ct.c revision 1.23.20.1
1 /* $NetBSD: ct.c,v 1.23.20.1 1999/12/21 23:15:58 wrstuden Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1982, 1990, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)ct.c 8.2 (Berkeley) 1/12/94 72 */ 73 74 /* 75 * CS80 cartridge tape driver (9144, 88140, 9145) 76 * 77 * Reminder: 78 * C_CC bit (character count option) when used in the CS/80 command 79 * 'set options' will cause the tape not to stream. 80 * 81 * TODO: 82 * make filesystem compatible 83 * make block mode work according to mtio(4) spec. (if possible) 84 * merge with cs80 disk driver 85 * finish support of 9145 86 */ 87 88 #include <sys/param.h> 89 #include <sys/systm.h> 90 #include <sys/buf.h> 91 #include <sys/conf.h> 92 #include <sys/device.h> 93 #include <sys/ioctl.h> 94 #include <sys/mtio.h> 95 #include <sys/proc.h> 96 #include <sys/tprintf.h> 97 98 #include <hp300/dev/hpibvar.h> 99 100 #include <hp300/dev/ctreg.h> 101 102 /* number of eof marks to remember */ 103 #define EOFS 128 104 105 struct ct_softc { 106 struct device sc_dev; 107 int sc_slave; /* HP-IB slave ID */ 108 int sc_punit; /* physical unit */ 109 struct ct_iocmd sc_ioc; 110 struct ct_rscmd sc_rsc; 111 struct ct_stat sc_stat; 112 struct ct_ssmcmd sc_ssmc; 113 struct ct_srcmd sc_src; 114 struct ct_soptcmd sc_soptc; 115 struct ct_ulcmd sc_ul; 116 struct ct_wfmcmd sc_wfm; 117 struct ct_clearcmd sc_clear; 118 struct buf sc_tab; 119 struct buf *sc_bp; 120 struct buf sc_bufstore; /* XXX */ 121 int sc_blkno; 122 int sc_cmd; 123 int sc_resid; 124 char *sc_addr; 125 int sc_flags; 126 short sc_type; 127 tpr_t sc_tpr; 128 struct hpibqueue sc_hq; /* entry on hpib job queue */ 129 int sc_eofp; 130 int sc_eofs[EOFS]; 131 }; 132 133 /* flags */ 134 #define CTF_OPEN 0x01 135 #define CTF_ALIVE 0x02 136 #define CTF_WRT 0x04 137 #define CTF_CMD 0x08 138 #define CTF_IO 0x10 139 #define CTF_BEOF 0x20 140 #define CTF_AEOF 0x40 141 #define CTF_EOT 0x80 142 #define CTF_STATWAIT 0x100 143 #define CTF_CANSTREAM 0x200 144 #define CTF_WRTTN 0x400 145 146 int ctmatch __P((struct device *, struct cfdata *, void *)); 147 void ctattach __P((struct device *, struct device *, void *)); 148 149 struct cfattach ct_ca = { 150 sizeof(struct ct_softc), ctmatch, ctattach 151 }; 152 153 extern struct cfdriver ct_cd; 154 155 int ctident __P((struct device *, struct ct_softc *, 156 struct hpibbus_attach_args *)); 157 158 void ctreset __P((struct ct_softc *)); 159 void ctaddeof __P((struct ct_softc *)); 160 void ctustart __P((struct ct_softc *)); 161 void cteof __P((struct ct_softc *, struct buf *)); 162 void ctdone __P((struct ct_softc *, struct buf *)); 163 164 void ctstart __P((void *)); 165 void ctgo __P((void *)); 166 void ctintr __P((void *)); 167 168 void ctcommand __P((dev_t, int, int)); 169 170 cdev_decl(ct); 171 bdev_decl(ct); 172 173 struct ctinfo { 174 short hwid; 175 short punit; 176 char *desc; 177 } ctinfo[] = { 178 { CT7946ID, 1, "7946A" }, 179 { CT7912PID, 1, "7912P" }, 180 { CT7914PID, 1, "7914P" }, 181 { CT9144ID, 0, "9144" }, 182 { CT9145ID, 0, "9145" }, 183 }; 184 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 185 186 #define CT_NOREW 4 187 #define CT_STREAM 8 188 #define UNIT(x) (minor(x) & 3) 189 #define ctpunit(x) ((x) & 7) 190 191 #ifdef DEBUG 192 int ctdebug = 0; 193 #define CDB_FILES 0x01 194 #define CT_BSF 0x02 195 #endif 196 197 int 198 ctmatch(parent, match, aux) 199 struct device *parent; 200 struct cfdata *match; 201 void *aux; 202 { 203 struct hpibbus_attach_args *ha = aux; 204 205 return (ctident(parent, NULL, ha)); 206 } 207 208 void 209 ctattach(parent, self, aux) 210 struct device *parent, *self; 211 void *aux; 212 { 213 struct ct_softc *sc = (struct ct_softc *)self; 214 struct hpibbus_attach_args *ha = aux; 215 216 if (ctident(parent, sc, ha) == 0) { 217 printf("\n%s: didn't respond to describe command!\n", 218 sc->sc_dev.dv_xname); 219 return; 220 } 221 222 sc->sc_slave = ha->ha_slave; 223 sc->sc_punit = ha->ha_punit; 224 225 sc->sc_tab.b_actb = &sc->sc_tab.b_actf; 226 227 /* Initialize hpib job queue entry. */ 228 sc->sc_hq.hq_softc = sc; 229 sc->sc_hq.hq_slave = sc->sc_slave; 230 sc->sc_hq.hq_start = ctstart; 231 sc->sc_hq.hq_go = ctgo; 232 sc->sc_hq.hq_intr = ctintr; 233 234 ctreset(sc); 235 sc->sc_flags |= CTF_ALIVE; 236 } 237 238 int 239 ctident(parent, sc, ha) 240 struct device *parent; 241 struct ct_softc *sc; 242 struct hpibbus_attach_args *ha; 243 { 244 struct ct_describe desc; 245 u_char stat, cmd[3]; 246 char name[7]; 247 int i, id, n, type, canstream; 248 249 type = canstream = 0; 250 251 /* Verify that we have a CS80 device. */ 252 if ((ha->ha_id & 0x200) == 0) 253 return (0); 254 255 /* Is it one of the tapes we support? */ 256 for (id = 0; id < nctinfo; id++) 257 if (ha->ha_id == ctinfo[id].hwid) 258 break; 259 if (id == nctinfo) 260 return (0); 261 262 ha->ha_punit = ctinfo[id].punit; 263 264 /* 265 * So far, so good. Get drive parameters. Note command 266 * is always issued to unit 0. 267 */ 268 cmd[0] = C_SUNIT(0); 269 cmd[1] = C_SVOL(0); 270 cmd[2] = C_DESC; 271 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 272 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 273 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 274 275 bzero(name, sizeof(name)); 276 if (stat == 0) { 277 n = desc.d_name; 278 for (i = 5; i >= 0; i--) { 279 name[i] = (n & 0xf) + '0'; 280 n >>= 4; 281 } 282 } 283 284 switch (ha->ha_id) { 285 case CT7946ID: 286 if (bcmp(name, "079450", 6) == 0) 287 return (0); /* not really a 7946 */ 288 /* fall into... */ 289 case CT9144ID: 290 case CT9145ID: 291 type = CT9144; 292 canstream = 1; 293 break; 294 295 case CT7912PID: 296 case CT7914PID: 297 type = CT88140; 298 break; 299 } 300 301 if (sc != NULL) { 302 sc->sc_type = type; 303 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 304 printf(": %s %stape\n", ctinfo[id].desc, 305 canstream ? "streaming " : ""); 306 } 307 308 return (1); 309 } 310 311 void 312 ctreset(sc) 313 struct ct_softc *sc; 314 { 315 int ctlr, slave; 316 u_char stat; 317 318 ctlr = sc->sc_dev.dv_parent->dv_unit; 319 slave = sc->sc_slave; 320 321 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 322 sc->sc_clear.cmd = C_CLEAR; 323 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 324 hpibswait(ctlr, slave); 325 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 326 327 sc->sc_src.unit = C_SUNIT(CTCTLR); 328 sc->sc_src.nop = C_NOP; 329 sc->sc_src.cmd = C_SREL; 330 sc->sc_src.param = C_REL; 331 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 332 hpibswait(ctlr, slave); 333 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 334 335 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 336 sc->sc_ssmc.cmd = C_SSM; 337 sc->sc_ssmc.refm = REF_MASK; 338 sc->sc_ssmc.fefm = FEF_MASK; 339 sc->sc_ssmc.aefm = AEF_MASK; 340 sc->sc_ssmc.iefm = IEF_MASK; 341 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 342 hpibswait(ctlr, slave); 343 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 344 345 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 346 sc->sc_soptc.nop = C_NOP; 347 sc->sc_soptc.cmd = C_SOPT; 348 sc->sc_soptc.opt = C_SPAR; 349 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 350 hpibswait(ctlr, slave); 351 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 352 } 353 354 /*ARGSUSED*/ 355 int 356 ctopen(dev, flag, type, p) 357 dev_t dev; 358 int flag, type; 359 struct proc *p; 360 { 361 struct ct_softc *sc; 362 u_char stat; 363 int cc, ctlr, slave; 364 365 if (UNIT(dev) >= ct_cd.cd_ndevs || 366 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 367 (sc->sc_flags & CTF_ALIVE) == 0) 368 return (ENXIO); 369 370 if (sc->sc_flags & CTF_OPEN) 371 return (EBUSY); 372 373 ctlr = sc->sc_dev.dv_parent->dv_unit; 374 slave = sc->sc_slave; 375 376 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 377 sc->sc_soptc.nop = C_NOP; 378 sc->sc_soptc.cmd = C_SOPT; 379 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 380 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 381 else 382 sc->sc_soptc.opt = C_SPAR; 383 384 /* 385 * Check the return of hpibsend() and hpibswait(). 386 * Drive could be loading/unloading a tape. If not checked, 387 * driver hangs. 388 */ 389 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 390 if (cc != sizeof(sc->sc_soptc)) 391 return (EBUSY); 392 393 hpibswait(ctlr, slave); 394 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 395 if (cc != sizeof(stat)) 396 return(EBUSY); 397 398 sc->sc_tpr = tprintf_open(p); 399 sc->sc_flags |= CTF_OPEN; 400 return(0); 401 } 402 403 /*ARGSUSED*/ 404 int 405 ctclose(dev, flag, fmt, p) 406 dev_t dev; 407 int flag, fmt; 408 struct proc *p; 409 { 410 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 411 412 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 413 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 414 ctcommand(dev, MTWEOF, 2); 415 ctcommand(dev, MTBSR, 1); 416 if (sc->sc_eofp == EOFS - 1) 417 sc->sc_eofs[EOFS - 1]--; 418 else 419 sc->sc_eofp--; 420 #ifdef DEBUG 421 if(ctdebug & CT_BSF) 422 printf("%s: ctclose backup eofs prt %d blk %d\n", 423 sc->sc_dev.dv_xname, sc->sc_eofp, 424 sc->sc_eofs[sc->sc_eofp]); 425 #endif 426 } 427 if ((minor(dev) & CT_NOREW) == 0) 428 ctcommand(dev, MTREW, 1); 429 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 430 tprintf_close(sc->sc_tpr); 431 #ifdef DEBUG 432 if (ctdebug & CDB_FILES) 433 printf("ctclose: flags %x\n", sc->sc_flags); 434 #endif 435 return(0); /* XXX */ 436 } 437 438 void 439 ctcommand(dev, cmd, cnt) 440 dev_t dev; 441 int cmd; 442 int cnt; 443 { 444 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 445 struct buf *bp = &sc->sc_bufstore; 446 struct buf *nbp = 0; 447 448 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 449 cnt = sc->sc_eofs[EOFS - 1] - cnt; 450 ctcommand(dev, MTREW, 1); 451 ctcommand(dev, MTFSF, cnt); 452 cnt = 2; 453 cmd = MTBSR; 454 } 455 456 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 457 cnt = 1; 458 cmd = MTREW; 459 } 460 461 sc->sc_flags |= CTF_CMD; 462 sc->sc_bp = bp; 463 sc->sc_cmd = cmd; 464 bp->b_dev = dev; 465 if (cmd == MTFSF) { 466 nbp = (struct buf *)geteblk(MAXBSIZE); 467 nbp->b_bshift = intlog2(MAXBSIZE); 468 nbp->b_bsize = MAXBSIZE; 469 bp->b_un.b_addr = nbp->b_un.b_addr; 470 bp->b_bcount = MAXBSIZE; 471 } 472 473 while (cnt-- > 0) { 474 bp->b_flags = B_BUSY; 475 if (cmd == MTBSF) { 476 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 477 sc->sc_eofp--; 478 #ifdef DEBUG 479 if (ctdebug & CT_BSF) 480 printf("%s: backup eof pos %d blk %d\n", 481 sc->sc_dev.dv_xname, sc->sc_eofp, 482 sc->sc_eofs[sc->sc_eofp]); 483 #endif 484 } 485 ctstrategy(bp); 486 iowait(bp); 487 } 488 bp->b_flags = 0; 489 sc->sc_flags &= ~CTF_CMD; 490 if (nbp) 491 brelse(nbp); 492 } 493 494 void 495 ctstrategy(bp) 496 struct buf *bp; 497 { 498 struct buf *dp; 499 int s, unit; 500 struct ct_softc *sc; 501 502 unit = UNIT(bp->b_dev); 503 sc = ct_cd.cd_devs[unit]; 504 505 dp = &sc->sc_tab; 506 bp->b_actf = NULL; 507 s = splbio(); 508 bp->b_actb = dp->b_actb; 509 *(dp->b_actb) = bp; 510 dp->b_actb = &bp->b_actf; 511 if (dp->b_active == 0) { 512 dp->b_active = 1; 513 ctustart(sc); 514 } 515 splx(s); 516 } 517 518 void 519 ctustart(sc) 520 struct ct_softc *sc; 521 { 522 struct buf *bp; 523 524 bp = sc->sc_tab.b_actf; 525 sc->sc_addr = bp->b_un.b_addr; 526 sc->sc_resid = bp->b_bcount; 527 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 528 ctstart(sc); 529 } 530 531 void 532 ctstart(arg) 533 void *arg; 534 { 535 struct ct_softc *sc = arg; 536 struct buf *bp; 537 int i, ctlr, slave; 538 539 ctlr = sc->sc_dev.dv_parent->dv_unit; 540 slave = sc->sc_slave; 541 542 bp = sc->sc_tab.b_actf; 543 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 544 switch(sc->sc_cmd) { 545 case MTFSF: 546 bp->b_flags |= B_READ; 547 goto mustio; 548 549 case MTBSF: 550 goto gotaddr; 551 552 case MTOFFL: 553 sc->sc_blkno = 0; 554 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 555 sc->sc_ul.cmd = C_UNLOAD; 556 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 557 sizeof(sc->sc_ul)); 558 break; 559 560 case MTWEOF: 561 sc->sc_blkno++; 562 sc->sc_flags |= CTF_WRT; 563 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 564 sc->sc_wfm.cmd = C_WFM; 565 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 566 sizeof(sc->sc_wfm)); 567 ctaddeof(sc); 568 break; 569 570 case MTBSR: 571 sc->sc_blkno--; 572 goto gotaddr; 573 574 case MTFSR: 575 sc->sc_blkno++; 576 goto gotaddr; 577 578 case MTREW: 579 sc->sc_blkno = 0; 580 #ifdef DEBUG 581 if(ctdebug & CT_BSF) 582 printf("%s: clearing eofs\n", 583 sc->sc_dev.dv_xname); 584 #endif 585 for (i=0; i<EOFS; i++) 586 sc->sc_eofs[i] = 0; 587 sc->sc_eofp = 0; 588 589 gotaddr: 590 sc->sc_ioc.saddr = C_SADDR; 591 sc->sc_ioc.addr0 = 0; 592 sc->sc_ioc.addr = sc->sc_blkno; 593 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 594 sc->sc_ioc.nop2 = C_NOP; 595 sc->sc_ioc.slen = C_SLEN; 596 sc->sc_ioc.len = 0; 597 sc->sc_ioc.nop3 = C_NOP; 598 sc->sc_ioc.cmd = C_READ; 599 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 600 sizeof(sc->sc_ioc)); 601 break; 602 } 603 } else { 604 mustio: 605 if ((bp->b_flags & B_READ) && 606 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 607 #ifdef DEBUG 608 if (ctdebug & CDB_FILES) 609 printf("ctstart: before flags %x\n", 610 sc->sc_flags); 611 #endif 612 if (sc->sc_flags & CTF_BEOF) { 613 sc->sc_flags &= ~CTF_BEOF; 614 sc->sc_flags |= CTF_AEOF; 615 #ifdef DEBUG 616 if (ctdebug & CDB_FILES) 617 printf("ctstart: after flags %x\n", 618 sc->sc_flags); 619 #endif 620 } 621 bp->b_resid = bp->b_bcount; 622 ctdone(sc, bp); 623 return; 624 } 625 sc->sc_flags |= CTF_IO; 626 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 627 sc->sc_ioc.saddr = C_SADDR; 628 sc->sc_ioc.addr0 = 0; 629 sc->sc_ioc.addr = sc->sc_blkno; 630 sc->sc_ioc.nop2 = C_NOP; 631 sc->sc_ioc.slen = C_SLEN; 632 sc->sc_ioc.len = sc->sc_resid; 633 sc->sc_ioc.nop3 = C_NOP; 634 if (bp->b_flags & B_READ) 635 sc->sc_ioc.cmd = C_READ; 636 else { 637 sc->sc_ioc.cmd = C_WRITE; 638 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 639 } 640 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 641 } 642 hpibawait(ctlr); 643 } 644 645 void 646 ctgo(arg) 647 void *arg; 648 { 649 struct ct_softc *sc = arg; 650 struct buf *bp; 651 int rw; 652 653 bp = sc->sc_tab.b_actf; 654 rw = bp->b_flags & B_READ; 655 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 656 sc->sc_addr, sc->sc_resid, rw, rw != 0); 657 } 658 659 /* 660 * Hideous grue to handle EOF/EOT (mostly for reads) 661 */ 662 void 663 cteof(sc, bp) 664 struct ct_softc *sc; 665 struct buf *bp; 666 { 667 long blks; 668 669 /* 670 * EOT on a write is an error. 671 */ 672 if ((bp->b_flags & B_READ) == 0) { 673 bp->b_resid = bp->b_bcount; 674 bp->b_flags |= B_ERROR; 675 bp->b_error = ENOSPC; 676 sc->sc_flags |= CTF_EOT; 677 return; 678 } 679 /* 680 * Use returned block position to determine how many blocks 681 * we really read and update b_resid. 682 */ 683 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 684 #ifdef DEBUG 685 if (ctdebug & CDB_FILES) 686 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 687 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 688 blks, bp->b_bcount - CTKTOB(blks)); 689 #endif 690 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 691 blks = 0; 692 sc->sc_blkno++; 693 } 694 else { 695 sc->sc_blkno = sc->sc_stat.c_blk; 696 } 697 bp->b_resid = bp->b_bcount - CTKTOB(blks); 698 /* 699 * If we are at physical EOV or were after an EOF, 700 * we are now at logical EOT. 701 */ 702 if ((sc->sc_stat.c_aef & AEF_EOV) || 703 (sc->sc_flags & CTF_AEOF)) { 704 sc->sc_flags |= CTF_EOT; 705 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 706 } 707 /* 708 * If we were before an EOF or we have just completed a FSF, 709 * we are now after EOF. 710 */ 711 else if ((sc->sc_flags & CTF_BEOF) || 712 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 713 sc->sc_flags |= CTF_AEOF; 714 sc->sc_flags &= ~CTF_BEOF; 715 } 716 /* 717 * Otherwise if we read something we are now before EOF 718 * (and no longer after EOF). 719 */ 720 else if (blks) { 721 sc->sc_flags |= CTF_BEOF; 722 sc->sc_flags &= ~CTF_AEOF; 723 } 724 /* 725 * Finally, if we didn't read anything we just passed an EOF 726 */ 727 else 728 sc->sc_flags |= CTF_AEOF; 729 #ifdef DEBUG 730 if (ctdebug & CDB_FILES) 731 printf("cteof: leaving flags %x\n", sc->sc_flags); 732 #endif 733 } 734 735 /* ARGSUSED */ 736 void 737 ctintr(arg) 738 void *arg; 739 { 740 struct ct_softc *sc = arg; 741 struct buf *bp; 742 u_char stat; 743 int ctlr, slave, unit; 744 745 ctlr = sc->sc_dev.dv_parent->dv_unit; 746 slave = sc->sc_slave; 747 unit = sc->sc_dev.dv_unit; 748 749 bp = sc->sc_tab.b_actf; 750 if (bp == NULL) { 751 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 752 return; 753 } 754 if (sc->sc_flags & CTF_IO) { 755 sc->sc_flags &= ~CTF_IO; 756 if (hpibustart(ctlr)) 757 ctgo(sc); 758 return; 759 } 760 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 761 if (hpibpptest(ctlr, slave) == 0) { 762 sc->sc_flags |= CTF_STATWAIT; 763 hpibawait(ctlr); 764 return; 765 } 766 } else 767 sc->sc_flags &= ~CTF_STATWAIT; 768 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 769 #ifdef DEBUG 770 if (ctdebug & CDB_FILES) 771 printf("ctintr: before flags %x\n", sc->sc_flags); 772 #endif 773 if (stat) { 774 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 775 sc->sc_rsc.cmd = C_STATUS; 776 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 777 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 778 sizeof(sc->sc_stat)); 779 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 780 #ifdef DEBUG 781 if (ctdebug & CDB_FILES) 782 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 783 stat, sc->sc_stat.c_aef, 784 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 785 #endif 786 if (stat == 0) { 787 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 788 cteof(sc, bp); 789 ctaddeof(sc); 790 goto done; 791 } 792 if (sc->sc_stat.c_fef & FEF_PF) { 793 ctreset(sc); 794 ctstart(sc); 795 return; 796 } 797 if (sc->sc_stat.c_fef & FEF_REXMT) { 798 ctstart(sc); 799 return; 800 } 801 if (sc->sc_stat.c_aef & 0x5800) { 802 if (sc->sc_stat.c_aef & 0x4000) 803 tprintf(sc->sc_tpr, 804 "%s: uninitialized media\n", 805 sc->sc_dev.dv_xname); 806 if (sc->sc_stat.c_aef & 0x1000) 807 tprintf(sc->sc_tpr, 808 "%s: not ready\n", 809 sc->sc_dev.dv_xname); 810 if (sc->sc_stat.c_aef & 0x0800) 811 tprintf(sc->sc_tpr, 812 "%s: write protect\n", 813 sc->sc_dev.dv_xname); 814 } else { 815 printf("%s err: v%d u%d ru%d bn%ld, ", 816 sc->sc_dev.dv_xname, 817 (sc->sc_stat.c_vu>>4)&0xF, 818 sc->sc_stat.c_vu&0xF, 819 sc->sc_stat.c_pend, 820 sc->sc_stat.c_blk); 821 printf("R0x%x F0x%x A0x%x I0x%x\n", 822 sc->sc_stat.c_ref, 823 sc->sc_stat.c_fef, 824 sc->sc_stat.c_aef, 825 sc->sc_stat.c_ief); 826 } 827 } else 828 printf("%s: request status failed\n", 829 sc->sc_dev.dv_xname); 830 bp->b_flags |= B_ERROR; 831 bp->b_error = EIO; 832 goto done; 833 } else 834 bp->b_resid = 0; 835 if (sc->sc_flags & CTF_CMD) { 836 switch (sc->sc_cmd) { 837 case MTFSF: 838 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 839 sc->sc_blkno += CTBTOK(sc->sc_resid); 840 ctstart(sc); 841 return; 842 case MTBSF: 843 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 844 break; 845 case MTBSR: 846 sc->sc_flags &= ~CTF_BEOF; 847 if (sc->sc_flags & CTF_EOT) { 848 sc->sc_flags |= CTF_AEOF; 849 sc->sc_flags &= ~CTF_EOT; 850 } else if (sc->sc_flags & CTF_AEOF) { 851 sc->sc_flags |= CTF_BEOF; 852 sc->sc_flags &= ~CTF_AEOF; 853 } 854 break; 855 case MTWEOF: 856 sc->sc_flags &= ~CTF_BEOF; 857 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 858 sc->sc_flags |= CTF_EOT; 859 sc->sc_flags &= ~CTF_AEOF; 860 } else 861 sc->sc_flags |= CTF_AEOF; 862 break; 863 case MTREW: 864 case MTOFFL: 865 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 866 break; 867 } 868 } else { 869 sc->sc_flags &= ~CTF_AEOF; 870 sc->sc_blkno += CTBTOK(sc->sc_resid); 871 } 872 done: 873 #ifdef DEBUG 874 if (ctdebug & CDB_FILES) 875 printf("ctintr: after flags %x\n", sc->sc_flags); 876 #endif 877 ctdone(sc, bp); 878 } 879 880 void 881 ctdone(sc, bp) 882 struct ct_softc *sc; 883 struct buf *bp; 884 { 885 struct buf *dp; 886 887 if ((dp = bp->b_actf) != NULL) 888 dp->b_actb = bp->b_actb; 889 else 890 sc->sc_tab.b_actb = bp->b_actb; 891 *bp->b_actb = dp; 892 biodone(bp); 893 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 894 if (sc->sc_tab.b_actf == NULL) { 895 sc->sc_tab.b_active = 0; 896 return; 897 } 898 ctustart(sc); 899 } 900 901 int 902 ctread(dev, uio, flags) 903 dev_t dev; 904 struct uio *uio; 905 int flags; 906 { 907 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 908 } 909 910 int 911 ctwrite(dev, uio, flags) 912 dev_t dev; 913 struct uio *uio; 914 int flags; 915 { 916 /* XXX: check for hardware write-protect? */ 917 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 918 } 919 920 /*ARGSUSED*/ 921 int 922 ctioctl(dev, cmd, data, flag, p) 923 dev_t dev; 924 u_long cmd; 925 int flag; 926 caddr_t data; 927 struct proc *p; 928 { 929 struct mtop *op; 930 int cnt; 931 932 switch (cmd) { 933 934 case MTIOCTOP: 935 op = (struct mtop *)data; 936 switch(op->mt_op) { 937 938 case MTWEOF: 939 case MTFSF: 940 case MTBSR: 941 case MTBSF: 942 case MTFSR: 943 cnt = op->mt_count; 944 break; 945 946 case MTREW: 947 case MTOFFL: 948 cnt = 1; 949 break; 950 951 default: 952 return(EINVAL); 953 } 954 ctcommand(dev, op->mt_op, cnt); 955 break; 956 957 case MTIOCGET: 958 break; 959 960 default: 961 return(EINVAL); 962 } 963 return(0); 964 } 965 966 /* ARGSUSED */ 967 int 968 ctdump(dev, blkno, va, size) 969 dev_t dev; 970 daddr_t blkno; 971 caddr_t va; 972 size_t size; 973 { 974 975 return (ENODEV); 976 } 977 978 void 979 ctaddeof(sc) 980 struct ct_softc *sc; 981 { 982 983 if (sc->sc_eofp == EOFS - 1) 984 sc->sc_eofs[EOFS - 1]++; 985 else { 986 sc->sc_eofp++; 987 if (sc->sc_eofp == EOFS - 1) 988 sc->sc_eofs[EOFS - 1] = EOFS; 989 else 990 /* save blkno */ 991 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 992 } 993 #ifdef DEBUG 994 if (ctdebug & CT_BSF) 995 printf("%s: add eof pos %d blk %d\n", 996 sc->sc_dev.dv_xname, sc->sc_eofp, 997 sc->sc_eofs[sc->sc_eofp]); 998 #endif 999 } 1000
Indexes created Mon Oct 20 11:09:49 GMT 2025