ct.c revision 1.26.4.1
1 /* $NetBSD: ct.c,v 1.26.4.1 2001/10/10 11:56:04 fvdl 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 #include <sys/vnode.h> 98 #include <sys/vnode.h> 99 100 #include <hp300/dev/hpibvar.h> 101 102 #include <hp300/dev/ctreg.h> 103 104 /* number of eof marks to remember */ 105 #define EOFS 128 106 107 struct ct_softc { 108 struct device sc_dev; 109 int sc_slave; /* HP-IB slave ID */ 110 int sc_punit; /* physical unit */ 111 struct ct_iocmd sc_ioc; 112 struct ct_rscmd sc_rsc; 113 struct ct_stat sc_stat; 114 struct ct_ssmcmd sc_ssmc; 115 struct ct_srcmd sc_src; 116 struct ct_soptcmd sc_soptc; 117 struct ct_ulcmd sc_ul; 118 struct ct_wfmcmd sc_wfm; 119 struct ct_clearcmd sc_clear; 120 struct buf_queue sc_tab; 121 int sc_active; 122 struct buf *sc_bp; 123 struct buf sc_bufstore; /* XXX */ 124 int sc_blkno; 125 int sc_cmd; 126 int sc_resid; 127 char *sc_addr; 128 int sc_flags; 129 short sc_type; 130 tpr_t sc_tpr; 131 struct hpibqueue sc_hq; /* entry on hpib job queue */ 132 int sc_eofp; 133 int sc_eofs[EOFS]; 134 }; 135 136 /* flags */ 137 #define CTF_OPEN 0x01 138 #define CTF_ALIVE 0x02 139 #define CTF_WRT 0x04 140 #define CTF_CMD 0x08 141 #define CTF_IO 0x10 142 #define CTF_BEOF 0x20 143 #define CTF_AEOF 0x40 144 #define CTF_EOT 0x80 145 #define CTF_STATWAIT 0x100 146 #define CTF_CANSTREAM 0x200 147 #define CTF_WRTTN 0x400 148 149 int ctmatch __P((struct device *, struct cfdata *, void *)); 150 void ctattach __P((struct device *, struct device *, void *)); 151 152 struct cfattach ct_ca = { 153 sizeof(struct ct_softc), ctmatch, ctattach 154 }; 155 156 extern struct cfdriver ct_cd; 157 158 int ctident __P((struct device *, struct ct_softc *, 159 struct hpibbus_attach_args *)); 160 161 void ctreset __P((struct ct_softc *)); 162 void ctaddeof __P((struct ct_softc *)); 163 void ctustart __P((struct ct_softc *)); 164 void cteof __P((struct ct_softc *, struct buf *)); 165 void ctdone __P((struct ct_softc *, struct buf *)); 166 167 void ctstart __P((void *)); 168 void ctgo __P((void *)); 169 void ctintr __P((void *)); 170 171 void ctcommand __P((struct vnode *, int, int)); 172 173 cdev_decl(ct); 174 bdev_decl(ct); 175 176 struct ctinfo { 177 short hwid; 178 short punit; 179 char *desc; 180 } ctinfo[] = { 181 { CT7946ID, 1, "7946A" }, 182 { CT7912PID, 1, "7912P" }, 183 { CT7914PID, 1, "7914P" }, 184 { CT9144ID, 0, "9144" }, 185 { CT9145ID, 0, "9145" }, 186 { CT35401ID, 0, "35401A"}, 187 }; 188 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 189 190 #define CT_NOREW 4 191 #define CT_STREAM 8 192 #define UNIT(x) (minor(x) & 3) 193 #define ctpunit(x) ((x) & 7) 194 195 #ifdef DEBUG 196 int ctdebug = 0; 197 #define CDB_FILES 0x01 198 #define CT_BSF 0x02 199 #endif 200 201 int 202 ctmatch(parent, match, aux) 203 struct device *parent; 204 struct cfdata *match; 205 void *aux; 206 { 207 struct hpibbus_attach_args *ha = aux; 208 209 return (ctident(parent, NULL, ha)); 210 } 211 212 void 213 ctattach(parent, self, aux) 214 struct device *parent, *self; 215 void *aux; 216 { 217 struct ct_softc *sc = (struct ct_softc *)self; 218 struct hpibbus_attach_args *ha = aux; 219 220 if (ctident(parent, sc, ha) == 0) { 221 printf("\n%s: didn't respond to describe command!\n", 222 sc->sc_dev.dv_xname); 223 return; 224 } 225 226 sc->sc_slave = ha->ha_slave; 227 sc->sc_punit = ha->ha_punit; 228 229 BUFQ_INIT(&sc->sc_tab); 230 231 /* Initialize hpib job queue entry. */ 232 sc->sc_hq.hq_softc = sc; 233 sc->sc_hq.hq_slave = sc->sc_slave; 234 sc->sc_hq.hq_start = ctstart; 235 sc->sc_hq.hq_go = ctgo; 236 sc->sc_hq.hq_intr = ctintr; 237 238 ctreset(sc); 239 sc->sc_flags |= CTF_ALIVE; 240 } 241 242 int 243 ctident(parent, sc, ha) 244 struct device *parent; 245 struct ct_softc *sc; 246 struct hpibbus_attach_args *ha; 247 { 248 struct ct_describe desc; 249 u_char stat, cmd[3]; 250 char name[7]; 251 int i, id, n, type, canstream; 252 253 type = canstream = 0; 254 255 /* Verify that we have a CS80 device. */ 256 if ((ha->ha_id & 0x200) == 0) 257 return (0); 258 259 /* Is it one of the tapes we support? */ 260 for (id = 0; id < nctinfo; id++) 261 if (ha->ha_id == ctinfo[id].hwid) 262 break; 263 if (id == nctinfo) 264 return (0); 265 266 ha->ha_punit = ctinfo[id].punit; 267 268 /* 269 * So far, so good. Get drive parameters. Note command 270 * is always issued to unit 0. 271 */ 272 cmd[0] = C_SUNIT(0); 273 cmd[1] = C_SVOL(0); 274 cmd[2] = C_DESC; 275 hpibsend(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 276 hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37); 277 hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat)); 278 279 bzero(name, sizeof(name)); 280 if (stat == 0) { 281 n = desc.d_name; 282 for (i = 5; i >= 0; i--) { 283 name[i] = (n & 0xf) + '0'; 284 n >>= 4; 285 } 286 } 287 288 switch (ha->ha_id) { 289 case CT7946ID: 290 if (bcmp(name, "079450", 6) == 0) 291 return (0); /* not really a 7946 */ 292 /* fall into... */ 293 case CT9144ID: 294 case CT9145ID: 295 case CT35401ID: 296 type = CT9144; 297 canstream = 1; 298 break; 299 300 case CT7912PID: 301 case CT7914PID: 302 type = CT88140; 303 break; 304 } 305 306 if (sc != NULL) { 307 sc->sc_type = type; 308 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 309 printf(": %s %stape\n", ctinfo[id].desc, 310 canstream ? "streaming " : ""); 311 } 312 313 return (1); 314 } 315 316 void 317 ctreset(sc) 318 struct ct_softc *sc; 319 { 320 int ctlr, slave; 321 u_char stat; 322 323 ctlr = sc->sc_dev.dv_parent->dv_unit; 324 slave = sc->sc_slave; 325 326 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 327 sc->sc_clear.cmd = C_CLEAR; 328 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 329 hpibswait(ctlr, slave); 330 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 331 332 sc->sc_src.unit = C_SUNIT(CTCTLR); 333 sc->sc_src.nop = C_NOP; 334 sc->sc_src.cmd = C_SREL; 335 sc->sc_src.param = C_REL; 336 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 337 hpibswait(ctlr, slave); 338 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 339 340 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 341 sc->sc_ssmc.cmd = C_SSM; 342 sc->sc_ssmc.refm = REF_MASK; 343 sc->sc_ssmc.fefm = FEF_MASK; 344 sc->sc_ssmc.aefm = AEF_MASK; 345 sc->sc_ssmc.iefm = IEF_MASK; 346 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 347 hpibswait(ctlr, slave); 348 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 349 350 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 351 sc->sc_soptc.nop = C_NOP; 352 sc->sc_soptc.cmd = C_SOPT; 353 sc->sc_soptc.opt = C_SPAR; 354 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 355 hpibswait(ctlr, slave); 356 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 357 } 358 359 /*ARGSUSED*/ 360 int 361 ctopen(devvp, flag, type, p) 362 struct vnode *devvp; 363 int flag, type; 364 struct proc *p; 365 { 366 struct ct_softc *sc; 367 u_char stat; 368 int cc, ctlr, slave; 369 dev_t dev = vdev_rdev(devvp); 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 vdev_setprivdata(devvp, sc); 405 406 sc->sc_tpr = tprintf_open(p); 407 sc->sc_flags |= CTF_OPEN; 408 return(0); 409 } 410 411 /*ARGSUSED*/ 412 int 413 ctclose(devvp, flag, fmt, p) 414 struct vnode *devvp; 415 int flag, fmt; 416 struct proc *p; 417 { 418 struct ct_softc *sc; 419 420 sc = vdev_privdata(devvp); 421 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 422 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 423 ctcommand(devvp, MTWEOF, 2); 424 ctcommand(devvp, MTBSR, 1); 425 if (sc->sc_eofp == EOFS - 1) 426 sc->sc_eofs[EOFS - 1]--; 427 else 428 sc->sc_eofp--; 429 #ifdef DEBUG 430 if(ctdebug & CT_BSF) 431 printf("%s: ctclose backup eofs prt %d blk %d\n", 432 sc->sc_dev.dv_xname, sc->sc_eofp, 433 sc->sc_eofs[sc->sc_eofp]); 434 #endif 435 } 436 if ((minor(vdev_rdev(devvp)) & CT_NOREW) == 0) 437 ctcommand(devvp, MTREW, 1); 438 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 439 tprintf_close(sc->sc_tpr); 440 #ifdef DEBUG 441 if (ctdebug & CDB_FILES) 442 printf("ctclose: flags %x\n", sc->sc_flags); 443 #endif 444 return(0); /* XXX */ 445 } 446 447 void 448 ctcommand(devvp, cmd, cnt) 449 struct vnode *devvp; 450 int cmd; 451 int cnt; 452 { 453 struct ct_softc *sc = vdev_privdata(devvp); 454 struct buf *bp = &sc->sc_bufstore; 455 struct buf *nbp = 0; 456 457 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 458 cnt = sc->sc_eofs[EOFS - 1] - cnt; 459 ctcommand(devvp, MTREW, 1); 460 ctcommand(devvp, MTFSF, cnt); 461 cnt = 2; 462 cmd = MTBSR; 463 } 464 465 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 466 cnt = 1; 467 cmd = MTREW; 468 } 469 470 sc->sc_flags |= CTF_CMD; 471 sc->sc_bp = bp; 472 sc->sc_cmd = cmd; 473 bp->b_devvp = devvp; 474 if (cmd == MTFSF) { 475 nbp = (struct buf *)geteblk(MAXBSIZE); 476 bp->b_data = nbp->b_data; 477 bp->b_bcount = MAXBSIZE; 478 } 479 480 while (cnt-- > 0) { 481 bp->b_flags = B_BUSY; 482 if (cmd == MTBSF) { 483 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 484 sc->sc_eofp--; 485 #ifdef DEBUG 486 if (ctdebug & CT_BSF) 487 printf("%s: backup eof pos %d blk %d\n", 488 sc->sc_dev.dv_xname, sc->sc_eofp, 489 sc->sc_eofs[sc->sc_eofp]); 490 #endif 491 } 492 ctstrategy(bp); 493 biowait(bp); 494 } 495 bp->b_flags = 0; 496 sc->sc_flags &= ~CTF_CMD; 497 if (nbp) 498 brelse(nbp); 499 } 500 501 void 502 ctstrategy(bp) 503 struct buf *bp; 504 { 505 int s; 506 struct ct_softc *sc; 507 508 sc = vdev_privdata(bp->b_devvp); 509 510 s = splbio(); 511 BUFQ_INSERT_TAIL(&sc->sc_tab, bp); 512 if (sc->sc_active == 0) { 513 sc->sc_active = 1; 514 ctustart(sc); 515 } 516 splx(s); 517 } 518 519 void 520 ctustart(sc) 521 struct ct_softc *sc; 522 { 523 struct buf *bp; 524 525 bp = BUFQ_FIRST(&sc->sc_tab); 526 sc->sc_addr = bp->b_data; 527 sc->sc_resid = bp->b_bcount; 528 if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq)) 529 ctstart(sc); 530 } 531 532 void 533 ctstart(arg) 534 void *arg; 535 { 536 struct ct_softc *sc = arg; 537 struct buf *bp; 538 int i, ctlr, slave; 539 540 ctlr = sc->sc_dev.dv_parent->dv_unit; 541 slave = sc->sc_slave; 542 543 bp = BUFQ_FIRST(&sc->sc_tab); 544 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 545 switch(sc->sc_cmd) { 546 case MTFSF: 547 bp->b_flags |= B_READ; 548 goto mustio; 549 550 case MTBSF: 551 goto gotaddr; 552 553 case MTOFFL: 554 sc->sc_blkno = 0; 555 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 556 sc->sc_ul.cmd = C_UNLOAD; 557 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 558 sizeof(sc->sc_ul)); 559 break; 560 561 case MTWEOF: 562 sc->sc_blkno++; 563 sc->sc_flags |= CTF_WRT; 564 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 565 sc->sc_wfm.cmd = C_WFM; 566 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 567 sizeof(sc->sc_wfm)); 568 ctaddeof(sc); 569 break; 570 571 case MTBSR: 572 sc->sc_blkno--; 573 goto gotaddr; 574 575 case MTFSR: 576 sc->sc_blkno++; 577 goto gotaddr; 578 579 case MTREW: 580 sc->sc_blkno = 0; 581 #ifdef DEBUG 582 if(ctdebug & CT_BSF) 583 printf("%s: clearing eofs\n", 584 sc->sc_dev.dv_xname); 585 #endif 586 for (i=0; i<EOFS; i++) 587 sc->sc_eofs[i] = 0; 588 sc->sc_eofp = 0; 589 590 gotaddr: 591 sc->sc_ioc.saddr = C_SADDR; 592 sc->sc_ioc.addr0 = 0; 593 sc->sc_ioc.addr = sc->sc_blkno; 594 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 595 sc->sc_ioc.nop2 = C_NOP; 596 sc->sc_ioc.slen = C_SLEN; 597 sc->sc_ioc.len = 0; 598 sc->sc_ioc.nop3 = C_NOP; 599 sc->sc_ioc.cmd = C_READ; 600 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 601 sizeof(sc->sc_ioc)); 602 break; 603 } 604 } else { 605 mustio: 606 if ((bp->b_flags & B_READ) && 607 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 608 #ifdef DEBUG 609 if (ctdebug & CDB_FILES) 610 printf("ctstart: before flags %x\n", 611 sc->sc_flags); 612 #endif 613 if (sc->sc_flags & CTF_BEOF) { 614 sc->sc_flags &= ~CTF_BEOF; 615 sc->sc_flags |= CTF_AEOF; 616 #ifdef DEBUG 617 if (ctdebug & CDB_FILES) 618 printf("ctstart: after flags %x\n", 619 sc->sc_flags); 620 #endif 621 } 622 bp->b_resid = bp->b_bcount; 623 ctdone(sc, bp); 624 return; 625 } 626 sc->sc_flags |= CTF_IO; 627 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 628 sc->sc_ioc.saddr = C_SADDR; 629 sc->sc_ioc.addr0 = 0; 630 sc->sc_ioc.addr = sc->sc_blkno; 631 sc->sc_ioc.nop2 = C_NOP; 632 sc->sc_ioc.slen = C_SLEN; 633 sc->sc_ioc.len = sc->sc_resid; 634 sc->sc_ioc.nop3 = C_NOP; 635 if (bp->b_flags & B_READ) 636 sc->sc_ioc.cmd = C_READ; 637 else { 638 sc->sc_ioc.cmd = C_WRITE; 639 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 640 } 641 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 642 } 643 hpibawait(ctlr); 644 } 645 646 void 647 ctgo(arg) 648 void *arg; 649 { 650 struct ct_softc *sc = arg; 651 struct buf *bp; 652 int rw; 653 654 bp = BUFQ_FIRST(&sc->sc_tab); 655 rw = bp->b_flags & B_READ; 656 hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC, 657 sc->sc_addr, sc->sc_resid, rw, rw != 0); 658 } 659 660 /* 661 * Hideous grue to handle EOF/EOT (mostly for reads) 662 */ 663 void 664 cteof(sc, bp) 665 struct ct_softc *sc; 666 struct buf *bp; 667 { 668 long blks; 669 670 /* 671 * EOT on a write is an error. 672 */ 673 if ((bp->b_flags & B_READ) == 0) { 674 bp->b_resid = bp->b_bcount; 675 bp->b_flags |= B_ERROR; 676 bp->b_error = ENOSPC; 677 sc->sc_flags |= CTF_EOT; 678 return; 679 } 680 /* 681 * Use returned block position to determine how many blocks 682 * we really read and update b_resid. 683 */ 684 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 685 #ifdef DEBUG 686 if (ctdebug & CDB_FILES) 687 printf("cteof: bc %ld oblk %d nblk %ld read %ld, resid %ld\n", 688 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 689 blks, bp->b_bcount - CTKTOB(blks)); 690 #endif 691 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 692 blks = 0; 693 sc->sc_blkno++; 694 } 695 else { 696 sc->sc_blkno = sc->sc_stat.c_blk; 697 } 698 bp->b_resid = bp->b_bcount - CTKTOB(blks); 699 /* 700 * If we are at physical EOV or were after an EOF, 701 * we are now at logical EOT. 702 */ 703 if ((sc->sc_stat.c_aef & AEF_EOV) || 704 (sc->sc_flags & CTF_AEOF)) { 705 sc->sc_flags |= CTF_EOT; 706 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 707 } 708 /* 709 * If we were before an EOF or we have just completed a FSF, 710 * we are now after EOF. 711 */ 712 else if ((sc->sc_flags & CTF_BEOF) || 713 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 714 sc->sc_flags |= CTF_AEOF; 715 sc->sc_flags &= ~CTF_BEOF; 716 } 717 /* 718 * Otherwise if we read something we are now before EOF 719 * (and no longer after EOF). 720 */ 721 else if (blks) { 722 sc->sc_flags |= CTF_BEOF; 723 sc->sc_flags &= ~CTF_AEOF; 724 } 725 /* 726 * Finally, if we didn't read anything we just passed an EOF 727 */ 728 else 729 sc->sc_flags |= CTF_AEOF; 730 #ifdef DEBUG 731 if (ctdebug & CDB_FILES) 732 printf("cteof: leaving flags %x\n", sc->sc_flags); 733 #endif 734 } 735 736 /* ARGSUSED */ 737 void 738 ctintr(arg) 739 void *arg; 740 { 741 struct ct_softc *sc = arg; 742 struct buf *bp; 743 u_char stat; 744 int ctlr, slave, unit; 745 746 ctlr = sc->sc_dev.dv_parent->dv_unit; 747 slave = sc->sc_slave; 748 unit = sc->sc_dev.dv_unit; 749 750 bp = BUFQ_FIRST(&sc->sc_tab); 751 if (bp == NULL) { 752 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 753 return; 754 } 755 if (sc->sc_flags & CTF_IO) { 756 sc->sc_flags &= ~CTF_IO; 757 if (hpibustart(ctlr)) 758 ctgo(sc); 759 return; 760 } 761 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 762 if (hpibpptest(ctlr, slave) == 0) { 763 sc->sc_flags |= CTF_STATWAIT; 764 hpibawait(ctlr); 765 return; 766 } 767 } else 768 sc->sc_flags &= ~CTF_STATWAIT; 769 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 770 #ifdef DEBUG 771 if (ctdebug & CDB_FILES) 772 printf("ctintr: before flags %x\n", sc->sc_flags); 773 #endif 774 if (stat) { 775 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 776 sc->sc_rsc.cmd = C_STATUS; 777 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 778 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 779 sizeof(sc->sc_stat)); 780 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 781 #ifdef DEBUG 782 if (ctdebug & CDB_FILES) 783 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 784 stat, sc->sc_stat.c_aef, 785 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 786 #endif 787 if (stat == 0) { 788 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 789 cteof(sc, bp); 790 ctaddeof(sc); 791 goto done; 792 } 793 if (sc->sc_stat.c_fef & FEF_PF) { 794 ctreset(sc); 795 ctstart(sc); 796 return; 797 } 798 if (sc->sc_stat.c_fef & FEF_REXMT) { 799 ctstart(sc); 800 return; 801 } 802 if (sc->sc_stat.c_aef & 0x5800) { 803 if (sc->sc_stat.c_aef & 0x4000) 804 tprintf(sc->sc_tpr, 805 "%s: uninitialized media\n", 806 sc->sc_dev.dv_xname); 807 if (sc->sc_stat.c_aef & 0x1000) 808 tprintf(sc->sc_tpr, 809 "%s: not ready\n", 810 sc->sc_dev.dv_xname); 811 if (sc->sc_stat.c_aef & 0x0800) 812 tprintf(sc->sc_tpr, 813 "%s: write protect\n", 814 sc->sc_dev.dv_xname); 815 } else { 816 printf("%s err: v%d u%d ru%d bn%ld, ", 817 sc->sc_dev.dv_xname, 818 (sc->sc_stat.c_vu>>4)&0xF, 819 sc->sc_stat.c_vu&0xF, 820 sc->sc_stat.c_pend, 821 sc->sc_stat.c_blk); 822 printf("R0x%x F0x%x A0x%x I0x%x\n", 823 sc->sc_stat.c_ref, 824 sc->sc_stat.c_fef, 825 sc->sc_stat.c_aef, 826 sc->sc_stat.c_ief); 827 } 828 } else 829 printf("%s: request status failed\n", 830 sc->sc_dev.dv_xname); 831 bp->b_flags |= B_ERROR; 832 bp->b_error = EIO; 833 goto done; 834 } else 835 bp->b_resid = 0; 836 if (sc->sc_flags & CTF_CMD) { 837 switch (sc->sc_cmd) { 838 case MTFSF: 839 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 840 sc->sc_blkno += CTBTOK(sc->sc_resid); 841 ctstart(sc); 842 return; 843 case MTBSF: 844 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 845 break; 846 case MTBSR: 847 sc->sc_flags &= ~CTF_BEOF; 848 if (sc->sc_flags & CTF_EOT) { 849 sc->sc_flags |= CTF_AEOF; 850 sc->sc_flags &= ~CTF_EOT; 851 } else if (sc->sc_flags & CTF_AEOF) { 852 sc->sc_flags |= CTF_BEOF; 853 sc->sc_flags &= ~CTF_AEOF; 854 } 855 break; 856 case MTWEOF: 857 sc->sc_flags &= ~CTF_BEOF; 858 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 859 sc->sc_flags |= CTF_EOT; 860 sc->sc_flags &= ~CTF_AEOF; 861 } else 862 sc->sc_flags |= CTF_AEOF; 863 break; 864 case MTREW: 865 case MTOFFL: 866 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 867 break; 868 } 869 } else { 870 sc->sc_flags &= ~CTF_AEOF; 871 sc->sc_blkno += CTBTOK(sc->sc_resid); 872 } 873 done: 874 #ifdef DEBUG 875 if (ctdebug & CDB_FILES) 876 printf("ctintr: after flags %x\n", sc->sc_flags); 877 #endif 878 ctdone(sc, bp); 879 } 880 881 void 882 ctdone(sc, bp) 883 struct ct_softc *sc; 884 struct buf *bp; 885 { 886 887 BUFQ_REMOVE(&sc->sc_tab, bp); 888 biodone(bp); 889 hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq); 890 if (BUFQ_FIRST(&sc->sc_tab) == NULL) { 891 sc->sc_active = 0; 892 return; 893 } 894 ctustart(sc); 895 } 896 897 int 898 ctread(devvp, uio, flags) 899 struct vnode *devvp; 900 struct uio *uio; 901 int flags; 902 { 903 return (physio(ctstrategy, NULL, devvp, B_READ, minphys, uio)); 904 } 905 906 int 907 ctwrite(devvp, uio, flags) 908 struct vnode *devvp; 909 struct uio *uio; 910 int flags; 911 { 912 /* XXX: check for hardware write-protect? */ 913 return (physio(ctstrategy, NULL, devvp, B_WRITE, minphys, uio)); 914 } 915 916 /*ARGSUSED*/ 917 int 918 ctioctl(devvp, cmd, data, flag, p) 919 struct vnode *devvp; 920 u_long cmd; 921 int flag; 922 caddr_t data; 923 struct proc *p; 924 { 925 struct mtop *op; 926 int cnt; 927 928 switch (cmd) { 929 930 case MTIOCTOP: 931 op = (struct mtop *)data; 932 switch(op->mt_op) { 933 934 case MTWEOF: 935 case MTFSF: 936 case MTBSR: 937 case MTBSF: 938 case MTFSR: 939 cnt = op->mt_count; 940 break; 941 942 case MTREW: 943 case MTOFFL: 944 cnt = 1; 945 break; 946 947 default: 948 return(EINVAL); 949 } 950 ctcommand(devvp, op->mt_op, cnt); 951 break; 952 953 case MTIOCGET: 954 break; 955 956 default: 957 return(EINVAL); 958 } 959 return(0); 960 } 961 962 /* ARGSUSED */ 963 int 964 ctdump(dev, blkno, va, size) 965 dev_t dev; 966 daddr_t blkno; 967 caddr_t va; 968 size_t size; 969 { 970 971 return (ENODEV); 972 } 973 974 void 975 ctaddeof(sc) 976 struct ct_softc *sc; 977 { 978 979 if (sc->sc_eofp == EOFS - 1) 980 sc->sc_eofs[EOFS - 1]++; 981 else { 982 sc->sc_eofp++; 983 if (sc->sc_eofp == EOFS - 1) 984 sc->sc_eofs[EOFS - 1] = EOFS; 985 else 986 /* save blkno */ 987 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 988 } 989 #ifdef DEBUG 990 if (ctdebug & CT_BSF) 991 printf("%s: add eof pos %d blk %d\n", 992 sc->sc_dev.dv_xname, sc->sc_eofp, 993 sc->sc_eofs[sc->sc_eofp]); 994 #endif 995 } 996
Indexes created Fri Oct 17 03:10:13 GMT 2025