ct.c revision 1.30
1 /* $NetBSD: ct.c,v 1.30 2002/09/06 13:18:43 gehenna 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 1.30 2002/09/06 13:18:43 gehenna 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 struct cfattach ct_ca = { 154 sizeof(struct ct_softc), ctmatch, ctattach 155 }; 156 157 extern struct cfdriver ct_cd; 158 159 dev_type_open(ctopen); 160 dev_type_close(ctclose); 161 dev_type_read(ctread); 162 dev_type_write(ctwrite); 163 dev_type_ioctl(ctioctl); 164 dev_type_strategy(ctstrategy); 165 166 const struct bdevsw ct_bdevsw = { 167 ctopen, ctclose, ctstrategy, ctioctl, nodump, nosize, D_TAPE 168 }; 169 170 const struct cdevsw ct_cdevsw = { 171 ctopen, ctclose, ctread, ctwrite, ctioctl, 172 nostop, notty, nopoll, nommap, D_TAPE 173 }; 174 175 int ctident __P((struct device *, struct ct_softc *, 176 struct hpibbus_attach_args *)); 177 178 void ctreset __P((struct ct_softc *)); 179 void ctaddeof __P((struct ct_softc *)); 180 void ctustart __P((struct ct_softc *)); 181 void cteof __P((struct ct_softc *, struct buf *)); 182 void ctdone __P((struct ct_softc *, struct buf *)); 183 184 void ctstart __P((void *)); 185 void ctgo __P((void *)); 186 void ctintr __P((void *)); 187 188 void ctcommand __P((dev_t, int, int)); 189 190 struct ctinfo { 191 short hwid; 192 short punit; 193 char *desc; 194 } ctinfo[] = { 195 { CT7946ID, 1, "7946A" }, 196 { CT7912PID, 1, "7912P" }, 197 { CT7914PID, 1, "7914P" }, 198 { CT9144ID, 0, "9144" }, 199 { CT9145ID, 0, "9145" }, 200 { CT35401ID, 0, "35401A"}, 201 }; 202 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 203 204 #define CT_NOREW 4 205 #define CT_STREAM 8 206 #define UNIT(x) (minor(x) & 3) 207 #define ctpunit(x) ((x) & 7) 208 209 #ifdef DEBUG 210 int ctdebug = 0; 211 #define CDB_FILES 0x01 212 #define CT_BSF 0x02 213 #endif 214 215 int 216 ctmatch(parent, match, aux) 217 struct device *parent; 218 struct cfdata *match; 219 void *aux; 220 { 221 struct hpibbus_attach_args *ha = aux; 222 223 return (ctident(parent, NULL, ha)); 224 } 225 226 void 227 ctattach(parent, self, aux) 228 struct device *parent, *self; 229 void *aux; 230 { 231 struct ct_softc *sc = (struct ct_softc *)self; 232 struct hpibbus_attach_args *ha = aux; 233 234 if (ctident(parent, sc, ha) == 0) { 235 printf("\n%s: didn't respond to describe command!\n", 236 sc->sc_dev.dv_xname); 237 return; 238 } 239 240 sc->sc_slave = ha->ha_slave; 241 sc->sc_punit = ha->ha_punit; 242 243 bufq_alloc(&sc->sc_tab, BUFQ_FCFS); 244 245 /* Initialize hpib job queue entry. */ 246 sc->sc_hq.hq_softc = sc; 247 sc->sc_hq.hq_slave = sc->sc_slave; 248 sc->sc_hq.hq_start = ctstart; 249 sc->sc_hq.hq_go = ctgo; 250 sc->sc_hq.hq_intr = ctintr; 251 252 ctreset(sc); 253 sc->sc_flags |= CTF_ALIVE; 254 } 255 256 int 257 ctident(parent, sc, ha) 258 struct device *parent; 259 struct ct_softc *sc; 260 struct hpibbus_attach_args *ha; 261 { 262 struct ct_describe desc; 263 u_char stat, cmd[3]; 264 char name[7]; 265 int i, id, n, type, canstream; 266 267 type = canstream = 0; 268 269 /* Verify that we have a CS80 device. */ 270 if ((ha->ha_id & 0x200) == 0) 271 return (0); 272 273 /* Is it one of the tapes we support? */ 274 for (id = 0; id < nctinfo; id++) 275 if (ha->ha_id == ctinfo[id].hwid) 276 break; 277 if (id == nctinfo) 278 return (0); 279 280 ha->ha_punit = ctinfo[id].punit; 281 282 /* 283 * So far, so good. Get drive parameters. Note command 284 * is always issued to unit 0. 285 */ 286 cmd[0] = C_SUNIT(0); 287 cmd[1] = C_SVOL(0); 288 cmd[2] = C_DESC; 289 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 290 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 291 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 292 293 memset(name, 0, sizeof(name)); 294 if (stat == 0) { 295 n = desc.d_name; 296 for (i = 5; i >= 0; i--) { 297 name[i] = (n & 0xf) + '0'; 298 n >>= 4; 299 } 300 } 301 302 switch (ha->ha_id) { 303 case CT7946ID: 304 if (memcmp(name, "079450", 6) == 0) 305 return (0); /* not really a 7946 */ 306 /* fall into... */ 307 case CT9144ID: 308 case CT9145ID: 309 case CT35401ID: 310 type = CT9144; 311 canstream = 1; 312 break; 313 314 case CT7912PID: 315 case CT7914PID: 316 type = CT88140; 317 break; 318 } 319 320 if (sc != NULL) { 321 sc->sc_type = type; 322 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 323 printf(": %s %stape\n", ctinfo[id].desc, 324 canstream ? "streaming " : ""); 325 } 326 327 return (1); 328 } 329 330 void 331 ctreset(sc) 332 struct ct_softc *sc; 333 { 334 int ctlr, slave; 335 u_char stat; 336 337 ctlr = sc->sc_dev.dv_parent->dv_unit; 338 slave = sc->sc_slave; 339 340 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 341 sc->sc_clear.cmd = C_CLEAR; 342 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 343 hpibswait(ctlr, slave); 344 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 345 346 sc->sc_src.unit = C_SUNIT(CTCTLR); 347 sc->sc_src.nop = C_NOP; 348 sc->sc_src.cmd = C_SREL; 349 sc->sc_src.param = C_REL; 350 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 351 hpibswait(ctlr, slave); 352 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 353 354 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 355 sc->sc_ssmc.cmd = C_SSM; 356 sc->sc_ssmc.refm = REF_MASK; 357 sc->sc_ssmc.fefm = FEF_MASK; 358 sc->sc_ssmc.aefm = AEF_MASK; 359 sc->sc_ssmc.iefm = IEF_MASK; 360 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 361 hpibswait(ctlr, slave); 362 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 363 364 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 365 sc->sc_soptc.nop = C_NOP; 366 sc->sc_soptc.cmd = C_SOPT; 367 sc->sc_soptc.opt = C_SPAR; 368 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 369 hpibswait(ctlr, slave); 370 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 371 } 372 373 /*ARGSUSED*/ 374 int 375 ctopen(dev, flag, type, p) 376 dev_t dev; 377 int flag, type; 378 struct proc *p; 379 { 380 struct ct_softc *sc; 381 u_char stat; 382 int cc, ctlr, slave; 383 384 if (UNIT(dev) >= ct_cd.cd_ndevs || 385 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 386 (sc->sc_flags & CTF_ALIVE) == 0) 387 return (ENXIO); 388 389 if (sc->sc_flags & CTF_OPEN) 390 return (EBUSY); 391 392 ctlr = sc->sc_dev.dv_parent->dv_unit; 393 slave = sc->sc_slave; 394 395 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 396 sc->sc_soptc.nop = C_NOP; 397 sc->sc_soptc.cmd = C_SOPT; 398 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 399 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 400 else 401 sc->sc_soptc.opt = C_SPAR; 402 403 /* 404 * Check the return of hpibsend() and hpibswait(). 405 * Drive could be loading/unloading a tape. If not checked, 406 * driver hangs. 407 */ 408 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 409 if (cc != sizeof(sc->sc_soptc)) 410 return (EBUSY); 411 412 hpibswait(ctlr, slave); 413 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 414 if (cc != sizeof(stat)) 415 return(EBUSY); 416 417 sc->sc_tpr = tprintf_open(p); 418 sc->sc_flags |= CTF_OPEN; 419 return(0); 420 } 421 422 /*ARGSUSED*/ 423 int 424 ctclose(dev, flag, fmt, p) 425 dev_t dev; 426 int flag, fmt; 427 struct proc *p; 428 { 429 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 430 431 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 432 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 433 ctcommand(dev, MTWEOF, 2); 434 ctcommand(dev, MTBSR, 1); 435 if (sc->sc_eofp == EOFS - 1) 436 sc->sc_eofs[EOFS - 1]--; 437 else 438 sc->sc_eofp--; 439 #ifdef DEBUG 440 if(ctdebug & CT_BSF) 441 printf("%s: ctclose backup eofs prt %d blk %d\n", 442 sc->sc_dev.dv_xname, sc->sc_eofp, 443 sc->sc_eofs[sc->sc_eofp]); 444 #endif 445 } 446 if ((minor(dev) & CT_NOREW) == 0) 447 ctcommand(dev, MTREW, 1); 448 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 449 tprintf_close(sc->sc_tpr); 450 #ifdef DEBUG 451 if (ctdebug & CDB_FILES) 452 printf("ctclose: flags %x\n", sc->sc_flags); 453 #endif 454 return(0); /* XXX */ 455 } 456 457 void 458 ctcommand(dev, cmd, cnt) 459 dev_t dev; 460 int cmd; 461 int cnt; 462 { 463 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 464 struct buf *bp = &sc->sc_bufstore; 465 struct buf *nbp = 0; 466 467 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 468 cnt = sc->sc_eofs[EOFS - 1] - cnt; 469 ctcommand(dev, MTREW, 1); 470 ctcommand(dev, MTFSF, cnt); 471 cnt = 2; 472 cmd = MTBSR; 473 } 474 475 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 476 cnt = 1; 477 cmd = MTREW; 478 } 479 480 sc->sc_flags |= CTF_CMD; 481 sc->sc_bp = bp; 482 sc->sc_cmd = cmd; 483 bp->b_dev = dev; 484 if (cmd == MTFSF) { 485 nbp = (struct buf *)geteblk(MAXBSIZE); 486 bp->b_data = nbp->b_data; 487 bp->b_bcount = MAXBSIZE; 488 } 489 490 while (cnt-- > 0) { 491 bp->b_flags = B_BUSY; 492 if (cmd == MTBSF) { 493 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 494 sc->sc_eofp--; 495 #ifdef DEBUG 496 if (ctdebug & CT_BSF) 497 printf("%s: backup eof pos %d blk %d\n", 498 sc->sc_dev.dv_xname, sc->sc_eofp, 499 sc->sc_eofs[sc->sc_eofp]); 500 #endif 501 } 502 ctstrategy(bp); 503 biowait(bp); 504 } 505 bp->b_flags = 0; 506 sc->sc_flags &= ~CTF_CMD; 507 if (nbp) 508 brelse(nbp); 509 } 510 511 void 512 ctstrategy(bp) 513 struct buf *bp; 514 { 515 int s, unit; 516 struct ct_softc *sc; 517 518 unit = UNIT(bp->b_dev); 519 sc = ct_cd.cd_devs[unit]; 520 521 s = splbio(); 522 BUFQ_PUT(&sc->sc_tab, bp); 523 if (sc->sc_active == 0) { 524 sc->sc_active = 1; 525 ctustart(sc); 526 } 527 splx(s); 528 } 529 530 void 531 ctustart(sc) 532 struct ct_softc *sc; 533 { 534 struct buf *bp; 535 536 bp = BUFQ_PEEK(&sc->sc_tab); 537 sc->sc_addr = bp->b_data; 538 sc->sc_resid = bp->b_bcount; 539 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 540 ctstart(sc); 541 } 542 543 void 544 ctstart(arg) 545 void *arg; 546 { 547 struct ct_softc *sc = arg; 548 struct buf *bp; 549 int i, ctlr, slave; 550 551 ctlr = sc->sc_dev.dv_parent->dv_unit; 552 slave = sc->sc_slave; 553 554 bp = BUFQ_PEEK(&sc->sc_tab); 555 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 556 switch(sc->sc_cmd) { 557 case MTFSF: 558 bp->b_flags |= B_READ; 559 goto mustio; 560 561 case MTBSF: 562 goto gotaddr; 563 564 case MTOFFL: 565 sc->sc_blkno = 0; 566 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 567 sc->sc_ul.cmd = C_UNLOAD; 568 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 569 sizeof(sc->sc_ul)); 570 break; 571 572 case MTWEOF: 573 sc->sc_blkno++; 574 sc->sc_flags |= CTF_WRT; 575 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 576 sc->sc_wfm.cmd = C_WFM; 577 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 578 sizeof(sc->sc_wfm)); 579 ctaddeof(sc); 580 break; 581 582 case MTBSR: 583 sc->sc_blkno--; 584 goto gotaddr; 585 586 case MTFSR: 587 sc->sc_blkno++; 588 goto gotaddr; 589 590 case MTREW: 591 sc->sc_blkno = 0; 592 #ifdef DEBUG 593 if(ctdebug & CT_BSF) 594 printf("%s: clearing eofs\n", 595 sc->sc_dev.dv_xname); 596 #endif 597 for (i=0; i<EOFS; i++) 598 sc->sc_eofs[i] = 0; 599 sc->sc_eofp = 0; 600 601 gotaddr: 602 sc->sc_ioc.saddr = C_SADDR; 603 sc->sc_ioc.addr0 = 0; 604 sc->sc_ioc.addr = sc->sc_blkno; 605 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 606 sc->sc_ioc.nop2 = C_NOP; 607 sc->sc_ioc.slen = C_SLEN; 608 sc->sc_ioc.len = 0; 609 sc->sc_ioc.nop3 = C_NOP; 610 sc->sc_ioc.cmd = C_READ; 611 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 612 sizeof(sc->sc_ioc)); 613 break; 614 } 615 } else { 616 mustio: 617 if ((bp->b_flags & B_READ) && 618 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 619 #ifdef DEBUG 620 if (ctdebug & CDB_FILES) 621 printf("ctstart: before flags %x\n", 622 sc->sc_flags); 623 #endif 624 if (sc->sc_flags & CTF_BEOF) { 625 sc->sc_flags &= ~CTF_BEOF; 626 sc->sc_flags |= CTF_AEOF; 627 #ifdef DEBUG 628 if (ctdebug & CDB_FILES) 629 printf("ctstart: after flags %x\n", 630 sc->sc_flags); 631 #endif 632 } 633 bp->b_resid = bp->b_bcount; 634 ctdone(sc, bp); 635 return; 636 } 637 sc->sc_flags |= CTF_IO; 638 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 639 sc->sc_ioc.saddr = C_SADDR; 640 sc->sc_ioc.addr0 = 0; 641 sc->sc_ioc.addr = sc->sc_blkno; 642 sc->sc_ioc.nop2 = C_NOP; 643 sc->sc_ioc.slen = C_SLEN; 644 sc->sc_ioc.len = sc->sc_resid; 645 sc->sc_ioc.nop3 = C_NOP; 646 if (bp->b_flags & B_READ) 647 sc->sc_ioc.cmd = C_READ; 648 else { 649 sc->sc_ioc.cmd = C_WRITE; 650 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 651 } 652 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 653 } 654 hpibawait(ctlr); 655 } 656 657 void 658 ctgo(arg) 659 void *arg; 660 { 661 struct ct_softc *sc = arg; 662 struct buf *bp; 663 int rw; 664 665 bp = BUFQ_PEEK(&sc->sc_tab); 666 rw = bp->b_flags & B_READ; 667 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 668 sc->sc_addr, sc->sc_resid, rw, rw != 0); 669 } 670 671 /* 672 * Hideous grue to handle EOF/EOT (mostly for reads) 673 */ 674 void 675 cteof(sc, bp) 676 struct ct_softc *sc; 677 struct buf *bp; 678 { 679 long blks; 680 681 /* 682 * EOT on a write is an error. 683 */ 684 if ((bp->b_flags & B_READ) == 0) { 685 bp->b_resid = bp->b_bcount; 686 bp->b_flags |= B_ERROR; 687 bp->b_error = ENOSPC; 688 sc->sc_flags |= CTF_EOT; 689 return; 690 } 691 /* 692 * Use returned block position to determine how many blocks 693 * we really read and update b_resid. 694 */ 695 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 696 #ifdef DEBUG 697 if (ctdebug & CDB_FILES) 698 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 699 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 700 blks, bp->b_bcount - CTKTOB(blks)); 701 #endif 702 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 703 blks = 0; 704 sc->sc_blkno++; 705 } 706 else { 707 sc->sc_blkno = sc->sc_stat.c_blk; 708 } 709 bp->b_resid = bp->b_bcount - CTKTOB(blks); 710 /* 711 * If we are at physical EOV or were after an EOF, 712 * we are now at logical EOT. 713 */ 714 if ((sc->sc_stat.c_aef & AEF_EOV) || 715 (sc->sc_flags & CTF_AEOF)) { 716 sc->sc_flags |= CTF_EOT; 717 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 718 } 719 /* 720 * If we were before an EOF or we have just completed a FSF, 721 * we are now after EOF. 722 */ 723 else if ((sc->sc_flags & CTF_BEOF) || 724 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 725 sc->sc_flags |= CTF_AEOF; 726 sc->sc_flags &= ~CTF_BEOF; 727 } 728 /* 729 * Otherwise if we read something we are now before EOF 730 * (and no longer after EOF). 731 */ 732 else if (blks) { 733 sc->sc_flags |= CTF_BEOF; 734 sc->sc_flags &= ~CTF_AEOF; 735 } 736 /* 737 * Finally, if we didn't read anything we just passed an EOF 738 */ 739 else 740 sc->sc_flags |= CTF_AEOF; 741 #ifdef DEBUG 742 if (ctdebug & CDB_FILES) 743 printf("cteof: leaving flags %x\n", sc->sc_flags); 744 #endif 745 } 746 747 /* ARGSUSED */ 748 void 749 ctintr(arg) 750 void *arg; 751 { 752 struct ct_softc *sc = arg; 753 struct buf *bp; 754 u_char stat; 755 int ctlr, slave, unit; 756 757 ctlr = sc->sc_dev.dv_parent->dv_unit; 758 slave = sc->sc_slave; 759 unit = sc->sc_dev.dv_unit; 760 761 bp = BUFQ_PEEK(&sc->sc_tab); 762 if (bp == NULL) { 763 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 764 return; 765 } 766 if (sc->sc_flags & CTF_IO) { 767 sc->sc_flags &= ~CTF_IO; 768 if (hpibustart(ctlr)) 769 ctgo(sc); 770 return; 771 } 772 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 773 if (hpibpptest(ctlr, slave) == 0) { 774 sc->sc_flags |= CTF_STATWAIT; 775 hpibawait(ctlr); 776 return; 777 } 778 } else 779 sc->sc_flags &= ~CTF_STATWAIT; 780 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 781 #ifdef DEBUG 782 if (ctdebug & CDB_FILES) 783 printf("ctintr: before flags %x\n", sc->sc_flags); 784 #endif 785 if (stat) { 786 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 787 sc->sc_rsc.cmd = C_STATUS; 788 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 789 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 790 sizeof(sc->sc_stat)); 791 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 792 #ifdef DEBUG 793 if (ctdebug & CDB_FILES) 794 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 795 stat, sc->sc_stat.c_aef, 796 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 797 #endif 798 if (stat == 0) { 799 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 800 cteof(sc, bp); 801 ctaddeof(sc); 802 goto done; 803 } 804 if (sc->sc_stat.c_fef & FEF_PF) { 805 ctreset(sc); 806 ctstart(sc); 807 return; 808 } 809 if (sc->sc_stat.c_fef & FEF_REXMT) { 810 ctstart(sc); 811 return; 812 } 813 if (sc->sc_stat.c_aef & 0x5800) { 814 if (sc->sc_stat.c_aef & 0x4000) 815 tprintf(sc->sc_tpr, 816 "%s: uninitialized media\n", 817 sc->sc_dev.dv_xname); 818 if (sc->sc_stat.c_aef & 0x1000) 819 tprintf(sc->sc_tpr, 820 "%s: not ready\n", 821 sc->sc_dev.dv_xname); 822 if (sc->sc_stat.c_aef & 0x0800) 823 tprintf(sc->sc_tpr, 824 "%s: write protect\n", 825 sc->sc_dev.dv_xname); 826 } else { 827 printf("%s err: v%d u%d ru%d bn%ld, ", 828 sc->sc_dev.dv_xname, 829 (sc->sc_stat.c_vu>>4)&0xF, 830 sc->sc_stat.c_vu&0xF, 831 sc->sc_stat.c_pend, 832 sc->sc_stat.c_blk); 833 printf("R0x%x F0x%x A0x%x I0x%x\n", 834 sc->sc_stat.c_ref, 835 sc->sc_stat.c_fef, 836 sc->sc_stat.c_aef, 837 sc->sc_stat.c_ief); 838 } 839 } else 840 printf("%s: request status failed\n", 841 sc->sc_dev.dv_xname); 842 bp->b_flags |= B_ERROR; 843 bp->b_error = EIO; 844 goto done; 845 } else 846 bp->b_resid = 0; 847 if (sc->sc_flags & CTF_CMD) { 848 switch (sc->sc_cmd) { 849 case MTFSF: 850 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 851 sc->sc_blkno += CTBTOK(sc->sc_resid); 852 ctstart(sc); 853 return; 854 case MTBSF: 855 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 856 break; 857 case MTBSR: 858 sc->sc_flags &= ~CTF_BEOF; 859 if (sc->sc_flags & CTF_EOT) { 860 sc->sc_flags |= CTF_AEOF; 861 sc->sc_flags &= ~CTF_EOT; 862 } else if (sc->sc_flags & CTF_AEOF) { 863 sc->sc_flags |= CTF_BEOF; 864 sc->sc_flags &= ~CTF_AEOF; 865 } 866 break; 867 case MTWEOF: 868 sc->sc_flags &= ~CTF_BEOF; 869 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 870 sc->sc_flags |= CTF_EOT; 871 sc->sc_flags &= ~CTF_AEOF; 872 } else 873 sc->sc_flags |= CTF_AEOF; 874 break; 875 case MTREW: 876 case MTOFFL: 877 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 878 break; 879 } 880 } else { 881 sc->sc_flags &= ~CTF_AEOF; 882 sc->sc_blkno += CTBTOK(sc->sc_resid); 883 } 884 done: 885 #ifdef DEBUG 886 if (ctdebug & CDB_FILES) 887 printf("ctintr: after flags %x\n", sc->sc_flags); 888 #endif 889 ctdone(sc, bp); 890 } 891 892 void 893 ctdone(sc, bp) 894 struct ct_softc *sc; 895 struct buf *bp; 896 { 897 898 (void)BUFQ_GET(&sc->sc_tab); 899 biodone(bp); 900 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 901 if (BUFQ_PEEK(&sc->sc_tab) == NULL) { 902 sc->sc_active = 0; 903 return; 904 } 905 ctustart(sc); 906 } 907 908 int 909 ctread(dev, uio, flags) 910 dev_t dev; 911 struct uio *uio; 912 int flags; 913 { 914 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 915 } 916 917 int 918 ctwrite(dev, uio, flags) 919 dev_t dev; 920 struct uio *uio; 921 int flags; 922 { 923 /* XXX: check for hardware write-protect? */ 924 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 925 } 926 927 /*ARGSUSED*/ 928 int 929 ctioctl(dev, cmd, data, flag, p) 930 dev_t dev; 931 u_long cmd; 932 int flag; 933 caddr_t data; 934 struct proc *p; 935 { 936 struct mtop *op; 937 int cnt; 938 939 switch (cmd) { 940 941 case MTIOCTOP: 942 op = (struct mtop *)data; 943 switch(op->mt_op) { 944 945 case MTWEOF: 946 case MTFSF: 947 case MTBSR: 948 case MTBSF: 949 case MTFSR: 950 cnt = op->mt_count; 951 break; 952 953 case MTREW: 954 case MTOFFL: 955 cnt = 1; 956 break; 957 958 default: 959 return(EINVAL); 960 } 961 ctcommand(dev, op->mt_op, cnt); 962 break; 963 964 case MTIOCGET: 965 break; 966 967 default: 968 return(EINVAL); 969 } 970 return(0); 971 } 972 973 void 974 ctaddeof(sc) 975 struct ct_softc *sc; 976 { 977 978 if (sc->sc_eofp == EOFS - 1) 979 sc->sc_eofs[EOFS - 1]++; 980 else { 981 sc->sc_eofp++; 982 if (sc->sc_eofp == EOFS - 1) 983 sc->sc_eofs[EOFS - 1] = EOFS; 984 else 985 /* save blkno */ 986 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 987 } 988 #ifdef DEBUG 989 if (ctdebug & CT_BSF) 990 printf("%s: add eof pos %d blk %d\n", 991 sc->sc_dev.dv_xname, sc->sc_eofp, 992 sc->sc_eofs[sc->sc_eofp]); 993 #endif 994 } 995
Indexes created Fri Sep 26 08:10:20 GMT 2025