ct.c revision 1.19
1 /* $NetBSD: ct.c,v 1.19 1997/01/30 09:14:12 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 Jason R. Thorpe. All rights reserved. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)ct.c 8.2 (Berkeley) 1/12/94 37 */ 38 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 #include <sys/device.h> 60 #include <sys/conf.h> 61 62 #include <hp300/dev/hpibvar.h> 63 64 #include <hp300/dev/ctreg.h> 65 66 /* number of eof marks to remember */ 67 #define EOFS 128 68 69 struct ct_softc { 70 struct device sc_dev; 71 int sc_slave; /* HP-IB slave ID */ 72 int sc_punit; /* physical unit */ 73 struct ct_iocmd sc_ioc; 74 struct ct_rscmd sc_rsc; 75 struct ct_stat sc_stat; 76 struct ct_ssmcmd sc_ssmc; 77 struct ct_srcmd sc_src; 78 struct ct_soptcmd sc_soptc; 79 struct ct_ulcmd sc_ul; 80 struct ct_wfmcmd sc_wfm; 81 struct ct_clearcmd sc_clear; 82 struct buf sc_tab; 83 struct buf *sc_bp; 84 struct buf sc_bufstore; /* XXX */ 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 tpr_t sc_tpr; 92 struct hpibqueue sc_hq; /* entry on hpib job queue */ 93 int sc_eofp; 94 int sc_eofs[EOFS]; 95 }; 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 int ctmatch __P((struct device *, struct cfdata *, void *)); 111 void ctattach __P((struct device *, struct device *, void *)); 112 113 struct cfattach ct_ca = { 114 sizeof(struct ct_softc), ctmatch, ctattach 115 }; 116 117 struct cfdriver ct_cd = { 118 NULL, "ct", DV_TAPE 119 }; 120 121 int ctident __P((struct device *, struct ct_softc *, 122 struct hpibbus_attach_args *)); 123 124 void ctreset __P((struct ct_softc *)); 125 void ctaddeof __P((struct ct_softc *)); 126 void ctustart __P((struct ct_softc *)); 127 void cteof __P((struct ct_softc *, struct buf *)); 128 void ctdone __P((struct ct_softc *, struct buf *)); 129 130 void ctstart __P((void *)); 131 void ctgo __P((void *)); 132 void ctintr __P((void *)); 133 134 void ctcommand __P((dev_t, int, int)); 135 136 cdev_decl(ct); 137 bdev_decl(ct); 138 139 struct ctinfo { 140 short hwid; 141 short punit; 142 char *desc; 143 } ctinfo[] = { 144 CT7946ID, 1, "7946A", 145 CT7912PID, 1, "7912P", 146 CT7914PID, 1, "7914P", 147 CT9144ID, 0, "9144", 148 CT9145ID, 0, "9145", 149 }; 150 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 151 152 #define CT_NOREW 4 153 #define CT_STREAM 8 154 #define UNIT(x) (minor(x) & 3) 155 #define ctpunit(x) ((x) & 7) 156 157 #ifdef DEBUG 158 int ctdebug = 0; 159 #define CDB_FILES 0x01 160 #define CT_BSF 0x02 161 #endif 162 163 int 164 ctmatch(parent, match, aux) 165 struct device *parent; 166 struct cfdata *match; 167 void *aux; 168 { 169 struct hpibbus_attach_args *ha = aux; 170 171 return (ctident(parent, NULL, ha)); 172 } 173 174 void 175 ctattach(parent, self, aux) 176 struct device *parent, *self; 177 void *aux; 178 { 179 struct ct_softc *sc = (struct ct_softc *)self; 180 struct hpibbus_attach_args *ha = aux; 181 182 if (ctident(parent, sc, ha) == 0) { 183 printf("\n%s: didn't respond to describe command!\n", 184 sc->sc_dev.dv_xname); 185 return; 186 } 187 188 sc->sc_slave = ha->ha_slave; 189 sc->sc_punit = ha->ha_punit; 190 191 sc->sc_tab.b_actb = &sc->sc_tab.b_actf; 192 193 /* Initialize hpib job queue entry. */ 194 sc->sc_hq.hq_softc = sc; 195 sc->sc_hq.hq_slave = sc->sc_slave; 196 sc->sc_hq.hq_start = ctstart; 197 sc->sc_hq.hq_go = ctgo; 198 sc->sc_hq.hq_intr = ctintr; 199 200 ctreset(sc); 201 sc->sc_flags |= CTF_ALIVE; 202 } 203 204 int 205 ctident(parent, sc, ha) 206 struct device *parent; 207 struct ct_softc *sc; 208 struct hpibbus_attach_args *ha; 209 { 210 struct ct_describe desc; 211 u_char stat, cmd[3]; 212 char name[7]; 213 int i, id, n, type, canstream; 214 215 type = canstream = 0; 216 217 /* Verify that we have a CS80 device. */ 218 if ((ha->ha_id & 0x200) == 0) 219 return (0); 220 221 /* Is it one of the tapes we support? */ 222 for (id = 0; id < nctinfo; id++) 223 if (ha->ha_id == ctinfo[id].hwid) 224 break; 225 if (id == nctinfo) 226 return (0); 227 228 ha->ha_punit = ctinfo[id].punit; 229 230 /* 231 * So far, so good. Get drive parameters. Note command 232 * is always issued to unit 0. 233 */ 234 cmd[0] = C_SUNIT(0); 235 cmd[1] = C_SVOL(0); 236 cmd[2] = C_DESC; 237 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 238 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 239 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 240 241 bzero(name, sizeof(name)); 242 if (stat == 0) { 243 n = desc.d_name; 244 for (i = 5; i >= 0; i--) { 245 name[i] = (n & 0xf) + '0'; 246 n >>= 4; 247 } 248 } 249 250 switch (ha->ha_id) { 251 case CT7946ID: 252 if (bcmp(name, "079450", 6) == 0) 253 return (0); /* not really a 7946 */ 254 /* fall into... */ 255 case CT9144ID: 256 case CT9145ID: 257 type = CT9144; 258 canstream = 1; 259 break; 260 261 case CT7912PID: 262 case CT7914PID: 263 type = CT88140; 264 break; 265 } 266 267 if (sc != NULL) { 268 sc->sc_type = type; 269 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 270 printf(": %s %stape\n", ctinfo[id].desc, 271 canstream ? "streaming " : ""); 272 } 273 274 return (1); 275 } 276 277 void 278 ctreset(sc) 279 struct ct_softc *sc; 280 { 281 int ctlr, slave; 282 u_char stat; 283 284 ctlr = sc->sc_dev.dv_parent->dv_unit; 285 slave = sc->sc_slave; 286 287 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 288 sc->sc_clear.cmd = C_CLEAR; 289 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 290 hpibswait(ctlr, slave); 291 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 292 293 sc->sc_src.unit = C_SUNIT(CTCTLR); 294 sc->sc_src.nop = C_NOP; 295 sc->sc_src.cmd = C_SREL; 296 sc->sc_src.param = C_REL; 297 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 298 hpibswait(ctlr, slave); 299 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 300 301 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 302 sc->sc_ssmc.cmd = C_SSM; 303 sc->sc_ssmc.refm = REF_MASK; 304 sc->sc_ssmc.fefm = FEF_MASK; 305 sc->sc_ssmc.aefm = AEF_MASK; 306 sc->sc_ssmc.iefm = IEF_MASK; 307 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 308 hpibswait(ctlr, slave); 309 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 310 311 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 312 sc->sc_soptc.nop = C_NOP; 313 sc->sc_soptc.cmd = C_SOPT; 314 sc->sc_soptc.opt = C_SPAR; 315 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 316 hpibswait(ctlr, slave); 317 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 318 } 319 320 /*ARGSUSED*/ 321 int 322 ctopen(dev, flag, type, p) 323 dev_t dev; 324 int flag, type; 325 struct proc *p; 326 { 327 struct ct_softc *sc; 328 u_char stat; 329 int cc, ctlr, slave; 330 331 if (UNIT(dev) >= ct_cd.cd_ndevs || 332 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 333 (sc->sc_flags & CTF_ALIVE) == 0) 334 return (ENXIO); 335 336 if (sc->sc_flags & CTF_OPEN) 337 return (EBUSY); 338 339 ctlr = sc->sc_dev.dv_parent->dv_unit; 340 slave = sc->sc_slave; 341 342 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 343 sc->sc_soptc.nop = C_NOP; 344 sc->sc_soptc.cmd = C_SOPT; 345 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 346 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 347 else 348 sc->sc_soptc.opt = C_SPAR; 349 350 /* 351 * Check the return of hpibsend() and hpibswait(). 352 * Drive could be loading/unloading a tape. If not checked, 353 * driver hangs. 354 */ 355 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 356 if (cc != sizeof(sc->sc_soptc)) 357 return (EBUSY); 358 359 hpibswait(ctlr, slave); 360 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 361 if (cc != sizeof(stat)) 362 return(EBUSY); 363 364 sc->sc_tpr = tprintf_open(p); 365 sc->sc_flags |= CTF_OPEN; 366 return(0); 367 } 368 369 /*ARGSUSED*/ 370 int 371 ctclose(dev, flag, fmt, p) 372 dev_t dev; 373 int flag, fmt; 374 struct proc *p; 375 { 376 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 377 378 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 379 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 380 ctcommand(dev, MTWEOF, 2); 381 ctcommand(dev, MTBSR, 1); 382 if (sc->sc_eofp == EOFS - 1) 383 sc->sc_eofs[EOFS - 1]--; 384 else 385 sc->sc_eofp--; 386 #ifdef DEBUG 387 if(ctdebug & CT_BSF) 388 printf("%s: ctclose backup eofs prt %d blk %d\n", 389 sc->sc_dev.dv_xname, sc->sc_eofp, 390 sc->sc_eofs[sc->sc_eofp]); 391 #endif 392 } 393 if ((minor(dev) & CT_NOREW) == 0) 394 ctcommand(dev, MTREW, 1); 395 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 396 tprintf_close(sc->sc_tpr); 397 #ifdef DEBUG 398 if (ctdebug & CDB_FILES) 399 printf("ctclose: flags %x\n", sc->sc_flags); 400 #endif 401 return(0); /* XXX */ 402 } 403 404 void 405 ctcommand(dev, cmd, cnt) 406 dev_t dev; 407 int cmd; 408 register int cnt; 409 { 410 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 411 register struct buf *bp = &sc->sc_bufstore; 412 register struct buf *nbp = 0; 413 414 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 415 cnt = sc->sc_eofs[EOFS - 1] - cnt; 416 ctcommand(dev, MTREW, 1); 417 ctcommand(dev, MTFSF, cnt); 418 cnt = 2; 419 cmd = MTBSR; 420 } 421 422 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 423 cnt = 1; 424 cmd = MTREW; 425 } 426 427 sc->sc_flags |= CTF_CMD; 428 sc->sc_bp = bp; 429 sc->sc_cmd = cmd; 430 bp->b_dev = dev; 431 if (cmd == MTFSF) { 432 nbp = (struct buf *)geteblk(MAXBSIZE); 433 bp->b_un.b_addr = nbp->b_un.b_addr; 434 bp->b_bcount = MAXBSIZE; 435 } 436 437 while (cnt-- > 0) { 438 bp->b_flags = B_BUSY; 439 if (cmd == MTBSF) { 440 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 441 sc->sc_eofp--; 442 #ifdef DEBUG 443 if (ctdebug & CT_BSF) 444 printf("%s: backup eof pos %d blk %d\n", 445 sc->sc_dev.dv_xname, sc->sc_eofp, 446 sc->sc_eofs[sc->sc_eofp]); 447 #endif 448 } 449 ctstrategy(bp); 450 iowait(bp); 451 } 452 bp->b_flags = 0; 453 sc->sc_flags &= ~CTF_CMD; 454 if (nbp) 455 brelse(nbp); 456 } 457 458 void 459 ctstrategy(bp) 460 register struct buf *bp; 461 { 462 register struct buf *dp; 463 register int s, unit; 464 struct ct_softc *sc; 465 466 unit = UNIT(bp->b_dev); 467 sc = ct_cd.cd_devs[unit]; 468 469 dp = &sc->sc_tab; 470 bp->b_actf = NULL; 471 s = splbio(); 472 bp->b_actb = dp->b_actb; 473 *(dp->b_actb) = bp; 474 dp->b_actb = &bp->b_actf; 475 if (dp->b_active == 0) { 476 dp->b_active = 1; 477 ctustart(sc); 478 } 479 splx(s); 480 } 481 482 void 483 ctustart(sc) 484 struct ct_softc *sc; 485 { 486 register struct buf *bp; 487 488 bp = sc->sc_tab.b_actf; 489 sc->sc_addr = bp->b_un.b_addr; 490 sc->sc_resid = bp->b_bcount; 491 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 492 ctstart(sc); 493 } 494 495 void 496 ctstart(arg) 497 void *arg; 498 { 499 struct ct_softc *sc = arg; 500 struct buf *bp, *dp; 501 int i, ctlr, slave; 502 503 ctlr = sc->sc_dev.dv_parent->dv_unit; 504 slave = sc->sc_slave; 505 506 bp = sc->sc_tab.b_actf; 507 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 508 switch(sc->sc_cmd) { 509 case MTFSF: 510 bp->b_flags |= B_READ; 511 goto mustio; 512 513 case MTBSF: 514 goto gotaddr; 515 516 case MTOFFL: 517 sc->sc_blkno = 0; 518 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 519 sc->sc_ul.cmd = C_UNLOAD; 520 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 521 sizeof(sc->sc_ul)); 522 break; 523 524 case MTWEOF: 525 sc->sc_blkno++; 526 sc->sc_flags |= CTF_WRT; 527 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 528 sc->sc_wfm.cmd = C_WFM; 529 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 530 sizeof(sc->sc_wfm)); 531 ctaddeof(sc); 532 break; 533 534 case MTBSR: 535 sc->sc_blkno--; 536 goto gotaddr; 537 538 case MTFSR: 539 sc->sc_blkno++; 540 goto gotaddr; 541 542 case MTREW: 543 sc->sc_blkno = 0; 544 #ifdef DEBUG 545 if(ctdebug & CT_BSF) 546 printf("%s: clearing eofs\n", 547 sc->sc_dev.dv_xname); 548 #endif 549 for (i=0; i<EOFS; i++) 550 sc->sc_eofs[i] = 0; 551 sc->sc_eofp = 0; 552 553 gotaddr: 554 sc->sc_ioc.saddr = C_SADDR; 555 sc->sc_ioc.addr0 = 0; 556 sc->sc_ioc.addr = sc->sc_blkno; 557 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 558 sc->sc_ioc.nop2 = C_NOP; 559 sc->sc_ioc.slen = C_SLEN; 560 sc->sc_ioc.len = 0; 561 sc->sc_ioc.nop3 = C_NOP; 562 sc->sc_ioc.cmd = C_READ; 563 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 564 sizeof(sc->sc_ioc)); 565 break; 566 } 567 } else { 568 mustio: 569 if ((bp->b_flags & B_READ) && 570 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 571 #ifdef DEBUG 572 if (ctdebug & CDB_FILES) 573 printf("ctstart: before flags %x\n", 574 sc->sc_flags); 575 #endif 576 if (sc->sc_flags & CTF_BEOF) { 577 sc->sc_flags &= ~CTF_BEOF; 578 sc->sc_flags |= CTF_AEOF; 579 #ifdef DEBUG 580 if (ctdebug & CDB_FILES) 581 printf("ctstart: after flags %x\n", 582 sc->sc_flags); 583 #endif 584 } 585 bp->b_resid = bp->b_bcount; 586 ctdone(sc, bp); 587 return; 588 } 589 sc->sc_flags |= CTF_IO; 590 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 591 sc->sc_ioc.saddr = C_SADDR; 592 sc->sc_ioc.addr0 = 0; 593 sc->sc_ioc.addr = sc->sc_blkno; 594 sc->sc_ioc.nop2 = C_NOP; 595 sc->sc_ioc.slen = C_SLEN; 596 sc->sc_ioc.len = sc->sc_resid; 597 sc->sc_ioc.nop3 = C_NOP; 598 if (bp->b_flags & B_READ) 599 sc->sc_ioc.cmd = C_READ; 600 else { 601 sc->sc_ioc.cmd = C_WRITE; 602 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 603 } 604 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 605 } 606 hpibawait(ctlr); 607 } 608 609 void 610 ctgo(arg) 611 void *arg; 612 { 613 struct ct_softc *sc = arg; 614 register struct buf *bp; 615 int rw; 616 617 bp = sc->sc_tab.b_actf; 618 rw = bp->b_flags & B_READ; 619 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 620 sc->sc_addr, sc->sc_resid, rw, rw != 0); 621 } 622 623 /* 624 * Hideous grue to handle EOF/EOT (mostly for reads) 625 */ 626 void 627 cteof(sc, bp) 628 register struct ct_softc *sc; 629 register struct buf *bp; 630 { 631 long blks; 632 633 /* 634 * EOT on a write is an error. 635 */ 636 if ((bp->b_flags & B_READ) == 0) { 637 bp->b_resid = bp->b_bcount; 638 bp->b_flags |= B_ERROR; 639 bp->b_error = ENOSPC; 640 sc->sc_flags |= CTF_EOT; 641 return; 642 } 643 /* 644 * Use returned block position to determine how many blocks 645 * we really read and update b_resid. 646 */ 647 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 648 #ifdef DEBUG 649 if (ctdebug & CDB_FILES) 650 printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n", 651 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 652 blks, bp->b_bcount - CTKTOB(blks)); 653 #endif 654 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 655 blks = 0; 656 sc->sc_blkno++; 657 } 658 else { 659 sc->sc_blkno = sc->sc_stat.c_blk; 660 } 661 bp->b_resid = bp->b_bcount - CTKTOB(blks); 662 /* 663 * If we are at physical EOV or were after an EOF, 664 * we are now at logical EOT. 665 */ 666 if ((sc->sc_stat.c_aef & AEF_EOV) || 667 (sc->sc_flags & CTF_AEOF)) { 668 sc->sc_flags |= CTF_EOT; 669 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 670 } 671 /* 672 * If we were before an EOF or we have just completed a FSF, 673 * we are now after EOF. 674 */ 675 else if ((sc->sc_flags & CTF_BEOF) || 676 (sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) { 677 sc->sc_flags |= CTF_AEOF; 678 sc->sc_flags &= ~CTF_BEOF; 679 } 680 /* 681 * Otherwise if we read something we are now before EOF 682 * (and no longer after EOF). 683 */ 684 else if (blks) { 685 sc->sc_flags |= CTF_BEOF; 686 sc->sc_flags &= ~CTF_AEOF; 687 } 688 /* 689 * Finally, if we didn't read anything we just passed an EOF 690 */ 691 else 692 sc->sc_flags |= CTF_AEOF; 693 #ifdef DEBUG 694 if (ctdebug & CDB_FILES) 695 printf("cteof: leaving flags %x\n", sc->sc_flags); 696 #endif 697 } 698 699 /* ARGSUSED */ 700 void 701 ctintr(arg) 702 void *arg; 703 { 704 register struct ct_softc *sc = arg; 705 register struct buf *bp; 706 u_char stat; 707 int ctlr, slave, unit; 708 709 ctlr = sc->sc_dev.dv_parent->dv_unit; 710 slave = sc->sc_slave; 711 unit = sc->sc_dev.dv_unit; 712 713 bp = sc->sc_tab.b_actf; 714 if (bp == NULL) { 715 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 716 return; 717 } 718 if (sc->sc_flags & CTF_IO) { 719 sc->sc_flags &= ~CTF_IO; 720 if (hpibustart(ctlr)) 721 ctgo(sc); 722 return; 723 } 724 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 725 if (hpibpptest(ctlr, slave) == 0) { 726 sc->sc_flags |= CTF_STATWAIT; 727 hpibawait(ctlr); 728 return; 729 } 730 } else 731 sc->sc_flags &= ~CTF_STATWAIT; 732 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 733 #ifdef DEBUG 734 if (ctdebug & CDB_FILES) 735 printf("ctintr: before flags %x\n", sc->sc_flags); 736 #endif 737 if (stat) { 738 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 739 sc->sc_rsc.cmd = C_STATUS; 740 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 741 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 742 sizeof(sc->sc_stat)); 743 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 744 #ifdef DEBUG 745 if (ctdebug & CDB_FILES) 746 printf("ctintr: return stat 0x%x, A%x F%x blk %d\n", 747 stat, sc->sc_stat.c_aef, 748 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 749 #endif 750 if (stat == 0) { 751 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 752 cteof(sc, bp); 753 ctaddeof(sc); 754 goto done; 755 } 756 if (sc->sc_stat.c_fef & FEF_PF) { 757 ctreset(sc); 758 ctstart(sc); 759 return; 760 } 761 if (sc->sc_stat.c_fef & FEF_REXMT) { 762 ctstart(sc); 763 return; 764 } 765 if (sc->sc_stat.c_aef & 0x5800) { 766 if (sc->sc_stat.c_aef & 0x4000) 767 tprintf(sc->sc_tpr, 768 "%s: uninitialized media\n", 769 sc->sc_dev.dv_xname); 770 if (sc->sc_stat.c_aef & 0x1000) 771 tprintf(sc->sc_tpr, 772 "%s: not ready\n", 773 sc->sc_dev.dv_xname); 774 if (sc->sc_stat.c_aef & 0x0800) 775 tprintf(sc->sc_tpr, 776 "%s: write protect\n", 777 sc->sc_dev.dv_xname); 778 } else { 779 printf("%s err: v%d u%d ru%d bn%d, ", 780 sc->sc_dev.dv_xname, 781 (sc->sc_stat.c_vu>>4)&0xF, 782 sc->sc_stat.c_vu&0xF, 783 sc->sc_stat.c_pend, 784 sc->sc_stat.c_blk); 785 printf("R0x%x F0x%x A0x%x I0x%x\n", 786 sc->sc_stat.c_ref, 787 sc->sc_stat.c_fef, 788 sc->sc_stat.c_aef, 789 sc->sc_stat.c_ief); 790 } 791 } else 792 printf("%s: request status failed\n", 793 sc->sc_dev.dv_xname); 794 bp->b_flags |= B_ERROR; 795 bp->b_error = EIO; 796 goto done; 797 } else 798 bp->b_resid = 0; 799 if (sc->sc_flags & CTF_CMD) { 800 switch (sc->sc_cmd) { 801 case MTFSF: 802 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 803 sc->sc_blkno += CTBTOK(sc->sc_resid); 804 ctstart(sc); 805 return; 806 case MTBSF: 807 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 808 break; 809 case MTBSR: 810 sc->sc_flags &= ~CTF_BEOF; 811 if (sc->sc_flags & CTF_EOT) { 812 sc->sc_flags |= CTF_AEOF; 813 sc->sc_flags &= ~CTF_EOT; 814 } else if (sc->sc_flags & CTF_AEOF) { 815 sc->sc_flags |= CTF_BEOF; 816 sc->sc_flags &= ~CTF_AEOF; 817 } 818 break; 819 case MTWEOF: 820 sc->sc_flags &= ~CTF_BEOF; 821 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 822 sc->sc_flags |= CTF_EOT; 823 sc->sc_flags &= ~CTF_AEOF; 824 } else 825 sc->sc_flags |= CTF_AEOF; 826 break; 827 case MTREW: 828 case MTOFFL: 829 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 830 break; 831 } 832 } else { 833 sc->sc_flags &= ~CTF_AEOF; 834 sc->sc_blkno += CTBTOK(sc->sc_resid); 835 } 836 done: 837 #ifdef DEBUG 838 if (ctdebug & CDB_FILES) 839 printf("ctintr: after flags %x\n", sc->sc_flags); 840 #endif 841 ctdone(sc, bp); 842 } 843 844 void 845 ctdone(sc, bp) 846 struct ct_softc *sc; 847 register struct buf *bp; 848 { 849 register struct buf *dp; 850 851 if ((dp = bp->b_actf) != NULL) 852 dp->b_actb = bp->b_actb; 853 else 854 sc->sc_tab.b_actb = bp->b_actb; 855 *bp->b_actb = dp; 856 biodone(bp); 857 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 858 if (sc->sc_tab.b_actf == NULL) { 859 sc->sc_tab.b_active = 0; 860 return; 861 } 862 ctustart(sc); 863 } 864 865 int 866 ctread(dev, uio, flags) 867 dev_t dev; 868 struct uio *uio; 869 int flags; 870 { 871 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 872 } 873 874 int 875 ctwrite(dev, uio, flags) 876 dev_t dev; 877 struct uio *uio; 878 int flags; 879 { 880 /* XXX: check for hardware write-protect? */ 881 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 882 } 883 884 /*ARGSUSED*/ 885 int 886 ctioctl(dev, cmd, data, flag, p) 887 dev_t dev; 888 u_long cmd; 889 int flag; 890 caddr_t data; 891 struct proc *p; 892 { 893 register struct mtop *op; 894 register int cnt; 895 896 switch (cmd) { 897 898 case MTIOCTOP: 899 op = (struct mtop *)data; 900 switch(op->mt_op) { 901 902 case MTWEOF: 903 case MTFSF: 904 case MTBSR: 905 case MTBSF: 906 case MTFSR: 907 cnt = op->mt_count; 908 break; 909 910 case MTREW: 911 case MTOFFL: 912 cnt = 1; 913 break; 914 915 default: 916 return(EINVAL); 917 } 918 ctcommand(dev, op->mt_op, cnt); 919 break; 920 921 case MTIOCGET: 922 break; 923 924 default: 925 return(EINVAL); 926 } 927 return(0); 928 } 929 930 /* ARGSUSED */ 931 int 932 ctdump(dev, blkno, va, size) 933 dev_t dev; 934 daddr_t blkno; 935 caddr_t va; 936 size_t size; 937 { 938 939 return (ENODEV); 940 } 941 942 void 943 ctaddeof(sc) 944 struct ct_softc *sc; 945 { 946 947 if (sc->sc_eofp == EOFS - 1) 948 sc->sc_eofs[EOFS - 1]++; 949 else { 950 sc->sc_eofp++; 951 if (sc->sc_eofp == EOFS - 1) 952 sc->sc_eofs[EOFS - 1] = EOFS; 953 else 954 /* save blkno */ 955 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 956 } 957 #ifdef DEBUG 958 if (ctdebug & CT_BSF) 959 printf("%s: add eof pos %d blk %d\n", 960 sc->sc_dev.dv_xname, sc->sc_eofp, 961 sc->sc_eofs[sc->sc_eofp]); 962 #endif 963 } 964
Indexes created Tue Sep 23 14:10:03 GMT 2025