ct.c revision 1.35
1 /* $NetBSD: ct.c,v 1.35 2003/06/29 22:28:15 fvdl 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/cdefs.h> 89 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.35 2003/06/29 22:28:15 fvdl Exp $"); 90 91 #include <sys/param.h> 92 #include <sys/systm.h> 93 #include <sys/buf.h> 94 #include <sys/conf.h> 95 #include <sys/device.h> 96 #include <sys/ioctl.h> 97 #include <sys/mtio.h> 98 #include <sys/proc.h> 99 #include <sys/tprintf.h> 100 101 #include <hp300/dev/hpibvar.h> 102 103 #include <hp300/dev/ctreg.h> 104 105 /* number of eof marks to remember */ 106 #define EOFS 128 107 108 struct ct_softc { 109 struct device sc_dev; 110 int sc_slave; /* HP-IB slave ID */ 111 int sc_punit; /* physical unit */ 112 struct ct_iocmd sc_ioc; 113 struct ct_rscmd sc_rsc; 114 struct ct_stat sc_stat; 115 struct ct_ssmcmd sc_ssmc; 116 struct ct_srcmd sc_src; 117 struct ct_soptcmd sc_soptc; 118 struct ct_ulcmd sc_ul; 119 struct ct_wfmcmd sc_wfm; 120 struct ct_clearcmd sc_clear; 121 struct bufq_state sc_tab; 122 int sc_active; 123 struct buf *sc_bp; 124 struct buf sc_bufstore; /* XXX */ 125 int sc_blkno; 126 int sc_cmd; 127 int sc_resid; 128 char *sc_addr; 129 int sc_flags; 130 short sc_type; 131 tpr_t sc_tpr; 132 struct hpibqueue sc_hq; /* entry on hpib job queue */ 133 int sc_eofp; 134 int sc_eofs[EOFS]; 135 }; 136 137 /* flags */ 138 #define CTF_OPEN 0x01 139 #define CTF_ALIVE 0x02 140 #define CTF_WRT 0x04 141 #define CTF_CMD 0x08 142 #define CTF_IO 0x10 143 #define CTF_BEOF 0x20 144 #define CTF_AEOF 0x40 145 #define CTF_EOT 0x80 146 #define CTF_STATWAIT 0x100 147 #define CTF_CANSTREAM 0x200 148 #define CTF_WRTTN 0x400 149 150 int ctmatch __P((struct device *, struct cfdata *, void *)); 151 void ctattach __P((struct device *, struct device *, void *)); 152 153 CFATTACH_DECL(ct, sizeof(struct ct_softc), 154 ctmatch, ctattach, NULL, NULL); 155 156 extern struct cfdriver ct_cd; 157 158 dev_type_open(ctopen); 159 dev_type_close(ctclose); 160 dev_type_read(ctread); 161 dev_type_write(ctwrite); 162 dev_type_ioctl(ctioctl); 163 dev_type_strategy(ctstrategy); 164 165 const struct bdevsw ct_bdevsw = { 166 ctopen, ctclose, ctstrategy, ctioctl, nodump, nosize, D_TAPE 167 }; 168 169 const struct cdevsw ct_cdevsw = { 170 ctopen, ctclose, ctread, ctwrite, ctioctl, 171 nostop, notty, nopoll, nommap, nokqfilter, D_TAPE 172 }; 173 174 int ctident __P((struct device *, struct ct_softc *, 175 struct hpibbus_attach_args *)); 176 177 void ctreset __P((struct ct_softc *)); 178 void ctaddeof __P((struct ct_softc *)); 179 void ctustart __P((struct ct_softc *)); 180 void cteof __P((struct ct_softc *, struct buf *)); 181 void ctdone __P((struct ct_softc *, struct buf *)); 182 183 void ctstart __P((void *)); 184 void ctgo __P((void *)); 185 void ctintr __P((void *)); 186 187 void ctcommand __P((dev_t, int, int)); 188 189 struct ctinfo { 190 short hwid; 191 short punit; 192 char *desc; 193 } ctinfo[] = { 194 { CT7946ID, 1, "7946A" }, 195 { CT7912PID, 1, "7912P" }, 196 { CT7914PID, 1, "7914P" }, 197 { CT9144ID, 0, "9144" }, 198 { CT9145ID, 0, "9145" }, 199 { CT35401ID, 0, "35401A"}, 200 }; 201 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 202 203 #define CT_NOREW 4 204 #define CT_STREAM 8 205 #define UNIT(x) (minor(x) & 3) 206 #define ctpunit(x) ((x) & 7) 207 208 #ifdef DEBUG 209 int ctdebug = 0; 210 #define CDB_FILES 0x01 211 #define CT_BSF 0x02 212 #endif 213 214 int 215 ctmatch(parent, match, aux) 216 struct device *parent; 217 struct cfdata *match; 218 void *aux; 219 { 220 struct hpibbus_attach_args *ha = aux; 221 222 return (ctident(parent, NULL, ha)); 223 } 224 225 void 226 ctattach(parent, self, aux) 227 struct device *parent, *self; 228 void *aux; 229 { 230 struct ct_softc *sc = (struct ct_softc *)self; 231 struct hpibbus_attach_args *ha = aux; 232 233 if (ctident(parent, sc, ha) == 0) { 234 printf("\n%s: didn't respond to describe command!\n", 235 sc->sc_dev.dv_xname); 236 return; 237 } 238 239 sc->sc_slave = ha->ha_slave; 240 sc->sc_punit = ha->ha_punit; 241 242 bufq_alloc(&sc->sc_tab, BUFQ_FCFS); 243 244 /* Initialize hpib job queue entry. */ 245 sc->sc_hq.hq_softc = sc; 246 sc->sc_hq.hq_slave = sc->sc_slave; 247 sc->sc_hq.hq_start = ctstart; 248 sc->sc_hq.hq_go = ctgo; 249 sc->sc_hq.hq_intr = ctintr; 250 251 ctreset(sc); 252 sc->sc_flags |= CTF_ALIVE; 253 } 254 255 int 256 ctident(parent, sc, ha) 257 struct device *parent; 258 struct ct_softc *sc; 259 struct hpibbus_attach_args *ha; 260 { 261 struct ct_describe desc; 262 u_char stat, cmd[3]; 263 char name[7]; 264 int i, id, n, type, canstream; 265 266 type = canstream = 0; 267 268 /* Verify that we have a CS80 device. */ 269 if ((ha->ha_id & 0x200) == 0) 270 return (0); 271 272 /* Is it one of the tapes we support? */ 273 for (id = 0; id < nctinfo; id++) 274 if (ha->ha_id == ctinfo[id].hwid) 275 break; 276 if (id == nctinfo) 277 return (0); 278 279 ha->ha_punit = ctinfo[id].punit; 280 281 /* 282 * So far, so good. Get drive parameters. Note command 283 * is always issued to unit 0. 284 */ 285 cmd[0] = C_SUNIT(0); 286 cmd[1] = C_SVOL(0); 287 cmd[2] = C_DESC; 288 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 289 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 290 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 291 292 memset(name, 0, sizeof(name)); 293 if (stat == 0) { 294 n = desc.d_name; 295 for (i = 5; i >= 0; i--) { 296 name[i] = (n & 0xf) + '0'; 297 n >>= 4; 298 } 299 } 300 301 switch (ha->ha_id) { 302 case CT7946ID: 303 if (memcmp(name, "079450", 6) == 0) 304 return (0); /* not really a 7946 */ 305 /* fall into... */ 306 case CT9144ID: 307 case CT9145ID: 308 case CT35401ID: 309 type = CT9144; 310 canstream = 1; 311 break; 312 313 case CT7912PID: 314 case CT7914PID: 315 type = CT88140; 316 break; 317 } 318 319 if (sc != NULL) { 320 sc->sc_type = type; 321 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 322 printf(": %s %stape\n", ctinfo[id].desc, 323 canstream ? "streaming " : ""); 324 } 325 326 return (1); 327 } 328 329 void 330 ctreset(sc) 331 struct ct_softc *sc; 332 { 333 int ctlr, slave; 334 u_char stat; 335 336 ctlr = sc->sc_dev.dv_parent->dv_unit; 337 slave = sc->sc_slave; 338 339 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 340 sc->sc_clear.cmd = C_CLEAR; 341 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 342 hpibswait(ctlr, slave); 343 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 344 345 sc->sc_src.unit = C_SUNIT(CTCTLR); 346 sc->sc_src.nop = C_NOP; 347 sc->sc_src.cmd = C_SREL; 348 sc->sc_src.param = C_REL; 349 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 350 hpibswait(ctlr, slave); 351 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 352 353 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 354 sc->sc_ssmc.cmd = C_SSM; 355 sc->sc_ssmc.refm = REF_MASK; 356 sc->sc_ssmc.fefm = FEF_MASK; 357 sc->sc_ssmc.aefm = AEF_MASK; 358 sc->sc_ssmc.iefm = IEF_MASK; 359 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 360 hpibswait(ctlr, slave); 361 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 362 363 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 364 sc->sc_soptc.nop = C_NOP; 365 sc->sc_soptc.cmd = C_SOPT; 366 sc->sc_soptc.opt = C_SPAR; 367 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 368 hpibswait(ctlr, slave); 369 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 370 } 371 372 /*ARGSUSED*/ 373 int 374 ctopen(dev, flag, type, p) 375 dev_t dev; 376 int flag, type; 377 struct proc *p; 378 { 379 struct ct_softc *sc; 380 u_char stat; 381 int cc, ctlr, slave; 382 383 if (UNIT(dev) >= ct_cd.cd_ndevs || 384 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 385 (sc->sc_flags & CTF_ALIVE) == 0) 386 return (ENXIO); 387 388 if (sc->sc_flags & CTF_OPEN) 389 return (EBUSY); 390 391 ctlr = sc->sc_dev.dv_parent->dv_unit; 392 slave = sc->sc_slave; 393 394 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 395 sc->sc_soptc.nop = C_NOP; 396 sc->sc_soptc.cmd = C_SOPT; 397 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 398 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 399 else 400 sc->sc_soptc.opt = C_SPAR; 401 402 /* 403 * Check the return of hpibsend() and hpibswait(). 404 * Drive could be loading/unloading a tape. If not checked, 405 * driver hangs. 406 */ 407 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 408 if (cc != sizeof(sc->sc_soptc)) 409 return (EBUSY); 410 411 hpibswait(ctlr, slave); 412 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 413 if (cc != sizeof(stat)) 414 return(EBUSY); 415 416 sc->sc_tpr = tprintf_open(p); 417 sc->sc_flags |= CTF_OPEN; 418 return(0); 419 } 420 421 /*ARGSUSED*/ 422 int 423 ctclose(dev, flag, fmt, p) 424 dev_t dev; 425 int flag, fmt; 426 struct proc *p; 427 { 428 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 429 430 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 431 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 432 ctcommand(dev, MTWEOF, 2); 433 ctcommand(dev, MTBSR, 1); 434 if (sc->sc_eofp == EOFS - 1) 435 sc->sc_eofs[EOFS - 1]--; 436 else 437 sc->sc_eofp--; 438 #ifdef DEBUG 439 if(ctdebug & CT_BSF) 440 printf("%s: ctclose backup eofs prt %d blk %d\n", 441 sc->sc_dev.dv_xname, sc->sc_eofp, 442 sc->sc_eofs[sc->sc_eofp]); 443 #endif 444 } 445 if ((minor(dev) & CT_NOREW) == 0) 446 ctcommand(dev, MTREW, 1); 447 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 448 tprintf_close(sc->sc_tpr); 449 #ifdef DEBUG 450 if (ctdebug & CDB_FILES) 451 printf("ctclose: flags %x\n", sc->sc_flags); 452 #endif 453 return(0); /* XXX */ 454 } 455 456 void 457 ctcommand(dev, cmd, cnt) 458 dev_t dev; 459 int cmd; 460 int cnt; 461 { 462 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 463 struct buf *bp = &sc->sc_bufstore; 464 struct buf *nbp = 0; 465 466 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 467 cnt = sc->sc_eofs[EOFS - 1] - cnt; 468 ctcommand(dev, MTREW, 1); 469 ctcommand(dev, MTFSF, cnt); 470 cnt = 2; 471 cmd = MTBSR; 472 } 473 474 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 475 cnt = 1; 476 cmd = MTREW; 477 } 478 479 sc->sc_flags |= CTF_CMD; 480 sc->sc_bp = bp; 481 sc->sc_cmd = cmd; 482 bp->b_dev = dev; 483 if (cmd == MTFSF) { 484 nbp = (struct buf *)geteblk(MAXBSIZE); 485 bp->b_data = nbp->b_data; 486 bp->b_bcount = MAXBSIZE; 487 } 488 489 while (cnt-- > 0) { 490 bp->b_flags = B_BUSY; 491 if (cmd == MTBSF) { 492 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 493 sc->sc_eofp--; 494 #ifdef DEBUG 495 if (ctdebug & CT_BSF) 496 printf("%s: backup eof pos %d blk %d\n", 497 sc->sc_dev.dv_xname, sc->sc_eofp, 498 sc->sc_eofs[sc->sc_eofp]); 499 #endif 500 } 501 ctstrategy(bp); 502 biowait(bp); 503 } 504 bp->b_flags = 0; 505 sc->sc_flags &= ~CTF_CMD; 506 if (nbp) 507 brelse(nbp); 508 } 509 510 void 511 ctstrategy(bp) 512 struct buf *bp; 513 { 514 int s, unit; 515 struct ct_softc *sc; 516 517 unit = UNIT(bp->b_dev); 518 sc = ct_cd.cd_devs[unit]; 519 520 s = splbio(); 521 BUFQ_PUT(&sc->sc_tab, bp); 522 if (sc->sc_active == 0) { 523 sc->sc_active = 1; 524 ctustart(sc); 525 } 526 splx(s); 527 } 528 529 void 530 ctustart(sc) 531 struct ct_softc *sc; 532 { 533 struct buf *bp; 534 535 bp = BUFQ_PEEK(&sc->sc_tab); 536 sc->sc_addr = bp->b_data; 537 sc->sc_resid = bp->b_bcount; 538 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 539 ctstart(sc); 540 } 541 542 void 543 ctstart(arg) 544 void *arg; 545 { 546 struct ct_softc *sc = arg; 547 struct buf *bp; 548 int i, ctlr, slave; 549 550 ctlr = sc->sc_dev.dv_parent->dv_unit; 551 slave = sc->sc_slave; 552 553 bp = BUFQ_PEEK(&sc->sc_tab); 554 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 555 switch(sc->sc_cmd) { 556 case MTFSF: 557 bp->b_flags |= B_READ; 558 goto mustio; 559 560 case MTBSF: 561 goto gotaddr; 562 563 case MTOFFL: 564 sc->sc_blkno = 0; 565 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 566 sc->sc_ul.cmd = C_UNLOAD; 567 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 568 sizeof(sc->sc_ul)); 569 break; 570 571 case MTWEOF: 572 sc->sc_blkno++; 573 sc->sc_flags |= CTF_WRT; 574 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 575 sc->sc_wfm.cmd = C_WFM; 576 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 577 sizeof(sc->sc_wfm)); 578 ctaddeof(sc); 579 break; 580 581 case MTBSR: 582 sc->sc_blkno--; 583 goto gotaddr; 584 585 case MTFSR: 586 sc->sc_blkno++; 587 goto gotaddr; 588 589 case MTREW: 590 sc->sc_blkno = 0; 591 #ifdef DEBUG 592 if(ctdebug & CT_BSF) 593 printf("%s: clearing eofs\n", 594 sc->sc_dev.dv_xname); 595 #endif 596 for (i=0; i<EOFS; i++) 597 sc->sc_eofs[i] = 0; 598 sc->sc_eofp = 0; 599 600 gotaddr: 601 sc->sc_ioc.saddr = C_SADDR; 602 sc->sc_ioc.addr0 = 0; 603 sc->sc_ioc.addr = sc->sc_blkno; 604 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 605 sc->sc_ioc.nop2 = C_NOP; 606 sc->sc_ioc.slen = C_SLEN; 607 sc->sc_ioc.len = 0; 608 sc->sc_ioc.nop3 = C_NOP; 609 sc->sc_ioc.cmd = C_READ; 610 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 611 sizeof(sc->sc_ioc)); 612 break; 613 } 614 } else { 615 mustio: 616 if ((bp->b_flags & B_READ) && 617 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 618 #ifdef DEBUG 619 if (ctdebug & CDB_FILES) 620 printf("ctstart: before flags %x\n", 621 sc->sc_flags); 622 #endif 623 if (sc->sc_flags & CTF_BEOF) { 624 sc->sc_flags &= ~CTF_BEOF; 625 sc->sc_flags |= CTF_AEOF; 626 #ifdef DEBUG 627 if (ctdebug & CDB_FILES) 628 printf("ctstart: after flags %x\n", 629 sc->sc_flags); 630 #endif 631 } 632 bp->b_resid = bp->b_bcount; 633 ctdone(sc, bp); 634 return; 635 } 636 sc->sc_flags |= CTF_IO; 637 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 638 sc->sc_ioc.saddr = C_SADDR; 639 sc->sc_ioc.addr0 = 0; 640 sc->sc_ioc.addr = sc->sc_blkno; 641 sc->sc_ioc.nop2 = C_NOP; 642 sc->sc_ioc.slen = C_SLEN; 643 sc->sc_ioc.len = sc->sc_resid; 644 sc->sc_ioc.nop3 = C_NOP; 645 if (bp->b_flags & B_READ) 646 sc->sc_ioc.cmd = C_READ; 647 else { 648 sc->sc_ioc.cmd = C_WRITE; 649 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 650 } 651 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 652 } 653 hpibawait(ctlr); 654 } 655 656 void 657 ctgo(arg) 658 void *arg; 659 { 660 struct ct_softc *sc = arg; 661 struct buf *bp; 662 int rw; 663 664 bp = BUFQ_PEEK(&sc->sc_tab); 665 rw = bp->b_flags & B_READ; 666 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 667 sc->sc_addr, sc->sc_resid, rw, rw != 0); 668 } 669 670 /* 671 * Hideous grue to handle EOF/EOT (mostly for reads) 672 */ 673 void 674 cteof(sc, bp) 675 struct ct_softc *sc; 676 struct buf *bp; 677 { 678 long blks; 679 680 /* 681 * EOT on a write is an error. 682 */ 683 if ((bp->b_flags & B_READ) == 0) { 684 bp->b_resid = bp->b_bcount; 685 bp->b_flags |= B_ERROR; 686 bp->b_error = ENOSPC; 687 sc->sc_flags |= CTF_EOT; 688 return; 689 } 690 /* 691 * Use returned block position to determine how many blocks 692 * we really read and update b_resid. 693 */ 694 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 695 #ifdef DEBUG 696 if (ctdebug & CDB_FILES) 697 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 698 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 699 blks, bp->b_bcount - CTKTOB(blks)); 700 #endif 701 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 702 blks = 0; 703 sc->sc_blkno++; 704 } 705 else { 706 sc->sc_blkno = sc->sc_stat.c_blk; 707 } 708 bp->b_resid = bp->b_bcount - CTKTOB(blks); 709 /* 710 * If we are at physical EOV or were after an EOF, 711 * we are now at logical EOT. 712 */ 713 if ((sc->sc_stat.c_aef & AEF_EOV) || 714 (sc->sc_flags & CTF_AEOF)) { 715 sc->sc_flags |= CTF_EOT; 716 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 717 } 718 /* 719 * If we were before an EOF or we have just completed a FSF, 720 * we are now after EOF. 721 */ 722 else if ((sc->sc_flags & CTF_BEOF) || 723 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 724 sc->sc_flags |= CTF_AEOF; 725 sc->sc_flags &= ~CTF_BEOF; 726 } 727 /* 728 * Otherwise if we read something we are now before EOF 729 * (and no longer after EOF). 730 */ 731 else if (blks) { 732 sc->sc_flags |= CTF_BEOF; 733 sc->sc_flags &= ~CTF_AEOF; 734 } 735 /* 736 * Finally, if we didn't read anything we just passed an EOF 737 */ 738 else 739 sc->sc_flags |= CTF_AEOF; 740 #ifdef DEBUG 741 if (ctdebug & CDB_FILES) 742 printf("cteof: leaving flags %x\n", sc->sc_flags); 743 #endif 744 } 745 746 /* ARGSUSED */ 747 void 748 ctintr(arg) 749 void *arg; 750 { 751 struct ct_softc *sc = arg; 752 struct buf *bp; 753 u_char stat; 754 int ctlr, slave, unit; 755 756 ctlr = sc->sc_dev.dv_parent->dv_unit; 757 slave = sc->sc_slave; 758 unit = sc->sc_dev.dv_unit; 759 760 bp = BUFQ_PEEK(&sc->sc_tab); 761 if (bp == NULL) { 762 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 763 return; 764 } 765 if (sc->sc_flags & CTF_IO) { 766 sc->sc_flags &= ~CTF_IO; 767 if (hpibustart(ctlr)) 768 ctgo(sc); 769 return; 770 } 771 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 772 if (hpibpptest(ctlr, slave) == 0) { 773 sc->sc_flags |= CTF_STATWAIT; 774 hpibawait(ctlr); 775 return; 776 } 777 } else 778 sc->sc_flags &= ~CTF_STATWAIT; 779 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 780 #ifdef DEBUG 781 if (ctdebug & CDB_FILES) 782 printf("ctintr: before flags %x\n", sc->sc_flags); 783 #endif 784 if (stat) { 785 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 786 sc->sc_rsc.cmd = C_STATUS; 787 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 788 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 789 sizeof(sc->sc_stat)); 790 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 791 #ifdef DEBUG 792 if (ctdebug & CDB_FILES) 793 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 794 stat, sc->sc_stat.c_aef, 795 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 796 #endif 797 if (stat == 0) { 798 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 799 cteof(sc, bp); 800 ctaddeof(sc); 801 goto done; 802 } 803 if (sc->sc_stat.c_fef & FEF_PF) { 804 ctreset(sc); 805 ctstart(sc); 806 return; 807 } 808 if (sc->sc_stat.c_fef & FEF_REXMT) { 809 ctstart(sc); 810 return; 811 } 812 if (sc->sc_stat.c_aef & 0x5800) { 813 if (sc->sc_stat.c_aef & 0x4000) 814 tprintf(sc->sc_tpr, 815 "%s: uninitialized media\n", 816 sc->sc_dev.dv_xname); 817 if (sc->sc_stat.c_aef & 0x1000) 818 tprintf(sc->sc_tpr, 819 "%s: not ready\n", 820 sc->sc_dev.dv_xname); 821 if (sc->sc_stat.c_aef & 0x0800) 822 tprintf(sc->sc_tpr, 823 "%s: write protect\n", 824 sc->sc_dev.dv_xname); 825 } else { 826 printf("%s err: v%d u%d ru%d bn%ld, ", 827 sc->sc_dev.dv_xname, 828 (sc->sc_stat.c_vu>>4)&0xF, 829 sc->sc_stat.c_vu&0xF, 830 sc->sc_stat.c_pend, 831 sc->sc_stat.c_blk); 832 printf("R0x%x F0x%x A0x%x I0x%x\n", 833 sc->sc_stat.c_ref, 834 sc->sc_stat.c_fef, 835 sc->sc_stat.c_aef, 836 sc->sc_stat.c_ief); 837 } 838 } else 839 printf("%s: request status failed\n", 840 sc->sc_dev.dv_xname); 841 bp->b_flags |= B_ERROR; 842 bp->b_error = EIO; 843 goto done; 844 } else 845 bp->b_resid = 0; 846 if (sc->sc_flags & CTF_CMD) { 847 switch (sc->sc_cmd) { 848 case MTFSF: 849 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 850 sc->sc_blkno += CTBTOK(sc->sc_resid); 851 ctstart(sc); 852 return; 853 case MTBSF: 854 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 855 break; 856 case MTBSR: 857 sc->sc_flags &= ~CTF_BEOF; 858 if (sc->sc_flags & CTF_EOT) { 859 sc->sc_flags |= CTF_AEOF; 860 sc->sc_flags &= ~CTF_EOT; 861 } else if (sc->sc_flags & CTF_AEOF) { 862 sc->sc_flags |= CTF_BEOF; 863 sc->sc_flags &= ~CTF_AEOF; 864 } 865 break; 866 case MTWEOF: 867 sc->sc_flags &= ~CTF_BEOF; 868 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 869 sc->sc_flags |= CTF_EOT; 870 sc->sc_flags &= ~CTF_AEOF; 871 } else 872 sc->sc_flags |= CTF_AEOF; 873 break; 874 case MTREW: 875 case MTOFFL: 876 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 877 break; 878 } 879 } else { 880 sc->sc_flags &= ~CTF_AEOF; 881 sc->sc_blkno += CTBTOK(sc->sc_resid); 882 } 883 done: 884 #ifdef DEBUG 885 if (ctdebug & CDB_FILES) 886 printf("ctintr: after flags %x\n", sc->sc_flags); 887 #endif 888 ctdone(sc, bp); 889 } 890 891 void 892 ctdone(sc, bp) 893 struct ct_softc *sc; 894 struct buf *bp; 895 { 896 897 (void)BUFQ_GET(&sc->sc_tab); 898 biodone(bp); 899 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 900 if (BUFQ_PEEK(&sc->sc_tab) == NULL) { 901 sc->sc_active = 0; 902 return; 903 } 904 ctustart(sc); 905 } 906 907 int 908 ctread(dev, uio, flags) 909 dev_t dev; 910 struct uio *uio; 911 int flags; 912 { 913 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 914 } 915 916 int 917 ctwrite(dev, uio, flags) 918 dev_t dev; 919 struct uio *uio; 920 int flags; 921 { 922 /* XXX: check for hardware write-protect? */ 923 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 924 } 925 926 /*ARGSUSED*/ 927 int 928 ctioctl(dev, cmd, data, flag, p) 929 dev_t dev; 930 u_long cmd; 931 int flag; 932 caddr_t data; 933 struct proc *p; 934 { 935 struct mtop *op; 936 int cnt; 937 938 switch (cmd) { 939 940 case MTIOCTOP: 941 op = (struct mtop *)data; 942 switch(op->mt_op) { 943 944 case MTWEOF: 945 case MTFSF: 946 case MTBSR: 947 case MTBSF: 948 case MTFSR: 949 cnt = op->mt_count; 950 break; 951 952 case MTREW: 953 case MTOFFL: 954 cnt = 1; 955 break; 956 957 default: 958 return(EINVAL); 959 } 960 ctcommand(dev, op->mt_op, cnt); 961 break; 962 963 case MTIOCGET: 964 break; 965 966 default: 967 return(EINVAL); 968 } 969 return(0); 970 } 971 972 void 973 ctaddeof(sc) 974 struct ct_softc *sc; 975 { 976 977 if (sc->sc_eofp == EOFS - 1) 978 sc->sc_eofs[EOFS - 1]++; 979 else { 980 sc->sc_eofp++; 981 if (sc->sc_eofp == EOFS - 1) 982 sc->sc_eofs[EOFS - 1] = EOFS; 983 else 984 /* save blkno */ 985 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 986 } 987 #ifdef DEBUG 988 if (ctdebug & CT_BSF) 989 printf("%s: add eof pos %d blk %d\n", 990 sc->sc_dev.dv_xname, sc->sc_eofp, 991 sc->sc_eofs[sc->sc_eofp]); 992 #endif 993 } 994
Indexes created Mon Sep 22 13:09:51 GMT 2025