 619 else if (blks) { 620 sc->sc_flags |= CTF_BEOF; 621 sc->sc_flags &= ~CTF_AEOF; 622 } 623 /* 624 * Finally, if we didn't read anything we just passed an EOF 625 */ 626 else 627 sc->sc_flags |= CTF_AEOF; 628 #ifdef DEBUG 629 if (ctdebug & CDB_FILES) 630 printf("cteof: leaving flags %x\n", sc->sc_flags); 631 #endif 632 } 633 634 ctintr(unit) 635 register int unit; 636 { 637 register struct ct_softc *sc = &ct_softc[unit]; 638 register struct buf *bp, *dp; 639 u_char stat; 640 641 bp = cttab[unit].b_actf; 642 if (bp == NULL) { 643 printf("ct%d: bp == NULL\n", unit); 644 return; 645 } 646 if (sc->sc_flags & CTF_IO) { 647 sc->sc_flags &= ~CTF_IO; 648 if (hpibustart(sc->sc_hd->hp_ctlr)) 649 ctgo(unit); 650 return; 651 } 652 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 653 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 654 sc->sc_flags |= CTF_STATWAIT; 655 hpibawait(sc->sc_hd->hp_ctlr); 656 return; 657 } 658 } else 659 sc->sc_flags &= ~CTF_STATWAIT; 660 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 661 #ifdef DEBUG 662 if (ctdebug & CDB_FILES) 663 printf("ctintr: before flags %x\n", sc->sc_flags); 664 #endif 665 if (stat) { 666 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 667 sc->sc_rsc.cmd = C_STATUS; 668 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 669 &sc->sc_rsc, sizeof(sc->sc_rsc)); 670 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 671 &sc->sc_stat, sizeof(sc->sc_stat)); 672 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 673 &stat, 1); 674 #ifdef DEBUG 675 if (ctdebug & CDB_FILES) 676 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 677 stat, sc->sc_stat.c_aef, 678 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 679 #endif 680 if (stat == 0) { 681 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 682 cteof(sc, bp); 683 ctaddeof(unit); 684 goto done; 685 } 686 if (sc->sc_stat.c_fef & FEF_PF) { 687 ctreset(sc, sc->sc_hd); 688 ctstart(unit); 689 return; 690 } 691 if (sc->sc_stat.c_fef & FEF_REXMT) { 692 ctstart(unit); 693 return; 694 } 695 if (sc->sc_stat.c_aef & 0x5800) { 696 if (sc->sc_stat.c_aef & 0x4000) 697 tprintf(sc->sc_tpr, 698 "ct%d: uninitialized media\n", 699 unit); 700 if (sc->sc_stat.c_aef & 0x1000) 701 tprintf(sc->sc_tpr, 702 "ct%d: not ready\n", unit); 703 if (sc->sc_stat.c_aef & 0x0800) 704 tprintf(sc->sc_tpr, 705 "ct%d: write protect\n", unit); 706 } else { 707 printf("ct%d err: v%d u%d ru%d bn%d, ", 708 unit, 709 (sc->sc_stat.c_vu>>4)&0xF, 710 sc->sc_stat.c_vu&0xF, 711 sc->sc_stat.c_pend, 712 sc->sc_stat.c_blk); 713 printf("R0x%x F0x%x A0x%x I0x%x\n", 714 sc->sc_stat.c_ref, 715 sc->sc_stat.c_fef, 716 sc->sc_stat.c_aef, 717 sc->sc_stat.c_ief); 718 } 719 } else 720 printf("ct%d: request status failed\n", unit); 721 bp->b_flags |= B_ERROR; 722 bp->b_error = EIO; 723 goto done; 724 } else 725 bp->b_resid = 0; 726 if (sc->sc_flags & CTF_CMD) { 727 switch (sc->sc_cmd) { 728 case MTFSF: 729 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 730 sc->sc_blkno += CTBTOK(sc->sc_resid); 731 ctstart(unit); 732 return; 733 case MTBSF: 734 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 735 break; 736 case MTBSR: 737 sc->sc_flags &= ~CTF_BEOF; 738 if (sc->sc_flags & CTF_EOT) { 739 sc->sc_flags |= CTF_AEOF; 740 sc->sc_flags &= ~CTF_EOT; 741 } else if (sc->sc_flags & CTF_AEOF) { 742 sc->sc_flags |= CTF_BEOF; 743 sc->sc_flags &= ~CTF_AEOF; 744 } 745 break; 746 case MTWEOF: 747 sc->sc_flags &= ~CTF_BEOF; 748 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 749 sc->sc_flags |= CTF_EOT; 750 sc->sc_flags &= ~CTF_AEOF; 751 } else 752 sc->sc_flags |= CTF_AEOF; 753 break; 754 case MTREW: 755 case MTOFFL: 756 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 757 break; 758 } 759 } else { 760 sc->sc_flags &= ~CTF_AEOF; 761 sc->sc_blkno += CTBTOK(sc->sc_resid); 762 } 763 done: 764 #ifdef DEBUG 765 if (ctdebug & CDB_FILES) 766 printf("ctintr: after flags %x\n", sc->sc_flags); 767 #endif 768 if (dp = bp->b_actf) 769 dp->b_actb = bp->b_actb; 770 else 771 cttab[unit].b_actb = bp->b_actb; 772 *bp->b_actb = dp; 773 iodone(bp); 774 hpibfree(&sc->sc_dq); 775 if (cttab[unit].b_actf == NULL) { 776 cttab[unit].b_active = 0; 777 return; 778 } 779 ctustart(unit); 780 } 781 782 /*ARGSUSED*/ 783 ctioctl(dev, cmd, data, flag, p) 784 dev_t dev; 785 int cmd, flag; 786 caddr_t data; 787 struct proc *p; 788 { 789 register struct mtop *op; 790 register int cnt; 791 792 switch (cmd) { 793 794 case MTIOCTOP: 795 op = (struct mtop *)data; 796 switch(op->mt_op) { 797 798 case MTWEOF: 799 case MTFSF: 800 case MTBSR: 801 case MTBSF: 802 case MTFSR: 803 cnt = op->mt_count; 804 break; 805 806 case MTREW: 807 case MTOFFL: 808 cnt = 1; 809 break; 810 811 default: 812 return(EINVAL); 813 } 814 ctcommand(dev, op->mt_op, cnt); 815 break; 816 817 case MTIOCGET: 818 break; 819 820 default: 821 return(EINVAL); 822 } 823 return(0); 824 } 825 826 /*ARGSUSED*/ 827 ctdump(dev) 828 dev_t dev; 829 { 830 return(ENXIO); 831 } 832 833 ctaddeof(unit) 834 int unit; 835 { 836 register struct ct_softc *sc = &ct_softc[unit]; 837 838 if (sc->sc_eofp == EOFS - 1) 839 sc->sc_eofs[EOFS - 1]++; 840 else { 841 sc->sc_eofp++; 842 if (sc->sc_eofp == EOFS - 1) 843 sc->sc_eofs[EOFS - 1] = EOFS; 844 else 845 /* save blkno */ 846 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 847 } 848 #ifdef DEBUG 849 if (ctdebug & CT_BSF) 850 printf("ct%d: add eof pos %d blk %d\n", 851 unit, sc->sc_eofp, 852 sc->sc_eofs[sc->sc_eofp]); 853 #endif 854 } 855 #endif 856
Indexes created Thu Oct 16 14:10:15 GMT 2025