ct.c revision 1.24
1 /* $NetBSD: ct.c,v 1.24 2000/01/21 23:29:02 thorpej 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 }; 185 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 186 187 #define CT_NOREW 4 188 #define CT_STREAM 8 189 #define UNIT(x) (minor(x) & 3) 190 #define ctpunit(x) ((x) & 7) 191 192 #ifdef DEBUG 193 int ctdebug = 0; 194 #define CDB_FILES 0x01 195 #define CT_BSF 0x02 196 #endif 197 198 int 199 ctmatch(parent, match, aux) 200 struct device *parent; 201 struct cfdata *match; 202 void *aux; 203 { 204 struct hpibbus_attach_args *ha = aux; 205 206 return (ctident(parent, NULL, ha)); 207 } 208 209 void 210 ctattach(parent, self, aux) 211 struct device *parent, *self; 212 void *aux; 213 { 214 struct ct_softc *sc = (struct ct_softc *)self; 215 struct hpibbus_attach_args *ha = aux; 216 217 if (ctident(parent, sc, ha) == 0) { 218 printf("\n%s: didn't respond to describe command!\n", 219 sc->sc_dev.dv_xname); 220 return; 221 } 222 223 sc->sc_slave = ha->ha_slave; 224 sc->sc_punit = ha->ha_punit; 225 226 BUFQ_INIT(&sc->sc_tab); 227 228 /* Initialize hpib job queue entry. */ 229 sc->sc_hq.hq_softc = sc; 230 sc->sc_hq.hq_slave = sc->sc_slave; 231 sc->sc_hq.hq_start = ctstart; 232 sc->sc_hq.hq_go = ctgo; 233 sc->sc_hq.hq_intr = ctintr; 234 235 ctreset(sc); 236 sc->sc_flags |= CTF_ALIVE; 237 } 238 239 int 240 ctident(parent, sc, ha) 241 struct device *parent; 242 struct ct_softc *sc; 243 struct hpibbus_attach_args *ha; 244 { 245 struct ct_describe desc; 246 u_char stat, cmd[3]; 247 char name[7]; 248 int i, id, n, type, canstream; 249 250 type = canstream = 0; 251 252 /* Verify that we have a CS80 device. */ 253 if ((ha->ha_id & 0x200) == 0) 254 return (0); 255 256 /* Is it one of the tapes we support? */ 257 for (id = 0; id < nctinfo; id++) 258 if (ha->ha_id == ctinfo[id].hwid) 259 break; 260 if (id == nctinfo) 261 return (0); 262 263 ha->ha_punit = ctinfo[id].punit; 264 265 /* 266 * So far, so good. Get drive parameters. Note command 267 * is always issued to unit 0. 268 */ 269 cmd[0] = C_SUNIT(0); 270 cmd[1] = C_SVOL(0); 271 cmd[2] = C_DESC; 272 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 273 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 274 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 275 276 bzero(name, sizeof(name)); 277 if (stat == 0) { 278 n = desc.d_name; 279 for (i = 5; i >= 0; i--) { 280 name[i] = (n & 0xf) + '0'; 281 n >>= 4; 282 } 283 } 284 285 switch (ha->ha_id) { 286 case CT7946ID: 287 if (bcmp(name, "079450", 6) == 0) 288 return (0); /* not really a 7946 */ 289 /* fall into... */ 290 case CT9144ID: 291 case CT9145ID: 292 type = CT9144; 293 canstream = 1; 294 break; 295 296 case CT7912PID: 297 case CT7914PID: 298 type = CT88140; 299 break; 300 } 301 302 if (sc != NULL) { 303 sc->sc_type = type; 304 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 305 printf(": %s %stape\n", ctinfo[id].desc, 306 canstream ? "streaming " : ""); 307 } 308 309 return (1); 310 } 311 312 void 313 ctreset(sc) 314 struct ct_softc *sc; 315 { 316 int ctlr, slave; 317 u_char stat; 318 319 ctlr = sc->sc_dev.dv_parent->dv_unit; 320 slave = sc->sc_slave; 321 322 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 323 sc->sc_clear.cmd = C_CLEAR; 324 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 325 hpibswait(ctlr, slave); 326 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 327 328 sc->sc_src.unit = C_SUNIT(CTCTLR); 329 sc->sc_src.nop = C_NOP; 330 sc->sc_src.cmd = C_SREL; 331 sc->sc_src.param = C_REL; 332 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 333 hpibswait(ctlr, slave); 334 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 335 336 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 337 sc->sc_ssmc.cmd = C_SSM; 338 sc->sc_ssmc.refm = REF_MASK; 339 sc->sc_ssmc.fefm = FEF_MASK; 340 sc->sc_ssmc.aefm = AEF_MASK; 341 sc->sc_ssmc.iefm = IEF_MASK; 342 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 343 hpibswait(ctlr, slave); 344 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 345 346 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 347 sc->sc_soptc.nop = C_NOP; 348 sc->sc_soptc.cmd = C_SOPT; 349 sc->sc_soptc.opt = C_SPAR; 350 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 351 hpibswait(ctlr, slave); 352 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 353 } 354 355 /*ARGSUSED*/ 356 int 357 ctopen(dev, flag, type, p) 358 dev_t dev; 359 int flag, type; 360 struct proc *p; 361 { 362 struct ct_softc *sc; 363 u_char stat; 364 int cc, ctlr, slave; 365 366 if (UNIT(dev) >= ct_cd.cd_ndevs || 367 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 368 (sc->sc_flags & CTF_ALIVE) == 0) 369 return (ENXIO); 370 371 if (sc->sc_flags & CTF_OPEN) 372 return (EBUSY); 373 374 ctlr = sc->sc_dev.dv_parent->dv_unit; 375 slave = sc->sc_slave; 376 377 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 378 sc->sc_soptc.nop = C_NOP; 379 sc->sc_soptc.cmd = C_SOPT; 380 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 381 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 382 else 383 sc->sc_soptc.opt = C_SPAR; 384 385 /* 386 * Check the return of hpibsend() and hpibswait(). 387 * Drive could be loading/unloading a tape. If not checked, 388 * driver hangs. 389 */ 390 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 391 if (cc != sizeof(sc->sc_soptc)) 392 return (EBUSY); 393 394 hpibswait(ctlr, slave); 395 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 396 if (cc != sizeof(stat)) 397 return(EBUSY); 398 399 sc->sc_tpr = tprintf_open(p); 400 sc->sc_flags |= CTF_OPEN; 401 return(0); 402 } 403 404 /*ARGSUSED*/ 405 int 406 ctclose(dev, flag, fmt, p) 407 dev_t dev; 408 int flag, fmt; 409 struct proc *p; 410 { 411 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 412 413 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 414 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 415 ctcommand(dev, MTWEOF, 2); 416 ctcommand(dev, MTBSR, 1); 417 if (sc->sc_eofp == EOFS - 1) 418 sc->sc_eofs[EOFS - 1]--; 419 else 420 sc->sc_eofp--; 421 #ifdef DEBUG 422 if(ctdebug & CT_BSF) 423 printf("%s: ctclose backup eofs prt %d blk %d\n", 424 sc->sc_dev.dv_xname, sc->sc_eofp, 425 sc->sc_eofs[sc->sc_eofp]); 426 #endif 427 } 428 if ((minor(dev) & CT_NOREW) == 0) 429 ctcommand(dev, MTREW, 1); 430 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 431 tprintf_close(sc->sc_tpr); 432 #ifdef DEBUG 433 if (ctdebug & CDB_FILES) 434 printf("ctclose: flags %x\n", sc->sc_flags); 435 #endif 436 return(0); /* XXX */ 437 } 438 439 void 440 ctcommand(dev, cmd, cnt) 441 dev_t dev; 442 int cmd; 443 int cnt; 444 { 445 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 446 struct buf *bp = &sc->sc_bufstore; 447 struct buf *nbp = 0; 448 449 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 450 cnt = sc->sc_eofs[EOFS - 1] - cnt; 451 ctcommand(dev, MTREW, 1); 452 ctcommand(dev, MTFSF, cnt); 453 cnt = 2; 454 cmd = MTBSR; 455 } 456 457 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 458 cnt = 1; 459 cmd = MTREW; 460 } 461 462 sc->sc_flags |= CTF_CMD; 463 sc->sc_bp = bp; 464 sc->sc_cmd = cmd; 465 bp->b_dev = dev; 466 if (cmd == MTFSF) { 467 nbp = (struct buf *)geteblk(MAXBSIZE); 468 bp->b_un.b_addr = nbp->b_un.b_addr; 469 bp->b_bcount = MAXBSIZE; 470 } 471 472 while (cnt-- > 0) { 473 bp->b_flags = B_BUSY; 474 if (cmd == MTBSF) { 475 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 476 sc->sc_eofp--; 477 #ifdef DEBUG 478 if (ctdebug & CT_BSF) 479 printf("%s: backup eof pos %d blk %d\n", 480 sc->sc_dev.dv_xname, sc->sc_eofp, 481 sc->sc_eofs[sc->sc_eofp]); 482 #endif 483 } 484 ctstrategy(bp); 485 biowait(bp); 486 } 487 bp->b_flags = 0; 488 sc->sc_flags &= ~CTF_CMD; 489 if (nbp) 490 brelse(nbp); 491 } 492 493 void 494 ctstrategy(bp) 495 struct buf *bp; 496 { 497 int s, unit; 498 struct ct_softc *sc; 499 500 unit = UNIT(bp->b_dev); 501 sc = ct_cd.cd_devs[unit]; 502 503 s = splbio(); 504 BUFQ_INSERT_TAIL(&sc->sc_tab, bp); 505 if (sc->sc_active == 0) { 506 sc->sc_active = 1; 507 ctustart(sc); 508 } 509 splx(s); 510 } 511 512 void 513 ctustart(sc) 514 struct ct_softc *sc; 515 { 516 struct buf *bp; 517 518 bp = BUFQ_FIRST(&sc->sc_tab); 519 sc->sc_addr = bp->b_un.b_addr; 520 sc->sc_resid = bp->b_bcount; 521 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 522 ctstart(sc); 523 } 524 525 void 526 ctstart(arg) 527 void *arg; 528 { 529 struct ct_softc *sc = arg; 530 struct buf *bp; 531 int i, ctlr, slave; 532 533 ctlr = sc->sc_dev.dv_parent->dv_unit; 534 slave = sc->sc_slave; 535 536 bp = BUFQ_FIRST(&sc->sc_tab); 537 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 538 switch(sc->sc_cmd) { 539 case MTFSF: 540 bp->b_flags |= B_READ; 541 goto mustio; 542 543 case MTBSF: 544 goto gotaddr; 545 546 case MTOFFL: 547 sc->sc_blkno = 0; 548 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 549 sc->sc_ul.cmd = C_UNLOAD; 550 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 551 sizeof(sc->sc_ul)); 552 break; 553 554 case MTWEOF: 555 sc->sc_blkno++; 556 sc->sc_flags |= CTF_WRT; 557 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 558 sc->sc_wfm.cmd = C_WFM; 559 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 560 sizeof(sc->sc_wfm)); 561 ctaddeof(sc); 562 break; 563 564 case MTBSR: 565 sc->sc_blkno--; 566 goto gotaddr; 567 568 case MTFSR: 569 sc->sc_blkno++; 570 goto gotaddr; 571 572 case MTREW: 573 sc->sc_blkno = 0; 574 #ifdef DEBUG 575 if(ctdebug & CT_BSF) 576 printf("%s: clearing eofs\n", 577 sc->sc_dev.dv_xname); 578 #endif 579 for (i=0; i<EOFS; i++) 580 sc->sc_eofs[i] = 0; 581 sc->sc_eofp = 0; 582 583 gotaddr: 584 sc->sc_ioc.saddr = C_SADDR; 585 sc->sc_ioc.addr0 = 0; 586 sc->sc_ioc.addr = sc->sc_blkno; 587 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 588 sc->sc_ioc.nop2 = C_NOP; 589 sc->sc_ioc.slen = C_SLEN; 590 sc->sc_ioc.len = 0; 591 sc->sc_ioc.nop3 = C_NOP; 592 sc->sc_ioc.cmd = C_READ; 593 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 594 sizeof(sc->sc_ioc)); 595 break; 596 } 597 } else { 598 mustio: 599 if ((bp->b_flags & B_READ) && 600 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 601 #ifdef DEBUG 602 if (ctdebug & CDB_FILES) 603 printf("ctstart: before flags %x\n", 604 sc->sc_flags); 605 #endif 606 if (sc->sc_flags & CTF_BEOF) { 607 sc->sc_flags &= ~CTF_BEOF; 608 sc->sc_flags |= CTF_AEOF; 609 #ifdef DEBUG 610 if (ctdebug & CDB_FILES) 611 printf("ctstart: after flags %x\n", 612 sc->sc_flags); 613 #endif 614 } 615 bp->b_resid = bp->b_bcount; 616 ctdone(sc, bp); 617 return; 618 } 619 sc->sc_flags |= CTF_IO; 620 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 621 sc->sc_ioc.saddr = C_SADDR; 622 sc->sc_ioc.addr0 = 0; 623 sc->sc_ioc.addr = sc->sc_blkno; 624 sc->sc_ioc.nop2 = C_NOP; 625 sc->sc_ioc.slen = C_SLEN; 626 sc->sc_ioc.len = sc->sc_resid; 627 sc->sc_ioc.nop3 = C_NOP; 628 if (bp->b_flags & B_READ) 629 sc->sc_ioc.cmd = C_READ; 630 else { 631 sc->sc_ioc.cmd = C_WRITE; 632 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 633 } 634 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 635 } 636 hpibawait(ctlr); 637 } 638 639 void 640 ctgo(arg) 641 void *arg; 642 { 643 struct ct_softc *sc = arg; 644 struct buf *bp; 645 int rw; 646 647 bp = BUFQ_FIRST(&sc->sc_tab); 648 rw = bp->b_flags & B_READ; 649 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 650 sc->sc_addr, sc->sc_resid, rw, rw != 0); 651 } 652 653 /* 654 * Hideous grue to handle EOF/EOT (mostly for reads) 655 */ 656 void 657 cteof(sc, bp) 658 struct ct_softc *sc; 659 struct buf *bp; 660 { 661 long blks; 662 663 /* 664 * EOT on a write is an error. 665 */ 666 if ((bp->b_flags & B_READ) == 0) { 667 bp->b_resid = bp->b_bcount; 668 bp->b_flags |= B_ERROR; 669 bp->b_error = ENOSPC; 670 sc->sc_flags |= CTF_EOT; 671 return; 672 } 673 /* 674 * Use returned block position to determine how many blocks 675 * we really read and update b_resid. 676 */ 677 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 678 #ifdef DEBUG 679 if (ctdebug & CDB_FILES) 680 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 681 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 682 blks, bp->b_bcount - CTKTOB(blks)); 683 #endif 684 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 685 blks = 0; 686 sc->sc_blkno++; 687 } 688 else { 689 sc->sc_blkno = sc->sc_stat.c_blk; 690 } 691 bp->b_resid = bp->b_bcount - CTKTOB(blks); 692 /* 693 * If we are at physical EOV or were after an EOF, 694 * we are now at logical EOT. 695 */ 696 if ((sc->sc_stat.c_aef & AEF_EOV) || 697 (sc->sc_flags & CTF_AEOF)) { 698 sc->sc_flags |= CTF_EOT; 699 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 700 } 701 /* 702 * If we were before an EOF or we have just completed a FSF, 703 * we are now after EOF. 704 */ 705 else if ((sc->sc_flags & CTF_BEOF) || 706 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 707 sc->sc_flags |= CTF_AEOF; 708 sc->sc_flags &= ~CTF_BEOF; 709 } 710 /* 711 * Otherwise if we read something we are now before EOF 712 * (and no longer after EOF). 713 */ 714 else if (blks) { 715 sc->sc_flags |= CTF_BEOF; 716 sc->sc_flags &= ~CTF_AEOF; 717 } 718 /* 719 * Finally, if we didn't read anything we just passed an EOF 720 */ 721 else 722 sc->sc_flags |= CTF_AEOF; 723 #ifdef DEBUG 724 if (ctdebug & CDB_FILES) 725 printf("cteof: leaving flags %x\n", sc->sc_flags); 726 #endif 727 } 728 729 /* ARGSUSED */ 730 void 731 ctintr(arg) 732 void *arg; 733 { 734 struct ct_softc *sc = arg; 735 struct buf *bp; 736 u_char stat; 737 int ctlr, slave, unit; 738 739 ctlr = sc->sc_dev.dv_parent->dv_unit; 740 slave = sc->sc_slave; 741 unit = sc->sc_dev.dv_unit; 742 743 bp = BUFQ_FIRST(&sc->sc_tab); 744 if (bp == NULL) { 745 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 746 return; 747 } 748 if (sc->sc_flags & CTF_IO) { 749 sc->sc_flags &= ~CTF_IO; 750 if (hpibustart(ctlr)) 751 ctgo(sc); 752 return; 753 } 754 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 755 if (hpibpptest(ctlr, slave) == 0) { 756 sc->sc_flags |= CTF_STATWAIT; 757 hpibawait(ctlr); 758 return; 759 } 760 } else 761 sc->sc_flags &= ~CTF_STATWAIT; 762 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 763 #ifdef DEBUG 764 if (ctdebug & CDB_FILES) 765 printf("ctintr: before flags %x\n", sc->sc_flags); 766 #endif 767 if (stat) { 768 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 769 sc->sc_rsc.cmd = C_STATUS; 770 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 771 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 772 sizeof(sc->sc_stat)); 773 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 774 #ifdef DEBUG 775 if (ctdebug & CDB_FILES) 776 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 777 stat, sc->sc_stat.c_aef, 778 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 779 #endif 780 if (stat == 0) { 781 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 782 cteof(sc, bp); 783 ctaddeof(sc); 784 goto done; 785 } 786 if (sc->sc_stat.c_fef & FEF_PF) { 787 ctreset(sc); 788 ctstart(sc); 789 return; 790 } 791 if (sc->sc_stat.c_fef & FEF_REXMT) { 792 ctstart(sc); 793 return; 794 } 795 if (sc->sc_stat.c_aef & 0x5800) { 796 if (sc->sc_stat.c_aef & 0x4000) 797 tprintf(sc->sc_tpr, 798 "%s: uninitialized media\n", 799 sc->sc_dev.dv_xname); 800 if (sc->sc_stat.c_aef & 0x1000) 801 tprintf(sc->sc_tpr, 802 "%s: not ready\n", 803 sc->sc_dev.dv_xname); 804 if (sc->sc_stat.c_aef & 0x0800) 805 tprintf(sc->sc_tpr, 806 "%s: write protect\n", 807 sc->sc_dev.dv_xname); 808 } else { 809 printf("%s err: v%d u%d ru%d bn%ld, ", 810 sc->sc_dev.dv_xname, 811 (sc->sc_stat.c_vu>>4)&0xF, 812 sc->sc_stat.c_vu&0xF, 813 sc->sc_stat.c_pend, 814 sc->sc_stat.c_blk); 815 printf("R0x%x F0x%x A0x%x I0x%x\n", 816 sc->sc_stat.c_ref, 817 sc->sc_stat.c_fef, 818 sc->sc_stat.c_aef, 819 sc->sc_stat.c_ief); 820 } 821 } else 822 printf("%s: request status failed\n", 823 sc->sc_dev.dv_xname); 824 bp->b_flags |= B_ERROR; 825 bp->b_error = EIO; 826 goto done; 827 } else 828 bp->b_resid = 0; 829 if (sc->sc_flags & CTF_CMD) { 830 switch (sc->sc_cmd) { 831 case MTFSF: 832 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 833 sc->sc_blkno += CTBTOK(sc->sc_resid); 834 ctstart(sc); 835 return; 836 case MTBSF: 837 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 838 break; 839 case MTBSR: 840 sc->sc_flags &= ~CTF_BEOF; 841 if (sc->sc_flags & CTF_EOT) { 842 sc->sc_flags |= CTF_AEOF; 843 sc->sc_flags &= ~CTF_EOT; 844 } else if (sc->sc_flags & CTF_AEOF) { 845 sc->sc_flags |= CTF_BEOF; 846 sc->sc_flags &= ~CTF_AEOF; 847 } 848 break; 849 case MTWEOF: 850 sc->sc_flags &= ~CTF_BEOF; 851 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 852 sc->sc_flags |= CTF_EOT; 853 sc->sc_flags &= ~CTF_AEOF; 854 } else 855 sc->sc_flags |= CTF_AEOF; 856 break; 857 case MTREW: 858 case MTOFFL: 859 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 860 break; 861 } 862 } else { 863 sc->sc_flags &= ~CTF_AEOF; 864 sc->sc_blkno += CTBTOK(sc->sc_resid); 865 } 866 done: 867 #ifdef DEBUG 868 if (ctdebug & CDB_FILES) 869 printf("ctintr: after flags %x\n", sc->sc_flags); 870 #endif 871 ctdone(sc, bp); 872 } 873 874 void 875 ctdone(sc, bp) 876 struct ct_softc *sc; 877 struct buf *bp; 878 { 879 880 BUFQ_REMOVE(&sc->sc_tab, bp); 881 biodone(bp); 882 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 883 if (BUFQ_FIRST(&sc->sc_tab) == NULL) { 884 sc->sc_active = 0; 885 return; 886 } 887 ctustart(sc); 888 } 889 890 int 891 ctread(dev, uio, flags) 892 dev_t dev; 893 struct uio *uio; 894 int flags; 895 { 896 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 897 } 898 899 int 900 ctwrite(dev, uio, flags) 901 dev_t dev; 902 struct uio *uio; 903 int flags; 904 { 905 /* XXX: check for hardware write-protect? */ 906 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 907 } 908 909 /*ARGSUSED*/ 910 int 911 ctioctl(dev, cmd, data, flag, p) 912 dev_t dev; 913 u_long cmd; 914 int flag; 915 caddr_t data; 916 struct proc *p; 917 { 918 struct mtop *op; 919 int cnt; 920 921 switch (cmd) { 922 923 case MTIOCTOP: 924 op = (struct mtop *)data; 925 switch(op->mt_op) { 926 927 case MTWEOF: 928 case MTFSF: 929 case MTBSR: 930 case MTBSF: 931 case MTFSR: 932 cnt = op->mt_count; 933 break; 934 935 case MTREW: 936 case MTOFFL: 937 cnt = 1; 938 break; 939 940 default: 941 return(EINVAL); 942 } 943 ctcommand(dev, op->mt_op, cnt); 944 break; 945 946 case MTIOCGET: 947 break; 948 949 default: 950 return(EINVAL); 951 } 952 return(0); 953 } 954 955 /* ARGSUSED */ 956 int 957 ctdump(dev, blkno, va, size) 958 dev_t dev; 959 daddr_t blkno; 960 caddr_t va; 961 size_t size; 962 { 963 964 return (ENODEV); 965 } 966 967 void 968 ctaddeof(sc) 969 struct ct_softc *sc; 970 { 971 972 if (sc->sc_eofp == EOFS - 1) 973 sc->sc_eofs[EOFS - 1]++; 974 else { 975 sc->sc_eofp++; 976 if (sc->sc_eofp == EOFS - 1) 977 sc->sc_eofs[EOFS - 1] = EOFS; 978 else 979 /* save blkno */ 980 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 981 } 982 #ifdef DEBUG 983 if (ctdebug & CT_BSF) 984 printf("%s: add eof pos %d blk %d\n", 985 sc->sc_dev.dv_xname, sc->sc_eofp, 986 sc->sc_eofs[sc->sc_eofp]); 987 #endif 988 } 989
Indexes created Thu Sep 25 16:09:42 GMT 2025