ct.c revision 1.12
1 /* $NetBSD: ct.c,v 1.12 1995/10/09 07:57:43 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 ctinit(), ctstart(), ctgo(), ctintr(); 68 void ctstrategy(), ctdone(); 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 ctdone(unit, bp); 511 return; 512 } 513 sc->sc_flags |= CTF_IO; 514 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 515 sc->sc_ioc.saddr = C_SADDR; 516 sc->sc_ioc.addr0 = 0; 517 sc->sc_ioc.addr = sc->sc_blkno; 518 sc->sc_ioc.nop2 = C_NOP; 519 sc->sc_ioc.slen = C_SLEN; 520 sc->sc_ioc.len = sc->sc_resid; 521 sc->sc_ioc.nop3 = C_NOP; 522 if (bp->b_flags & B_READ) 523 sc->sc_ioc.cmd = C_READ; 524 else { 525 sc->sc_ioc.cmd = C_WRITE; 526 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 527 } 528 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 529 &sc->sc_ioc, sizeof(sc->sc_ioc)); 530 } 531 hpibawait(sc->sc_hd->hp_ctlr); 532 } 533 534 ctgo(unit) 535 register int unit; 536 { 537 register struct ct_softc *sc = &ct_softc[unit]; 538 register struct buf *bp; 539 int rw; 540 541 bp = cttab[unit].b_actf; 542 rw = bp->b_flags & B_READ; 543 hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 544 sc->sc_addr, sc->sc_resid, rw, rw != 0); 545 } 546 547 /* 548 * Hideous grue to handle EOF/EOT (mostly for reads) 549 */ 550 cteof(sc, bp) 551 register struct ct_softc *sc; 552 register struct buf *bp; 553 { 554 long blks; 555 556 /* 557 * EOT on a write is an error. 558 */ 559 if ((bp->b_flags & B_READ) == 0) { 560 bp->b_resid = bp->b_bcount; 561 bp->b_flags |= B_ERROR; 562 bp->b_error = ENOSPC; 563 sc->sc_flags |= CTF_EOT; 564 return; 565 } 566 /* 567 * Use returned block position to determine how many blocks 568 * we really read and update b_resid. 569 */ 570 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 571 #ifdef DEBUG 572 if (ctdebug & CDB_FILES) 573 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 574 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 575 blks, bp->b_bcount - CTKTOB(blks)); 576 #endif 577 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 578 blks = 0; 579 sc->sc_blkno++; 580 } 581 else { 582 sc->sc_blkno = sc->sc_stat.c_blk; 583 } 584 bp->b_resid = bp->b_bcount - CTKTOB(blks); 585 /* 586 * If we are at physical EOV or were after an EOF, 587 * we are now at logical EOT. 588 */ 589 if ((sc->sc_stat.c_aef & AEF_EOV) || 590 (sc->sc_flags & CTF_AEOF)) { 591 sc->sc_flags |= CTF_EOT; 592 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 593 } 594 /* 595 * If we were before an EOF or we have just completed a FSF, 596 * we are now after EOF. 597 */ 598 else if ((sc->sc_flags & CTF_BEOF) || 599 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 600 sc->sc_flags |= CTF_AEOF; 601 sc->sc_flags &= ~CTF_BEOF; 602 } 603 /* 604 * Otherwise if we read something we are now before EOF 605 * (and no longer after EOF). 606 */ 607 else if (blks) { 608 sc->sc_flags |= CTF_BEOF; 609 sc->sc_flags &= ~CTF_AEOF; 610 } 611 /* 612 * Finally, if we didn't read anything we just passed an EOF 613 */ 614 else 615 sc->sc_flags |= CTF_AEOF; 616 #ifdef DEBUG 617 if (ctdebug & CDB_FILES) 618 printf("cteof: leaving flags %x\n", sc->sc_flags); 619 #endif 620 } 621 622 ctintr(unit) 623 register int unit; 624 { 625 register struct ct_softc *sc = &ct_softc[unit]; 626 register struct buf *bp, *dp; 627 u_char stat; 628 629 bp = cttab[unit].b_actf; 630 if (bp == NULL) { 631 printf("ct%d: bp == NULL\n", unit); 632 return; 633 } 634 if (sc->sc_flags & CTF_IO) { 635 sc->sc_flags &= ~CTF_IO; 636 if (hpibustart(sc->sc_hd->hp_ctlr)) 637 ctgo(unit); 638 return; 639 } 640 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 641 if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) { 642 sc->sc_flags |= CTF_STATWAIT; 643 hpibawait(sc->sc_hd->hp_ctlr); 644 return; 645 } 646 } else 647 sc->sc_flags &= ~CTF_STATWAIT; 648 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1); 649 #ifdef DEBUG 650 if (ctdebug & CDB_FILES) 651 printf("ctintr: before flags %x\n", sc->sc_flags); 652 #endif 653 if (stat) { 654 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 655 sc->sc_rsc.cmd = C_STATUS; 656 hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD, 657 &sc->sc_rsc, sizeof(sc->sc_rsc)); 658 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC, 659 &sc->sc_stat, sizeof(sc->sc_stat)); 660 hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, 661 &stat, 1); 662 #ifdef DEBUG 663 if (ctdebug & CDB_FILES) 664 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 665 stat, sc->sc_stat.c_aef, 666 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 667 #endif 668 if (stat == 0) { 669 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 670 cteof(sc, bp); 671 ctaddeof(unit); 672 goto done; 673 } 674 if (sc->sc_stat.c_fef & FEF_PF) { 675 ctreset(sc, sc->sc_hd); 676 ctstart(unit); 677 return; 678 } 679 if (sc->sc_stat.c_fef & FEF_REXMT) { 680 ctstart(unit); 681 return; 682 } 683 if (sc->sc_stat.c_aef & 0x5800) { 684 if (sc->sc_stat.c_aef & 0x4000) 685 tprintf(sc->sc_tpr, 686 "ct%d: uninitialized media\n", 687 unit); 688 if (sc->sc_stat.c_aef & 0x1000) 689 tprintf(sc->sc_tpr, 690 "ct%d: not ready\n", unit); 691 if (sc->sc_stat.c_aef & 0x0800) 692 tprintf(sc->sc_tpr, 693 "ct%d: write protect\n", unit); 694 } else { 695 printf("ct%d err: v%d u%d ru%d bn%d, ", 696 unit, 697 (sc->sc_stat.c_vu>>4)&0xF, 698 sc->sc_stat.c_vu&0xF, 699 sc->sc_stat.c_pend, 700 sc->sc_stat.c_blk); 701 printf("R0x%x F0x%x A0x%x I0x%x\n", 702 sc->sc_stat.c_ref, 703 sc->sc_stat.c_fef, 704 sc->sc_stat.c_aef, 705 sc->sc_stat.c_ief); 706 } 707 } else 708 printf("ct%d: request status failed\n", unit); 709 bp->b_flags |= B_ERROR; 710 bp->b_error = EIO; 711 goto done; 712 } else 713 bp->b_resid = 0; 714 if (sc->sc_flags & CTF_CMD) { 715 switch (sc->sc_cmd) { 716 case MTFSF: 717 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 718 sc->sc_blkno += CTBTOK(sc->sc_resid); 719 ctstart(unit); 720 return; 721 case MTBSF: 722 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 723 break; 724 case MTBSR: 725 sc->sc_flags &= ~CTF_BEOF; 726 if (sc->sc_flags & CTF_EOT) { 727 sc->sc_flags |= CTF_AEOF; 728 sc->sc_flags &= ~CTF_EOT; 729 } else if (sc->sc_flags & CTF_AEOF) { 730 sc->sc_flags |= CTF_BEOF; 731 sc->sc_flags &= ~CTF_AEOF; 732 } 733 break; 734 case MTWEOF: 735 sc->sc_flags &= ~CTF_BEOF; 736 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 737 sc->sc_flags |= CTF_EOT; 738 sc->sc_flags &= ~CTF_AEOF; 739 } else 740 sc->sc_flags |= CTF_AEOF; 741 break; 742 case MTREW: 743 case MTOFFL: 744 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 745 break; 746 } 747 } else { 748 sc->sc_flags &= ~CTF_AEOF; 749 sc->sc_blkno += CTBTOK(sc->sc_resid); 750 } 751 done: 752 #ifdef DEBUG 753 if (ctdebug & CDB_FILES) 754 printf("ctintr: after flags %x\n", sc->sc_flags); 755 #endif 756 ctdone(unit, bp); 757 } 758 759 void 760 ctdone(unit, bp) 761 int unit; 762 register struct buf *bp; 763 { 764 register struct ct_softc *sc = &ct_softc[unit]; 765 register struct buf *dp; 766 767 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 biodone(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 int 782 ctread(dev, uio, flags) 783 dev_t dev; 784 struct uio *uio; 785 int flags; 786 { 787 788 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 789 } 790 791 int 792 ctwrite(dev, uio, flags) 793 dev_t dev; 794 struct uio *uio; 795 int flags; 796 { 797 798 /* XXX: check for hardware write-protect? */ 799 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 800 } 801 802 /*ARGSUSED*/ 803 ctioctl(dev, cmd, data, flag, p) 804 dev_t dev; 805 int cmd, flag; 806 caddr_t data; 807 struct proc *p; 808 { 809 register struct mtop *op; 810 register int cnt; 811 812 switch (cmd) { 813 814 case MTIOCTOP: 815 op = (struct mtop *)data; 816 switch(op->mt_op) { 817 818 case MTWEOF: 819 case MTFSF: 820 case MTBSR: 821 case MTBSF: 822 case MTFSR: 823 cnt = op->mt_count; 824 break; 825 826 case MTREW: 827 case MTOFFL: 828 cnt = 1; 829 break; 830 831 default: 832 return(EINVAL); 833 } 834 ctcommand(dev, op->mt_op, cnt); 835 break; 836 837 case MTIOCGET: 838 break; 839 840 default: 841 return(EINVAL); 842 } 843 return(0); 844 } 845 846 /*ARGSUSED*/ 847 ctdump(dev) 848 dev_t dev; 849 { 850 return(ENXIO); 851 } 852 853 ctaddeof(unit) 854 int unit; 855 { 856 register struct ct_softc *sc = &ct_softc[unit]; 857 858 if (sc->sc_eofp == EOFS - 1) 859 sc->sc_eofs[EOFS - 1]++; 860 else { 861 sc->sc_eofp++; 862 if (sc->sc_eofp == EOFS - 1) 863 sc->sc_eofs[EOFS - 1] = EOFS; 864 else 865 /* save blkno */ 866 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 867 } 868 #ifdef DEBUG 869 if (ctdebug & CT_BSF) 870 printf("ct%d: add eof pos %d blk %d\n", 871 unit, sc->sc_eofp, 872 sc->sc_eofs[sc->sc_eofp]); 873 #endif 874 } 875 #endif 876
Indexes created Tue Sep 23 02:09:52 GMT 2025