ct.c revision 1.38
1 /* $NetBSD: ct.c,v 1.38 2004/08/28 17:37:00 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. 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 1.38 2004/08/28 17:37:00 thorpej 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 static int ctmatch(struct device *, struct cfdata *, void *); 147 static void ctattach(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 static dev_type_open(ctopen); 155 static dev_type_close(ctclose); 156 static dev_type_read(ctread); 157 static dev_type_write(ctwrite); 158 static dev_type_ioctl(ctioctl); 159 static 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 static int ctident(struct device *, struct ct_softc *, 171 struct hpibbus_attach_args *); 172 173 static void ctreset(struct ct_softc *); 174 static void ctaddeof(struct ct_softc *); 175 static void ctustart(struct ct_softc *); 176 static void cteof(struct ct_softc *, struct buf *); 177 static void ctdone(struct ct_softc *, struct buf *); 178 179 static void ctstart(void *); 180 static void ctgo(void *); 181 static void ctintr(void *); 182 183 static void ctcommand(dev_t, int, int); 184 185 static const 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 static const 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 static int 211 ctmatch(struct device *parent, struct cfdata *match, void *aux) 212 { 213 struct hpibbus_attach_args *ha = aux; 214 215 return (ctident(parent, NULL, ha)); 216 } 217 218 static void 219 ctattach(struct device *parent, struct device *self, void *aux) 220 { 221 struct ct_softc *sc = (struct ct_softc *)self; 222 struct hpibbus_attach_args *ha = aux; 223 224 if (ctident(parent, sc, ha) == 0) { 225 printf("\n%s: didn't respond to describe command!\n", 226 sc->sc_dev.dv_xname); 227 return; 228 } 229 230 sc->sc_slave = ha->ha_slave; 231 sc->sc_punit = ha->ha_punit; 232 233 bufq_alloc(&sc->sc_tab, BUFQ_FCFS); 234 235 /* Initialize hpib job queue entry. */ 236 sc->sc_hq.hq_softc = sc; 237 sc->sc_hq.hq_slave = sc->sc_slave; 238 sc->sc_hq.hq_start = ctstart; 239 sc->sc_hq.hq_go = ctgo; 240 sc->sc_hq.hq_intr = ctintr; 241 242 ctreset(sc); 243 sc->sc_flags |= CTF_ALIVE; 244 } 245 246 static int 247 ctident(struct device *parent, struct ct_softc *sc, 248 struct hpibbus_attach_args *ha) 249 { 250 struct ct_describe desc; 251 u_char stat, cmd[3]; 252 char name[7]; 253 int i, id, n, type, canstream; 254 255 type = canstream = 0; 256 257 /* Verify that we have a CS80 device. */ 258 if ((ha->ha_id & 0x200) == 0) 259 return (0); 260 261 /* Is it one of the tapes we support? */ 262 for (id = 0; id < nctinfo; id++) 263 if (ha->ha_id == ctinfo[id].hwid) 264 break; 265 if (id == nctinfo) 266 return (0); 267 268 ha->ha_punit = ctinfo[id].punit; 269 270 /* 271 * So far, so good. Get drive parameters. Note command 272 * is always issued to unit 0. 273 */ 274 cmd[0] = C_SUNIT(0); 275 cmd[1] = C_SVOL(0); 276 cmd[2] = C_DESC; 277 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 278 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 279 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 280 281 memset(name, 0, sizeof(name)); 282 if (stat == 0) { 283 n = desc.d_name; 284 for (i = 5; i >= 0; i--) { 285 name[i] = (n & 0xf) + '0'; 286 n >>= 4; 287 } 288 } 289 290 switch (ha->ha_id) { 291 case CT7946ID: 292 if (memcmp(name, "079450", 6) == 0) 293 return (0); /* not really a 7946 */ 294 /* fall into... */ 295 case CT9144ID: 296 case CT9145ID: 297 case CT35401ID: 298 type = CT9144; 299 canstream = 1; 300 break; 301 302 case CT7912PID: 303 case CT7914PID: 304 type = CT88140; 305 break; 306 } 307 308 if (sc != NULL) { 309 sc->sc_type = type; 310 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 311 printf(": %s %stape\n", ctinfo[id].desc, 312 canstream ? "streaming " : ""); 313 } 314 315 return (1); 316 } 317 318 static void 319 ctreset(struct ct_softc *sc) 320 { 321 int ctlr, slave; 322 u_char stat; 323 324 ctlr = sc->sc_dev.dv_parent->dv_unit; 325 slave = sc->sc_slave; 326 327 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 328 sc->sc_clear.cmd = C_CLEAR; 329 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 330 hpibswait(ctlr, slave); 331 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 332 333 sc->sc_src.unit = C_SUNIT(CTCTLR); 334 sc->sc_src.nop = C_NOP; 335 sc->sc_src.cmd = C_SREL; 336 sc->sc_src.param = C_REL; 337 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 338 hpibswait(ctlr, slave); 339 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 340 341 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 342 sc->sc_ssmc.cmd = C_SSM; 343 sc->sc_ssmc.refm = REF_MASK; 344 sc->sc_ssmc.fefm = FEF_MASK; 345 sc->sc_ssmc.aefm = AEF_MASK; 346 sc->sc_ssmc.iefm = IEF_MASK; 347 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 348 hpibswait(ctlr, slave); 349 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 350 351 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 352 sc->sc_soptc.nop = C_NOP; 353 sc->sc_soptc.cmd = C_SOPT; 354 sc->sc_soptc.opt = C_SPAR; 355 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 356 hpibswait(ctlr, slave); 357 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 358 } 359 360 /*ARGSUSED*/ 361 static int 362 ctopen(dev_t dev, int flag, int type, 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 static int 408 ctclose(dev_t dev, int flag, int fmt, struct proc *p) 409 { 410 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 411 412 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 413 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 414 ctcommand(dev, MTWEOF, 2); 415 ctcommand(dev, MTBSR, 1); 416 if (sc->sc_eofp == EOFS - 1) 417 sc->sc_eofs[EOFS - 1]--; 418 else 419 sc->sc_eofp--; 420 #ifdef DEBUG 421 if(ctdebug & CT_BSF) 422 printf("%s: ctclose backup eofs prt %d blk %d\n", 423 sc->sc_dev.dv_xname, sc->sc_eofp, 424 sc->sc_eofs[sc->sc_eofp]); 425 #endif 426 } 427 if ((minor(dev) & CT_NOREW) == 0) 428 ctcommand(dev, MTREW, 1); 429 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 430 tprintf_close(sc->sc_tpr); 431 #ifdef DEBUG 432 if (ctdebug & CDB_FILES) 433 printf("ctclose: flags %x\n", sc->sc_flags); 434 #endif 435 return(0); /* XXX */ 436 } 437 438 static void 439 ctcommand(dev_t dev, int cmd, int cnt) 440 { 441 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 442 struct buf *bp = &sc->sc_bufstore; 443 struct buf *nbp = 0; 444 445 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 446 cnt = sc->sc_eofs[EOFS - 1] - cnt; 447 ctcommand(dev, MTREW, 1); 448 ctcommand(dev, MTFSF, cnt); 449 cnt = 2; 450 cmd = MTBSR; 451 } 452 453 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 454 cnt = 1; 455 cmd = MTREW; 456 } 457 458 sc->sc_flags |= CTF_CMD; 459 sc->sc_bp = bp; 460 sc->sc_cmd = cmd; 461 bp->b_dev = dev; 462 if (cmd == MTFSF) { 463 nbp = (struct buf *)geteblk(MAXBSIZE); 464 bp->b_data = nbp->b_data; 465 bp->b_bcount = MAXBSIZE; 466 } 467 468 while (cnt-- > 0) { 469 bp->b_flags = B_BUSY; 470 if (cmd == MTBSF) { 471 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 472 sc->sc_eofp--; 473 #ifdef DEBUG 474 if (ctdebug & CT_BSF) 475 printf("%s: backup eof pos %d blk %d\n", 476 sc->sc_dev.dv_xname, sc->sc_eofp, 477 sc->sc_eofs[sc->sc_eofp]); 478 #endif 479 } 480 ctstrategy(bp); 481 biowait(bp); 482 } 483 bp->b_flags = 0; 484 sc->sc_flags &= ~CTF_CMD; 485 if (nbp) 486 brelse(nbp); 487 } 488 489 static void 490 ctstrategy(struct buf *bp) 491 { 492 int s, unit; 493 struct ct_softc *sc; 494 495 unit = UNIT(bp->b_dev); 496 sc = ct_cd.cd_devs[unit]; 497 498 s = splbio(); 499 BUFQ_PUT(&sc->sc_tab, bp); 500 if (sc->sc_active == 0) { 501 sc->sc_active = 1; 502 ctustart(sc); 503 } 504 splx(s); 505 } 506 507 static void 508 ctustart(struct ct_softc *sc) 509 { 510 struct buf *bp; 511 512 bp = BUFQ_PEEK(&sc->sc_tab); 513 sc->sc_addr = bp->b_data; 514 sc->sc_resid = bp->b_bcount; 515 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 516 ctstart(sc); 517 } 518 519 static void 520 ctstart(void *arg) 521 { 522 struct ct_softc *sc = arg; 523 struct buf *bp; 524 int i, ctlr, slave; 525 526 ctlr = sc->sc_dev.dv_parent->dv_unit; 527 slave = sc->sc_slave; 528 529 bp = BUFQ_PEEK(&sc->sc_tab); 530 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 531 switch(sc->sc_cmd) { 532 case MTFSF: 533 bp->b_flags |= B_READ; 534 goto mustio; 535 536 case MTBSF: 537 goto gotaddr; 538 539 case MTOFFL: 540 sc->sc_blkno = 0; 541 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 542 sc->sc_ul.cmd = C_UNLOAD; 543 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 544 sizeof(sc->sc_ul)); 545 break; 546 547 case MTWEOF: 548 sc->sc_blkno++; 549 sc->sc_flags |= CTF_WRT; 550 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 551 sc->sc_wfm.cmd = C_WFM; 552 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 553 sizeof(sc->sc_wfm)); 554 ctaddeof(sc); 555 break; 556 557 case MTBSR: 558 sc->sc_blkno--; 559 goto gotaddr; 560 561 case MTFSR: 562 sc->sc_blkno++; 563 goto gotaddr; 564 565 case MTREW: 566 sc->sc_blkno = 0; 567 #ifdef DEBUG 568 if(ctdebug & CT_BSF) 569 printf("%s: clearing eofs\n", 570 sc->sc_dev.dv_xname); 571 #endif 572 for (i=0; i<EOFS; i++) 573 sc->sc_eofs[i] = 0; 574 sc->sc_eofp = 0; 575 576 gotaddr: 577 sc->sc_ioc.saddr = C_SADDR; 578 sc->sc_ioc.addr0 = 0; 579 sc->sc_ioc.addr = sc->sc_blkno; 580 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 581 sc->sc_ioc.nop2 = C_NOP; 582 sc->sc_ioc.slen = C_SLEN; 583 sc->sc_ioc.len = 0; 584 sc->sc_ioc.nop3 = C_NOP; 585 sc->sc_ioc.cmd = C_READ; 586 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 587 sizeof(sc->sc_ioc)); 588 break; 589 } 590 } else { 591 mustio: 592 if ((bp->b_flags & B_READ) && 593 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 594 #ifdef DEBUG 595 if (ctdebug & CDB_FILES) 596 printf("ctstart: before flags %x\n", 597 sc->sc_flags); 598 #endif 599 if (sc->sc_flags & CTF_BEOF) { 600 sc->sc_flags &= ~CTF_BEOF; 601 sc->sc_flags |= CTF_AEOF; 602 #ifdef DEBUG 603 if (ctdebug & CDB_FILES) 604 printf("ctstart: after flags %x\n", 605 sc->sc_flags); 606 #endif 607 } 608 bp->b_resid = bp->b_bcount; 609 ctdone(sc, bp); 610 return; 611 } 612 sc->sc_flags |= CTF_IO; 613 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 614 sc->sc_ioc.saddr = C_SADDR; 615 sc->sc_ioc.addr0 = 0; 616 sc->sc_ioc.addr = sc->sc_blkno; 617 sc->sc_ioc.nop2 = C_NOP; 618 sc->sc_ioc.slen = C_SLEN; 619 sc->sc_ioc.len = sc->sc_resid; 620 sc->sc_ioc.nop3 = C_NOP; 621 if (bp->b_flags & B_READ) 622 sc->sc_ioc.cmd = C_READ; 623 else { 624 sc->sc_ioc.cmd = C_WRITE; 625 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 626 } 627 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 628 } 629 hpibawait(ctlr); 630 } 631 632 static void 633 ctgo(void *arg) 634 { 635 struct ct_softc *sc = arg; 636 struct buf *bp; 637 int rw; 638 639 bp = BUFQ_PEEK(&sc->sc_tab); 640 rw = bp->b_flags & B_READ; 641 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 642 sc->sc_addr, sc->sc_resid, rw, rw != 0); 643 } 644 645 /* 646 * Hideous grue to handle EOF/EOT (mostly for reads) 647 */ 648 static void 649 cteof(struct ct_softc *sc, struct buf *bp) 650 { 651 long blks; 652 653 /* 654 * EOT on a write is an error. 655 */ 656 if ((bp->b_flags & B_READ) == 0) { 657 bp->b_resid = bp->b_bcount; 658 bp->b_flags |= B_ERROR; 659 bp->b_error = ENOSPC; 660 sc->sc_flags |= CTF_EOT; 661 return; 662 } 663 /* 664 * Use returned block position to determine how many blocks 665 * we really read and update b_resid. 666 */ 667 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 668 #ifdef DEBUG 669 if (ctdebug & CDB_FILES) 670 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 671 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 672 blks, bp->b_bcount - CTKTOB(blks)); 673 #endif 674 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 675 blks = 0; 676 sc->sc_blkno++; 677 } 678 else { 679 sc->sc_blkno = sc->sc_stat.c_blk; 680 } 681 bp->b_resid = bp->b_bcount - CTKTOB(blks); 682 /* 683 * If we are at physical EOV or were after an EOF, 684 * we are now at logical EOT. 685 */ 686 if ((sc->sc_stat.c_aef & AEF_EOV) || 687 (sc->sc_flags & CTF_AEOF)) { 688 sc->sc_flags |= CTF_EOT; 689 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 690 } 691 /* 692 * If we were before an EOF or we have just completed a FSF, 693 * we are now after EOF. 694 */ 695 else if ((sc->sc_flags & CTF_BEOF) || 696 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 697 sc->sc_flags |= CTF_AEOF; 698 sc->sc_flags &= ~CTF_BEOF; 699 } 700 /* 701 * Otherwise if we read something we are now before EOF 702 * (and no longer after EOF). 703 */ 704 else if (blks) { 705 sc->sc_flags |= CTF_BEOF; 706 sc->sc_flags &= ~CTF_AEOF; 707 } 708 /* 709 * Finally, if we didn't read anything we just passed an EOF 710 */ 711 else 712 sc->sc_flags |= CTF_AEOF; 713 #ifdef DEBUG 714 if (ctdebug & CDB_FILES) 715 printf("cteof: leaving flags %x\n", sc->sc_flags); 716 #endif 717 } 718 719 /* ARGSUSED */ 720 static void 721 ctintr(void *arg) 722 { 723 struct ct_softc *sc = arg; 724 struct buf *bp; 725 u_char stat; 726 int ctlr, slave, unit; 727 728 ctlr = sc->sc_dev.dv_parent->dv_unit; 729 slave = sc->sc_slave; 730 unit = sc->sc_dev.dv_unit; 731 732 bp = BUFQ_PEEK(&sc->sc_tab); 733 if (bp == NULL) { 734 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 735 return; 736 } 737 if (sc->sc_flags & CTF_IO) { 738 sc->sc_flags &= ~CTF_IO; 739 if (hpibustart(ctlr)) 740 ctgo(sc); 741 return; 742 } 743 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 744 if (hpibpptest(ctlr, slave) == 0) { 745 sc->sc_flags |= CTF_STATWAIT; 746 hpibawait(ctlr); 747 return; 748 } 749 } else 750 sc->sc_flags &= ~CTF_STATWAIT; 751 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 752 #ifdef DEBUG 753 if (ctdebug & CDB_FILES) 754 printf("ctintr: before flags %x\n", sc->sc_flags); 755 #endif 756 if (stat) { 757 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 758 sc->sc_rsc.cmd = C_STATUS; 759 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 760 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 761 sizeof(sc->sc_stat)); 762 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 763 #ifdef DEBUG 764 if (ctdebug & CDB_FILES) 765 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 766 stat, sc->sc_stat.c_aef, 767 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 768 #endif 769 if (stat == 0) { 770 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 771 cteof(sc, bp); 772 ctaddeof(sc); 773 goto done; 774 } 775 if (sc->sc_stat.c_fef & FEF_PF) { 776 ctreset(sc); 777 ctstart(sc); 778 return; 779 } 780 if (sc->sc_stat.c_fef & FEF_REXMT) { 781 ctstart(sc); 782 return; 783 } 784 if (sc->sc_stat.c_aef & 0x5800) { 785 if (sc->sc_stat.c_aef & 0x4000) 786 tprintf(sc->sc_tpr, 787 "%s: uninitialized media\n", 788 sc->sc_dev.dv_xname); 789 if (sc->sc_stat.c_aef & 0x1000) 790 tprintf(sc->sc_tpr, 791 "%s: not ready\n", 792 sc->sc_dev.dv_xname); 793 if (sc->sc_stat.c_aef & 0x0800) 794 tprintf(sc->sc_tpr, 795 "%s: write protect\n", 796 sc->sc_dev.dv_xname); 797 } else { 798 printf("%s err: v%d u%d ru%d bn%ld, ", 799 sc->sc_dev.dv_xname, 800 (sc->sc_stat.c_vu>>4)&0xF, 801 sc->sc_stat.c_vu&0xF, 802 sc->sc_stat.c_pend, 803 sc->sc_stat.c_blk); 804 printf("R0x%x F0x%x A0x%x I0x%x\n", 805 sc->sc_stat.c_ref, 806 sc->sc_stat.c_fef, 807 sc->sc_stat.c_aef, 808 sc->sc_stat.c_ief); 809 } 810 } else 811 printf("%s: request status failed\n", 812 sc->sc_dev.dv_xname); 813 bp->b_flags |= B_ERROR; 814 bp->b_error = EIO; 815 goto done; 816 } else 817 bp->b_resid = 0; 818 if (sc->sc_flags & CTF_CMD) { 819 switch (sc->sc_cmd) { 820 case MTFSF: 821 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 822 sc->sc_blkno += CTBTOK(sc->sc_resid); 823 ctstart(sc); 824 return; 825 case MTBSF: 826 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 827 break; 828 case MTBSR: 829 sc->sc_flags &= ~CTF_BEOF; 830 if (sc->sc_flags & CTF_EOT) { 831 sc->sc_flags |= CTF_AEOF; 832 sc->sc_flags &= ~CTF_EOT; 833 } else if (sc->sc_flags & CTF_AEOF) { 834 sc->sc_flags |= CTF_BEOF; 835 sc->sc_flags &= ~CTF_AEOF; 836 } 837 break; 838 case MTWEOF: 839 sc->sc_flags &= ~CTF_BEOF; 840 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 841 sc->sc_flags |= CTF_EOT; 842 sc->sc_flags &= ~CTF_AEOF; 843 } else 844 sc->sc_flags |= CTF_AEOF; 845 break; 846 case MTREW: 847 case MTOFFL: 848 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 849 break; 850 } 851 } else { 852 sc->sc_flags &= ~CTF_AEOF; 853 sc->sc_blkno += CTBTOK(sc->sc_resid); 854 } 855 done: 856 #ifdef DEBUG 857 if (ctdebug & CDB_FILES) 858 printf("ctintr: after flags %x\n", sc->sc_flags); 859 #endif 860 ctdone(sc, bp); 861 } 862 863 static void 864 ctdone(struct ct_softc *sc, struct buf *bp) 865 { 866 867 (void)BUFQ_GET(&sc->sc_tab); 868 biodone(bp); 869 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 870 if (BUFQ_PEEK(&sc->sc_tab) == NULL) { 871 sc->sc_active = 0; 872 return; 873 } 874 ctustart(sc); 875 } 876 877 static int 878 ctread(dev_t dev, struct uio *uio, int flags) 879 { 880 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 881 } 882 883 static int 884 ctwrite(dev_t dev, struct uio *uio, int flags) 885 { 886 /* XXX: check for hardware write-protect? */ 887 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 888 } 889 890 /*ARGSUSED*/ 891 static int 892 ctioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 893 { 894 struct mtop *op; 895 int cnt; 896 897 switch (cmd) { 898 899 case MTIOCTOP: 900 op = (struct mtop *)data; 901 switch(op->mt_op) { 902 903 case MTWEOF: 904 case MTFSF: 905 case MTBSR: 906 case MTBSF: 907 case MTFSR: 908 cnt = op->mt_count; 909 break; 910 911 case MTREW: 912 case MTOFFL: 913 cnt = 1; 914 break; 915 916 default: 917 return(EINVAL); 918 } 919 ctcommand(dev, op->mt_op, cnt); 920 break; 921 922 case MTIOCGET: 923 break; 924 925 default: 926 return(EINVAL); 927 } 928 return(0); 929 } 930 931 static void 932 ctaddeof(struct ct_softc *sc) 933 { 934 935 if (sc->sc_eofp == EOFS - 1) 936 sc->sc_eofs[EOFS - 1]++; 937 else { 938 sc->sc_eofp++; 939 if (sc->sc_eofp == EOFS - 1) 940 sc->sc_eofs[EOFS - 1] = EOFS; 941 else 942 /* save blkno */ 943 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 944 } 945 #ifdef DEBUG 946 if (ctdebug & CT_BSF) 947 printf("%s: add eof pos %d blk %d\n", 948 sc->sc_dev.dv_xname, sc->sc_eofp, 949 sc->sc_eofs[sc->sc_eofp]); 950 #endif 951 } 952
Indexes created Fri Sep 26 20:09:58 GMT 2025