ct.c revision 1.18
1 /* $NetBSD: ct.c,v 1.18 1996/10/14 07:14:11 thorpej 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 /* XXX Set device class. */ 172 hd->hp_dev.dv_class = DV_TAPE; 173 } 174 175 int 176 ctident(sc, hd, verbose) 177 register struct ct_softc *sc; 178 register struct hp_device *hd; 179 int verbose; 180 { 181 struct ct_describe desc; 182 u_char stat, cmd[3]; 183 char name[7]; 184 int id, i; 185 186 /* 187 * Read device id and verify that: 188 * 1. It is a CS80 device 189 * 2. It is one of our recognized tape devices 190 * 3. It has the proper physical unit number 191 */ 192 id = hpibid(hd->hp_ctlr, hd->hp_slave); 193 if ((id & 0x200) == 0) 194 return(-1); 195 for (i = 0; i < nctinfo; i++) 196 if (id == ctinfo[i].hwid) 197 break; 198 if (i == nctinfo || sc->sc_punit != ctinfo[i].punit) 199 return(-1); 200 id = i; 201 202 /* 203 * Collect device description. 204 * Right now we only need this to differentiate 7945 from 7946. 205 * Note that we always issue the describe command to unit 0. 206 */ 207 cmd[0] = C_SUNIT(0); 208 cmd[1] = C_SVOL(0); 209 cmd[2] = C_DESC; 210 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd)); 211 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37); 212 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 213 bzero(name, sizeof(name)); 214 if (!stat) { 215 register int n = desc.d_name; 216 for (i = 5; i >= 0; i--) { 217 name[i] = (n & 0xf) + '0'; 218 n >>= 4; 219 } 220 } 221 switch (ctinfo[id].hwid) { 222 case CT7946ID: 223 if (bcmp(name, "079450", 6) == 0) 224 return(-1); /* not really a 7946 */ 225 /* fall into... */ 226 case CT9144ID: 227 case CT9145ID: 228 sc->sc_type = CT9144; 229 sc->sc_flags |= CTF_CANSTREAM; 230 break; 231 232 case CT7912PID: 233 case CT7914PID: 234 sc->sc_type = CT88140; 235 break; 236 } 237 if (verbose) 238 printf(": %s %stape\n", ctinfo[id].desc, 239 (sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " "); 240 return(id); 241 } 242 243 ctreset(sc, hd) 244 register struct ct_softc *sc; 245 register struct hp_device *hd; 246 { 247 u_char stat; 248 249 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 250 sc->sc_clear.cmd = C_CLEAR; 251 hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear, 252 sizeof(sc->sc_clear)); 253 hpibswait(hd->hp_ctlr, hd->hp_slave); 254 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 255 sc->sc_src.unit = C_SUNIT(CTCTLR); 256 sc->sc_src.nop = C_NOP; 257 sc->sc_src.cmd = C_SREL; 258 sc->sc_src.param = C_REL; 259 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src, 260 sizeof(sc->sc_src)); 261 hpibswait(hd->hp_ctlr, hd->hp_slave); 262 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 263 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 264 sc->sc_ssmc.cmd = C_SSM; 265 sc->sc_ssmc.refm = REF_MASK; 266 sc->sc_ssmc.fefm = FEF_MASK; 267 sc->sc_ssmc.aefm = AEF_MASK; 268 sc->sc_ssmc.iefm = IEF_MASK; 269 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc, 270 sizeof(sc->sc_ssmc)); 271 hpibswait(hd->hp_ctlr, hd->hp_slave); 272 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 273 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 274 sc->sc_soptc.nop = C_NOP; 275 sc->sc_soptc.cmd = C_SOPT; 276 sc->sc_soptc.opt = C_SPAR; 277 hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc, 278 sizeof(sc->sc_soptc)); 279 hpibswait(hd->hp_ctlr, hd->hp_slave); 280 hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat)); 281 } 282 283 /*ARGSUSED*/ 284 ctopen(dev, flag, type, p) 285 dev_t dev; 286 int flag, type; 287 struct proc *p; 288 { 289 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 290 u_char stat; 291 int cc; 292 293 if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0) 294 return(ENXIO); 295 if (sc->sc_flags & CTF_OPEN) 296 return(EBUSY); 297 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 298 sc->sc_soptc.nop = C_NOP; 299 sc->sc_soptc.cmd = C_SOPT; 300 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 301 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 302 else 303 sc->sc_soptc.opt = C_SPAR; 304 /* 305 * Check the return of hpibsend() and hpibswait(). 306 * Drive could be loading/unloading a tape. If not checked, 307 * driver hangs. 308 */ 309 cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 310 C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 311 if (cc != sizeof(sc->sc_soptc)) 312 return(EBUSY); 313 hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave); 314 cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 315 &stat, sizeof(stat)); 316 if (cc != sizeof(stat)) 317 return(EBUSY); 318 sc->sc_tpr = tprintf_open(p); 319 sc->sc_flags |= CTF_OPEN; 320 return(0); 321 } 322 323 /*ARGSUSED*/ 324 ctclose(dev, flag) 325 dev_t dev; 326 int flag; 327 { 328 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 329 330 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 331 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 332 ctcommand(dev, MTWEOF, 2); 333 ctcommand(dev, MTBSR, 1); 334 if (sc->sc_eofp == EOFS - 1) 335 sc->sc_eofs[EOFS - 1]--; 336 else 337 sc->sc_eofp--; 338 #ifdef DEBUG 339 if(ctdebug & CT_BSF) 340 printf("%s: ctclose backup eofs prt %d blk %d\n", 341 sc->sc_hd->hp_xname, sc->sc_eofp, 342 sc->sc_eofs[sc->sc_eofp]); 343 #endif 344 } 345 if ((minor(dev) & CT_NOREW) == 0) 346 ctcommand(dev, MTREW, 1); 347 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 348 tprintf_close(sc->sc_tpr); 349 #ifdef DEBUG 350 if (ctdebug & CDB_FILES) 351 printf("ctclose: flags %x\n", sc->sc_flags); 352 #endif 353 return(0); /* XXX */ 354 } 355 356 ctcommand(dev, cmd, cnt) 357 dev_t dev; 358 int cmd; 359 register int cnt; 360 { 361 register struct ct_softc *sc = &ct_softc[UNIT(dev)]; 362 register struct buf *bp = &ctbuf[UNIT(dev)]; 363 register struct buf *nbp = 0; 364 365 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 366 cnt = sc->sc_eofs[EOFS - 1] - cnt; 367 ctcommand(dev, MTREW, 1); 368 ctcommand(dev, MTFSF, cnt); 369 cnt = 2; 370 cmd = MTBSR; 371 } 372 373 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 374 cnt = 1; 375 cmd = MTREW; 376 } 377 378 sc->sc_flags |= CTF_CMD; 379 sc->sc_bp = bp; 380 sc->sc_cmd = cmd; 381 bp->b_dev = dev; 382 if (cmd == MTFSF) { 383 nbp = (struct buf *)geteblk(MAXBSIZE); 384 bp->b_un.b_addr = nbp->b_un.b_addr; 385 bp->b_bcount = MAXBSIZE; 386 } 387 388 while (cnt-- > 0) { 389 bp->b_flags = B_BUSY; 390 if (cmd == MTBSF) { 391 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 392 sc->sc_eofp--; 393 #ifdef DEBUG 394 if (ctdebug & CT_BSF) 395 printf("%s: backup eof pos %d blk %d\n", 396 sc->sc_hd->hp_xname, sc->sc_eofp, 397 sc->sc_eofs[sc->sc_eofp]); 398 #endif 399 } 400 ctstrategy(bp); 401 iowait(bp); 402 } 403 bp->b_flags = 0; 404 sc->sc_flags &= ~CTF_CMD; 405 if (nbp) 406 brelse(nbp); 407 } 408 409 void 410 ctstrategy(bp) 411 register struct buf *bp; 412 { 413 register struct buf *dp; 414 register int s, unit; 415 416 unit = UNIT(bp->b_dev); 417 dp = &cttab[unit]; 418 bp->b_actf = NULL; 419 s = splbio(); 420 bp->b_actb = dp->b_actb; 421 *dp->b_actb = bp; 422 dp->b_actb = &bp->b_actf; 423 if (dp->b_active == 0) { 424 dp->b_active = 1; 425 ctustart(unit); 426 } 427 splx(s); 428 } 429 430 ctustart(unit) 431 register int unit; 432 { 433 register struct ct_softc *sc = &ct_softc[unit]; 434 register struct buf *bp; 435 436 bp = cttab[unit].b_actf; 437 sc->sc_addr = bp->b_un.b_addr; 438 sc->sc_resid = bp->b_bcount; 439 if (hpibreq(&sc->sc_dq)) 440 ctstart(unit); 441 } 442 443 ctstart(unit) 444 register int unit; 445 { 446 register struct ct_softc *sc = &ct_softc[unit]; 447 register struct buf *bp, *dp; 448 register int i; 449 450 bp = cttab[unit].b_actf; 451 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 452 switch(sc->sc_cmd) { 453 454 case MTFSF: 455 bp->b_flags |= B_READ; 456 goto mustio; 457 458 case MTBSF: 459 goto gotaddr; 460 461 case MTOFFL: 462 sc->sc_blkno = 0; 463 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 464 sc->sc_ul.cmd = C_UNLOAD; 465 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 466 C_CMD, &sc->sc_ul, sizeof(sc->sc_ul)); 467 break; 468 469 case MTWEOF: 470 sc->sc_blkno++; 471 sc->sc_flags |= CTF_WRT; 472 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 473 sc->sc_wfm.cmd = C_WFM; 474 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 475 C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm)); 476 ctaddeof(unit); 477 break; 478 479 case MTBSR: 480 sc->sc_blkno--; 481 goto gotaddr; 482 483 case MTFSR: 484 sc->sc_blkno++; 485 goto gotaddr; 486 487 case MTREW: 488 sc->sc_blkno = 0; 489 #ifdef DEBUG 490 if(ctdebug & CT_BSF) 491 printf("%s: clearing eofs\n", 492 sc->sc_hd->hp_xname); 493 #endif 494 for (i=0; i<EOFS; i++) 495 sc->sc_eofs[i] = 0; 496 sc->sc_eofp = 0; 497 498 gotaddr: 499 sc->sc_ioc.saddr = C_SADDR; 500 sc->sc_ioc.addr0 = 0; 501 sc->sc_ioc.addr = sc->sc_blkno; 502 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 503 sc->sc_ioc.nop2 = C_NOP; 504 sc->sc_ioc.slen = C_SLEN; 505 sc->sc_ioc.len = 0; 506 sc->sc_ioc.nop3 = C_NOP; 507 sc->sc_ioc.cmd = C_READ; 508 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, 509 C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 510 break; 511 } 512 } 513 else { 514 mustio: 515 if ((bp->b_flags & B_READ) && 516 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 517 #ifdef DEBUG 518 if (ctdebug & CDB_FILES) 519 printf("ctstart: before flags %x\n", sc->sc_flags); 520 #endif 521 if (sc->sc_flags & CTF_BEOF) { 522 sc->sc_flags &= ~CTF_BEOF; 523 sc->sc_flags |= CTF_AEOF; 524 #ifdef DEBUG 525 if (ctdebug & CDB_FILES) 526 printf("ctstart: after flags %x\n", sc->sc_flags); 527 #endif 528 } 529 bp->b_resid = bp->b_bcount; 530 ctdone(unit, bp); 531 return; 532 } 533 sc->sc_flags |= CTF_IO; 534 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 535 sc->sc_ioc.saddr = C_SADDR; 536 sc->sc_ioc.addr0 = 0; 537 sc->sc_ioc.addr = sc->sc_blkno; 538 sc->sc_ioc.nop2 = C_NOP; 539 sc->sc_ioc.slen = C_SLEN; 540 sc->sc_ioc.len = sc->sc_resid; 541 sc->sc_ioc.nop3 = C_NOP; 542 if (bp->b_flags & B_READ) 543 sc->sc_ioc.cmd = C_READ; 544 else { 545 sc->sc_ioc.cmd = C_WRITE; 546 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 547 } 548 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 549 &sc->sc_ioc, sizeof(sc->sc_ioc)); 550 } 551 hpibawait(sc->sc_hd->hp_ctlr); 552 } 553 554 ctgo(unit) 555 register int unit; 556 { 557 register struct ct_softc *sc = &ct_softc[unit]; 558 register struct buf *bp; 559 int rw; 560 561 bp = cttab[unit].b_actf; 562 rw = bp->b_flags & B_READ; 563 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 564 sc->sc_addr, sc->sc_resid, rw, rw != 0); 565 } 566 567 /* 568 * Hideous grue to handle EOF/EOT (mostly for reads) 569 */ 570 cteof(sc, bp) 571 register struct ct_softc *sc; 572 register struct buf *bp; 573 { 574 long blks; 575 576 /* 577 * EOT on a write is an error. 578 */ 579 if ((bp->b_flags & B_READ) == 0) { 580 bp->b_resid = bp->b_bcount; 581 bp->b_flags |= B_ERROR; 582 bp->b_error = ENOSPC; 583 sc->sc_flags |= CTF_EOT; 584 return; 585 } 586 /* 587 * Use returned block position to determine how many blocks 588 * we really read and update b_resid. 589 */ 590 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 591 #ifdef DEBUG 592 if (ctdebug & CDB_FILES) 593 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 594 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 595 blks, bp->b_bcount - CTKTOB(blks)); 596 #endif 597 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 598 blks = 0; 599 sc->sc_blkno++; 600 } 601 else { 602 sc->sc_blkno = sc->sc_stat.c_blk; 603 } 604 bp->b_resid = bp->b_bcount - CTKTOB(blks); 605 /* 606 * If we are at physical EOV or were after an EOF, 607 * we are now at logical EOT. 608 */ 609 if ((sc->sc_stat.c_aef & AEF_EOV) || 610 (sc->sc_flags & CTF_AEOF)) { 611 sc->sc_flags |= CTF_EOT; 612 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 613 } 614 /* 615 * If we were before an EOF or we have just completed a FSF, 616 * we are now after EOF. 617 */ 618 else if ((sc->sc_flags & CTF_BEOF) || 619 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 620 sc->sc_flags |= CTF_AEOF; 621 sc->sc_flags &= ~CTF_BEOF; 622 } 623 /* 624 * Otherwise if we read something we are now before EOF 625 * (and no longer after EOF). 626 */ 627 else if (blks) { 628 sc->sc_flags |= CTF_BEOF; 629 sc->sc_flags &= ~CTF_AEOF; 630 } 631 /* 632 * Finally, if we didn't read anything we just passed an EOF 633 */ 634 else 635 sc->sc_flags |= CTF_AEOF; 636 #ifdef DEBUG 637 if (ctdebug & CDB_FILES) 638 printf("cteof: leaving flags %x\n", sc->sc_flags); 639 #endif 640 } 641 642 int 643 ctintr(arg) 644 void *arg; 645 { 646 register struct ct_softc *sc = arg; 647 register struct buf *bp, *dp; 648 u_char stat; 649 int unit = sc->sc_hd->hp_unit; 650 651 bp = cttab[unit].b_actf; 652 if (bp == NULL) { 653 printf("%s: bp == NULL\n", sc->sc_hd->hp_xname); 654 return; 655 } 656 if (sc->sc_flags & CTF_IO) { 657 sc->sc_flags &= ~CTF_IO; 658 if (hpibustart(sc->sc_hd->hp_ctlr)) 659 ctgo(unit); 660 return; 661 } 662 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 663 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 664 sc->sc_flags |= CTF_STATWAIT; 665 hpibawait(sc->sc_hd->hp_ctlr); 666 return; 667 } 668 } else 669 sc->sc_flags &= ~CTF_STATWAIT; 670 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 671 #ifdef DEBUG 672 if (ctdebug & CDB_FILES) 673 printf("ctintr: before flags %x\n", sc->sc_flags); 674 #endif 675 if (stat) { 676 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 677 sc->sc_rsc.cmd = C_STATUS; 678 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 679 &sc->sc_rsc, sizeof(sc->sc_rsc)); 680 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 681 &sc->sc_stat, sizeof(sc->sc_stat)); 682 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 683 &stat, 1); 684 #ifdef DEBUG 685 if (ctdebug & CDB_FILES) 686 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 687 stat, sc->sc_stat.c_aef, 688 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 689 #endif 690 if (stat == 0) { 691 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 692 cteof(sc, bp); 693 ctaddeof(unit); 694 goto done; 695 } 696 if (sc->sc_stat.c_fef & FEF_PF) { 697 ctreset(sc, sc->sc_hd); 698 ctstart(unit); 699 return; 700 } 701 if (sc->sc_stat.c_fef & FEF_REXMT) { 702 ctstart(unit); 703 return; 704 } 705 if (sc->sc_stat.c_aef & 0x5800) { 706 if (sc->sc_stat.c_aef & 0x4000) 707 tprintf(sc->sc_tpr, 708 "%s: uninitialized media\n", 709 sc->sc_hd->hp_xname); 710 if (sc->sc_stat.c_aef & 0x1000) 711 tprintf(sc->sc_tpr, 712 "%s: not ready\n", 713 sc->sc_hd->hp_xname); 714 if (sc->sc_stat.c_aef & 0x0800) 715 tprintf(sc->sc_tpr, 716 "%s: write protect\n", 717 sc->sc_hd->hp_xname); 718 } else { 719 printf("%s err: v%d u%d ru%d bn%d, ", 720 sc->sc_hd->hp_xname, 721 (sc->sc_stat.c_vu>>4)&0xF, 722 sc->sc_stat.c_vu&0xF, 723 sc->sc_stat.c_pend, 724 sc->sc_stat.c_blk); 725 printf("R0x%x F0x%x A0x%x I0x%x\n", 726 sc->sc_stat.c_ref, 727 sc->sc_stat.c_fef, 728 sc->sc_stat.c_aef, 729 sc->sc_stat.c_ief); 730 } 731 } else 732 printf("%s: request status failed\n", 733 sc->sc_hd->hp_xname); 734 bp->b_flags |= B_ERROR; 735 bp->b_error = EIO; 736 goto done; 737 } else 738 bp->b_resid = 0; 739 if (sc->sc_flags & CTF_CMD) { 740 switch (sc->sc_cmd) { 741 case MTFSF: 742 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 743 sc->sc_blkno += CTBTOK(sc->sc_resid); 744 ctstart(unit); 745 return; 746 case MTBSF: 747 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 748 break; 749 case MTBSR: 750 sc->sc_flags &= ~CTF_BEOF; 751 if (sc->sc_flags & CTF_EOT) { 752 sc->sc_flags |= CTF_AEOF; 753 sc->sc_flags &= ~CTF_EOT; 754 } else if (sc->sc_flags & CTF_AEOF) { 755 sc->sc_flags |= CTF_BEOF; 756 sc->sc_flags &= ~CTF_AEOF; 757 } 758 break; 759 case MTWEOF: 760 sc->sc_flags &= ~CTF_BEOF; 761 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 762 sc->sc_flags |= CTF_EOT; 763 sc->sc_flags &= ~CTF_AEOF; 764 } else 765 sc->sc_flags |= CTF_AEOF; 766 break; 767 case MTREW: 768 case MTOFFL: 769 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 770 break; 771 } 772 } else { 773 sc->sc_flags &= ~CTF_AEOF; 774 sc->sc_blkno += CTBTOK(sc->sc_resid); 775 } 776 done: 777 #ifdef DEBUG 778 if (ctdebug & CDB_FILES) 779 printf("ctintr: after flags %x\n", sc->sc_flags); 780 #endif 781 ctdone(unit, bp); 782 } 783 784 void 785 ctdone(unit, bp) 786 int unit; 787 register struct buf *bp; 788 { 789 register struct ct_softc *sc = &ct_softc[unit]; 790 register struct buf *dp; 791 792 if (dp = bp->b_actf) 793 dp->b_actb = bp->b_actb; 794 else 795 cttab[unit].b_actb = bp->b_actb; 796 *bp->b_actb = dp; 797 biodone(bp); 798 hpibfree(&sc->sc_dq); 799 if (cttab[unit].b_actf == NULL) { 800 cttab[unit].b_active = 0; 801 return; 802 } 803 ctustart(unit); 804 } 805 806 int 807 ctread(dev, uio, flags) 808 dev_t dev; 809 struct uio *uio; 810 int flags; 811 { 812 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 813 } 814 815 int 816 ctwrite(dev, uio, flags) 817 dev_t dev; 818 struct uio *uio; 819 int flags; 820 { 821 /* XXX: check for hardware write-protect? */ 822 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 823 } 824 825 /*ARGSUSED*/ 826 ctioctl(dev, cmd, data, flag, p) 827 dev_t dev; 828 int cmd, flag; 829 caddr_t data; 830 struct proc *p; 831 { 832 register struct mtop *op; 833 register int cnt; 834 835 switch (cmd) { 836 837 case MTIOCTOP: 838 op = (struct mtop *)data; 839 switch(op->mt_op) { 840 841 case MTWEOF: 842 case MTFSF: 843 case MTBSR: 844 case MTBSF: 845 case MTFSR: 846 cnt = op->mt_count; 847 break; 848 849 case MTREW: 850 case MTOFFL: 851 cnt = 1; 852 break; 853 854 default: 855 return(EINVAL); 856 } 857 ctcommand(dev, op->mt_op, cnt); 858 break; 859 860 case MTIOCGET: 861 break; 862 863 default: 864 return(EINVAL); 865 } 866 return(0); 867 } 868 869 /*ARGSUSED*/ 870 ctdump(dev) 871 dev_t dev; 872 { 873 return(ENXIO); 874 } 875 876 ctaddeof(unit) 877 int unit; 878 { 879 register struct ct_softc *sc = &ct_softc[unit]; 880 881 if (sc->sc_eofp == EOFS - 1) 882 sc->sc_eofs[EOFS - 1]++; 883 else { 884 sc->sc_eofp++; 885 if (sc->sc_eofp == EOFS - 1) 886 sc->sc_eofs[EOFS - 1] = EOFS; 887 else 888 /* save blkno */ 889 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 890 } 891 #ifdef DEBUG 892 if (ctdebug & CT_BSF) 893 printf("%s: add eof pos %d blk %d\n", 894 sc->sc_hd->hp_xname, sc->sc_eofp, 895 sc->sc_eofs[sc->sc_eofp]); 896 #endif 897 } 898 #endif 899
Indexes created Tue Oct 21 12:09:54 GMT 2025