ct.c revision 1.26
1 /* $NetBSD: ct.c,v 1.26 2001/05/27 09:09:05 kleink 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_queue sc_tab; 119 int sc_active; 120 struct buf *sc_bp; 121 struct buf sc_bufstore; /* XXX */ 122 int sc_blkno; 123 int sc_cmd; 124 int sc_resid; 125 char *sc_addr; 126 int sc_flags; 127 short sc_type; 128 tpr_t sc_tpr; 129 struct hpibqueue sc_hq; /* entry on hpib job queue */ 130 int sc_eofp; 131 int sc_eofs[EOFS]; 132 }; 133 134 /* flags */ 135 #define CTF_OPEN 0x01 136 #define CTF_ALIVE 0x02 137 #define CTF_WRT 0x04 138 #define CTF_CMD 0x08 139 #define CTF_IO 0x10 140 #define CTF_BEOF 0x20 141 #define CTF_AEOF 0x40 142 #define CTF_EOT 0x80 143 #define CTF_STATWAIT 0x100 144 #define CTF_CANSTREAM 0x200 145 #define CTF_WRTTN 0x400 146 147 int ctmatch __P((struct device *, struct cfdata *, void *)); 148 void ctattach __P((struct device *, struct device *, void *)); 149 150 struct cfattach ct_ca = { 151 sizeof(struct ct_softc), ctmatch, ctattach 152 }; 153 154 extern struct cfdriver ct_cd; 155 156 int ctident __P((struct device *, struct ct_softc *, 157 struct hpibbus_attach_args *)); 158 159 void ctreset __P((struct ct_softc *)); 160 void ctaddeof __P((struct ct_softc *)); 161 void ctustart __P((struct ct_softc *)); 162 void cteof __P((struct ct_softc *, struct buf *)); 163 void ctdone __P((struct ct_softc *, struct buf *)); 164 165 void ctstart __P((void *)); 166 void ctgo __P((void *)); 167 void ctintr __P((void *)); 168 169 void ctcommand __P((dev_t, int, int)); 170 171 cdev_decl(ct); 172 bdev_decl(ct); 173 174 struct ctinfo { 175 short hwid; 176 short punit; 177 char *desc; 178 } ctinfo[] = { 179 { CT7946ID, 1, "7946A" }, 180 { CT7912PID, 1, "7912P" }, 181 { CT7914PID, 1, "7914P" }, 182 { CT9144ID, 0, "9144" }, 183 { CT9145ID, 0, "9145" }, 184 { CT35401ID, 0, "35401A"}, 185 }; 186 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 187 188 #define CT_NOREW 4 189 #define CT_STREAM 8 190 #define UNIT(x) (minor(x) & 3) 191 #define ctpunit(x) ((x) & 7) 192 193 #ifdef DEBUG 194 int ctdebug = 0; 195 #define CDB_FILES 0x01 196 #define CT_BSF 0x02 197 #endif 198 199 int 200 ctmatch(parent, match, aux) 201 struct device *parent; 202 struct cfdata *match; 203 void *aux; 204 { 205 struct hpibbus_attach_args *ha = aux; 206 207 return (ctident(parent, NULL, ha)); 208 } 209 210 void 211 ctattach(parent, self, aux) 212 struct device *parent, *self; 213 void *aux; 214 { 215 struct ct_softc *sc = (struct ct_softc *)self; 216 struct hpibbus_attach_args *ha = aux; 217 218 if (ctident(parent, sc, ha) == 0) { 219 printf("\n%s: didn't respond to describe command!\n", 220 sc->sc_dev.dv_xname); 221 return; 222 } 223 224 sc->sc_slave = ha->ha_slave; 225 sc->sc_punit = ha->ha_punit; 226 227 BUFQ_INIT(&sc->sc_tab); 228 229 /* Initialize hpib job queue entry. */ 230 sc->sc_hq.hq_softc = sc; 231 sc->sc_hq.hq_slave = sc->sc_slave; 232 sc->sc_hq.hq_start = ctstart; 233 sc->sc_hq.hq_go = ctgo; 234 sc->sc_hq.hq_intr = ctintr; 235 236 ctreset(sc); 237 sc->sc_flags |= CTF_ALIVE; 238 } 239 240 int 241 ctident(parent, sc, ha) 242 struct device *parent; 243 struct ct_softc *sc; 244 struct hpibbus_attach_args *ha; 245 { 246 struct ct_describe desc; 247 u_char stat, cmd[3]; 248 char name[7]; 249 int i, id, n, type, canstream; 250 251 type = canstream = 0; 252 253 /* Verify that we have a CS80 device. */ 254 if ((ha->ha_id & 0x200) == 0) 255 return (0); 256 257 /* Is it one of the tapes we support? */ 258 for (id = 0; id < nctinfo; id++) 259 if (ha->ha_id == ctinfo[id].hwid) 260 break; 261 if (id == nctinfo) 262 return (0); 263 264 ha->ha_punit = ctinfo[id].punit; 265 266 /* 267 * So far, so good. Get drive parameters. Note command 268 * is always issued to unit 0. 269 */ 270 cmd[0] = C_SUNIT(0); 271 cmd[1] = C_SVOL(0); 272 cmd[2] = C_DESC; 273 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 274 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 275 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 276 277 bzero(name, sizeof(name)); 278 if (stat == 0) { 279 n = desc.d_name; 280 for (i = 5; i >= 0; i--) { 281 name[i] = (n & 0xf) + '0'; 282 n >>= 4; 283 } 284 } 285 286 switch (ha->ha_id) { 287 case CT7946ID: 288 if (bcmp(name, "079450", 6) == 0) 289 return (0); /* not really a 7946 */ 290 /* fall into... */ 291 case CT9144ID: 292 case CT9145ID: 293 case CT35401ID: 294 type = CT9144; 295 canstream = 1; 296 break; 297 298 case CT7912PID: 299 case CT7914PID: 300 type = CT88140; 301 break; 302 } 303 304 if (sc != NULL) { 305 sc->sc_type = type; 306 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 307 printf(": %s %stape\n", ctinfo[id].desc, 308 canstream ? "streaming " : ""); 309 } 310 311 return (1); 312 } 313 314 void 315 ctreset(sc) 316 struct ct_softc *sc; 317 { 318 int ctlr, slave; 319 u_char stat; 320 321 ctlr = sc->sc_dev.dv_parent->dv_unit; 322 slave = sc->sc_slave; 323 324 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 325 sc->sc_clear.cmd = C_CLEAR; 326 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 327 hpibswait(ctlr, slave); 328 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 329 330 sc->sc_src.unit = C_SUNIT(CTCTLR); 331 sc->sc_src.nop = C_NOP; 332 sc->sc_src.cmd = C_SREL; 333 sc->sc_src.param = C_REL; 334 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 335 hpibswait(ctlr, slave); 336 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 337 338 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 339 sc->sc_ssmc.cmd = C_SSM; 340 sc->sc_ssmc.refm = REF_MASK; 341 sc->sc_ssmc.fefm = FEF_MASK; 342 sc->sc_ssmc.aefm = AEF_MASK; 343 sc->sc_ssmc.iefm = IEF_MASK; 344 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 345 hpibswait(ctlr, slave); 346 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 347 348 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 349 sc->sc_soptc.nop = C_NOP; 350 sc->sc_soptc.cmd = C_SOPT; 351 sc->sc_soptc.opt = C_SPAR; 352 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 353 hpibswait(ctlr, slave); 354 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 355 } 356 357 /*ARGSUSED*/ 358 int 359 ctopen(dev, flag, type, p) 360 dev_t dev; 361 int flag, type; 362 struct proc *p; 363 { 364 struct ct_softc *sc; 365 u_char stat; 366 int cc, ctlr, slave; 367 368 if (UNIT(dev) >= ct_cd.cd_ndevs || 369 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 370 (sc->sc_flags & CTF_ALIVE) == 0) 371 return (ENXIO); 372 373 if (sc->sc_flags & CTF_OPEN) 374 return (EBUSY); 375 376 ctlr = sc->sc_dev.dv_parent->dv_unit; 377 slave = sc->sc_slave; 378 379 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 380 sc->sc_soptc.nop = C_NOP; 381 sc->sc_soptc.cmd = C_SOPT; 382 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 383 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 384 else 385 sc->sc_soptc.opt = C_SPAR; 386 387 /* 388 * Check the return of hpibsend() and hpibswait(). 389 * Drive could be loading/unloading a tape. If not checked, 390 * driver hangs. 391 */ 392 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 393 if (cc != sizeof(sc->sc_soptc)) 394 return (EBUSY); 395 396 hpibswait(ctlr, slave); 397 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 398 if (cc != sizeof(stat)) 399 return(EBUSY); 400 401 sc->sc_tpr = tprintf_open(p); 402 sc->sc_flags |= CTF_OPEN; 403 return(0); 404 } 405 406 /*ARGSUSED*/ 407 int 408 ctclose(dev, flag, fmt, p) 409 dev_t dev; 410 int flag, fmt; 411 struct proc *p; 412 { 413 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 414 415 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 416 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 417 ctcommand(dev, MTWEOF, 2); 418 ctcommand(dev, MTBSR, 1); 419 if (sc->sc_eofp == EOFS - 1) 420 sc->sc_eofs[EOFS - 1]--; 421 else 422 sc->sc_eofp--; 423 #ifdef DEBUG 424 if(ctdebug & CT_BSF) 425 printf("%s: ctclose backup eofs prt %d blk %d\n", 426 sc->sc_dev.dv_xname, sc->sc_eofp, 427 sc->sc_eofs[sc->sc_eofp]); 428 #endif 429 } 430 if ((minor(dev) & CT_NOREW) == 0) 431 ctcommand(dev, MTREW, 1); 432 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 433 tprintf_close(sc->sc_tpr); 434 #ifdef DEBUG 435 if (ctdebug & CDB_FILES) 436 printf("ctclose: flags %x\n", sc->sc_flags); 437 #endif 438 return(0); /* XXX */ 439 } 440 441 void 442 ctcommand(dev, cmd, cnt) 443 dev_t dev; 444 int cmd; 445 int cnt; 446 { 447 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 448 struct buf *bp = &sc->sc_bufstore; 449 struct buf *nbp = 0; 450 451 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 452 cnt = sc->sc_eofs[EOFS - 1] - cnt; 453 ctcommand(dev, MTREW, 1); 454 ctcommand(dev, MTFSF, cnt); 455 cnt = 2; 456 cmd = MTBSR; 457 } 458 459 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 460 cnt = 1; 461 cmd = MTREW; 462 } 463 464 sc->sc_flags |= CTF_CMD; 465 sc->sc_bp = bp; 466 sc->sc_cmd = cmd; 467 bp->b_dev = dev; 468 if (cmd == MTFSF) { 469 nbp = (struct buf *)geteblk(MAXBSIZE); 470 bp->b_data = nbp->b_data; 471 bp->b_bcount = MAXBSIZE; 472 } 473 474 while (cnt-- > 0) { 475 bp->b_flags = B_BUSY; 476 if (cmd == MTBSF) { 477 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 478 sc->sc_eofp--; 479 #ifdef DEBUG 480 if (ctdebug & CT_BSF) 481 printf("%s: backup eof pos %d blk %d\n", 482 sc->sc_dev.dv_xname, sc->sc_eofp, 483 sc->sc_eofs[sc->sc_eofp]); 484 #endif 485 } 486 ctstrategy(bp); 487 biowait(bp); 488 } 489 bp->b_flags = 0; 490 sc->sc_flags &= ~CTF_CMD; 491 if (nbp) 492 brelse(nbp); 493 } 494 495 void 496 ctstrategy(bp) 497 struct buf *bp; 498 { 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 s = splbio(); 506 BUFQ_INSERT_TAIL(&sc->sc_tab, bp); 507 if (sc->sc_active == 0) { 508 sc->sc_active = 1; 509 ctustart(sc); 510 } 511 splx(s); 512 } 513 514 void 515 ctustart(sc) 516 struct ct_softc *sc; 517 { 518 struct buf *bp; 519 520 bp = BUFQ_FIRST(&sc->sc_tab); 521 sc->sc_addr = bp->b_data; 522 sc->sc_resid = bp->b_bcount; 523 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 524 ctstart(sc); 525 } 526 527 void 528 ctstart(arg) 529 void *arg; 530 { 531 struct ct_softc *sc = arg; 532 struct buf *bp; 533 int i, ctlr, slave; 534 535 ctlr = sc->sc_dev.dv_parent->dv_unit; 536 slave = sc->sc_slave; 537 538 bp = BUFQ_FIRST(&sc->sc_tab); 539 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 540 switch(sc->sc_cmd) { 541 case MTFSF: 542 bp->b_flags |= B_READ; 543 goto mustio; 544 545 case MTBSF: 546 goto gotaddr; 547 548 case MTOFFL: 549 sc->sc_blkno = 0; 550 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 551 sc->sc_ul.cmd = C_UNLOAD; 552 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 553 sizeof(sc->sc_ul)); 554 break; 555 556 case MTWEOF: 557 sc->sc_blkno++; 558 sc->sc_flags |= CTF_WRT; 559 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 560 sc->sc_wfm.cmd = C_WFM; 561 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 562 sizeof(sc->sc_wfm)); 563 ctaddeof(sc); 564 break; 565 566 case MTBSR: 567 sc->sc_blkno--; 568 goto gotaddr; 569 570 case MTFSR: 571 sc->sc_blkno++; 572 goto gotaddr; 573 574 case MTREW: 575 sc->sc_blkno = 0; 576 #ifdef DEBUG 577 if(ctdebug & CT_BSF) 578 printf("%s: clearing eofs\n", 579 sc->sc_dev.dv_xname); 580 #endif 581 for (i=0; i<EOFS; i++) 582 sc->sc_eofs[i] = 0; 583 sc->sc_eofp = 0; 584 585 gotaddr: 586 sc->sc_ioc.saddr = C_SADDR; 587 sc->sc_ioc.addr0 = 0; 588 sc->sc_ioc.addr = sc->sc_blkno; 589 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 590 sc->sc_ioc.nop2 = C_NOP; 591 sc->sc_ioc.slen = C_SLEN; 592 sc->sc_ioc.len = 0; 593 sc->sc_ioc.nop3 = C_NOP; 594 sc->sc_ioc.cmd = C_READ; 595 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 596 sizeof(sc->sc_ioc)); 597 break; 598 } 599 } else { 600 mustio: 601 if ((bp->b_flags & B_READ) && 602 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 603 #ifdef DEBUG 604 if (ctdebug & CDB_FILES) 605 printf("ctstart: before flags %x\n", 606 sc->sc_flags); 607 #endif 608 if (sc->sc_flags & CTF_BEOF) { 609 sc->sc_flags &= ~CTF_BEOF; 610 sc->sc_flags |= CTF_AEOF; 611 #ifdef DEBUG 612 if (ctdebug & CDB_FILES) 613 printf("ctstart: after flags %x\n", 614 sc->sc_flags); 615 #endif 616 } 617 bp->b_resid = bp->b_bcount; 618 ctdone(sc, bp); 619 return; 620 } 621 sc->sc_flags |= CTF_IO; 622 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 623 sc->sc_ioc.saddr = C_SADDR; 624 sc->sc_ioc.addr0 = 0; 625 sc->sc_ioc.addr = sc->sc_blkno; 626 sc->sc_ioc.nop2 = C_NOP; 627 sc->sc_ioc.slen = C_SLEN; 628 sc->sc_ioc.len = sc->sc_resid; 629 sc->sc_ioc.nop3 = C_NOP; 630 if (bp->b_flags & B_READ) 631 sc->sc_ioc.cmd = C_READ; 632 else { 633 sc->sc_ioc.cmd = C_WRITE; 634 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 635 } 636 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 637 } 638 hpibawait(ctlr); 639 } 640 641 void 642 ctgo(arg) 643 void *arg; 644 { 645 struct ct_softc *sc = arg; 646 struct buf *bp; 647 int rw; 648 649 bp = BUFQ_FIRST(&sc->sc_tab); 650 rw = bp->b_flags & B_READ; 651 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 652 sc->sc_addr, sc->sc_resid, rw, rw != 0); 653 } 654 655 /* 656 * Hideous grue to handle EOF/EOT (mostly for reads) 657 */ 658 void 659 cteof(sc, bp) 660 struct ct_softc *sc; 661 struct buf *bp; 662 { 663 long blks; 664 665 /* 666 * EOT on a write is an error. 667 */ 668 if ((bp->b_flags & B_READ) == 0) { 669 bp->b_resid = bp->b_bcount; 670 bp->b_flags |= B_ERROR; 671 bp->b_error = ENOSPC; 672 sc->sc_flags |= CTF_EOT; 673 return; 674 } 675 /* 676 * Use returned block position to determine how many blocks 677 * we really read and update b_resid. 678 */ 679 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 680 #ifdef DEBUG 681 if (ctdebug & CDB_FILES) 682 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 683 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 684 blks, bp->b_bcount - CTKTOB(blks)); 685 #endif 686 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 687 blks = 0; 688 sc->sc_blkno++; 689 } 690 else { 691 sc->sc_blkno = sc->sc_stat.c_blk; 692 } 693 bp->b_resid = bp->b_bcount - CTKTOB(blks); 694 /* 695 * If we are at physical EOV or were after an EOF, 696 * we are now at logical EOT. 697 */ 698 if ((sc->sc_stat.c_aef & AEF_EOV) || 699 (sc->sc_flags & CTF_AEOF)) { 700 sc->sc_flags |= CTF_EOT; 701 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 702 } 703 /* 704 * If we were before an EOF or we have just completed a FSF, 705 * we are now after EOF. 706 */ 707 else if ((sc->sc_flags & CTF_BEOF) || 708 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 709 sc->sc_flags |= CTF_AEOF; 710 sc->sc_flags &= ~CTF_BEOF; 711 } 712 /* 713 * Otherwise if we read something we are now before EOF 714 * (and no longer after EOF). 715 */ 716 else if (blks) { 717 sc->sc_flags |= CTF_BEOF; 718 sc->sc_flags &= ~CTF_AEOF; 719 } 720 /* 721 * Finally, if we didn't read anything we just passed an EOF 722 */ 723 else 724 sc->sc_flags |= CTF_AEOF; 725 #ifdef DEBUG 726 if (ctdebug & CDB_FILES) 727 printf("cteof: leaving flags %x\n", sc->sc_flags); 728 #endif 729 } 730 731 /* ARGSUSED */ 732 void 733 ctintr(arg) 734 void *arg; 735 { 736 struct ct_softc *sc = arg; 737 struct buf *bp; 738 u_char stat; 739 int ctlr, slave, unit; 740 741 ctlr = sc->sc_dev.dv_parent->dv_unit; 742 slave = sc->sc_slave; 743 unit = sc->sc_dev.dv_unit; 744 745 bp = BUFQ_FIRST(&sc->sc_tab); 746 if (bp == NULL) { 747 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 748 return; 749 } 750 if (sc->sc_flags & CTF_IO) { 751 sc->sc_flags &= ~CTF_IO; 752 if (hpibustart(ctlr)) 753 ctgo(sc); 754 return; 755 } 756 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 757 if (hpibpptest(ctlr, slave) == 0) { 758 sc->sc_flags |= CTF_STATWAIT; 759 hpibawait(ctlr); 760 return; 761 } 762 } else 763 sc->sc_flags &= ~CTF_STATWAIT; 764 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 765 #ifdef DEBUG 766 if (ctdebug & CDB_FILES) 767 printf("ctintr: before flags %x\n", sc->sc_flags); 768 #endif 769 if (stat) { 770 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 771 sc->sc_rsc.cmd = C_STATUS; 772 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 773 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 774 sizeof(sc->sc_stat)); 775 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 776 #ifdef DEBUG 777 if (ctdebug & CDB_FILES) 778 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 779 stat, sc->sc_stat.c_aef, 780 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 781 #endif 782 if (stat == 0) { 783 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 784 cteof(sc, bp); 785 ctaddeof(sc); 786 goto done; 787 } 788 if (sc->sc_stat.c_fef & FEF_PF) { 789 ctreset(sc); 790 ctstart(sc); 791 return; 792 } 793 if (sc->sc_stat.c_fef & FEF_REXMT) { 794 ctstart(sc); 795 return; 796 } 797 if (sc->sc_stat.c_aef & 0x5800) { 798 if (sc->sc_stat.c_aef & 0x4000) 799 tprintf(sc->sc_tpr, 800 "%s: uninitialized media\n", 801 sc->sc_dev.dv_xname); 802 if (sc->sc_stat.c_aef & 0x1000) 803 tprintf(sc->sc_tpr, 804 "%s: not ready\n", 805 sc->sc_dev.dv_xname); 806 if (sc->sc_stat.c_aef & 0x0800) 807 tprintf(sc->sc_tpr, 808 "%s: write protect\n", 809 sc->sc_dev.dv_xname); 810 } else { 811 printf("%s err: v%d u%d ru%d bn%ld, ", 812 sc->sc_dev.dv_xname, 813 (sc->sc_stat.c_vu>>4)&0xF, 814 sc->sc_stat.c_vu&0xF, 815 sc->sc_stat.c_pend, 816 sc->sc_stat.c_blk); 817 printf("R0x%x F0x%x A0x%x I0x%x\n", 818 sc->sc_stat.c_ref, 819 sc->sc_stat.c_fef, 820 sc->sc_stat.c_aef, 821 sc->sc_stat.c_ief); 822 } 823 } else 824 printf("%s: request status failed\n", 825 sc->sc_dev.dv_xname); 826 bp->b_flags |= B_ERROR; 827 bp->b_error = EIO; 828 goto done; 829 } else 830 bp->b_resid = 0; 831 if (sc->sc_flags & CTF_CMD) { 832 switch (sc->sc_cmd) { 833 case MTFSF: 834 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 835 sc->sc_blkno += CTBTOK(sc->sc_resid); 836 ctstart(sc); 837 return; 838 case MTBSF: 839 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 840 break; 841 case MTBSR: 842 sc->sc_flags &= ~CTF_BEOF; 843 if (sc->sc_flags & CTF_EOT) { 844 sc->sc_flags |= CTF_AEOF; 845 sc->sc_flags &= ~CTF_EOT; 846 } else if (sc->sc_flags & CTF_AEOF) { 847 sc->sc_flags |= CTF_BEOF; 848 sc->sc_flags &= ~CTF_AEOF; 849 } 850 break; 851 case MTWEOF: 852 sc->sc_flags &= ~CTF_BEOF; 853 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 854 sc->sc_flags |= CTF_EOT; 855 sc->sc_flags &= ~CTF_AEOF; 856 } else 857 sc->sc_flags |= CTF_AEOF; 858 break; 859 case MTREW: 860 case MTOFFL: 861 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 862 break; 863 } 864 } else { 865 sc->sc_flags &= ~CTF_AEOF; 866 sc->sc_blkno += CTBTOK(sc->sc_resid); 867 } 868 done: 869 #ifdef DEBUG 870 if (ctdebug & CDB_FILES) 871 printf("ctintr: after flags %x\n", sc->sc_flags); 872 #endif 873 ctdone(sc, bp); 874 } 875 876 void 877 ctdone(sc, bp) 878 struct ct_softc *sc; 879 struct buf *bp; 880 { 881 882 BUFQ_REMOVE(&sc->sc_tab, bp); 883 biodone(bp); 884 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 885 if (BUFQ_FIRST(&sc->sc_tab) == NULL) { 886 sc->sc_active = 0; 887 return; 888 } 889 ctustart(sc); 890 } 891 892 int 893 ctread(dev, uio, flags) 894 dev_t dev; 895 struct uio *uio; 896 int flags; 897 { 898 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 899 } 900 901 int 902 ctwrite(dev, uio, flags) 903 dev_t dev; 904 struct uio *uio; 905 int flags; 906 { 907 /* XXX: check for hardware write-protect? */ 908 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 909 } 910 911 /*ARGSUSED*/ 912 int 913 ctioctl(dev, cmd, data, flag, p) 914 dev_t dev; 915 u_long cmd; 916 int flag; 917 caddr_t data; 918 struct proc *p; 919 { 920 struct mtop *op; 921 int cnt; 922 923 switch (cmd) { 924 925 case MTIOCTOP: 926 op = (struct mtop *)data; 927 switch(op->mt_op) { 928 929 case MTWEOF: 930 case MTFSF: 931 case MTBSR: 932 case MTBSF: 933 case MTFSR: 934 cnt = op->mt_count; 935 break; 936 937 case MTREW: 938 case MTOFFL: 939 cnt = 1; 940 break; 941 942 default: 943 return(EINVAL); 944 } 945 ctcommand(dev, op->mt_op, cnt); 946 break; 947 948 case MTIOCGET: 949 break; 950 951 default: 952 return(EINVAL); 953 } 954 return(0); 955 } 956 957 /* ARGSUSED */ 958 int 959 ctdump(dev, blkno, va, size) 960 dev_t dev; 961 daddr_t blkno; 962 caddr_t va; 963 size_t size; 964 { 965 966 return (ENODEV); 967 } 968 969 void 970 ctaddeof(sc) 971 struct ct_softc *sc; 972 { 973 974 if (sc->sc_eofp == EOFS - 1) 975 sc->sc_eofs[EOFS - 1]++; 976 else { 977 sc->sc_eofp++; 978 if (sc->sc_eofp == EOFS - 1) 979 sc->sc_eofs[EOFS - 1] = EOFS; 980 else 981 /* save blkno */ 982 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 983 } 984 #ifdef DEBUG 985 if (ctdebug & CT_BSF) 986 printf("%s: add eof pos %d blk %d\n", 987 sc->sc_dev.dv_xname, sc->sc_eofp, 988 sc->sc_eofs[sc->sc_eofp]); 989 #endif 990 } 991
Indexes created Mon Sep 22 13:09:51 GMT 2025