ct.c revision 1.21
1 /* $NetBSD: ct.c,v 1.21 2009/05/12 14:21:58 cegger 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) 1982, 1990, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * the Systems Programming Group of the University of Utah Computer 38 * Science Department. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 65 * 66 * @(#)rd.c 8.2 (Berkeley) 5/19/94 67 */ 68 69 /* 70 * Copyright (c) 1988 University of Utah. 71 * 72 * This code is derived from software contributed to Berkeley by 73 * the Systems Programming Group of the University of Utah Computer 74 * Science Department. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. All advertising materials mentioning features or use of this software 85 * must display the following acknowledgement: 86 * This product includes software developed by the University of 87 * California, Berkeley and its contributors. 88 * 4. Neither the name of the University nor the names of its contributors 89 * may be used to endorse or promote products derived from this software 90 * without specific prior written permission. 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 93 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 95 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 96 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 97 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 98 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 100 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 101 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 102 * SUCH DAMAGE. 103 * 104 * from: Utah $Hdr: rd.c 1.44 92/12/26$ 105 * 106 * @(#)rd.c 8.2 (Berkeley) 5/19/94 107 */ 108 109 /* 110 * CS/80 cartridge tape driver (HP9144, HP88140, HP9145) 111 * 112 * Reminder: 113 * C_CC bit (character count option) when used in the CS/80 command 114 * 'set options' will cause the tape not to stream. 115 * 116 * TODO: 117 * make filesystem compatible 118 * make block mode work according to mtio(4) spec. (if possible) 119 * merge with CS/80 disk driver 120 * finish support of HP9145 121 */ 122 123 #include <sys/cdefs.h> 124 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.21 2009/05/12 14:21:58 cegger Exp $"); 125 126 #include <sys/param.h> 127 #include <sys/systm.h> 128 #include <sys/buf.h> 129 #include <sys/bufq.h> 130 #include <sys/conf.h> 131 #include <sys/device.h> 132 #include <sys/ioctl.h> 133 #include <sys/mtio.h> 134 #include <sys/proc.h> 135 #include <sys/tprintf.h> 136 137 #include <dev/gpib/ctreg.h> /* XXX must be before cs80busvar.h ATM */ 138 139 #include <dev/gpib/gpibvar.h> 140 #include <dev/gpib/cs80busvar.h> 141 142 /* number of eof marks to remember */ 143 #define EOFS 128 144 145 #ifdef DEBUG 146 int ctdebug = 0xff; 147 #define CDB_FILES 0x01 148 #define CDB_BSF 0x02 149 #define CDB_IDENT 0x04 150 #define CDB_FAIL 0x08 151 #define CDB_FOLLOW 0x10 152 #define DPRINTF(mask, str) if (ctdebug & (mask)) printf str 153 #else 154 #define DPRINTF(mask, str) /* nothing */ 155 #endif 156 157 struct ct_softc { 158 struct device sc_dev; 159 160 gpib_chipset_tag_t sc_ic; 161 gpib_handle_t sc_hdl; 162 163 int sc_slave; /* GPIB slave ID */ 164 int sc_punit; /* physical unit */ 165 struct ct_iocmd sc_ioc; 166 struct ct_rscmd sc_rsc; 167 struct cs80_stat sc_stat; 168 struct bufq_state *sc_tab; 169 int sc_active; 170 struct buf *sc_bp; 171 struct buf sc_bufstore; /* XXX */ 172 int sc_blkno; 173 int sc_cmd; 174 int sc_resid; 175 char *sc_addr; 176 int sc_flags; 177 #define CTF_OPEN 0x01 178 #define CTF_ALIVE 0x02 179 #define CTF_WRT 0x04 180 #define CTF_CMD 0x08 181 #define CTF_IO 0x10 182 #define CTF_BEOF 0x20 183 #define CTF_AEOF 0x40 184 #define CTF_EOT 0x80 185 #define CTF_STATWAIT 0x100 186 #define CTF_CANSTREAM 0x200 187 #define CTF_WRTTN 0x400 188 short sc_type; 189 tpr_t sc_tpr; 190 int sc_eofp; 191 int sc_eofs[EOFS]; 192 }; 193 194 int ctmatch(device_t, cfdata_t, void *); 195 void ctattach(device_t, device_t, void *); 196 197 CFATTACH_DECL(ct, sizeof(struct ct_softc), 198 ctmatch, ctattach, NULL, NULL); 199 200 int ctident(device_t, struct ct_softc *, 201 struct cs80bus_attach_args *); 202 203 int ctlookup(int, int, int); 204 void ctaddeof(struct ct_softc *); 205 void ctustart(struct ct_softc *); 206 void cteof(struct ct_softc *, struct buf *); 207 void ctdone(struct ct_softc *, struct buf *); 208 209 void ctcallback(void *, int); 210 void ctstart(struct ct_softc *); 211 void ctintr(struct ct_softc *); 212 213 void ctcommand(dev_t, int, int); 214 215 dev_type_open(ctopen); 216 dev_type_close(ctclose); 217 dev_type_read(ctread); 218 dev_type_write(ctwrite); 219 dev_type_ioctl(ctioctl); 220 dev_type_strategy(ctstrategy); 221 222 const struct bdevsw ct_bdevsw = { 223 ctopen, ctclose, ctstrategy, ctioctl, nodump, nosize, D_TAPE 224 }; 225 226 const struct cdevsw ct_cdevsw = { 227 ctopen, ctclose, ctread, ctwrite, ctioctl, 228 nostop, notty, nopoll, nommap, nokqfilter, D_TAPE 229 }; 230 231 extern struct cfdriver ct_cd; 232 233 struct ctinfo { 234 short hwid; 235 short punit; 236 const char *desc; 237 } ctinfo[] = { 238 { CT7946ID, 1, "7946A" }, 239 { CT7912PID, 1, "7912P" }, 240 { CT7914PID, 1, "7914P" }, 241 { CT9144ID, 0, "9144" }, 242 { CT9145ID, 0, "9145" }, 243 { CT35401ID, 0, "35401A"}, 244 }; 245 int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 246 247 #define CT_NOREW 4 248 #define CT_STREAM 8 249 #define CTUNIT(x) (minor(x) & 0x03) 250 251 int 252 ctlookup(int id, int slave, int punit) 253 { 254 int i; 255 256 for (i = 0; i < nctinfo; i++) 257 if (ctinfo[i].hwid == id) 258 break; 259 if (i == nctinfo) 260 return (-1); 261 return (i); 262 } 263 264 int 265 ctmatch(device_t parent, cfdata_t match, void *aux) 266 { 267 struct cs80bus_attach_args *ca = aux; 268 int i; 269 270 if ((i = ctlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) 271 return (0); 272 ca->ca_punit = ctinfo[i].punit; 273 return (1); 274 } 275 276 void 277 ctattach(device_t parent, device_t self, void *aux) 278 { 279 struct ct_softc *sc = device_private(self); 280 struct cs80bus_attach_args *ca = aux; 281 struct cs80_description csd; 282 char name[7]; 283 int type, i, n, canstream = 0; 284 285 sc->sc_ic = ca->ca_ic; 286 sc->sc_slave = ca->ca_slave; 287 sc->sc_punit = ca->ca_punit; 288 289 if ((type = ctlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) 290 return; 291 292 if (cs80reset(parent, sc->sc_slave, sc->sc_punit)) { 293 aprint_normal("\n"); 294 aprint_error_dev(&sc->sc_dev, "can't reset device\n"); 295 return; 296 } 297 298 if (cs80describe(parent, sc->sc_slave, sc->sc_punit, &csd)) { 299 aprint_normal("\n"); 300 aprint_error_dev(&sc->sc_dev, "didn't respond to describe command\n"); 301 return; 302 } 303 memset(name, 0, sizeof(name)); 304 for (i=0, n=0; i<3; i++) { 305 name[n++] = (csd.d_name[i] >> 4) + '0'; 306 name[n++] = (csd.d_name[i] & 0x0f) + '0'; 307 } 308 309 #ifdef DEBUG 310 if (ctdebug & CDB_IDENT) { 311 printf("\n%s: name: ('%s')\n", 312 device_xname(&sc->sc_dev),name); 313 printf(" iuw %x, maxxfr %d, ctype %d\n", 314 csd.d_iuw, csd.d_cmaxxfr, csd.d_ctype); 315 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 316 csd.d_utype, csd.d_sectsize, 317 csd.d_blkbuf, csd.d_burstsize, csd.d_blocktime); 318 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 319 csd.d_uavexfr, csd.d_retry, csd.d_access, 320 csd.d_maxint, csd.d_fvbyte, csd.d_rvbyte); 321 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 322 csd.d_maxcylhead >> 8 , csd.d_maxcylhead & 0xff, 323 csd.d_maxsect, csd.d_maxvsectl, csd.d_interleave); 324 printf("%s", device_xname(&sc->sc_dev)); 325 } 326 #endif 327 328 switch (ca->ca_id) { 329 case CT7946ID: 330 if (memcmp(name, "079450", 6) == 0) 331 return; /* not really a 7946 */ 332 /* fall into... */ 333 case CT9144ID: 334 case CT9145ID: 335 case CT35401ID: 336 sc->sc_type = CT9144; 337 canstream = 1; 338 break; 339 340 case CT7912PID: 341 case CT7914PID: 342 sc->sc_type = CT88140; 343 break; 344 default: 345 sc->sc_type = type; 346 break; 347 } 348 349 sc->sc_type = type; 350 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 351 printf(": %s %stape\n", ctinfo[type].desc, 352 canstream ? "streaming " : ""); 353 354 bufq_alloc(&sc->sc_tab, "fcfs", 0); 355 356 if (gpibregister(sc->sc_ic, sc->sc_slave, ctcallback, sc, 357 &sc->sc_hdl)) { 358 aprint_error_dev(&sc->sc_dev, "can't register callback\n"); 359 return; 360 } 361 362 sc->sc_flags |= CTF_ALIVE; 363 } 364 365 /*ARGSUSED*/ 366 int 367 ctopen(dev_t dev, int flag, int type, struct lwp *l) 368 { 369 struct ct_softc *sc; 370 u_int8_t opt; 371 372 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 373 if (sc == NULL || (sc->sc_flags & CTF_ALIVE) == 0) 374 return (ENXIO); 375 376 if (sc->sc_flags & CTF_OPEN) 377 return (EBUSY); 378 379 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 380 opt = C_SPAR | C_IMRPT; 381 else 382 opt = C_SPAR; 383 384 if (cs80setoptions(device_parent(&sc->sc_dev), sc->sc_slave, 385 sc->sc_punit, opt)) 386 return (EBUSY); 387 388 sc->sc_tpr = tprintf_open(l->l_proc); 389 sc->sc_flags |= CTF_OPEN; 390 391 return (0); 392 } 393 394 /*ARGSUSED*/ 395 int 396 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 397 { 398 struct ct_softc *sc; 399 400 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 401 if (sc == NULL) 402 return (ENXIO); 403 404 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 405 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 406 ctcommand(dev, MTWEOF, 2); 407 ctcommand(dev, MTBSR, 1); 408 if (sc->sc_eofp == EOFS - 1) 409 sc->sc_eofs[EOFS - 1]--; 410 else 411 sc->sc_eofp--; 412 DPRINTF(CDB_BSF, ("%s: ctclose backup eofs prt %d blk %d\n", 413 device_xname(&sc->sc_dev), sc->sc_eofp, 414 sc->sc_eofs[sc->sc_eofp])); 415 } 416 417 if ((minor(dev) & CT_NOREW) == 0) 418 ctcommand(dev, MTREW, 1); 419 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 420 tprintf_close(sc->sc_tpr); 421 DPRINTF(CDB_FILES, ("ctclose: flags %x\n", sc->sc_flags)); 422 423 return (0); /* XXX */ 424 } 425 426 void 427 ctcommand(dev_t dev, int cmd, int cnt) 428 { 429 struct ct_softc *sc; 430 struct buf *bp; 431 struct buf *nbp = 0; 432 433 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 434 bp = &sc->sc_bufstore; 435 436 DPRINTF(CDB_FOLLOW, ("ctcommand: called\n")); 437 438 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 439 cnt = sc->sc_eofs[EOFS - 1] - cnt; 440 ctcommand(dev, MTREW, 1); 441 ctcommand(dev, MTFSF, cnt); 442 cnt = 2; 443 cmd = MTBSR; 444 } 445 446 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 447 cnt = 1; 448 cmd = MTREW; 449 } 450 451 sc->sc_flags |= CTF_CMD; 452 sc->sc_bp = bp; 453 sc->sc_cmd = cmd; 454 bp->b_dev = dev; 455 bp->b_objlock = &buffer_lock; 456 if (cmd == MTFSF) { 457 nbp = (struct buf *)geteblk(MAXBSIZE); 458 bp->b_data = nbp->b_data; 459 bp->b_bcount = MAXBSIZE; 460 } 461 462 while (cnt-- > 0) { 463 bp->b_flags = 0; 464 bp->b_cflags = BC_BUSY; 465 bp->b_oflags = 0; 466 if (cmd == MTBSF) { 467 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 468 sc->sc_eofp--; 469 DPRINTF(CDB_BSF, ("%s: backup eof pos %d blk %d\n", 470 device_xname(&sc->sc_dev), sc->sc_eofp, 471 sc->sc_eofs[sc->sc_eofp])); 472 } 473 ctstrategy(bp); 474 biowait(bp); 475 } 476 bp->b_flags = 0; 477 sc->sc_flags &= ~CTF_CMD; 478 if (nbp) 479 brelse(nbp, 0); 480 } 481 482 void 483 ctstrategy(struct buf *bp) 484 { 485 struct ct_softc *sc; 486 int s; 487 488 DPRINTF(CDB_FOLLOW, ("cdstrategy(%p): dev %x, bn %x, bcount %lx, %c\n", 489 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 490 (bp->b_flags & B_READ) ? 'R' : 'W')); 491 492 sc = device_lookup_private(&ct_cd, CTUNIT(bp->b_dev)); 493 494 s = splbio(); 495 bufq_put(sc->sc_tab, bp); 496 if (sc->sc_active == 0) { 497 sc->sc_active = 1; 498 ctustart(sc); 499 } 500 splx(s); 501 } 502 503 void 504 ctustart(struct ct_softc *sc) 505 { 506 struct buf *bp; 507 508 bp = bufq_peek(sc->sc_tab); 509 sc->sc_addr = bp->b_data; 510 sc->sc_resid = bp->b_bcount; 511 if (gpibrequest(sc->sc_ic, sc->sc_hdl)) 512 ctstart(sc); 513 } 514 515 void 516 ctstart(struct ct_softc *sc) 517 { 518 struct buf *bp; 519 struct ct_ulcmd ul; 520 struct ct_wfmcmd wfm; 521 int i, slave, punit; 522 523 slave = sc->sc_slave; 524 punit = sc->sc_punit; 525 526 bp = bufq_peek(sc->sc_tab); 527 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 528 switch(sc->sc_cmd) { 529 case MTFSF: 530 bp->b_flags |= B_READ; 531 goto mustio; 532 533 case MTBSF: 534 goto gotaddr; 535 536 case MTOFFL: 537 sc->sc_blkno = 0; 538 ul.unit = CS80CMD_SUNIT(punit); 539 ul.cmd = CS80CMD_UNLOAD; 540 (void) cs80send(device_parent(&sc->sc_dev), slave, 541 punit, CS80CMD_SCMD, &ul, sizeof(ul)); 542 break; 543 544 case MTWEOF: 545 sc->sc_blkno++; 546 sc->sc_flags |= CTF_WRT; 547 wfm.unit = CS80CMD_SUNIT(sc->sc_punit); 548 wfm.cmd = CS80CMD_WFM; 549 (void) cs80send(device_parent(&sc->sc_dev), slave, 550 punit, CS80CMD_SCMD, &wfm, sizeof(wfm)); 551 ctaddeof(sc); 552 break; 553 554 case MTBSR: 555 sc->sc_blkno--; 556 goto gotaddr; 557 558 case MTFSR: 559 sc->sc_blkno++; 560 goto gotaddr; 561 562 case MTREW: 563 sc->sc_blkno = 0; 564 DPRINTF(CDB_BSF, ("%s: clearing eofs\n", 565 device_xname(&sc->sc_dev))); 566 for (i=0; i<EOFS; i++) 567 sc->sc_eofs[i] = 0; 568 sc->sc_eofp = 0; 569 570 gotaddr: 571 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 572 sc->sc_ioc.saddr = CS80CMD_SADDR; 573 sc->sc_ioc.addr0 = 0; 574 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 575 sc->sc_ioc.nop2 = CS80CMD_NOP; 576 sc->sc_ioc.slen = CS80CMD_SLEN; 577 sc->sc_ioc.len = htobe32(0); 578 sc->sc_ioc.nop3 = CS80CMD_NOP; 579 sc->sc_ioc.cmd = CS80CMD_READ; 580 (void) cs80send(device_parent(&sc->sc_dev), slave, 581 punit, CS80CMD_SCMD, &sc->sc_ioc, 582 sizeof(sc->sc_ioc)); 583 break; 584 } 585 } else { 586 mustio: 587 if ((bp->b_flags & B_READ) && 588 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 589 DPRINTF(CDB_FILES, ("ctstart: before %x\n", 590 sc->sc_flags)); 591 if (sc->sc_flags & CTF_BEOF) { 592 sc->sc_flags &= ~CTF_BEOF; 593 sc->sc_flags |= CTF_AEOF; 594 DPRINTF(CDB_FILES, ("ctstart: after %x\n", 595 sc->sc_flags)); 596 } 597 bp->b_resid = bp->b_bcount; 598 ctdone(sc, bp); 599 return; 600 } 601 sc->sc_flags |= CTF_IO; 602 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 603 sc->sc_ioc.saddr = CS80CMD_SADDR; 604 sc->sc_ioc.addr0 = 0; 605 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 606 sc->sc_ioc.nop2 = CS80CMD_NOP; 607 sc->sc_ioc.slen = CS80CMD_SLEN; 608 sc->sc_ioc.len = htobe32(sc->sc_resid); 609 sc->sc_ioc.nop3 = CS80CMD_NOP; 610 if (bp->b_flags & B_READ) 611 sc->sc_ioc.cmd = CS80CMD_READ; 612 else { 613 sc->sc_ioc.cmd = CS80CMD_WRITE; 614 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 615 } 616 (void) cs80send(device_parent(&sc->sc_dev), slave, punit, 617 CS80CMD_SCMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 618 } 619 gpibawait(sc->sc_ic); 620 } 621 622 /* 623 * Hideous grue to handle EOF/EOT (mostly for reads) 624 */ 625 void 626 cteof(struct ct_softc *sc, struct buf *bp) 627 { 628 long blks; 629 630 /* 631 * EOT on a write is an error. 632 */ 633 if ((bp->b_flags & B_READ) == 0) { 634 bp->b_resid = bp->b_bcount; 635 bp->b_error = ENOSPC; 636 sc->sc_flags |= CTF_EOT; 637 return; 638 } 639 /* 640 * Use returned block position to determine how many blocks 641 * we really read and update b_resid. 642 */ 643 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 644 DPRINTF(CDB_FILES, ("cteof: bc %ld oblk %d nblk %d read %ld, resid %ld\n", 645 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 646 blks, bp->b_bcount - CTKTOB(blks))); 647 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 648 blks = 0; 649 sc->sc_blkno++; 650 } 651 else { 652 sc->sc_blkno = sc->sc_stat.c_blk; 653 } 654 bp->b_resid = bp->b_bcount - CTKTOB(blks); 655 /* 656 * If we are at physical EOV or were after an EOF, 657 * we are now at logical EOT. 658 */ 659 if ((sc->sc_stat.c_aef & AEF_EOV) || 660 (sc->sc_flags & CTF_AEOF)) { 661 sc->sc_flags |= CTF_EOT; 662 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 663 } 664 /* 665 * If we were before an EOF or we have just completed a FSF, 666 * we are now after EOF. 667 */ 668 else if ((sc->sc_flags & CTF_BEOF) || 669 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 670 sc->sc_flags |= CTF_AEOF; 671 sc->sc_flags &= ~CTF_BEOF; 672 } 673 /* 674 * Otherwise if we read something we are now before EOF 675 * (and no longer after EOF). 676 */ 677 else if (blks) { 678 sc->sc_flags |= CTF_BEOF; 679 sc->sc_flags &= ~CTF_AEOF; 680 } 681 /* 682 * Finally, if we didn't read anything we just passed an EOF 683 */ 684 else 685 sc->sc_flags |= CTF_AEOF; 686 DPRINTF(CDB_FILES, ("cteof: leaving flags %x\n", sc->sc_flags)); 687 } 688 689 690 void 691 ctcallback(void *v, int action) 692 { 693 struct ct_softc *sc = v; 694 695 DPRINTF(CDB_FOLLOW, ("ctcallback: v=%p, action=%d\n", v, action)); 696 697 switch (action) { 698 case GPIBCBF_START: 699 ctstart(sc); 700 break; 701 case GPIBCBF_INTR: 702 ctintr(sc); 703 break; 704 #ifdef DEBUG 705 default: 706 DPRINTF(CDB_FAIL, ("ctcallback: unknown action %d\n", action)); 707 break; 708 #endif 709 } 710 } 711 712 void 713 ctintr(struct ct_softc *sc) 714 { 715 struct buf *bp; 716 u_int8_t stat; 717 int slave, punit; 718 int dir; 719 720 slave = sc->sc_slave; 721 punit = sc->sc_punit; 722 723 bp = bufq_peek(sc->sc_tab); 724 if (bp == NULL) { 725 aprint_error_dev(&sc->sc_dev, "bp == NULL\n"); 726 return; 727 } 728 if (sc->sc_flags & CTF_IO) { 729 sc->sc_flags &= ~CTF_IO; 730 dir = (bp->b_flags & B_READ ? GPIB_READ : GPIB_WRITE); 731 gpibxfer(sc->sc_ic, slave, CS80CMD_EXEC, sc->sc_addr, 732 sc->sc_resid, dir, dir == GPIB_READ); 733 return; 734 } 735 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 736 if (gpibpptest(sc->sc_ic, slave) == 0) { 737 sc->sc_flags |= CTF_STATWAIT; 738 gpibawait(sc->sc_ic); 739 return; 740 } 741 } else 742 sc->sc_flags &= ~CTF_STATWAIT; 743 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 744 DPRINTF(CDB_FILES, ("ctintr: before flags %x\n", sc->sc_flags)); 745 if (stat) { 746 sc->sc_rsc.unit = CS80CMD_SUNIT(punit); 747 sc->sc_rsc.cmd = CS80CMD_STATUS; 748 (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_rsc, 749 sizeof(sc->sc_rsc)); 750 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, &sc->sc_stat, 751 sizeof(sc->sc_stat)); 752 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 753 DPRINTF(CDB_FILES, ("ctintr: return stat 0x%x, A%x F%x blk %d\n", 754 stat, sc->sc_stat.c_aef, 755 sc->sc_stat.c_fef, sc->sc_stat.c_blk)); 756 if (stat == 0) { 757 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 758 cteof(sc, bp); 759 ctaddeof(sc); 760 goto done; 761 } 762 if (sc->sc_stat.c_fef & FEF_PF) { 763 cs80reset(sc, slave, punit); 764 ctstart(sc); 765 return; 766 } 767 if (sc->sc_stat.c_fef & FEF_REXMT) { 768 ctstart(sc); 769 return; 770 } 771 if (sc->sc_stat.c_aef & 0x5800) { 772 if (sc->sc_stat.c_aef & 0x4000) 773 tprintf(sc->sc_tpr, 774 "%s: uninitialized media\n", 775 device_xname(&sc->sc_dev)); 776 if (sc->sc_stat.c_aef & 0x1000) 777 tprintf(sc->sc_tpr, 778 "%s: not ready\n", 779 device_xname(&sc->sc_dev)); 780 if (sc->sc_stat.c_aef & 0x0800) 781 tprintf(sc->sc_tpr, 782 "%s: write protect\n", 783 device_xname(&sc->sc_dev)); 784 } else { 785 printf("%s err: v%d u%d ru%d bn%d, ", 786 device_xname(&sc->sc_dev), 787 (sc->sc_stat.c_vu>>4)&0xF, 788 sc->sc_stat.c_vu&0xF, 789 sc->sc_stat.c_pend, 790 sc->sc_stat.c_blk); 791 printf("R0x%x F0x%x A0x%x I0x%x\n", 792 sc->sc_stat.c_ref, 793 sc->sc_stat.c_fef, 794 sc->sc_stat.c_aef, 795 sc->sc_stat.c_ief); 796 } 797 } else 798 aprint_error_dev(&sc->sc_dev, "request status failed\n"); 799 bp->b_error = EIO; 800 goto done; 801 } else 802 bp->b_resid = 0; 803 if (sc->sc_flags & CTF_CMD) { 804 switch (sc->sc_cmd) { 805 case MTFSF: 806 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 807 sc->sc_blkno += CTBTOK(sc->sc_resid); 808 ctstart(sc); 809 return; 810 case MTBSF: 811 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 812 break; 813 case MTBSR: 814 sc->sc_flags &= ~CTF_BEOF; 815 if (sc->sc_flags & CTF_EOT) { 816 sc->sc_flags |= CTF_AEOF; 817 sc->sc_flags &= ~CTF_EOT; 818 } else if (sc->sc_flags & CTF_AEOF) { 819 sc->sc_flags |= CTF_BEOF; 820 sc->sc_flags &= ~CTF_AEOF; 821 } 822 break; 823 case MTWEOF: 824 sc->sc_flags &= ~CTF_BEOF; 825 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 826 sc->sc_flags |= CTF_EOT; 827 sc->sc_flags &= ~CTF_AEOF; 828 } else 829 sc->sc_flags |= CTF_AEOF; 830 break; 831 case MTREW: 832 case MTOFFL: 833 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 834 break; 835 } 836 } else { 837 sc->sc_flags &= ~CTF_AEOF; 838 sc->sc_blkno += CTBTOK(sc->sc_resid); 839 } 840 done: 841 DPRINTF(CDB_FILES, ("ctintr: after flags %x\n", sc->sc_flags)); 842 ctdone(sc, bp); 843 } 844 845 void 846 ctdone(struct ct_softc *sc, struct buf *bp) 847 { 848 849 (void)bufq_get(sc->sc_tab); 850 biodone(bp); 851 gpibrelease(sc->sc_ic, sc->sc_hdl); 852 if (bufq_peek(sc->sc_tab) == NULL) { 853 sc->sc_active = 0; 854 return; 855 } 856 ctustart(sc); 857 } 858 859 int 860 ctread(dev_t dev, struct uio *uio, int flags) 861 { 862 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 863 } 864 865 int 866 ctwrite(dev_t dev, struct uio *uio, int flags) 867 { 868 /* XXX: check for hardware write-protect? */ 869 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 870 } 871 872 /*ARGSUSED*/ 873 int 874 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 875 { 876 struct mtop *op; 877 int cnt; 878 879 switch (cmd) { 880 881 case MTIOCTOP: 882 op = (struct mtop *)data; 883 switch(op->mt_op) { 884 885 case MTWEOF: 886 case MTFSF: 887 case MTBSR: 888 case MTBSF: 889 case MTFSR: 890 cnt = op->mt_count; 891 break; 892 893 case MTREW: 894 case MTOFFL: 895 cnt = 1; 896 break; 897 898 default: 899 return (EINVAL); 900 } 901 ctcommand(dev, op->mt_op, cnt); 902 break; 903 904 case MTIOCGET: 905 break; 906 907 default: 908 return (EINVAL); 909 } 910 return (0); 911 } 912 913 void 914 ctaddeof(struct ct_softc *sc) 915 { 916 917 if (sc->sc_eofp == EOFS - 1) 918 sc->sc_eofs[EOFS - 1]++; 919 else { 920 sc->sc_eofp++; 921 if (sc->sc_eofp == EOFS - 1) 922 sc->sc_eofs[EOFS - 1] = EOFS; 923 else 924 /* save blkno */ 925 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 926 } 927 DPRINTF(CDB_BSF, ("%s: add eof pos %d blk %d\n", 928 device_xname(&sc->sc_dev), sc->sc_eofp, 929 sc->sc_eofs[sc->sc_eofp])); 930 } 931
Indexes created Fri Sep 26 08:10:20 GMT 2025