1 /* $NetBSD: ct.c,v 1.28 2002/03/15 05:55:35 gmcgarry 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 1.28 2002/03/15 05:55:35 gmcgarry 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 buf_queue 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 int ctident __P((struct device *, struct ct_softc *, 160 struct hpibbus_attach_args *)); 161 162 void ctreset __P((struct ct_softc *)); 163 void ctaddeof __P((struct ct_softc *)); 164 void ctustart __P((struct ct_softc *)); 165 void cteof __P((struct ct_softc *, struct buf *)); 166 void ctdone __P((struct ct_softc *, struct buf *)); 167 168 void ctstart __P((void *)); 169 void ctgo __P((void *)); 170 void ctintr __P((void *)); 171 172 void ctcommand __P((dev_t, int, int)); 173 174 cdev_decl(ct); 175 bdev_decl(ct); 176 177 struct ctinfo { 178 short hwid; 179 short punit; 180 char *desc; 181 } ctinfo[] = { 182 { CT7946ID, 1, "7946A" }, 183 { CT7912PID, 1, "7912P" }, 184 { CT7914PID, 1, "7914P" }, 185 { CT9144ID, 0, "9144" }, 186 { CT9145ID, 0, "9145" }, 187 { CT35401ID, 0, "35401A"}, 188 }; 189 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 190 191 #define CT_NOREW 4 192 #define CT_STREAM 8 193 #define UNIT(x) (minor(x) & 3) 194 #define ctpunit(x) ((x) & 7) 195 196 #ifdef DEBUG 197 int ctdebug = 0; 198 #define CDB_FILES 0x01 199 #define CT_BSF 0x02 200 #endif 201 202 int 203 ctmatch(parent, match, aux) 204 struct device *parent; 205 struct cfdata *match; 206 void *aux; 207 { 208 struct hpibbus_attach_args *ha = aux; 209 210 return (ctident(parent, NULL, ha)); 211 } 212 213 void 214 ctattach(parent, self, aux) 215 struct device *parent, *self; 216 void *aux; 217 { 218 struct ct_softc *sc = (struct ct_softc *)self; 219 struct hpibbus_attach_args *ha = aux; 220 221 if (ctident(parent, sc, ha) == 0) { 222 printf("\n%s: didn't respond to describe command!\n", 223 sc->sc_dev.dv_xname); 224 return; 225 } 226 227 sc->sc_slave = ha->ha_slave; 228 sc->sc_punit = ha->ha_punit; 229 230 BUFQ_INIT(&sc->sc_tab); 231 232 /* Initialize hpib job queue entry. */ 233 sc->sc_hq.hq_softc = sc; 234 sc->sc_hq.hq_slave = sc->sc_slave; 235 sc->sc_hq.hq_start = ctstart; 236 sc->sc_hq.hq_go = ctgo; 237 sc->sc_hq.hq_intr = ctintr; 238 239 ctreset(sc); 240 sc->sc_flags |= CTF_ALIVE; 241 } 242 243 int 244 ctident(parent, sc, ha) 245 struct device *parent; 246 struct ct_softc *sc; 247 struct hpibbus_attach_args *ha; 248 { 249 struct ct_describe desc; 250 u_char stat, cmd[3]; 251 char name[7]; 252 int i, id, n, type, canstream; 253 254 type = canstream = 0; 255 256 /* Verify that we have a CS80 device. */ 257 if ((ha->ha_id & 0x200) == 0) 258 return (0); 259 260 /* Is it one of the tapes we support? */ 261 for (id = 0; id < nctinfo; id++) 262 if (ha->ha_id == ctinfo[id].hwid) 263 break; 264 if (id == nctinfo) 265 return (0); 266 267 ha->ha_punit = ctinfo[id].punit; 268 269 /* 270 * So far, so good. Get drive parameters. Note command 271 * is always issued to unit 0. 272 */ 273 cmd[0] = C_SUNIT(0); 274 cmd[1] = C_SVOL(0); 275 cmd[2] = C_DESC; 276 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 277 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 278 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 279 280 memset(name, 0, sizeof(name)); 281 if (stat == 0) { 282 n = desc.d_name; 283 for (i = 5; i >= 0; i--) { 284 name[i] = (n & 0xf) + '0'; 285 n >>= 4; 286 } 287 } 288 289 switch (ha->ha_id) { 290 case CT7946ID: 291 if (memcmp(name, "079450", 6) == 0) 292 return (0); /* not really a 7946 */ 293 /* fall into... */ 294 case CT9144ID: 295 case CT9145ID: 296 case CT35401ID: 297 type = CT9144; 298 canstream = 1; 299 break; 300 301 case CT7912PID: 302 case CT7914PID: 303 type = CT88140; 304 break; 305 } 306 307 if (sc != NULL) { 308 sc->sc_type = type; 309 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 310 printf(": %s %stape\n", ctinfo[id].desc, 311 canstream ? "streaming " : ""); 312 } 313 314 return (1); 315 } 316 317 void 318 ctreset(sc) 319 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 int 362 ctopen(dev, flag, type, p) 363 dev_t dev; 364 int flag, type; 365 struct proc *p; 366 { 367 struct ct_softc *sc; 368 u_char stat; 369 int cc, ctlr, slave; 370 371 if (UNIT(dev) >= ct_cd.cd_ndevs || 372 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 373 (sc->sc_flags & CTF_ALIVE) == 0) 374 return (ENXIO); 375 376 if (sc->sc_flags & CTF_OPEN) 377 return (EBUSY); 378 379 ctlr = sc->sc_dev.dv_parent->dv_unit; 380 slave = sc->sc_slave; 381 382 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 383 sc->sc_soptc.nop = C_NOP; 384 sc->sc_soptc.cmd = C_SOPT; 385 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 386 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 387 else 388 sc->sc_soptc.opt = C_SPAR; 389 390 /* 391 * Check the return of hpibsend() and hpibswait(). 392 * Drive could be loading/unloading a tape. If not checked, 393 * driver hangs. 394 */ 395 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 396 if (cc != sizeof(sc->sc_soptc)) 397 return (EBUSY); 398 399 hpibswait(ctlr, slave); 400 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 401 if (cc != sizeof(stat)) 402 return(EBUSY); 403 404 sc->sc_tpr = tprintf_open(p); 405 sc->sc_flags |= CTF_OPEN; 406 return(0); 407 } 408 409 /*ARGSUSED*/ 410 int 411 ctclose(dev, flag, fmt, p) 412 dev_t dev; 413 int flag, fmt; 414 struct proc *p; 415 { 416 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 417 418 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 419 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 420 ctcommand(dev, MTWEOF, 2); 421 ctcommand(dev, MTBSR, 1); 422 if (sc->sc_eofp == EOFS - 1) 423 sc->sc_eofs[EOFS - 1]--; 424 else 425 sc->sc_eofp--; 426 #ifdef DEBUG 427 if(ctdebug & CT_BSF) 428 printf("%s: ctclose backup eofs prt %d blk %d\n", 429 sc->sc_dev.dv_xname, sc->sc_eofp, 430 sc->sc_eofs[sc->sc_eofp]); 431 #endif 432 } 433 if ((minor(dev) & CT_NOREW) == 0) 434 ctcommand(dev, MTREW, 1); 435 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 436 tprintf_close(sc->sc_tpr); 437 #ifdef DEBUG 438 if (ctdebug & CDB_FILES) 439 printf("ctclose: flags %x\n", sc->sc_flags); 440 #endif 441 return(0); /* XXX */ 442 } 443 444 void 445 ctcommand(dev, cmd, cnt) 446 dev_t dev; 447 int cmd; 448 int cnt; 449 { 450 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 451 struct buf *bp = &sc->sc_bufstore; 452 struct buf *nbp = 0; 453 454 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 455 cnt = sc->sc_eofs[EOFS - 1] - cnt; 456 ctcommand(dev, MTREW, 1); 457 ctcommand(dev, MTFSF, cnt); 458 cnt = 2; 459 cmd = MTBSR; 460 } 461 462 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 463 cnt = 1; 464 cmd = MTREW; 465 } 466 467 sc->sc_flags |= CTF_CMD; 468 sc->sc_bp = bp; 469 sc->sc_cmd = cmd; 470 bp->b_dev = dev; 471 if (cmd == MTFSF) { 472 nbp = (struct buf *)geteblk(MAXBSIZE); 473 bp->b_data = nbp->b_data; 474 bp->b_bcount = MAXBSIZE; 475 } 476 477 while (cnt-- > 0) { 478 bp->b_flags = B_BUSY; 479 if (cmd == MTBSF) { 480 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 481 sc->sc_eofp--; 482 #ifdef DEBUG 483 if (ctdebug & CT_BSF) 484 printf("%s: backup eof pos %d blk %d\n", 485 sc->sc_dev.dv_xname, sc->sc_eofp, 486 sc->sc_eofs[sc->sc_eofp]); 487 #endif 488 } 489 ctstrategy(bp); 490 biowait(bp); 491 } 492 bp->b_flags = 0; 493 sc->sc_flags &= ~CTF_CMD; 494 if (nbp) 495 brelse(nbp); 496 } 497 498 void 499 ctstrategy(bp) 500 struct buf *bp; 501 { 502 int s, unit; 503 struct ct_softc *sc; 504 505 unit = UNIT(bp->b_dev); 506 sc = ct_cd.cd_devs[unit]; 507 508 s = splbio(); 509 BUFQ_INSERT_TAIL(&sc->sc_tab, bp); 510 if (sc->sc_active == 0) { 511 sc->sc_active = 1; 512 ctustart(sc); 513 } 514 splx(s); 515 } 516 517 void 518 ctustart(sc) 519 struct ct_softc *sc; 520 { 521 struct buf *bp; 522 523 bp = BUFQ_FIRST(&sc->sc_tab); 524 sc->sc_addr = bp->b_data; 525 sc->sc_resid = bp->b_bcount; 526 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 527 ctstart(sc); 528 } 529 530 void 531 ctstart(arg) 532 void *arg; 533 { 534 struct ct_softc *sc = arg; 535 struct buf *bp; 536 int i, ctlr, slave; 537 538 ctlr = sc->sc_dev.dv_parent->dv_unit; 539 slave = sc->sc_slave; 540 541 bp = BUFQ_FIRST(&sc->sc_tab); 542 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 543 switch(sc->sc_cmd) { 544 case MTFSF: 545 bp->b_flags |= B_READ; 546 goto mustio; 547 548 case MTBSF: 549 goto gotaddr; 550 551 case MTOFFL: 552 sc->sc_blkno = 0; 553 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 554 sc->sc_ul.cmd = C_UNLOAD; 555 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 556 sizeof(sc->sc_ul)); 557 break; 558 559 case MTWEOF: 560 sc->sc_blkno++; 561 sc->sc_flags |= CTF_WRT; 562 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 563 sc->sc_wfm.cmd = C_WFM; 564 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 565 sizeof(sc->sc_wfm)); 566 ctaddeof(sc); 567 break; 568 569 case MTBSR: 570 sc->sc_blkno--; 571 goto gotaddr; 572 573 case MTFSR: 574 sc->sc_blkno++; 575 goto gotaddr; 576 577 case MTREW: 578 sc->sc_blkno = 0; 579 #ifdef DEBUG 580 if(ctdebug & CT_BSF) 581 printf("%s: clearing eofs\n", 582 sc->sc_dev.dv_xname); 583 #endif 584 for (i=0; i<EOFS; i++) 585 sc->sc_eofs[i] = 0; 586 sc->sc_eofp = 0; 587 588 gotaddr: 589 sc->sc_ioc.saddr = C_SADDR; 590 sc->sc_ioc.addr0 = 0; 591 sc->sc_ioc.addr = sc->sc_blkno; 592 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 593 sc->sc_ioc.nop2 = C_NOP; 594 sc->sc_ioc.slen = C_SLEN; 595 sc->sc_ioc.len = 0; 596 sc->sc_ioc.nop3 = C_NOP; 597 sc->sc_ioc.cmd = C_READ; 598 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 599 sizeof(sc->sc_ioc)); 600 break; 601 } 602 } else { 603 mustio: 604 if ((bp->b_flags & B_READ) && 605 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 606 #ifdef DEBUG 607 if (ctdebug & CDB_FILES) 608 printf("ctstart: before flags %x\n", 609 sc->sc_flags); 610 #endif 611 if (sc->sc_flags & CTF_BEOF) { 612 sc->sc_flags &= ~CTF_BEOF; 613 sc->sc_flags |= CTF_AEOF; 614 #ifdef DEBUG 615 if (ctdebug & CDB_FILES) 616 printf("ctstart: after flags %x\n", 617 sc->sc_flags); 618 #endif 619 } 620 bp->b_resid = bp->b_bcount; 621 ctdone(sc, bp); 622 return; 623 } 624 sc->sc_flags |= CTF_IO; 625 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 626 sc->sc_ioc.saddr = C_SADDR; 627 sc->sc_ioc.addr0 = 0; 628 sc->sc_ioc.addr = sc->sc_blkno; 629 sc->sc_ioc.nop2 = C_NOP; 630 sc->sc_ioc.slen = C_SLEN; 631 sc->sc_ioc.len = sc->sc_resid; 632 sc->sc_ioc.nop3 = C_NOP; 633 if (bp->b_flags & B_READ) 634 sc->sc_ioc.cmd = C_READ; 635 else { 636 sc->sc_ioc.cmd = C_WRITE; 637 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 638 } 639 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 640 } 641 hpibawait(ctlr); 642 } 643 644 void 645 ctgo(arg) 646 void *arg; 647 { 648 struct ct_softc *sc = arg; 649 struct buf *bp; 650 int rw; 651 652 bp = BUFQ_FIRST(&sc->sc_tab); 653 rw = bp->b_flags & B_READ; 654 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 655 sc->sc_addr, sc->sc_resid, rw, rw != 0); 656 } 657 658 /* 659 * Hideous grue to handle EOF/EOT (mostly for reads) 660 */ 661 void 662 cteof(sc, bp) 663 struct ct_softc *sc; 664 struct buf *bp; 665 { 666 long blks; 667 668 /* 669 * EOT on a write is an error. 670 */ 671 if ((bp->b_flags & B_READ) == 0) { 672 bp->b_resid = bp->b_bcount; 673 bp->b_flags |= B_ERROR; 674 bp->b_error = ENOSPC; 675 sc->sc_flags |= CTF_EOT; 676 return; 677 } 678 /* 679 * Use returned block position to determine how many blocks 680 * we really read and update b_resid. 681 */ 682 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 683 #ifdef DEBUG 684 if (ctdebug & CDB_FILES) 685 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 686 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 687 blks, bp->b_bcount - CTKTOB(blks)); 688 #endif 689 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 690 blks = 0; 691 sc->sc_blkno++; 692 } 693 else { 694 sc->sc_blkno = sc->sc_stat.c_blk; 695 } 696 bp->b_resid = bp->b_bcount - CTKTOB(blks); 697 /* 698 * If we are at physical EOV or were after an EOF, 699 * we are now at logical EOT. 700 */ 701 if ((sc->sc_stat.c_aef & AEF_EOV) || 702 (sc->sc_flags & CTF_AEOF)) { 703 sc->sc_flags |= CTF_EOT; 704 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 705 } 706 /* 707 * If we were before an EOF or we have just completed a FSF, 708 * we are now after EOF. 709 */ 710 else if ((sc->sc_flags & CTF_BEOF) || 711 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 712 sc->sc_flags |= CTF_AEOF; 713 sc->sc_flags &= ~CTF_BEOF; 714 } 715 /* 716 * Otherwise if we read something we are now before EOF 717 * (and no longer after EOF). 718 */ 719 else if (blks) { 720 sc->sc_flags |= CTF_BEOF; 721 sc->sc_flags &= ~CTF_AEOF; 722 } 723 /* 724 * Finally, if we didn't read anything we just passed an EOF 725 */ 726 else 727 sc->sc_flags |= CTF_AEOF; 728 #ifdef DEBUG 729 if (ctdebug & CDB_FILES) 730 printf("cteof: leaving flags %x\n", sc->sc_flags); 731 #endif 732 } 733 734 /* ARGSUSED */ 735 void 736 ctintr(arg) 737 void *arg; 738 { 739 struct ct_softc *sc = arg; 740 struct buf *bp; 741 u_char stat; 742 int ctlr, slave, unit; 743 744 ctlr = sc->sc_dev.dv_parent->dv_unit; 745 slave = sc->sc_slave; 746 unit = sc->sc_dev.dv_unit; 747 748 bp = BUFQ_FIRST(&sc->sc_tab); 749 if (bp == NULL) { 750 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 751 return; 752 } 753 if (sc->sc_flags & CTF_IO) { 754 sc->sc_flags &= ~CTF_IO; 755 if (hpibustart(ctlr)) 756 ctgo(sc); 757 return; 758 } 759 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 760 if (hpibpptest(ctlr, slave) == 0) { 761 sc->sc_flags |= CTF_STATWAIT; 762 hpibawait(ctlr); 763 return; 764 } 765 } else 766 sc->sc_flags &= ~CTF_STATWAIT; 767 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 768 #ifdef DEBUG 769 if (ctdebug & CDB_FILES) 770 printf("ctintr: before flags %x\n", sc->sc_flags); 771 #endif 772 if (stat) { 773 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 774 sc->sc_rsc.cmd = C_STATUS; 775 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 776 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 777 sizeof(sc->sc_stat)); 778 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 779 #ifdef DEBUG 780 if (ctdebug & CDB_FILES) 781 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 782 stat, sc->sc_stat.c_aef, 783 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 784 #endif 785 if (stat == 0) { 786 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 787 cteof(sc, bp); 788 ctaddeof(sc); 789 goto done; 790 } 791 if (sc->sc_stat.c_fef & FEF_PF) { 792 ctreset(sc); 793 ctstart(sc); 794 return; 795 } 796 if (sc->sc_stat.c_fef & FEF_REXMT) { 797 ctstart(sc); 798 return; 799 } 800 if (sc->sc_stat.c_aef & 0x5800) { 801 if (sc->sc_stat.c_aef & 0x4000) 802 tprintf(sc->sc_tpr, 803 "%s: uninitialized media\n", 804 sc->sc_dev.dv_xname); 805 if (sc->sc_stat.c_aef & 0x1000) 806 tprintf(sc->sc_tpr, 807 "%s: not ready\n", 808 sc->sc_dev.dv_xname); 809 if (sc->sc_stat.c_aef & 0x0800) 810 tprintf(sc->sc_tpr, 811 "%s: write protect\n", 812 sc->sc_dev.dv_xname); 813 } else { 814 printf("%s err: v%d u%d ru%d bn%ld, ", 815 sc->sc_dev.dv_xname, 816 (sc->sc_stat.c_vu>>4)&0xF, 817 sc->sc_stat.c_vu&0xF, 818 sc->sc_stat.c_pend, 819 sc->sc_stat.c_blk); 820 printf("R0x%x F0x%x A0x%x I0x%x\n", 821 sc->sc_stat.c_ref, 822 sc->sc_stat.c_fef, 823 sc->sc_stat.c_aef, 824 sc->sc_stat.c_ief); 825 } 826 } else 827 printf("%s: request status failed\n", 828 sc->sc_dev.dv_xname); 829 bp->b_flags |= B_ERROR; 830 bp->b_error = EIO; 831 goto done; 832 } else 833 bp->b_resid = 0; 834 if (sc->sc_flags & CTF_CMD) { 835 switch (sc->sc_cmd) { 836 case MTFSF: 837 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 838 sc->sc_blkno += CTBTOK(sc->sc_resid); 839 ctstart(sc); 840 return; 841 case MTBSF: 842 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 843 break; 844 case MTBSR: 845 sc->sc_flags &= ~CTF_BEOF; 846 if (sc->sc_flags & CTF_EOT) { 847 sc->sc_flags |= CTF_AEOF; 848 sc->sc_flags &= ~CTF_EOT; 849 } else if (sc->sc_flags & CTF_AEOF) { 850 sc->sc_flags |= CTF_BEOF; 851 sc->sc_flags &= ~CTF_AEOF; 852 } 853 break; 854 case MTWEOF: 855 sc->sc_flags &= ~CTF_BEOF; 856 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 857 sc->sc_flags |= CTF_EOT; 858 sc->sc_flags &= ~CTF_AEOF; 859 } else 860 sc->sc_flags |= CTF_AEOF; 861 break; 862 case MTREW: 863 case MTOFFL: 864 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 865 break; 866 } 867 } else { 868 sc->sc_flags &= ~CTF_AEOF; 869 sc->sc_blkno += CTBTOK(sc->sc_resid); 870 } 871 done: 872 #ifdef DEBUG 873 if (ctdebug & CDB_FILES) 874 printf("ctintr: after flags %x\n", sc->sc_flags); 875 #endif 876 ctdone(sc, bp); 877 } 878 879 void 880 ctdone(sc, bp) 881 struct ct_softc *sc; 882 struct buf *bp; 883 { 884 885 BUFQ_REMOVE(&sc->sc_tab, bp); 886 biodone(bp); 887 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 888 if (BUFQ_FIRST(&sc->sc_tab) == NULL) { 889 sc->sc_active = 0; 890 return; 891 } 892 ctustart(sc); 893 } 894 895 int 896 ctread(dev, uio, flags) 897 dev_t dev; 898 struct uio *uio; 899 int flags; 900 { 901 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 902 } 903 904 int 905 ctwrite(dev, uio, flags) 906 dev_t dev; 907 struct uio *uio; 908 int flags; 909 { 910 /* XXX: check for hardware write-protect? */ 911 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 912 } 913 914 /*ARGSUSED*/ 915 int 916 ctioctl(dev, cmd, data, flag, p) 917 dev_t dev; 918 u_long cmd; 919 int flag; 920 caddr_t data; 921 struct proc *p; 922 { 923 struct mtop *op; 924 int cnt; 925 926 switch (cmd) { 927 928 case MTIOCTOP: 929 op = (struct mtop *)data; 930 switch(op->mt_op) { 931 932 case MTWEOF: 933 case MTFSF: 934 case MTBSR: 935 case MTBSF: 936 case MTFSR: 937 cnt = op->mt_count; 938 break; 939 940 case MTREW: 941 case MTOFFL: 942 cnt = 1; 943 break; 944 945 default: 946 return(EINVAL); 947 } 948 ctcommand(dev, op->mt_op, cnt); 949 break; 950 951 case MTIOCGET: 952 break; 953 954 default: 955 return(EINVAL); 956 } 957 return(0); 958 } 959 960 /* ARGSUSED */ 961 int 962 ctdump(dev, blkno, va, size) 963 dev_t dev; 964 daddr_t blkno; 965 caddr_t va; 966 size_t size; 967 { 968 969 return (ENODEV); 970 } 971 972 void 973 ctaddeof(sc) 974 struct ct_softc *sc; 975 { 976 977 if (sc->sc_eofp == EOFS - 1) 978 sc->sc_eofs[EOFS - 1]++; 979 else { 980 sc->sc_eofp++; 981 if (sc->sc_eofp == EOFS - 1) 982 sc->sc_eofs[EOFS - 1] = EOFS; 983 else 984 /* save blkno */ 985 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 986 } 987 #ifdef DEBUG 988 if (ctdebug & CT_BSF) 989 printf("%s: add eof pos %d blk %d\n", 990 sc->sc_dev.dv_xname, sc->sc_eofp, 991 sc->sc_eofs[sc->sc_eofp]); 992 #endif 993 } 994