ct.c revision 1.27
1 /* $NetBSD: ct.c,v 1.27 2014/07/25 08:10:36 dholland Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2003 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1988 University of Utah. 34 * Copyright (c) 1982, 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * the Systems Programming Group of the University of Utah Computer 39 * Science Department. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 66 * 67 * @(#)rd.c 8.2 (Berkeley) 5/19/94 68 */ 69 70 /* 71 * CS/80 cartridge tape driver (HP9144, HP88140, HP9145) 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 CS/80 disk driver 81 * finish support of HP9145 82 */ 83 84 #include <sys/cdefs.h> 85 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.27 2014/07/25 08:10:36 dholland Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/buf.h> 90 #include <sys/bufq.h> 91 #include <sys/conf.h> 92 #include <sys/device.h> 93 #include <sys/ioctl.h> 94 #include <sys/mtio.h> 95 #include <sys/proc.h> 96 #include <sys/tprintf.h> 97 98 #include <dev/gpib/ctreg.h> /* XXX must be before cs80busvar.h ATM */ 99 100 #include <dev/gpib/gpibvar.h> 101 #include <dev/gpib/cs80busvar.h> 102 103 /* number of eof marks to remember */ 104 #define EOFS 128 105 106 #ifdef DEBUG 107 int ctdebug = 0xff; 108 #define CDB_FILES 0x01 109 #define CDB_BSF 0x02 110 #define CDB_IDENT 0x04 111 #define CDB_FAIL 0x08 112 #define CDB_FOLLOW 0x10 113 #define DPRINTF(mask, str) if (ctdebug & (mask)) printf str 114 #else 115 #define DPRINTF(mask, str) /* nothing */ 116 #endif 117 118 struct ct_softc { 119 device_t sc_dev; 120 121 gpib_chipset_tag_t sc_ic; 122 gpib_handle_t sc_hdl; 123 124 int sc_slave; /* GPIB slave ID */ 125 int sc_punit; /* physical unit */ 126 struct ct_iocmd sc_ioc; 127 struct ct_rscmd sc_rsc; 128 struct cs80_stat sc_stat; 129 struct bufq_state *sc_tab; 130 int sc_active; 131 struct buf *sc_bp; 132 struct buf sc_bufstore; /* XXX */ 133 int sc_blkno; 134 int sc_cmd; 135 int sc_resid; 136 char *sc_addr; 137 int sc_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 short sc_type; 150 tpr_t sc_tpr; 151 int sc_eofp; 152 int sc_eofs[EOFS]; 153 }; 154 155 int ctmatch(device_t, cfdata_t, void *); 156 void ctattach(device_t, device_t, void *); 157 158 CFATTACH_DECL_NEW(ct, sizeof(struct ct_softc), 159 ctmatch, ctattach, NULL, NULL); 160 161 int ctident(device_t, struct ct_softc *, 162 struct cs80bus_attach_args *); 163 164 int ctlookup(int, int, int); 165 void ctaddeof(struct ct_softc *); 166 void ctustart(struct ct_softc *); 167 void cteof(struct ct_softc *, struct buf *); 168 void ctdone(struct ct_softc *, struct buf *); 169 170 void ctcallback(void *, int); 171 void ctstart(struct ct_softc *); 172 void ctintr(struct ct_softc *); 173 174 void ctcommand(dev_t, int, int); 175 176 dev_type_open(ctopen); 177 dev_type_close(ctclose); 178 dev_type_read(ctread); 179 dev_type_write(ctwrite); 180 dev_type_ioctl(ctioctl); 181 dev_type_strategy(ctstrategy); 182 183 const struct bdevsw ct_bdevsw = { 184 .d_open = ctopen, 185 .d_close = ctclose, 186 .d_strategy = ctstrategy, 187 .d_ioctl = ctioctl, 188 .d_dump = nodump, 189 .d_psize = nosize, 190 .d_discard = nodiscard, 191 .d_flag = D_TAPE 192 }; 193 194 const struct cdevsw ct_cdevsw = { 195 .d_open = ctopen, 196 .d_close = ctclose, 197 .d_read = ctread, 198 .d_write = ctwrite, 199 .d_ioctl = ctioctl, 200 .d_stop = nostop, 201 .d_tty = notty, 202 .d_poll = nopoll, 203 .d_mmap = nommap, 204 .d_kqfilter = nokqfilter, 205 .d_discard = nodiscard, 206 .d_flag = D_TAPE 207 }; 208 209 extern struct cfdriver ct_cd; 210 211 struct ctinfo { 212 short hwid; 213 short punit; 214 const char *desc; 215 } ctinfo[] = { 216 { CT7946ID, 1, "7946A" }, 217 { CT7912PID, 1, "7912P" }, 218 { CT7914PID, 1, "7914P" }, 219 { CT9144ID, 0, "9144" }, 220 { CT9145ID, 0, "9145" }, 221 { CT35401ID, 0, "35401A"}, 222 }; 223 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 224 225 #define CT_NOREW 4 226 #define CT_STREAM 8 227 #define CTUNIT(x) (minor(x) & 0x03) 228 229 int 230 ctlookup(int id, int slave, int punit) 231 { 232 int i; 233 234 for (i = 0; i < nctinfo; i++) 235 if (ctinfo[i].hwid == id) 236 break; 237 if (i == nctinfo) 238 return (-1); 239 return (i); 240 } 241 242 int 243 ctmatch(device_t parent, cfdata_t match, void *aux) 244 { 245 struct cs80bus_attach_args *ca = aux; 246 int i; 247 248 if ((i = ctlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) 249 return (0); 250 ca->ca_punit = ctinfo[i].punit; 251 return (1); 252 } 253 254 void 255 ctattach(device_t parent, device_t self, void *aux) 256 { 257 struct ct_softc *sc = device_private(self); 258 struct cs80bus_attach_args *ca = aux; 259 struct cs80_description csd; 260 char name[7]; 261 int type, i, n, canstream = 0; 262 263 sc->sc_ic = ca->ca_ic; 264 sc->sc_slave = ca->ca_slave; 265 sc->sc_punit = ca->ca_punit; 266 267 if ((type = ctlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) 268 return; 269 270 if (cs80reset(parent, sc->sc_slave, sc->sc_punit)) { 271 aprint_normal("\n"); 272 aprint_error_dev(sc->sc_dev, "can't reset device\n"); 273 return; 274 } 275 276 if (cs80describe(parent, sc->sc_slave, sc->sc_punit, &csd)) { 277 aprint_normal("\n"); 278 aprint_error_dev(sc->sc_dev, "didn't respond to describe command\n"); 279 return; 280 } 281 memset(name, 0, sizeof(name)); 282 for (i=0, n=0; i<3; i++) { 283 name[n++] = (csd.d_name[i] >> 4) + '0'; 284 name[n++] = (csd.d_name[i] & 0x0f) + '0'; 285 } 286 287 #ifdef DEBUG 288 if (ctdebug & CDB_IDENT) { 289 printf("\n%s: name: ('%s')\n", 290 device_xname(sc->sc_dev),name); 291 printf(" iuw %x, maxxfr %d, ctype %d\n", 292 csd.d_iuw, csd.d_cmaxxfr, csd.d_ctype); 293 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 294 csd.d_utype, csd.d_sectsize, 295 csd.d_blkbuf, csd.d_burstsize, csd.d_blocktime); 296 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 297 csd.d_uavexfr, csd.d_retry, csd.d_access, 298 csd.d_maxint, csd.d_fvbyte, csd.d_rvbyte); 299 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 300 csd.d_maxcylhead >> 8 , csd.d_maxcylhead & 0xff, 301 csd.d_maxsect, csd.d_maxvsectl, csd.d_interleave); 302 printf("%s", device_xname(sc->sc_dev)); 303 } 304 #endif 305 306 switch (ca->ca_id) { 307 case CT7946ID: 308 if (memcmp(name, "079450", 6) == 0) 309 return; /* not really a 7946 */ 310 /* fall into... */ 311 case CT9144ID: 312 case CT9145ID: 313 case CT35401ID: 314 sc->sc_type = CT9144; 315 canstream = 1; 316 break; 317 318 case CT7912PID: 319 case CT7914PID: 320 sc->sc_type = CT88140; 321 break; 322 default: 323 sc->sc_type = type; 324 break; 325 } 326 327 sc->sc_type = type; 328 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 329 printf(": %s %stape\n", ctinfo[type].desc, 330 canstream ? "streaming " : ""); 331 332 bufq_alloc(&sc->sc_tab, "fcfs", 0); 333 334 if (gpibregister(sc->sc_ic, sc->sc_slave, ctcallback, sc, 335 &sc->sc_hdl)) { 336 aprint_error_dev(sc->sc_dev, "can't register callback\n"); 337 return; 338 } 339 340 sc->sc_flags |= CTF_ALIVE; 341 } 342 343 /*ARGSUSED*/ 344 int 345 ctopen(dev_t dev, int flag, int type, struct lwp *l) 346 { 347 struct ct_softc *sc; 348 u_int8_t opt; 349 350 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 351 if (sc == NULL || (sc->sc_flags & CTF_ALIVE) == 0) 352 return (ENXIO); 353 354 if (sc->sc_flags & CTF_OPEN) 355 return (EBUSY); 356 357 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 358 opt = C_SPAR | C_IMRPT; 359 else 360 opt = C_SPAR; 361 362 if (cs80setoptions(device_parent(sc->sc_dev), sc->sc_slave, 363 sc->sc_punit, opt)) 364 return (EBUSY); 365 366 sc->sc_tpr = tprintf_open(l->l_proc); 367 sc->sc_flags |= CTF_OPEN; 368 369 return (0); 370 } 371 372 /*ARGSUSED*/ 373 int 374 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 375 { 376 struct ct_softc *sc; 377 378 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 379 if (sc == NULL) 380 return (ENXIO); 381 382 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 383 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 384 ctcommand(dev, MTWEOF, 2); 385 ctcommand(dev, MTBSR, 1); 386 if (sc->sc_eofp == EOFS - 1) 387 sc->sc_eofs[EOFS - 1]--; 388 else 389 sc->sc_eofp--; 390 DPRINTF(CDB_BSF, ("%s: ctclose backup eofs prt %d blk %d\n", 391 device_xname(sc->sc_dev), sc->sc_eofp, 392 sc->sc_eofs[sc->sc_eofp])); 393 } 394 395 if ((minor(dev) & CT_NOREW) == 0) 396 ctcommand(dev, MTREW, 1); 397 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 398 tprintf_close(sc->sc_tpr); 399 DPRINTF(CDB_FILES, ("ctclose: flags %x\n", sc->sc_flags)); 400 401 return (0); /* XXX */ 402 } 403 404 void 405 ctcommand(dev_t dev, int cmd, int cnt) 406 { 407 struct ct_softc *sc; 408 struct buf *bp; 409 struct buf *nbp = 0; 410 411 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 412 bp = &sc->sc_bufstore; 413 414 DPRINTF(CDB_FOLLOW, ("ctcommand: called\n")); 415 416 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 417 cnt = sc->sc_eofs[EOFS - 1] - cnt; 418 ctcommand(dev, MTREW, 1); 419 ctcommand(dev, MTFSF, cnt); 420 cnt = 2; 421 cmd = MTBSR; 422 } 423 424 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 425 cnt = 1; 426 cmd = MTREW; 427 } 428 429 sc->sc_flags |= CTF_CMD; 430 sc->sc_bp = bp; 431 sc->sc_cmd = cmd; 432 bp->b_dev = dev; 433 bp->b_objlock = &buffer_lock; 434 if (cmd == MTFSF) { 435 nbp = (struct buf *)geteblk(MAXBSIZE); 436 bp->b_data = nbp->b_data; 437 bp->b_bcount = MAXBSIZE; 438 } 439 440 while (cnt-- > 0) { 441 bp->b_flags = 0; 442 bp->b_cflags = BC_BUSY; 443 bp->b_oflags = 0; 444 if (cmd == MTBSF) { 445 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 446 sc->sc_eofp--; 447 DPRINTF(CDB_BSF, ("%s: backup eof pos %d blk %d\n", 448 device_xname(sc->sc_dev), sc->sc_eofp, 449 sc->sc_eofs[sc->sc_eofp])); 450 } 451 ctstrategy(bp); 452 biowait(bp); 453 } 454 bp->b_flags = 0; 455 sc->sc_flags &= ~CTF_CMD; 456 if (nbp) 457 brelse(nbp, 0); 458 } 459 460 void 461 ctstrategy(struct buf *bp) 462 { 463 struct ct_softc *sc; 464 int s; 465 466 DPRINTF(CDB_FOLLOW, ("cdstrategy(%p): dev %" PRIx64 ", bn %" PRIx64 467 ", bcount %x, %c\n", 468 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 469 (bp->b_flags & B_READ) ? 'R' : 'W')); 470 471 sc = device_lookup_private(&ct_cd, CTUNIT(bp->b_dev)); 472 473 s = splbio(); 474 bufq_put(sc->sc_tab, bp); 475 if (sc->sc_active == 0) { 476 sc->sc_active = 1; 477 ctustart(sc); 478 } 479 splx(s); 480 } 481 482 void 483 ctustart(struct ct_softc *sc) 484 { 485 struct buf *bp; 486 487 bp = bufq_peek(sc->sc_tab); 488 sc->sc_addr = bp->b_data; 489 sc->sc_resid = bp->b_bcount; 490 if (gpibrequest(sc->sc_ic, sc->sc_hdl)) 491 ctstart(sc); 492 } 493 494 void 495 ctstart(struct ct_softc *sc) 496 { 497 struct buf *bp; 498 struct ct_ulcmd ul; 499 struct ct_wfmcmd wfm; 500 int i, slave, punit; 501 502 slave = sc->sc_slave; 503 punit = sc->sc_punit; 504 505 bp = bufq_peek(sc->sc_tab); 506 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 507 switch(sc->sc_cmd) { 508 case MTFSF: 509 bp->b_flags |= B_READ; 510 goto mustio; 511 512 case MTBSF: 513 goto gotaddr; 514 515 case MTOFFL: 516 sc->sc_blkno = 0; 517 ul.unit = CS80CMD_SUNIT(punit); 518 ul.cmd = CS80CMD_UNLOAD; 519 (void) cs80send(device_parent(sc->sc_dev), slave, 520 punit, CS80CMD_SCMD, &ul, sizeof(ul)); 521 break; 522 523 case MTWEOF: 524 sc->sc_blkno++; 525 sc->sc_flags |= CTF_WRT; 526 wfm.unit = CS80CMD_SUNIT(sc->sc_punit); 527 wfm.cmd = CS80CMD_WFM; 528 (void) cs80send(device_parent(sc->sc_dev), slave, 529 punit, CS80CMD_SCMD, &wfm, sizeof(wfm)); 530 ctaddeof(sc); 531 break; 532 533 case MTBSR: 534 sc->sc_blkno--; 535 goto gotaddr; 536 537 case MTFSR: 538 sc->sc_blkno++; 539 goto gotaddr; 540 541 case MTREW: 542 sc->sc_blkno = 0; 543 DPRINTF(CDB_BSF, ("%s: clearing eofs\n", 544 device_xname(sc->sc_dev))); 545 for (i=0; i<EOFS; i++) 546 sc->sc_eofs[i] = 0; 547 sc->sc_eofp = 0; 548 549 gotaddr: 550 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 551 sc->sc_ioc.saddr = CS80CMD_SADDR; 552 sc->sc_ioc.addr0 = 0; 553 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 554 sc->sc_ioc.nop2 = CS80CMD_NOP; 555 sc->sc_ioc.slen = CS80CMD_SLEN; 556 sc->sc_ioc.len = htobe32(0); 557 sc->sc_ioc.nop3 = CS80CMD_NOP; 558 sc->sc_ioc.cmd = CS80CMD_READ; 559 (void) cs80send(device_parent(sc->sc_dev), slave, 560 punit, CS80CMD_SCMD, &sc->sc_ioc, 561 sizeof(sc->sc_ioc)); 562 break; 563 } 564 } else { 565 mustio: 566 if ((bp->b_flags & B_READ) && 567 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 568 DPRINTF(CDB_FILES, ("ctstart: before %x\n", 569 sc->sc_flags)); 570 if (sc->sc_flags & CTF_BEOF) { 571 sc->sc_flags &= ~CTF_BEOF; 572 sc->sc_flags |= CTF_AEOF; 573 DPRINTF(CDB_FILES, ("ctstart: after %x\n", 574 sc->sc_flags)); 575 } 576 bp->b_resid = bp->b_bcount; 577 ctdone(sc, bp); 578 return; 579 } 580 sc->sc_flags |= CTF_IO; 581 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 582 sc->sc_ioc.saddr = CS80CMD_SADDR; 583 sc->sc_ioc.addr0 = 0; 584 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 585 sc->sc_ioc.nop2 = CS80CMD_NOP; 586 sc->sc_ioc.slen = CS80CMD_SLEN; 587 sc->sc_ioc.len = htobe32(sc->sc_resid); 588 sc->sc_ioc.nop3 = CS80CMD_NOP; 589 if (bp->b_flags & B_READ) 590 sc->sc_ioc.cmd = CS80CMD_READ; 591 else { 592 sc->sc_ioc.cmd = CS80CMD_WRITE; 593 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 594 } 595 (void) cs80send(device_parent(sc->sc_dev), slave, punit, 596 CS80CMD_SCMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 597 } 598 gpibawait(sc->sc_ic); 599 } 600 601 /* 602 * Hideous grue to handle EOF/EOT (mostly for reads) 603 */ 604 void 605 cteof(struct ct_softc *sc, struct buf *bp) 606 { 607 long blks; 608 609 /* 610 * EOT on a write is an error. 611 */ 612 if ((bp->b_flags & B_READ) == 0) { 613 bp->b_resid = bp->b_bcount; 614 bp->b_error = ENOSPC; 615 sc->sc_flags |= CTF_EOT; 616 return; 617 } 618 /* 619 * Use returned block position to determine how many blocks 620 * we really read and update b_resid. 621 */ 622 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 623 DPRINTF(CDB_FILES, ("cteof: bc %d oblk %d nblk %d read %ld, resid %ld\n", 624 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 625 blks, bp->b_bcount - CTKTOB(blks))); 626 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 627 blks = 0; 628 sc->sc_blkno++; 629 } 630 else { 631 sc->sc_blkno = sc->sc_stat.c_blk; 632 } 633 bp->b_resid = bp->b_bcount - CTKTOB(blks); 634 /* 635 * If we are at physical EOV or were after an EOF, 636 * we are now at logical EOT. 637 */ 638 if ((sc->sc_stat.c_aef & AEF_EOV) || 639 (sc->sc_flags & CTF_AEOF)) { 640 sc->sc_flags |= CTF_EOT; 641 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 642 } 643 /* 644 * If we were before an EOF or we have just completed a FSF, 645 * we are now after EOF. 646 */ 647 else if ((sc->sc_flags & CTF_BEOF) || 648 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 649 sc->sc_flags |= CTF_AEOF; 650 sc->sc_flags &= ~CTF_BEOF; 651 } 652 /* 653 * Otherwise if we read something we are now before EOF 654 * (and no longer after EOF). 655 */ 656 else if (blks) { 657 sc->sc_flags |= CTF_BEOF; 658 sc->sc_flags &= ~CTF_AEOF; 659 } 660 /* 661 * Finally, if we didn't read anything we just passed an EOF 662 */ 663 else 664 sc->sc_flags |= CTF_AEOF; 665 DPRINTF(CDB_FILES, ("cteof: leaving flags %x\n", sc->sc_flags)); 666 } 667 668 669 void 670 ctcallback(void *v, int action) 671 { 672 struct ct_softc *sc = v; 673 674 DPRINTF(CDB_FOLLOW, ("ctcallback: v=%p, action=%d\n", v, action)); 675 676 switch (action) { 677 case GPIBCBF_START: 678 ctstart(sc); 679 break; 680 case GPIBCBF_INTR: 681 ctintr(sc); 682 break; 683 #ifdef DEBUG 684 default: 685 DPRINTF(CDB_FAIL, ("ctcallback: unknown action %d\n", action)); 686 break; 687 #endif 688 } 689 } 690 691 void 692 ctintr(struct ct_softc *sc) 693 { 694 struct buf *bp; 695 u_int8_t stat; 696 int slave, punit; 697 int dir; 698 699 slave = sc->sc_slave; 700 punit = sc->sc_punit; 701 702 bp = bufq_peek(sc->sc_tab); 703 if (bp == NULL) { 704 aprint_error_dev(sc->sc_dev, "bp == NULL\n"); 705 return; 706 } 707 if (sc->sc_flags & CTF_IO) { 708 sc->sc_flags &= ~CTF_IO; 709 dir = (bp->b_flags & B_READ ? GPIB_READ : GPIB_WRITE); 710 gpibxfer(sc->sc_ic, slave, CS80CMD_EXEC, sc->sc_addr, 711 sc->sc_resid, dir, dir == GPIB_READ); 712 return; 713 } 714 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 715 if (gpibpptest(sc->sc_ic, slave) == 0) { 716 sc->sc_flags |= CTF_STATWAIT; 717 gpibawait(sc->sc_ic); 718 return; 719 } 720 } else 721 sc->sc_flags &= ~CTF_STATWAIT; 722 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 723 DPRINTF(CDB_FILES, ("ctintr: before flags %x\n", sc->sc_flags)); 724 if (stat) { 725 sc->sc_rsc.unit = CS80CMD_SUNIT(punit); 726 sc->sc_rsc.cmd = CS80CMD_STATUS; 727 (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_rsc, 728 sizeof(sc->sc_rsc)); 729 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, &sc->sc_stat, 730 sizeof(sc->sc_stat)); 731 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 732 DPRINTF(CDB_FILES, ("ctintr: return stat 0x%x, A%x F%x blk %d\n", 733 stat, sc->sc_stat.c_aef, 734 sc->sc_stat.c_fef, sc->sc_stat.c_blk)); 735 if (stat == 0) { 736 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 737 cteof(sc, bp); 738 ctaddeof(sc); 739 goto done; 740 } 741 if (sc->sc_stat.c_fef & FEF_PF) { 742 cs80reset(sc, slave, punit); 743 ctstart(sc); 744 return; 745 } 746 if (sc->sc_stat.c_fef & FEF_REXMT) { 747 ctstart(sc); 748 return; 749 } 750 if (sc->sc_stat.c_aef & 0x5800) { 751 if (sc->sc_stat.c_aef & 0x4000) 752 tprintf(sc->sc_tpr, 753 "%s: uninitialized media\n", 754 device_xname(sc->sc_dev)); 755 if (sc->sc_stat.c_aef & 0x1000) 756 tprintf(sc->sc_tpr, 757 "%s: not ready\n", 758 device_xname(sc->sc_dev)); 759 if (sc->sc_stat.c_aef & 0x0800) 760 tprintf(sc->sc_tpr, 761 "%s: write protect\n", 762 device_xname(sc->sc_dev)); 763 } else { 764 printf("%s err: v%d u%d ru%d bn%d, ", 765 device_xname(sc->sc_dev), 766 (sc->sc_stat.c_vu>>4)&0xF, 767 sc->sc_stat.c_vu&0xF, 768 sc->sc_stat.c_pend, 769 sc->sc_stat.c_blk); 770 printf("R0x%x F0x%x A0x%x I0x%x\n", 771 sc->sc_stat.c_ref, 772 sc->sc_stat.c_fef, 773 sc->sc_stat.c_aef, 774 sc->sc_stat.c_ief); 775 } 776 } else 777 aprint_error_dev(sc->sc_dev, "request status failed\n"); 778 bp->b_error = EIO; 779 goto done; 780 } else 781 bp->b_resid = 0; 782 if (sc->sc_flags & CTF_CMD) { 783 switch (sc->sc_cmd) { 784 case MTFSF: 785 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 786 sc->sc_blkno += CTBTOK(sc->sc_resid); 787 ctstart(sc); 788 return; 789 case MTBSF: 790 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 791 break; 792 case MTBSR: 793 sc->sc_flags &= ~CTF_BEOF; 794 if (sc->sc_flags & CTF_EOT) { 795 sc->sc_flags |= CTF_AEOF; 796 sc->sc_flags &= ~CTF_EOT; 797 } else if (sc->sc_flags & CTF_AEOF) { 798 sc->sc_flags |= CTF_BEOF; 799 sc->sc_flags &= ~CTF_AEOF; 800 } 801 break; 802 case MTWEOF: 803 sc->sc_flags &= ~CTF_BEOF; 804 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 805 sc->sc_flags |= CTF_EOT; 806 sc->sc_flags &= ~CTF_AEOF; 807 } else 808 sc->sc_flags |= CTF_AEOF; 809 break; 810 case MTREW: 811 case MTOFFL: 812 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 813 break; 814 } 815 } else { 816 sc->sc_flags &= ~CTF_AEOF; 817 sc->sc_blkno += CTBTOK(sc->sc_resid); 818 } 819 done: 820 DPRINTF(CDB_FILES, ("ctintr: after flags %x\n", sc->sc_flags)); 821 ctdone(sc, bp); 822 } 823 824 void 825 ctdone(struct ct_softc *sc, struct buf *bp) 826 { 827 828 (void)bufq_get(sc->sc_tab); 829 biodone(bp); 830 gpibrelease(sc->sc_ic, sc->sc_hdl); 831 if (bufq_peek(sc->sc_tab) == NULL) { 832 sc->sc_active = 0; 833 return; 834 } 835 ctustart(sc); 836 } 837 838 int 839 ctread(dev_t dev, struct uio *uio, int flags) 840 { 841 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 842 } 843 844 int 845 ctwrite(dev_t dev, struct uio *uio, int flags) 846 { 847 /* XXX: check for hardware write-protect? */ 848 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 849 } 850 851 /*ARGSUSED*/ 852 int 853 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 854 { 855 struct mtop *op; 856 int cnt; 857 858 switch (cmd) { 859 860 case MTIOCTOP: 861 op = (struct mtop *)data; 862 switch(op->mt_op) { 863 864 case MTWEOF: 865 case MTFSF: 866 case MTBSR: 867 case MTBSF: 868 case MTFSR: 869 cnt = op->mt_count; 870 break; 871 872 case MTREW: 873 case MTOFFL: 874 cnt = 1; 875 break; 876 877 default: 878 return (EINVAL); 879 } 880 ctcommand(dev, op->mt_op, cnt); 881 break; 882 883 case MTIOCGET: 884 break; 885 886 default: 887 return (EINVAL); 888 } 889 return (0); 890 } 891 892 void 893 ctaddeof(struct ct_softc *sc) 894 { 895 896 if (sc->sc_eofp == EOFS - 1) 897 sc->sc_eofs[EOFS - 1]++; 898 else { 899 sc->sc_eofp++; 900 if (sc->sc_eofp == EOFS - 1) 901 sc->sc_eofs[EOFS - 1] = EOFS; 902 else 903 /* save blkno */ 904 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 905 } 906 DPRINTF(CDB_BSF, ("%s: add eof pos %d blk %d\n", 907 device_xname(sc->sc_dev), sc->sc_eofp, 908 sc->sc_eofs[sc->sc_eofp])); 909 } 910
Indexes created Thu Sep 25 06:09:39 GMT 2025