ct.c revision 1.28
1 /* $NetBSD: ct.c,v 1.28 2016/07/11 11:31:50 msaitoh 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 1.28 2016/07/11 11:31:50 msaitoh 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, 279 "didn't respond to describe command\n"); 280 return; 281 } 282 memset(name, 0, sizeof(name)); 283 for (i=0, n=0; i<3; i++) { 284 name[n++] = (csd.d_name[i] >> 4) + '0'; 285 name[n++] = (csd.d_name[i] & 0x0f) + '0'; 286 } 287 288 #ifdef DEBUG 289 if (ctdebug & CDB_IDENT) { 290 printf("\n%s: name: ('%s')\n", 291 device_xname(sc->sc_dev),name); 292 printf(" iuw %x, maxxfr %d, ctype %d\n", 293 csd.d_iuw, csd.d_cmaxxfr, csd.d_ctype); 294 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 295 csd.d_utype, csd.d_sectsize, 296 csd.d_blkbuf, csd.d_burstsize, csd.d_blocktime); 297 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 298 csd.d_uavexfr, csd.d_retry, csd.d_access, 299 csd.d_maxint, csd.d_fvbyte, csd.d_rvbyte); 300 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 301 csd.d_maxcylhead >> 8 , csd.d_maxcylhead & 0xff, 302 csd.d_maxsect, csd.d_maxvsectl, csd.d_interleave); 303 printf("%s", device_xname(sc->sc_dev)); 304 } 305 #endif 306 307 switch (ca->ca_id) { 308 case CT7946ID: 309 if (memcmp(name, "079450", 6) == 0) 310 return; /* not really a 7946 */ 311 /* fall into... */ 312 case CT9144ID: 313 case CT9145ID: 314 case CT35401ID: 315 sc->sc_type = CT9144; 316 canstream = 1; 317 break; 318 319 case CT7912PID: 320 case CT7914PID: 321 sc->sc_type = CT88140; 322 break; 323 default: 324 sc->sc_type = type; 325 break; 326 } 327 328 sc->sc_type = type; 329 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 330 printf(": %s %stape\n", ctinfo[type].desc, 331 canstream ? "streaming " : ""); 332 333 bufq_alloc(&sc->sc_tab, "fcfs", 0); 334 335 if (gpibregister(sc->sc_ic, sc->sc_slave, ctcallback, sc, 336 &sc->sc_hdl)) { 337 aprint_error_dev(sc->sc_dev, "can't register callback\n"); 338 return; 339 } 340 341 sc->sc_flags |= CTF_ALIVE; 342 } 343 344 /*ARGSUSED*/ 345 int 346 ctopen(dev_t dev, int flag, int type, struct lwp *l) 347 { 348 struct ct_softc *sc; 349 u_int8_t opt; 350 351 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 352 if (sc == NULL || (sc->sc_flags & CTF_ALIVE) == 0) 353 return (ENXIO); 354 355 if (sc->sc_flags & CTF_OPEN) 356 return (EBUSY); 357 358 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 359 opt = C_SPAR | C_IMRPT; 360 else 361 opt = C_SPAR; 362 363 if (cs80setoptions(device_parent(sc->sc_dev), sc->sc_slave, 364 sc->sc_punit, opt)) 365 return (EBUSY); 366 367 sc->sc_tpr = tprintf_open(l->l_proc); 368 sc->sc_flags |= CTF_OPEN; 369 370 return (0); 371 } 372 373 /*ARGSUSED*/ 374 int 375 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 376 { 377 struct ct_softc *sc; 378 379 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 380 if (sc == NULL) 381 return (ENXIO); 382 383 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 384 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 385 ctcommand(dev, MTWEOF, 2); 386 ctcommand(dev, MTBSR, 1); 387 if (sc->sc_eofp == EOFS - 1) 388 sc->sc_eofs[EOFS - 1]--; 389 else 390 sc->sc_eofp--; 391 DPRINTF(CDB_BSF, ("%s: ctclose backup eofs prt %d blk %d\n", 392 device_xname(sc->sc_dev), sc->sc_eofp, 393 sc->sc_eofs[sc->sc_eofp])); 394 } 395 396 if ((minor(dev) & CT_NOREW) == 0) 397 ctcommand(dev, MTREW, 1); 398 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 399 tprintf_close(sc->sc_tpr); 400 DPRINTF(CDB_FILES, ("ctclose: flags %x\n", sc->sc_flags)); 401 402 return (0); /* XXX */ 403 } 404 405 void 406 ctcommand(dev_t dev, int cmd, int cnt) 407 { 408 struct ct_softc *sc; 409 struct buf *bp; 410 struct buf *nbp = 0; 411 412 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 413 bp = &sc->sc_bufstore; 414 415 DPRINTF(CDB_FOLLOW, ("ctcommand: called\n")); 416 417 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 418 cnt = sc->sc_eofs[EOFS - 1] - cnt; 419 ctcommand(dev, MTREW, 1); 420 ctcommand(dev, MTFSF, cnt); 421 cnt = 2; 422 cmd = MTBSR; 423 } 424 425 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 426 cnt = 1; 427 cmd = MTREW; 428 } 429 430 sc->sc_flags |= CTF_CMD; 431 sc->sc_bp = bp; 432 sc->sc_cmd = cmd; 433 bp->b_dev = dev; 434 bp->b_objlock = &buffer_lock; 435 if (cmd == MTFSF) { 436 nbp = (struct buf *)geteblk(MAXBSIZE); 437 bp->b_data = nbp->b_data; 438 bp->b_bcount = MAXBSIZE; 439 } 440 441 while (cnt-- > 0) { 442 bp->b_flags = 0; 443 bp->b_cflags = BC_BUSY; 444 bp->b_oflags = 0; 445 if (cmd == MTBSF) { 446 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 447 sc->sc_eofp--; 448 DPRINTF(CDB_BSF, ("%s: backup eof pos %d blk %d\n", 449 device_xname(sc->sc_dev), sc->sc_eofp, 450 sc->sc_eofs[sc->sc_eofp])); 451 } 452 ctstrategy(bp); 453 biowait(bp); 454 } 455 bp->b_flags = 0; 456 sc->sc_flags &= ~CTF_CMD; 457 if (nbp) 458 brelse(nbp, 0); 459 } 460 461 void 462 ctstrategy(struct buf *bp) 463 { 464 struct ct_softc *sc; 465 int s; 466 467 DPRINTF(CDB_FOLLOW, ("cdstrategy(%p): dev %" PRIx64 ", bn %" PRIx64 468 ", bcount %x, %c\n", 469 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 470 (bp->b_flags & B_READ) ? 'R' : 'W')); 471 472 sc = device_lookup_private(&ct_cd, CTUNIT(bp->b_dev)); 473 474 s = splbio(); 475 bufq_put(sc->sc_tab, bp); 476 if (sc->sc_active == 0) { 477 sc->sc_active = 1; 478 ctustart(sc); 479 } 480 splx(s); 481 } 482 483 void 484 ctustart(struct ct_softc *sc) 485 { 486 struct buf *bp; 487 488 bp = bufq_peek(sc->sc_tab); 489 sc->sc_addr = bp->b_data; 490 sc->sc_resid = bp->b_bcount; 491 if (gpibrequest(sc->sc_ic, sc->sc_hdl)) 492 ctstart(sc); 493 } 494 495 void 496 ctstart(struct ct_softc *sc) 497 { 498 struct buf *bp; 499 struct ct_ulcmd ul; 500 struct ct_wfmcmd wfm; 501 int i, slave, punit; 502 503 slave = sc->sc_slave; 504 punit = sc->sc_punit; 505 506 bp = bufq_peek(sc->sc_tab); 507 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 508 switch(sc->sc_cmd) { 509 case MTFSF: 510 bp->b_flags |= B_READ; 511 goto mustio; 512 513 case MTBSF: 514 goto gotaddr; 515 516 case MTOFFL: 517 sc->sc_blkno = 0; 518 ul.unit = CS80CMD_SUNIT(punit); 519 ul.cmd = CS80CMD_UNLOAD; 520 (void) cs80send(device_parent(sc->sc_dev), slave, 521 punit, CS80CMD_SCMD, &ul, sizeof(ul)); 522 break; 523 524 case MTWEOF: 525 sc->sc_blkno++; 526 sc->sc_flags |= CTF_WRT; 527 wfm.unit = CS80CMD_SUNIT(sc->sc_punit); 528 wfm.cmd = CS80CMD_WFM; 529 (void) cs80send(device_parent(sc->sc_dev), slave, 530 punit, CS80CMD_SCMD, &wfm, sizeof(wfm)); 531 ctaddeof(sc); 532 break; 533 534 case MTBSR: 535 sc->sc_blkno--; 536 goto gotaddr; 537 538 case MTFSR: 539 sc->sc_blkno++; 540 goto gotaddr; 541 542 case MTREW: 543 sc->sc_blkno = 0; 544 DPRINTF(CDB_BSF, ("%s: clearing eofs\n", 545 device_xname(sc->sc_dev))); 546 for (i=0; i<EOFS; i++) 547 sc->sc_eofs[i] = 0; 548 sc->sc_eofp = 0; 549 550 gotaddr: 551 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 552 sc->sc_ioc.saddr = CS80CMD_SADDR; 553 sc->sc_ioc.addr0 = 0; 554 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 555 sc->sc_ioc.nop2 = CS80CMD_NOP; 556 sc->sc_ioc.slen = CS80CMD_SLEN; 557 sc->sc_ioc.len = htobe32(0); 558 sc->sc_ioc.nop3 = CS80CMD_NOP; 559 sc->sc_ioc.cmd = CS80CMD_READ; 560 (void) cs80send(device_parent(sc->sc_dev), slave, 561 punit, CS80CMD_SCMD, &sc->sc_ioc, 562 sizeof(sc->sc_ioc)); 563 break; 564 } 565 } else { 566 mustio: 567 if ((bp->b_flags & B_READ) && 568 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 569 DPRINTF(CDB_FILES, ("ctstart: before %x\n", 570 sc->sc_flags)); 571 if (sc->sc_flags & CTF_BEOF) { 572 sc->sc_flags &= ~CTF_BEOF; 573 sc->sc_flags |= CTF_AEOF; 574 DPRINTF(CDB_FILES, ("ctstart: after %x\n", 575 sc->sc_flags)); 576 } 577 bp->b_resid = bp->b_bcount; 578 ctdone(sc, bp); 579 return; 580 } 581 sc->sc_flags |= CTF_IO; 582 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 583 sc->sc_ioc.saddr = CS80CMD_SADDR; 584 sc->sc_ioc.addr0 = 0; 585 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 586 sc->sc_ioc.nop2 = CS80CMD_NOP; 587 sc->sc_ioc.slen = CS80CMD_SLEN; 588 sc->sc_ioc.len = htobe32(sc->sc_resid); 589 sc->sc_ioc.nop3 = CS80CMD_NOP; 590 if (bp->b_flags & B_READ) 591 sc->sc_ioc.cmd = CS80CMD_READ; 592 else { 593 sc->sc_ioc.cmd = CS80CMD_WRITE; 594 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 595 } 596 (void) cs80send(device_parent(sc->sc_dev), slave, punit, 597 CS80CMD_SCMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 598 } 599 gpibawait(sc->sc_ic); 600 } 601 602 /* 603 * Hideous grue to handle EOF/EOT (mostly for reads) 604 */ 605 void 606 cteof(struct ct_softc *sc, struct buf *bp) 607 { 608 long blks; 609 610 /* 611 * EOT on a write is an error. 612 */ 613 if ((bp->b_flags & B_READ) == 0) { 614 bp->b_resid = bp->b_bcount; 615 bp->b_error = ENOSPC; 616 sc->sc_flags |= CTF_EOT; 617 return; 618 } 619 /* 620 * Use returned block position to determine how many blocks 621 * we really read and update b_resid. 622 */ 623 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 624 DPRINTF(CDB_FILES, 625 ("cteof: bc %d oblk %d nblk %d read %ld, resid %ld\n", 626 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 627 blks, bp->b_bcount - CTKTOB(blks))); 628 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 629 blks = 0; 630 sc->sc_blkno++; 631 } else { 632 sc->sc_blkno = sc->sc_stat.c_blk; 633 } 634 bp->b_resid = bp->b_bcount - CTKTOB(blks); 635 /* 636 * If we are at physical EOV or were after an EOF, 637 * we are now at logical EOT. 638 */ 639 if ((sc->sc_stat.c_aef & AEF_EOV) || 640 (sc->sc_flags & CTF_AEOF)) { 641 sc->sc_flags |= CTF_EOT; 642 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 643 } 644 /* 645 * If we were before an EOF or we have just completed a FSF, 646 * we are now after EOF. 647 */ 648 else if ((sc->sc_flags & CTF_BEOF) || 649 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 650 sc->sc_flags |= CTF_AEOF; 651 sc->sc_flags &= ~CTF_BEOF; 652 } 653 /* 654 * Otherwise if we read something we are now before EOF 655 * (and no longer after EOF). 656 */ 657 else if (blks) { 658 sc->sc_flags |= CTF_BEOF; 659 sc->sc_flags &= ~CTF_AEOF; 660 } 661 /* 662 * Finally, if we didn't read anything we just passed an EOF 663 */ 664 else 665 sc->sc_flags |= CTF_AEOF; 666 DPRINTF(CDB_FILES, ("cteof: leaving flags %x\n", sc->sc_flags)); 667 } 668 669 670 void 671 ctcallback(void *v, int action) 672 { 673 struct ct_softc *sc = v; 674 675 DPRINTF(CDB_FOLLOW, ("ctcallback: v=%p, action=%d\n", v, action)); 676 677 switch (action) { 678 case GPIBCBF_START: 679 ctstart(sc); 680 break; 681 case GPIBCBF_INTR: 682 ctintr(sc); 683 break; 684 #ifdef DEBUG 685 default: 686 DPRINTF(CDB_FAIL, ("ctcallback: unknown action %d\n", action)); 687 break; 688 #endif 689 } 690 } 691 692 void 693 ctintr(struct ct_softc *sc) 694 { 695 struct buf *bp; 696 u_int8_t stat; 697 int slave, punit; 698 int dir; 699 700 slave = sc->sc_slave; 701 punit = sc->sc_punit; 702 703 bp = bufq_peek(sc->sc_tab); 704 if (bp == NULL) { 705 aprint_error_dev(sc->sc_dev, "bp == NULL\n"); 706 return; 707 } 708 if (sc->sc_flags & CTF_IO) { 709 sc->sc_flags &= ~CTF_IO; 710 dir = (bp->b_flags & B_READ ? GPIB_READ : GPIB_WRITE); 711 gpibxfer(sc->sc_ic, slave, CS80CMD_EXEC, sc->sc_addr, 712 sc->sc_resid, dir, dir == GPIB_READ); 713 return; 714 } 715 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 716 if (gpibpptest(sc->sc_ic, slave) == 0) { 717 sc->sc_flags |= CTF_STATWAIT; 718 gpibawait(sc->sc_ic); 719 return; 720 } 721 } else 722 sc->sc_flags &= ~CTF_STATWAIT; 723 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 724 DPRINTF(CDB_FILES, ("ctintr: before flags %x\n", sc->sc_flags)); 725 if (stat) { 726 sc->sc_rsc.unit = CS80CMD_SUNIT(punit); 727 sc->sc_rsc.cmd = CS80CMD_STATUS; 728 (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_rsc, 729 sizeof(sc->sc_rsc)); 730 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, &sc->sc_stat, 731 sizeof(sc->sc_stat)); 732 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 733 DPRINTF(CDB_FILES, 734 ("ctintr: return stat 0x%x, A%x F%x blk %d\n", 735 stat, sc->sc_stat.c_aef, 736 sc->sc_stat.c_fef, sc->sc_stat.c_blk)); 737 if (stat == 0) { 738 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 739 cteof(sc, bp); 740 ctaddeof(sc); 741 goto done; 742 } 743 if (sc->sc_stat.c_fef & FEF_PF) { 744 cs80reset(sc, slave, punit); 745 ctstart(sc); 746 return; 747 } 748 if (sc->sc_stat.c_fef & FEF_REXMT) { 749 ctstart(sc); 750 return; 751 } 752 if (sc->sc_stat.c_aef & 0x5800) { 753 if (sc->sc_stat.c_aef & 0x4000) 754 tprintf(sc->sc_tpr, 755 "%s: uninitialized media\n", 756 device_xname(sc->sc_dev)); 757 if (sc->sc_stat.c_aef & 0x1000) 758 tprintf(sc->sc_tpr, 759 "%s: not ready\n", 760 device_xname(sc->sc_dev)); 761 if (sc->sc_stat.c_aef & 0x0800) 762 tprintf(sc->sc_tpr, 763 "%s: write protect\n", 764 device_xname(sc->sc_dev)); 765 } else { 766 printf("%s err: v%d u%d ru%d bn%d, ", 767 device_xname(sc->sc_dev), 768 (sc->sc_stat.c_vu>>4)&0xF, 769 sc->sc_stat.c_vu&0xF, 770 sc->sc_stat.c_pend, 771 sc->sc_stat.c_blk); 772 printf("R0x%x F0x%x A0x%x I0x%x\n", 773 sc->sc_stat.c_ref, 774 sc->sc_stat.c_fef, 775 sc->sc_stat.c_aef, 776 sc->sc_stat.c_ief); 777 } 778 } else 779 aprint_error_dev(sc->sc_dev, "request status failed\n"); 780 bp->b_error = EIO; 781 goto done; 782 } else 783 bp->b_resid = 0; 784 if (sc->sc_flags & CTF_CMD) { 785 switch (sc->sc_cmd) { 786 case MTFSF: 787 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 788 sc->sc_blkno += CTBTOK(sc->sc_resid); 789 ctstart(sc); 790 return; 791 case MTBSF: 792 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 793 break; 794 case MTBSR: 795 sc->sc_flags &= ~CTF_BEOF; 796 if (sc->sc_flags & CTF_EOT) { 797 sc->sc_flags |= CTF_AEOF; 798 sc->sc_flags &= ~CTF_EOT; 799 } else if (sc->sc_flags & CTF_AEOF) { 800 sc->sc_flags |= CTF_BEOF; 801 sc->sc_flags &= ~CTF_AEOF; 802 } 803 break; 804 case MTWEOF: 805 sc->sc_flags &= ~CTF_BEOF; 806 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 807 sc->sc_flags |= CTF_EOT; 808 sc->sc_flags &= ~CTF_AEOF; 809 } else 810 sc->sc_flags |= CTF_AEOF; 811 break; 812 case MTREW: 813 case MTOFFL: 814 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 815 break; 816 } 817 } else { 818 sc->sc_flags &= ~CTF_AEOF; 819 sc->sc_blkno += CTBTOK(sc->sc_resid); 820 } 821 done: 822 DPRINTF(CDB_FILES, ("ctintr: after flags %x\n", sc->sc_flags)); 823 ctdone(sc, bp); 824 } 825 826 void 827 ctdone(struct ct_softc *sc, struct buf *bp) 828 { 829 830 (void)bufq_get(sc->sc_tab); 831 biodone(bp); 832 gpibrelease(sc->sc_ic, sc->sc_hdl); 833 if (bufq_peek(sc->sc_tab) == NULL) { 834 sc->sc_active = 0; 835 return; 836 } 837 ctustart(sc); 838 } 839 840 int 841 ctread(dev_t dev, struct uio *uio, int flags) 842 { 843 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 844 } 845 846 int 847 ctwrite(dev_t dev, struct uio *uio, int flags) 848 { 849 /* XXX: check for hardware write-protect? */ 850 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 851 } 852 853 /*ARGSUSED*/ 854 int 855 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 856 { 857 struct mtop *op; 858 int cnt; 859 860 switch (cmd) { 861 862 case MTIOCTOP: 863 op = (struct mtop *)data; 864 switch(op->mt_op) { 865 866 case MTWEOF: 867 case MTFSF: 868 case MTBSR: 869 case MTBSF: 870 case MTFSR: 871 cnt = op->mt_count; 872 break; 873 874 case MTREW: 875 case MTOFFL: 876 cnt = 1; 877 break; 878 879 default: 880 return (EINVAL); 881 } 882 ctcommand(dev, op->mt_op, cnt); 883 break; 884 885 case MTIOCGET: 886 break; 887 888 default: 889 return (EINVAL); 890 } 891 return (0); 892 } 893 894 void 895 ctaddeof(struct ct_softc *sc) 896 { 897 898 if (sc->sc_eofp == EOFS - 1) 899 sc->sc_eofs[EOFS - 1]++; 900 else { 901 sc->sc_eofp++; 902 if (sc->sc_eofp == EOFS - 1) 903 sc->sc_eofs[EOFS - 1] = EOFS; 904 else 905 /* save blkno */ 906 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 907 } 908 DPRINTF(CDB_BSF, ("%s: add eof pos %d blk %d\n", 909 device_xname(sc->sc_dev), sc->sc_eofp, 910 sc->sc_eofs[sc->sc_eofp])); 911 } 912
Indexes created Wed Sep 24 15:09:51 GMT 2025