ct.c revision 1.17
1 /* $NetBSD: ct.c,v 1.17 1996/10/13 03:14:06 christos 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 ctmatch(), ctstart(), ctgo(), ctintr(); 68 void ctattach(), ctstrategy(), ctdone(); 69 struct driver ctdriver = { 70 ctmatch, ctattach, "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 int 139 ctmatch(hd) 140 register struct hp_device *hd; 141 { 142 register struct ct_softc *sc = &ct_softc[hd->hp_unit]; 143 register struct buf *bp; 144 145 for (bp = cttab; bp < &cttab[NCT]; bp++) 146 bp->b_actb = &bp->b_actf; 147 sc->sc_hd = hd; 148 sc->sc_punit = ctpunit(hd->hp_flags); 149 if (ctident(sc, hd, 0) < 0) 150 return (0); 151 152 return (1); 153 } 154 155 void 156 ctattach(hd) 157 register struct hp_device *hd; 158 { 159 struct ct_softc *sc = &ct_softc[hd->hp_unit]; 160 161 (void)ctident(sc, hd, 1); /* XXX Ick. */ 162 163 ctreset(sc, hd); 164 sc->sc_dq.dq_softc = sc; 165 sc->sc_dq.dq_ctlr = hd->hp_ctlr; 166 sc->sc_dq.dq_unit = hd->hp_unit; 167 sc->sc_dq.dq_slave = hd->hp_slave; 168 sc->sc_dq.dq_driver = &ctdriver; 169 sc->sc_flags |= CTF_ALIVE; 170 } 171 172 int 173 ctident(sc, hd, verbose) 174 register struct ct_softc *sc; 175 register struct hp_device *hd; 176 int verbose; 177 { 178 struct ct_describe desc; 179 u_char stat, cmd[3]; 180 char name[7]; 181 int id, i; 182 183 /* 184 * Read device id and verify that: 185 * 1. It is a CS80 device 186 * 2. It is one of our recognized tape devices 187 * 3. It has the proper physical unit number 188 */ 189 id = hpibid(hd->hp_ctlr, hd->hp_slave); 190 if ((id & 0x200) == 0) 191 return(-1); 192 for (i = 0; i < nctinfo; i++) 193 if (id == ctinfo[i].hwid) 194 break; 195 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 196 return(-1); 197 id = i; 198 199 /* 200 * Collect device description. 201 * Right now we only need this to differentiate 7945 from 7946. 202 * Note that we always issue the describe command to unit 0. 203 */ 204 cmd[0] = C_SUNIT(0); 205 cmd[1] = C_SVOL(0); 206 cmd[2] = C_DESC; 207 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 208 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 209 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 210 bzero(name, sizeof(name)); 211 if (!stat) { 212 register int n = desc.d_name; 213 for (i = 5; i >= 0; i--) { 214 name[i] = (n & 0xf) + '0'; 215 n >>= 4; 216 } 217 } 218 switch (ctinfo[id].hwid) { 219 case CT7946ID: 220 if (bcmp(name, "079450", 6) == 0) 221 return(-1); /* not really a 7946 */ 222 /* fall into... */ 223 case CT9144ID: 224 case CT9145ID: 225 sc->sc_type = CT9144; 226 sc->sc_flags |= CTF_CANSTREAM; 227 break; 228 229 case CT7912PID: 230 case CT7914PID: 231 sc->sc_type = CT88140; 232 break; 233 } 234 if (verbose) 235 printf(": %s %stape\n", ctinfo[id].desc, 236 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 237 return(id); 238 } 239 240 ctreset(sc, hd) 241 register struct ct_softc *sc; 242 register struct hp_device *hd; 243 { 244 u_char stat; 245 246 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 247 sc->sc_clear.cmd = C_CLEAR; 248 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 249 sizeof(sc->sc_clear)); 250 hpibswait(hd->hp_ctlr, hd->hp_slave); 251 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 252 sc->sc_src.unit = C_SUNIT(CTCTLR); 253 sc->sc_src.nop = C_NOP; 254 sc->sc_src.cmd = C_SREL; 255 sc->sc_src.param = C_REL; 256 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 257 sizeof(sc->sc_src)); 258 hpibswait(hd->hp_ctlr, hd->hp_slave); 259 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 260 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 261 sc->sc_ssmc.cmd = C_SSM; 262 sc->sc_ssmc.refm = REF_MASK; 263 sc->sc_ssmc.fefm = FEF_MASK; 264 sc->sc_ssmc.aefm = AEF_MASK; 265 sc->sc_ssmc.iefm = IEF_MASK; 266 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 267 sizeof(sc->sc_ssmc)); 268 hpibswait(hd->hp_ctlr, hd->hp_slave); 269 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 270 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 271 sc->sc_soptc.nop = C_NOP; 272 sc->sc_soptc.cmd = C_SOPT; 273 sc->sc_soptc.opt = C_SPAR; 274 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 275 sizeof(sc->sc_soptc)); 276 hpibswait(hd->hp_ctlr, hd->hp_slave); 277 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 278 } 279 280 /*ARGSUSED*/ 281 ctopen(dev, flag, type, p) 282 dev_t dev; 283 int flag, type; 284 struct proc *p; 285 { 286 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 287 u_char stat; 288 int cc; 289 290 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 291 return(ENXIO); 292 if (sc->sc_flags & CTF_OPEN) 293 return(EBUSY); 294 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 295 sc->sc_soptc.nop = C_NOP; 296 sc->sc_soptc.cmd = C_SOPT; 297 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 298 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 299 else 300 sc->sc_soptc.opt = C_SPAR; 301 /* 302 * Check the return of hpibsend() and hpibswait(). 303 * Drive could be loading/unloading a tape. If not checked, 304 * driver hangs. 305 */ 306 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 307 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 308 if (cc != sizeof(sc->sc_soptc)) 309 return(EBUSY); 310 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 311 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 312 &stat, sizeof(stat)); 313 if (cc != sizeof(stat)) 314 return(EBUSY); 315 sc->sc_tpr = tprintf_open(p); 316 sc->sc_flags |= CTF_OPEN; 317 return(0); 318 } 319 320 /*ARGSUSED*/ 321 ctclose(dev, flag) 322 dev_t dev; 323 int flag; 324 { 325 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 326 327 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 328 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 329 ctcommand(dev, MTWEOF, 2); 330 ctcommand(dev, MTBSR, 1); 331 if (sc->sc_eofp == EOFS - 1) 332 sc->sc_eofs[EOFS - 1]--; 333 else 334 sc->sc_eofp--; 335 #ifdef DEBUG 336 if(ctdebug & CT_BSF) 337 printf("%s: ctclose backup eofs prt %d blk %d\n", 338 sc->sc_hd->hp_xname, sc->sc_eofp, 339 sc->sc_eofs[sc->sc_eofp]); 340 #endif 341 } 342 if ((minor(dev) & CT_NOREW) == 0) 343 ctcommand(dev, MTREW, 1); 344 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 345 tprintf_close(sc->sc_tpr); 346 #ifdef DEBUG 347 if (ctdebug & CDB_FILES) 348 printf("ctclose: flags %x\n", sc->sc_flags); 349 #endif 350 return(0); /* XXX */ 351 } 352 353 ctcommand(dev, cmd, cnt) 354 dev_t dev; 355 int cmd; 356 register int cnt; 357 { 358 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 359 register struct buf *bp = &ctbuf[UNIT(dev)]; 360 register struct buf *nbp = 0; 361 362 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 363 cnt = sc->sc_eofs[EOFS - 1] - cnt; 364 ctcommand(dev, MTREW, 1); 365 ctcommand(dev, MTFSF, cnt); 366 cnt = 2; 367 cmd = MTBSR; 368 } 369 370 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 371 cnt = 1; 372 cmd = MTREW; 373 } 374 375 sc->sc_flags |= CTF_CMD; 376 sc->sc_bp = bp; 377 sc->sc_cmd = cmd; 378 bp->b_dev = dev; 379 if (cmd == MTFSF) { 380 nbp = (struct buf *)geteblk(MAXBSIZE); 381 bp->b_un.b_addr = nbp->b_un.b_addr; 382 bp->b_bcount = MAXBSIZE; 383 } 384 385 while (cnt-- > 0) { 386 bp->b_flags = B_BUSY; 387 if (cmd == MTBSF) { 388 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 389 sc->sc_eofp--; 390 #ifdef DEBUG 391 if (ctdebug & CT_BSF) 392 printf("%s: backup eof pos %d blk %d\n", 393 sc->sc_hd->hp_xname, sc->sc_eofp, 394 sc->sc_eofs[sc->sc_eofp]); 395 #endif 396 } 397 ctstrategy(bp); 398 iowait(bp); 399 } 400 bp->b_flags = 0; 401 sc->sc_flags &= ~CTF_CMD; 402 if (nbp) 403 brelse(nbp); 404 } 405 406 void 407 ctstrategy(bp) 408 register struct buf *bp; 409 { 410 register struct buf *dp; 411 register int s, unit; 412 413 unit = UNIT(bp->b_dev); 414 dp = &cttab[unit]; 415 bp->b_actf = NULL; 416 s = splbio(); 417 bp->b_actb = dp->b_actb; 418 *dp->b_actb = bp; 419 dp->b_actb = &bp->b_actf; 420 if (dp->b_active == 0) { 421 dp->b_active = 1; 422 ctustart(unit); 423 } 424 splx(s); 425 } 426 427 ctustart(unit) 428 register int unit; 429 { 430 register struct ct_softc *sc = &ct_softc[unit]; 431 register struct buf *bp; 432 433 bp = cttab[unit].b_actf; 434 sc->sc_addr = bp->b_un.b_addr; 435 sc->sc_resid = bp->b_bcount; 436 if (hpibreq(&sc->sc_dq)) 437 ctstart(unit); 438 } 439 440 ctstart(unit) 441 register int unit; 442 { 443 register struct ct_softc *sc = &ct_softc[unit]; 444 register struct buf *bp, *dp; 445 register int i; 446 447 bp = cttab[unit].b_actf; 448 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 449 switch(sc->sc_cmd) { 450 451 case MTFSF: 452 bp->b_flags |= B_READ; 453 goto mustio; 454 455 case MTBSF: 456 goto gotaddr; 457 458 case MTOFFL: 459 sc->sc_blkno = 0; 460 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 461 sc->sc_ul.cmd = C_UNLOAD; 462 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 463 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 464 break; 465 466 case MTWEOF: 467 sc->sc_blkno++; 468 sc->sc_flags |= CTF_WRT; 469 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 470 sc->sc_wfm.cmd = C_WFM; 471 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 472 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 473 ctaddeof(unit); 474 break; 475 476 case MTBSR: 477 sc->sc_blkno--; 478 goto gotaddr; 479 480 case MTFSR: 481 sc->sc_blkno++; 482 goto gotaddr; 483 484 case MTREW: 485 sc->sc_blkno = 0; 486 #ifdef DEBUG 487 if(ctdebug & CT_BSF) 488 printf("%s: clearing eofs\n", 489 sc->sc_hd->hp_xname); 490 #endif 491 for (i=0; i<EOFS; i++) 492 sc->sc_eofs[i] = 0; 493 sc->sc_eofp = 0; 494 495 gotaddr: 496 sc->sc_ioc.saddr = C_SADDR; 497 sc->sc_ioc.addr0 = 0; 498 sc->sc_ioc.addr = sc->sc_blkno; 499 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 500 sc->sc_ioc.nop2 = C_NOP; 501 sc->sc_ioc.slen = C_SLEN; 502 sc->sc_ioc.len = 0; 503 sc->sc_ioc.nop3 = C_NOP; 504 sc->sc_ioc.cmd = C_READ; 505 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 506 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 507 break; 508 } 509 } 510 else { 511 mustio: 512 if ((bp->b_flags & B_READ) && 513 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 514 #ifdef DEBUG 515 if (ctdebug & CDB_FILES) 516 printf("ctstart: before flags %x\n", sc->sc_flags); 517 #endif 518 if (sc->sc_flags & CTF_BEOF) { 519 sc->sc_flags &= ~CTF_BEOF; 520 sc->sc_flags |= CTF_AEOF; 521 #ifdef DEBUG 522 if (ctdebug & CDB_FILES) 523 printf("ctstart: after flags %x\n", sc->sc_flags); 524 #endif 525 } 526 bp->b_resid = bp->b_bcount; 527 ctdone(unit, bp); 528 return; 529 } 530 sc->sc_flags |= CTF_IO; 531 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 532 sc->sc_ioc.saddr = C_SADDR; 533 sc->sc_ioc.addr0 = 0; 534 sc->sc_ioc.addr = sc->sc_blkno; 535 sc->sc_ioc.nop2 = C_NOP; 536 sc->sc_ioc.slen = C_SLEN; 537 sc->sc_ioc.len = sc->sc_resid; 538 sc->sc_ioc.nop3 = C_NOP; 539 if (bp->b_flags & B_READ) 540 sc->sc_ioc.cmd = C_READ; 541 else { 542 sc->sc_ioc.cmd = C_WRITE; 543 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 544 } 545 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 546 &sc->sc_ioc, sizeof(sc->sc_ioc)); 547 } 548 hpibawait(sc->sc_hd->hp_ctlr); 549 } 550 551 ctgo(unit) 552 register int unit; 553 { 554 register struct ct_softc *sc = &ct_softc[unit]; 555 register struct buf *bp; 556 int rw; 557 558 bp = cttab[unit].b_actf; 559 rw = bp->b_flags & B_READ; 560 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 561 sc->sc_addr, sc->sc_resid, rw, rw != 0); 562 } 563 564 /* 565 * Hideous grue to handle EOF/EOT (mostly for reads) 566 */ 567 cteof(sc, bp) 568 register struct ct_softc *sc; 569 register struct buf *bp; 570 { 571 long blks; 572 573 /* 574 * EOT on a write is an error. 575 */ 576 if ((bp->b_flags & B_READ) == 0) { 577 bp->b_resid = bp->b_bcount; 578 bp->b_flags |= B_ERROR; 579 bp->b_error = ENOSPC; 580 sc->sc_flags |= CTF_EOT; 581 return; 582 } 583 /* 584 * Use returned block position to determine how many blocks 585 * we really read and update b_resid. 586 */ 587 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 588 #ifdef DEBUG 589 if (ctdebug & CDB_FILES) 590 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 591 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 592 blks, bp->b_bcount - CTKTOB(blks)); 593 #endif 594 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 595 blks = 0; 596 sc->sc_blkno++; 597 } 598 else { 599 sc->sc_blkno = sc->sc_stat.c_blk; 600 } 601 bp->b_resid = bp->b_bcount - CTKTOB(blks); 602 /* 603 * If we are at physical EOV or were after an EOF, 604 * we are now at logical EOT. 605 */ 606 if ((sc->sc_stat.c_aef & AEF_EOV) || 607 (sc->sc_flags & CTF_AEOF)) { 608 sc->sc_flags |= CTF_EOT; 609 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 610 } 611 /* 612 * If we were before an EOF or we have just completed a FSF, 613 * we are now after EOF. 614 */ 615 else if ((sc->sc_flags & CTF_BEOF) || 616 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 617 sc->sc_flags |= CTF_AEOF; 618 sc->sc_flags &= ~CTF_BEOF; 619 } 620 /* 621 * Otherwise if we read something we are now before EOF 622 * (and no longer after EOF). 623 */ 624 else if (blks) { 625 sc->sc_flags |= CTF_BEOF; 626 sc->sc_flags &= ~CTF_AEOF; 627 } 628 /* 629 * Finally, if we didn't read anything we just passed an EOF 630 */ 631 else 632 sc->sc_flags |= CTF_AEOF; 633 #ifdef DEBUG 634 if (ctdebug & CDB_FILES) 635 printf("cteof: leaving flags %x\n", sc->sc_flags); 636 #endif 637 } 638 639 int 640 ctintr(arg) 641 void *arg; 642 { 643 register struct ct_softc *sc = arg; 644 register struct buf *bp, *dp; 645 u_char stat; 646 int unit = sc->sc_hd->hp_unit; 647 648 bp = cttab[unit].b_actf; 649 if (bp == NULL) { 650 printf("%s: bp == NULL\n", sc->sc_hd->hp_xname); 651 return; 652 } 653 if (sc->sc_flags & CTF_IO) { 654 sc->sc_flags &= ~CTF_IO; 655 if (hpibustart(sc->sc_hd->hp_ctlr)) 656 ctgo(unit); 657 return; 658 } 659 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 660 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 661 sc->sc_flags |= CTF_STATWAIT; 662 hpibawait(sc->sc_hd->hp_ctlr); 663 return; 664 } 665 } else 666 sc->sc_flags &= ~CTF_STATWAIT; 667 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 668 #ifdef DEBUG 669 if (ctdebug & CDB_FILES) 670 printf("ctintr: before flags %x\n", sc->sc_flags); 671 #endif 672 if (stat) { 673 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 674 sc->sc_rsc.cmd = C_STATUS; 675 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 676 &sc->sc_rsc, sizeof(sc->sc_rsc)); 677 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 678 &sc->sc_stat, sizeof(sc->sc_stat)); 679 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 680 &stat, 1); 681 #ifdef DEBUG 682 if (ctdebug & CDB_FILES) 683 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 684 stat, sc->sc_stat.c_aef, 685 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 686 #endif 687 if (stat == 0) { 688 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 689 cteof(sc, bp); 690 ctaddeof(unit); 691 goto done; 692 } 693 if (sc->sc_stat.c_fef & FEF_PF) { 694 ctreset(sc, sc->sc_hd); 695 ctstart(unit); 696 return; 697 } 698 if (sc->sc_stat.c_fef & FEF_REXMT) { 699 ctstart(unit); 700 return; 701 } 702 if (sc->sc_stat.c_aef & 0x5800) { 703 if (sc->sc_stat.c_aef & 0x4000) 704 tprintf(sc->sc_tpr, 705 "%s: uninitialized media\n", 706 sc->sc_hd->hp_xname); 707 if (sc->sc_stat.c_aef & 0x1000) 708 tprintf(sc->sc_tpr, 709 "%s: not ready\n", 710 sc->sc_hd->hp_xname); 711 if (sc->sc_stat.c_aef & 0x0800) 712 tprintf(sc->sc_tpr, 713 "%s: write protect\n", 714 sc->sc_hd->hp_xname); 715 } else { 716 printf("%s err: v%d u%d ru%d bn%d, ", 717 sc->sc_hd->hp_xname, 718 (sc->sc_stat.c_vu>>4)&0xF, 719 sc->sc_stat.c_vu&0xF, 720 sc->sc_stat.c_pend, 721 sc->sc_stat.c_blk); 722 printf("R0x%x F0x%x A0x%x I0x%x\n", 723 sc->sc_stat.c_ref, 724 sc->sc_stat.c_fef, 725 sc->sc_stat.c_aef, 726 sc->sc_stat.c_ief); 727 } 728 } else 729 printf("%s: request status failed\n", 730 sc->sc_hd->hp_xname); 731 bp->b_flags |= B_ERROR; 732 bp->b_error = EIO; 733 goto done; 734 } else 735 bp->b_resid = 0; 736 if (sc->sc_flags & CTF_CMD) { 737 switch (sc->sc_cmd) { 738 case MTFSF: 739 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 740 sc->sc_blkno += CTBTOK(sc->sc_resid); 741 ctstart(unit); 742 return; 743 case MTBSF: 744 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 745 break; 746 case MTBSR: 747 sc->sc_flags &= ~CTF_BEOF; 748 if (sc->sc_flags & CTF_EOT) { 749 sc->sc_flags |= CTF_AEOF; 750 sc->sc_flags &= ~CTF_EOT; 751 } else if (sc->sc_flags & CTF_AEOF) { 752 sc->sc_flags |= CTF_BEOF; 753 sc->sc_flags &= ~CTF_AEOF; 754 } 755 break; 756 case MTWEOF: 757 sc->sc_flags &= ~CTF_BEOF; 758 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 759 sc->sc_flags |= CTF_EOT; 760 sc->sc_flags &= ~CTF_AEOF; 761 } else 762 sc->sc_flags |= CTF_AEOF; 763 break; 764 case MTREW: 765 case MTOFFL: 766 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 767 break; 768 } 769 } else { 770 sc->sc_flags &= ~CTF_AEOF; 771 sc->sc_blkno += CTBTOK(sc->sc_resid); 772 } 773 done: 774 #ifdef DEBUG 775 if (ctdebug & CDB_FILES) 776 printf("ctintr: after flags %x\n", sc->sc_flags); 777 #endif 778 ctdone(unit, bp); 779 } 780 781 void 782 ctdone(unit, bp) 783 int unit; 784 register struct buf *bp; 785 { 786 register struct ct_softc *sc = &ct_softc[unit]; 787 register struct buf *dp; 788 789 if (dp = bp->b_actf) 790 dp->b_actb = bp->b_actb; 791 else 792 cttab[unit].b_actb = bp->b_actb; 793 *bp->b_actb = dp; 794 biodone(bp); 795 hpibfree(&sc->sc_dq); 796 if (cttab[unit].b_actf == NULL) { 797 cttab[unit].b_active = 0; 798 return; 799 } 800 ctustart(unit); 801 } 802 803 int 804 ctread(dev, uio, flags) 805 dev_t dev; 806 struct uio *uio; 807 int flags; 808 { 809 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 810 } 811 812 int 813 ctwrite(dev, uio, flags) 814 dev_t dev; 815 struct uio *uio; 816 int flags; 817 { 818 /* XXX: check for hardware write-protect? */ 819 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 820 } 821 822 /*ARGSUSED*/ 823 ctioctl(dev, cmd, data, flag, p) 824 dev_t dev; 825 int cmd, flag; 826 caddr_t data; 827 struct proc *p; 828 { 829 register struct mtop *op; 830 register int cnt; 831 832 switch (cmd) { 833 834 case MTIOCTOP: 835 op = (struct mtop *)data; 836 switch(op->mt_op) { 837 838 case MTWEOF: 839 case MTFSF: 840 case MTBSR: 841 case MTBSF: 842 case MTFSR: 843 cnt = op->mt_count; 844 break; 845 846 case MTREW: 847 case MTOFFL: 848 cnt = 1; 849 break; 850 851 default: 852 return(EINVAL); 853 } 854 ctcommand(dev, op->mt_op, cnt); 855 break; 856 857 case MTIOCGET: 858 break; 859 860 default: 861 return(EINVAL); 862 } 863 return(0); 864 } 865 866 /*ARGSUSED*/ 867 ctdump(dev) 868 dev_t dev; 869 { 870 return(ENXIO); 871 } 872 873 ctaddeof(unit) 874 int unit; 875 { 876 register struct ct_softc *sc = &ct_softc[unit]; 877 878 if (sc->sc_eofp == EOFS - 1) 879 sc->sc_eofs[EOFS - 1]++; 880 else { 881 sc->sc_eofp++; 882 if (sc->sc_eofp == EOFS - 1) 883 sc->sc_eofs[EOFS - 1] = EOFS; 884 else 885 /* save blkno */ 886 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 887 } 888 #ifdef DEBUG 889 if (ctdebug & CT_BSF) 890 printf("%s: add eof pos %d blk %d\n", 891 sc->sc_hd->hp_xname, sc->sc_eofp, 892 sc->sc_eofs[sc->sc_eofp]); 893 #endif 894 } 895 #endif 896
Indexes created Mon Sep 22 13:09:51 GMT 2025