ct.c revision 1.37
1 /* $NetBSD: ct.c,v 1.37 2003/11/17 14:37:59 tsutsui 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. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)ct.c 8.2 (Berkeley) 1/12/94 68 */ 69 70 /* 71 * CS80 cartridge tape driver (9144, 88140, 9145) 72 * 73 * Reminder: 74 * C_CC bit (character count option) when used in the CS/80 command 75 * 'set options' will cause the tape not to stream. 76 * 77 * TODO: 78 * make filesystem compatible 79 * make block mode work according to mtio(4) spec. (if possible) 80 * merge with cs80 disk driver 81 * finish support of 9145 82 */ 83 84 #include <sys/cdefs.h> 85 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.37 2003/11/17 14:37:59 tsutsui Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/buf.h> 90 #include <sys/conf.h> 91 #include <sys/device.h> 92 #include <sys/ioctl.h> 93 #include <sys/mtio.h> 94 #include <sys/proc.h> 95 #include <sys/tprintf.h> 96 97 #include <hp300/dev/hpibvar.h> 98 99 #include <hp300/dev/ctreg.h> 100 101 /* number of eof marks to remember */ 102 #define EOFS 128 103 104 struct ct_softc { 105 struct device sc_dev; 106 int sc_slave; /* HP-IB slave ID */ 107 int sc_punit; /* physical unit */ 108 struct ct_iocmd sc_ioc; 109 struct ct_rscmd sc_rsc; 110 struct ct_stat sc_stat; 111 struct ct_ssmcmd sc_ssmc; 112 struct ct_srcmd sc_src; 113 struct ct_soptcmd sc_soptc; 114 struct ct_ulcmd sc_ul; 115 struct ct_wfmcmd sc_wfm; 116 struct ct_clearcmd sc_clear; 117 struct bufq_state sc_tab; 118 int sc_active; 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 CFATTACH_DECL(ct, sizeof(struct ct_softc), 150 ctmatch, ctattach, NULL, NULL); 151 152 extern struct cfdriver ct_cd; 153 154 dev_type_open(ctopen); 155 dev_type_close(ctclose); 156 dev_type_read(ctread); 157 dev_type_write(ctwrite); 158 dev_type_ioctl(ctioctl); 159 dev_type_strategy(ctstrategy); 160 161 const struct bdevsw ct_bdevsw = { 162 ctopen, ctclose, ctstrategy, ctioctl, nodump, nosize, D_TAPE 163 }; 164 165 const struct cdevsw ct_cdevsw = { 166 ctopen, ctclose, ctread, ctwrite, ctioctl, 167 nostop, notty, nopoll, nommap, nokqfilter, D_TAPE 168 }; 169 170 int ctident __P((struct device *, struct ct_softc *, 171 struct hpibbus_attach_args *)); 172 173 void ctreset __P((struct ct_softc *)); 174 void ctaddeof __P((struct ct_softc *)); 175 void ctustart __P((struct ct_softc *)); 176 void cteof __P((struct ct_softc *, struct buf *)); 177 void ctdone __P((struct ct_softc *, struct buf *)); 178 179 void ctstart __P((void *)); 180 void ctgo __P((void *)); 181 void ctintr __P((void *)); 182 183 void ctcommand __P((dev_t, int, int)); 184 185 struct ctinfo { 186 short hwid; 187 short punit; 188 char *desc; 189 } ctinfo[] = { 190 { CT7946ID, 1, "7946A" }, 191 { CT7912PID, 1, "7912P" }, 192 { CT7914PID, 1, "7914P" }, 193 { CT9144ID, 0, "9144" }, 194 { CT9145ID, 0, "9145" }, 195 { CT35401ID, 0, "35401A"}, 196 }; 197 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 198 199 #define CT_NOREW 4 200 #define CT_STREAM 8 201 #define UNIT(x) (minor(x) & 3) 202 #define ctpunit(x) ((x) & 7) 203 204 #ifdef DEBUG 205 int ctdebug = 0; 206 #define CDB_FILES 0x01 207 #define CT_BSF 0x02 208 #endif 209 210 int 211 ctmatch(parent, match, aux) 212 struct device *parent; 213 struct cfdata *match; 214 void *aux; 215 { 216 struct hpibbus_attach_args *ha = aux; 217 218 return (ctident(parent, NULL, ha)); 219 } 220 221 void 222 ctattach(parent, self, aux) 223 struct device *parent, *self; 224 void *aux; 225 { 226 struct ct_softc *sc = (struct ct_softc *)self; 227 struct hpibbus_attach_args *ha = aux; 228 229 if (ctident(parent, sc, ha) == 0) { 230 printf("\n%s: didn't respond to describe command!\n", 231 sc->sc_dev.dv_xname); 232 return; 233 } 234 235 sc->sc_slave = ha->ha_slave; 236 sc->sc_punit = ha->ha_punit; 237 238 bufq_alloc(&sc->sc_tab, BUFQ_FCFS); 239 240 /* Initialize hpib job queue entry. */ 241 sc->sc_hq.hq_softc = sc; 242 sc->sc_hq.hq_slave = sc->sc_slave; 243 sc->sc_hq.hq_start = ctstart; 244 sc->sc_hq.hq_go = ctgo; 245 sc->sc_hq.hq_intr = ctintr; 246 247 ctreset(sc); 248 sc->sc_flags |= CTF_ALIVE; 249 } 250 251 int 252 ctident(parent, sc, ha) 253 struct device *parent; 254 struct ct_softc *sc; 255 struct hpibbus_attach_args *ha; 256 { 257 struct ct_describe desc; 258 u_char stat, cmd[3]; 259 char name[7]; 260 int i, id, n, type, canstream; 261 262 type = canstream = 0; 263 264 /* Verify that we have a CS80 device. */ 265 if ((ha->ha_id & 0x200) == 0) 266 return (0); 267 268 /* Is it one of the tapes we support? */ 269 for (id = 0; id < nctinfo; id++) 270 if (ha->ha_id == ctinfo[id].hwid) 271 break; 272 if (id == nctinfo) 273 return (0); 274 275 ha->ha_punit = ctinfo[id].punit; 276 277 /* 278 * So far, so good. Get drive parameters. Note command 279 * is always issued to unit 0. 280 */ 281 cmd[0] = C_SUNIT(0); 282 cmd[1] = C_SVOL(0); 283 cmd[2] = C_DESC; 284 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 285 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 286 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 287 288 memset(name, 0, sizeof(name)); 289 if (stat == 0) { 290 n = desc.d_name; 291 for (i = 5; i >= 0; i--) { 292 name[i] = (n & 0xf) + '0'; 293 n >>= 4; 294 } 295 } 296 297 switch (ha->ha_id) { 298 case CT7946ID: 299 if (memcmp(name, "079450", 6) == 0) 300 return (0); /* not really a 7946 */ 301 /* fall into... */ 302 case CT9144ID: 303 case CT9145ID: 304 case CT35401ID: 305 type = CT9144; 306 canstream = 1; 307 break; 308 309 case CT7912PID: 310 case CT7914PID: 311 type = CT88140; 312 break; 313 } 314 315 if (sc != NULL) { 316 sc->sc_type = type; 317 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 318 printf(": %s %stape\n", ctinfo[id].desc, 319 canstream ? "streaming " : ""); 320 } 321 322 return (1); 323 } 324 325 void 326 ctreset(sc) 327 struct ct_softc *sc; 328 { 329 int ctlr, slave; 330 u_char stat; 331 332 ctlr = sc->sc_dev.dv_parent->dv_unit; 333 slave = sc->sc_slave; 334 335 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 336 sc->sc_clear.cmd = C_CLEAR; 337 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 338 hpibswait(ctlr, slave); 339 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 340 341 sc->sc_src.unit = C_SUNIT(CTCTLR); 342 sc->sc_src.nop = C_NOP; 343 sc->sc_src.cmd = C_SREL; 344 sc->sc_src.param = C_REL; 345 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 346 hpibswait(ctlr, slave); 347 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 348 349 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 350 sc->sc_ssmc.cmd = C_SSM; 351 sc->sc_ssmc.refm = REF_MASK; 352 sc->sc_ssmc.fefm = FEF_MASK; 353 sc->sc_ssmc.aefm = AEF_MASK; 354 sc->sc_ssmc.iefm = IEF_MASK; 355 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 356 hpibswait(ctlr, slave); 357 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 358 359 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 360 sc->sc_soptc.nop = C_NOP; 361 sc->sc_soptc.cmd = C_SOPT; 362 sc->sc_soptc.opt = C_SPAR; 363 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 364 hpibswait(ctlr, slave); 365 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 366 } 367 368 /*ARGSUSED*/ 369 int 370 ctopen(dev, flag, type, p) 371 dev_t dev; 372 int flag, type; 373 struct proc *p; 374 { 375 struct ct_softc *sc; 376 u_char stat; 377 int cc, ctlr, slave; 378 379 if (UNIT(dev) >= ct_cd.cd_ndevs || 380 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 381 (sc->sc_flags & CTF_ALIVE) == 0) 382 return (ENXIO); 383 384 if (sc->sc_flags & CTF_OPEN) 385 return (EBUSY); 386 387 ctlr = sc->sc_dev.dv_parent->dv_unit; 388 slave = sc->sc_slave; 389 390 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 391 sc->sc_soptc.nop = C_NOP; 392 sc->sc_soptc.cmd = C_SOPT; 393 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 394 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 395 else 396 sc->sc_soptc.opt = C_SPAR; 397 398 /* 399 * Check the return of hpibsend() and hpibswait(). 400 * Drive could be loading/unloading a tape. If not checked, 401 * driver hangs. 402 */ 403 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 404 if (cc != sizeof(sc->sc_soptc)) 405 return (EBUSY); 406 407 hpibswait(ctlr, slave); 408 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 409 if (cc != sizeof(stat)) 410 return(EBUSY); 411 412 sc->sc_tpr = tprintf_open(p); 413 sc->sc_flags |= CTF_OPEN; 414 return(0); 415 } 416 417 /*ARGSUSED*/ 418 int 419 ctclose(dev, flag, fmt, p) 420 dev_t dev; 421 int flag, fmt; 422 struct proc *p; 423 { 424 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 425 426 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 427 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 428 ctcommand(dev, MTWEOF, 2); 429 ctcommand(dev, MTBSR, 1); 430 if (sc->sc_eofp == EOFS - 1) 431 sc->sc_eofs[EOFS - 1]--; 432 else 433 sc->sc_eofp--; 434 #ifdef DEBUG 435 if(ctdebug & CT_BSF) 436 printf("%s: ctclose backup eofs prt %d blk %d\n", 437 sc->sc_dev.dv_xname, sc->sc_eofp, 438 sc->sc_eofs[sc->sc_eofp]); 439 #endif 440 } 441 if ((minor(dev) & CT_NOREW) == 0) 442 ctcommand(dev, MTREW, 1); 443 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 444 tprintf_close(sc->sc_tpr); 445 #ifdef DEBUG 446 if (ctdebug & CDB_FILES) 447 printf("ctclose: flags %x\n", sc->sc_flags); 448 #endif 449 return(0); /* XXX */ 450 } 451 452 void 453 ctcommand(dev, cmd, cnt) 454 dev_t dev; 455 int cmd; 456 int cnt; 457 { 458 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 459 struct buf *bp = &sc->sc_bufstore; 460 struct buf *nbp = 0; 461 462 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 463 cnt = sc->sc_eofs[EOFS - 1] - cnt; 464 ctcommand(dev, MTREW, 1); 465 ctcommand(dev, MTFSF, cnt); 466 cnt = 2; 467 cmd = MTBSR; 468 } 469 470 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 471 cnt = 1; 472 cmd = MTREW; 473 } 474 475 sc->sc_flags |= CTF_CMD; 476 sc->sc_bp = bp; 477 sc->sc_cmd = cmd; 478 bp->b_dev = dev; 479 if (cmd == MTFSF) { 480 nbp = (struct buf *)geteblk(MAXBSIZE); 481 bp->b_data = nbp->b_data; 482 bp->b_bcount = MAXBSIZE; 483 } 484 485 while (cnt-- > 0) { 486 bp->b_flags = B_BUSY; 487 if (cmd == MTBSF) { 488 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 489 sc->sc_eofp--; 490 #ifdef DEBUG 491 if (ctdebug & CT_BSF) 492 printf("%s: backup eof pos %d blk %d\n", 493 sc->sc_dev.dv_xname, sc->sc_eofp, 494 sc->sc_eofs[sc->sc_eofp]); 495 #endif 496 } 497 ctstrategy(bp); 498 biowait(bp); 499 } 500 bp->b_flags = 0; 501 sc->sc_flags &= ~CTF_CMD; 502 if (nbp) 503 brelse(nbp); 504 } 505 506 void 507 ctstrategy(bp) 508 struct buf *bp; 509 { 510 int s, unit; 511 struct ct_softc *sc; 512 513 unit = UNIT(bp->b_dev); 514 sc = ct_cd.cd_devs[unit]; 515 516 s = splbio(); 517 BUFQ_PUT(&sc->sc_tab, bp); 518 if (sc->sc_active == 0) { 519 sc->sc_active = 1; 520 ctustart(sc); 521 } 522 splx(s); 523 } 524 525 void 526 ctustart(sc) 527 struct ct_softc *sc; 528 { 529 struct buf *bp; 530 531 bp = BUFQ_PEEK(&sc->sc_tab); 532 sc->sc_addr = bp->b_data; 533 sc->sc_resid = bp->b_bcount; 534 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 535 ctstart(sc); 536 } 537 538 void 539 ctstart(arg) 540 void *arg; 541 { 542 struct ct_softc *sc = arg; 543 struct buf *bp; 544 int i, ctlr, slave; 545 546 ctlr = sc->sc_dev.dv_parent->dv_unit; 547 slave = sc->sc_slave; 548 549 bp = BUFQ_PEEK(&sc->sc_tab); 550 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 551 switch(sc->sc_cmd) { 552 case MTFSF: 553 bp->b_flags |= B_READ; 554 goto mustio; 555 556 case MTBSF: 557 goto gotaddr; 558 559 case MTOFFL: 560 sc->sc_blkno = 0; 561 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 562 sc->sc_ul.cmd = C_UNLOAD; 563 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 564 sizeof(sc->sc_ul)); 565 break; 566 567 case MTWEOF: 568 sc->sc_blkno++; 569 sc->sc_flags |= CTF_WRT; 570 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 571 sc->sc_wfm.cmd = C_WFM; 572 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 573 sizeof(sc->sc_wfm)); 574 ctaddeof(sc); 575 break; 576 577 case MTBSR: 578 sc->sc_blkno--; 579 goto gotaddr; 580 581 case MTFSR: 582 sc->sc_blkno++; 583 goto gotaddr; 584 585 case MTREW: 586 sc->sc_blkno = 0; 587 #ifdef DEBUG 588 if(ctdebug & CT_BSF) 589 printf("%s: clearing eofs\n", 590 sc->sc_dev.dv_xname); 591 #endif 592 for (i=0; i<EOFS; i++) 593 sc->sc_eofs[i] = 0; 594 sc->sc_eofp = 0; 595 596 gotaddr: 597 sc->sc_ioc.saddr = C_SADDR; 598 sc->sc_ioc.addr0 = 0; 599 sc->sc_ioc.addr = sc->sc_blkno; 600 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 601 sc->sc_ioc.nop2 = C_NOP; 602 sc->sc_ioc.slen = C_SLEN; 603 sc->sc_ioc.len = 0; 604 sc->sc_ioc.nop3 = C_NOP; 605 sc->sc_ioc.cmd = C_READ; 606 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 607 sizeof(sc->sc_ioc)); 608 break; 609 } 610 } else { 611 mustio: 612 if ((bp->b_flags & B_READ) && 613 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 614 #ifdef DEBUG 615 if (ctdebug & CDB_FILES) 616 printf("ctstart: before flags %x\n", 617 sc->sc_flags); 618 #endif 619 if (sc->sc_flags & CTF_BEOF) { 620 sc->sc_flags &= ~CTF_BEOF; 621 sc->sc_flags |= CTF_AEOF; 622 #ifdef DEBUG 623 if (ctdebug & CDB_FILES) 624 printf("ctstart: after flags %x\n", 625 sc->sc_flags); 626 #endif 627 } 628 bp->b_resid = bp->b_bcount; 629 ctdone(sc, bp); 630 return; 631 } 632 sc->sc_flags |= CTF_IO; 633 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 634 sc->sc_ioc.saddr = C_SADDR; 635 sc->sc_ioc.addr0 = 0; 636 sc->sc_ioc.addr = sc->sc_blkno; 637 sc->sc_ioc.nop2 = C_NOP; 638 sc->sc_ioc.slen = C_SLEN; 639 sc->sc_ioc.len = sc->sc_resid; 640 sc->sc_ioc.nop3 = C_NOP; 641 if (bp->b_flags & B_READ) 642 sc->sc_ioc.cmd = C_READ; 643 else { 644 sc->sc_ioc.cmd = C_WRITE; 645 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 646 } 647 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 648 } 649 hpibawait(ctlr); 650 } 651 652 void 653 ctgo(arg) 654 void *arg; 655 { 656 struct ct_softc *sc = arg; 657 struct buf *bp; 658 int rw; 659 660 bp = BUFQ_PEEK(&sc->sc_tab); 661 rw = bp->b_flags & B_READ; 662 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 663 sc->sc_addr, sc->sc_resid, rw, rw != 0); 664 } 665 666 /* 667 * Hideous grue to handle EOF/EOT (mostly for reads) 668 */ 669 void 670 cteof(sc, bp) 671 struct ct_softc *sc; 672 struct buf *bp; 673 { 674 long blks; 675 676 /* 677 * EOT on a write is an error. 678 */ 679 if ((bp->b_flags & B_READ) == 0) { 680 bp->b_resid = bp->b_bcount; 681 bp->b_flags |= B_ERROR; 682 bp->b_error = ENOSPC; 683 sc->sc_flags |= CTF_EOT; 684 return; 685 } 686 /* 687 * Use returned block position to determine how many blocks 688 * we really read and update b_resid. 689 */ 690 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 691 #ifdef DEBUG 692 if (ctdebug & CDB_FILES) 693 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 694 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 695 blks, bp->b_bcount - CTKTOB(blks)); 696 #endif 697 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 698 blks = 0; 699 sc->sc_blkno++; 700 } 701 else { 702 sc->sc_blkno = sc->sc_stat.c_blk; 703 } 704 bp->b_resid = bp->b_bcount - CTKTOB(blks); 705 /* 706 * If we are at physical EOV or were after an EOF, 707 * we are now at logical EOT. 708 */ 709 if ((sc->sc_stat.c_aef & AEF_EOV) || 710 (sc->sc_flags & CTF_AEOF)) { 711 sc->sc_flags |= CTF_EOT; 712 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 713 } 714 /* 715 * If we were before an EOF or we have just completed a FSF, 716 * we are now after EOF. 717 */ 718 else if ((sc->sc_flags & CTF_BEOF) || 719 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 720 sc->sc_flags |= CTF_AEOF; 721 sc->sc_flags &= ~CTF_BEOF; 722 } 723 /* 724 * Otherwise if we read something we are now before EOF 725 * (and no longer after EOF). 726 */ 727 else if (blks) { 728 sc->sc_flags |= CTF_BEOF; 729 sc->sc_flags &= ~CTF_AEOF; 730 } 731 /* 732 * Finally, if we didn't read anything we just passed an EOF 733 */ 734 else 735 sc->sc_flags |= CTF_AEOF; 736 #ifdef DEBUG 737 if (ctdebug & CDB_FILES) 738 printf("cteof: leaving flags %x\n", sc->sc_flags); 739 #endif 740 } 741 742 /* ARGSUSED */ 743 void 744 ctintr(arg) 745 void *arg; 746 { 747 struct ct_softc *sc = arg; 748 struct buf *bp; 749 u_char stat; 750 int ctlr, slave, unit; 751 752 ctlr = sc->sc_dev.dv_parent->dv_unit; 753 slave = sc->sc_slave; 754 unit = sc->sc_dev.dv_unit; 755 756 bp = BUFQ_PEEK(&sc->sc_tab); 757 if (bp == NULL) { 758 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 759 return; 760 } 761 if (sc->sc_flags & CTF_IO) { 762 sc->sc_flags &= ~CTF_IO; 763 if (hpibustart(ctlr)) 764 ctgo(sc); 765 return; 766 } 767 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 768 if (hpibpptest(ctlr, slave) == 0) { 769 sc->sc_flags |= CTF_STATWAIT; 770 hpibawait(ctlr); 771 return; 772 } 773 } else 774 sc->sc_flags &= ~CTF_STATWAIT; 775 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 776 #ifdef DEBUG 777 if (ctdebug & CDB_FILES) 778 printf("ctintr: before flags %x\n", sc->sc_flags); 779 #endif 780 if (stat) { 781 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 782 sc->sc_rsc.cmd = C_STATUS; 783 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 784 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 785 sizeof(sc->sc_stat)); 786 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 787 #ifdef DEBUG 788 if (ctdebug & CDB_FILES) 789 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 790 stat, sc->sc_stat.c_aef, 791 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 792 #endif 793 if (stat == 0) { 794 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 795 cteof(sc, bp); 796 ctaddeof(sc); 797 goto done; 798 } 799 if (sc->sc_stat.c_fef & FEF_PF) { 800 ctreset(sc); 801 ctstart(sc); 802 return; 803 } 804 if (sc->sc_stat.c_fef & FEF_REXMT) { 805 ctstart(sc); 806 return; 807 } 808 if (sc->sc_stat.c_aef & 0x5800) { 809 if (sc->sc_stat.c_aef & 0x4000) 810 tprintf(sc->sc_tpr, 811 "%s: uninitialized media\n", 812 sc->sc_dev.dv_xname); 813 if (sc->sc_stat.c_aef & 0x1000) 814 tprintf(sc->sc_tpr, 815 "%s: not ready\n", 816 sc->sc_dev.dv_xname); 817 if (sc->sc_stat.c_aef & 0x0800) 818 tprintf(sc->sc_tpr, 819 "%s: write protect\n", 820 sc->sc_dev.dv_xname); 821 } else { 822 printf("%s err: v%d u%d ru%d bn%ld, ", 823 sc->sc_dev.dv_xname, 824 (sc->sc_stat.c_vu>>4)&0xF, 825 sc->sc_stat.c_vu&0xF, 826 sc->sc_stat.c_pend, 827 sc->sc_stat.c_blk); 828 printf("R0x%x F0x%x A0x%x I0x%x\n", 829 sc->sc_stat.c_ref, 830 sc->sc_stat.c_fef, 831 sc->sc_stat.c_aef, 832 sc->sc_stat.c_ief); 833 } 834 } else 835 printf("%s: request status failed\n", 836 sc->sc_dev.dv_xname); 837 bp->b_flags |= B_ERROR; 838 bp->b_error = EIO; 839 goto done; 840 } else 841 bp->b_resid = 0; 842 if (sc->sc_flags & CTF_CMD) { 843 switch (sc->sc_cmd) { 844 case MTFSF: 845 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 846 sc->sc_blkno += CTBTOK(sc->sc_resid); 847 ctstart(sc); 848 return; 849 case MTBSF: 850 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 851 break; 852 case MTBSR: 853 sc->sc_flags &= ~CTF_BEOF; 854 if (sc->sc_flags & CTF_EOT) { 855 sc->sc_flags |= CTF_AEOF; 856 sc->sc_flags &= ~CTF_EOT; 857 } else if (sc->sc_flags & CTF_AEOF) { 858 sc->sc_flags |= CTF_BEOF; 859 sc->sc_flags &= ~CTF_AEOF; 860 } 861 break; 862 case MTWEOF: 863 sc->sc_flags &= ~CTF_BEOF; 864 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 865 sc->sc_flags |= CTF_EOT; 866 sc->sc_flags &= ~CTF_AEOF; 867 } else 868 sc->sc_flags |= CTF_AEOF; 869 break; 870 case MTREW: 871 case MTOFFL: 872 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 873 break; 874 } 875 } else { 876 sc->sc_flags &= ~CTF_AEOF; 877 sc->sc_blkno += CTBTOK(sc->sc_resid); 878 } 879 done: 880 #ifdef DEBUG 881 if (ctdebug & CDB_FILES) 882 printf("ctintr: after flags %x\n", sc->sc_flags); 883 #endif 884 ctdone(sc, bp); 885 } 886 887 void 888 ctdone(sc, bp) 889 struct ct_softc *sc; 890 struct buf *bp; 891 { 892 893 (void)BUFQ_GET(&sc->sc_tab); 894 biodone(bp); 895 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 896 if (BUFQ_PEEK(&sc->sc_tab) == NULL) { 897 sc->sc_active = 0; 898 return; 899 } 900 ctustart(sc); 901 } 902 903 int 904 ctread(dev, uio, flags) 905 dev_t dev; 906 struct uio *uio; 907 int flags; 908 { 909 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 910 } 911 912 int 913 ctwrite(dev, uio, flags) 914 dev_t dev; 915 struct uio *uio; 916 int flags; 917 { 918 /* XXX: check for hardware write-protect? */ 919 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 920 } 921 922 /*ARGSUSED*/ 923 int 924 ctioctl(dev, cmd, data, flag, p) 925 dev_t dev; 926 u_long cmd; 927 int flag; 928 caddr_t data; 929 struct proc *p; 930 { 931 struct mtop *op; 932 int cnt; 933 934 switch (cmd) { 935 936 case MTIOCTOP: 937 op = (struct mtop *)data; 938 switch(op->mt_op) { 939 940 case MTWEOF: 941 case MTFSF: 942 case MTBSR: 943 case MTBSF: 944 case MTFSR: 945 cnt = op->mt_count; 946 break; 947 948 case MTREW: 949 case MTOFFL: 950 cnt = 1; 951 break; 952 953 default: 954 return(EINVAL); 955 } 956 ctcommand(dev, op->mt_op, cnt); 957 break; 958 959 case MTIOCGET: 960 break; 961 962 default: 963 return(EINVAL); 964 } 965 return(0); 966 } 967 968 void 969 ctaddeof(sc) 970 struct ct_softc *sc; 971 { 972 973 if (sc->sc_eofp == EOFS - 1) 974 sc->sc_eofs[EOFS - 1]++; 975 else { 976 sc->sc_eofp++; 977 if (sc->sc_eofp == EOFS - 1) 978 sc->sc_eofs[EOFS - 1] = EOFS; 979 else 980 /* save blkno */ 981 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 982 } 983 #ifdef DEBUG 984 if (ctdebug & CT_BSF) 985 printf("%s: add eof pos %d blk %d\n", 986 sc->sc_dev.dv_xname, sc->sc_eofp, 987 sc->sc_eofs[sc->sc_eofp]); 988 #endif 989 } 990
Indexes created Mon Sep 22 21:09:42 GMT 2025