ct.c revision 1.18
1 /* $NetBSD: ct.c,v 1.18 2009/03/14 15:36:17 dsl 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 1.18 2009/03/14 15:36:17 dsl 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(struct device *, struct cfdata *, void *); 195 void ctattach(struct device *, struct device *, void *); 196 197 CFATTACH_DECL(ct, sizeof(struct ct_softc), 198 ctmatch, ctattach, NULL, NULL); 199 200 int ctident(struct device *, 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(struct device *parent, struct cfdata *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(parent, self, aux) 278 struct device *parent, *self; 279 void *aux; 280 { 281 struct ct_softc *sc = device_private(self); 282 struct cs80bus_attach_args *ca = aux; 283 struct cs80_description csd; 284 char name[7]; 285 int type, i, n, canstream = 0; 286 287 sc->sc_ic = ca->ca_ic; 288 sc->sc_slave = ca->ca_slave; 289 sc->sc_punit = ca->ca_punit; 290 291 if ((type = ctlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) 292 return; 293 294 if (cs80reset(parent, sc->sc_slave, sc->sc_punit)) { 295 aprint_normal("\n"); 296 aprint_error_dev(&sc->sc_dev, "can't reset device\n"); 297 return; 298 } 299 300 if (cs80describe(parent, sc->sc_slave, sc->sc_punit, &csd)) { 301 aprint_normal("\n"); 302 aprint_error_dev(&sc->sc_dev, "didn't respond to describe command\n"); 303 return; 304 } 305 memset(name, 0, sizeof(name)); 306 for (i=0, n=0; i<3; i++) { 307 name[n++] = (csd.d_name[i] >> 4) + '0'; 308 name[n++] = (csd.d_name[i] & 0x0f) + '0'; 309 } 310 311 #ifdef DEBUG 312 if (ctdebug & CDB_IDENT) { 313 printf("\n%s: name: ('%s')\n", 314 device_xname(&sc->sc_dev),name); 315 printf(" iuw %x, maxxfr %d, ctype %d\n", 316 csd.d_iuw, csd.d_cmaxxfr, csd.d_ctype); 317 printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", 318 csd.d_utype, csd.d_sectsize, 319 csd.d_blkbuf, csd.d_burstsize, csd.d_blocktime); 320 printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", 321 csd.d_uavexfr, csd.d_retry, csd.d_access, 322 csd.d_maxint, csd.d_fvbyte, csd.d_rvbyte); 323 printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", 324 csd.d_maxcylhead >> 8 , csd.d_maxcylhead & 0xff, 325 csd.d_maxsect, csd.d_maxvsectl, csd.d_interleave); 326 printf("%s", device_xname(&sc->sc_dev)); 327 } 328 #endif 329 330 switch (ca->ca_id) { 331 case CT7946ID: 332 if (memcmp(name, "079450", 6) == 0) 333 return; /* not really a 7946 */ 334 /* fall into... */ 335 case CT9144ID: 336 case CT9145ID: 337 case CT35401ID: 338 sc->sc_type = CT9144; 339 canstream = 1; 340 break; 341 342 case CT7912PID: 343 case CT7914PID: 344 sc->sc_type = CT88140; 345 break; 346 default: 347 sc->sc_type = type; 348 break; 349 } 350 351 sc->sc_type = type; 352 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 353 printf(": %s %stape\n", ctinfo[type].desc, 354 canstream ? "streaming " : ""); 355 356 bufq_alloc(&sc->sc_tab, "fcfs", 0); 357 358 if (gpibregister(sc->sc_ic, sc->sc_slave, ctcallback, sc, 359 &sc->sc_hdl)) { 360 aprint_error_dev(&sc->sc_dev, "can't register callback\n"); 361 return; 362 } 363 364 sc->sc_flags |= CTF_ALIVE; 365 } 366 367 /*ARGSUSED*/ 368 int 369 ctopen(dev_t dev, int flag, int type, struct lwp *l) 370 { 371 struct ct_softc *sc; 372 u_int8_t opt; 373 374 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 375 if (sc == NULL || (sc->sc_flags & CTF_ALIVE) == 0) 376 return (ENXIO); 377 378 if (sc->sc_flags & CTF_OPEN) 379 return (EBUSY); 380 381 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 382 opt = C_SPAR | C_IMRPT; 383 else 384 opt = C_SPAR; 385 386 if (cs80setoptions(device_parent(&sc->sc_dev), sc->sc_slave, 387 sc->sc_punit, opt)) 388 return (EBUSY); 389 390 sc->sc_tpr = tprintf_open(l->l_proc); 391 sc->sc_flags |= CTF_OPEN; 392 393 return (0); 394 } 395 396 /*ARGSUSED*/ 397 int 398 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 399 { 400 struct ct_softc *sc; 401 402 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 403 if (sc == NULL) 404 return (ENXIO); 405 406 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 407 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 408 ctcommand(dev, MTWEOF, 2); 409 ctcommand(dev, MTBSR, 1); 410 if (sc->sc_eofp == EOFS - 1) 411 sc->sc_eofs[EOFS - 1]--; 412 else 413 sc->sc_eofp--; 414 DPRINTF(CDB_BSF, ("%s: ctclose backup eofs prt %d blk %d\n", 415 device_xname(&sc->sc_dev), sc->sc_eofp, 416 sc->sc_eofs[sc->sc_eofp])); 417 } 418 419 if ((minor(dev) & CT_NOREW) == 0) 420 ctcommand(dev, MTREW, 1); 421 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 422 tprintf_close(sc->sc_tpr); 423 DPRINTF(CDB_FILES, ("ctclose: flags %x\n", sc->sc_flags)); 424 425 return (0); /* XXX */ 426 } 427 428 void 429 ctcommand(dev_t dev, int cmd, int cnt) 430 { 431 struct ct_softc *sc; 432 struct buf *bp; 433 struct buf *nbp = 0; 434 435 sc = device_lookup_private(&ct_cd, CTUNIT(dev)); 436 bp = &sc->sc_bufstore; 437 438 DPRINTF(CDB_FOLLOW, ("ctcommand: called\n")); 439 440 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 441 cnt = sc->sc_eofs[EOFS - 1] - cnt; 442 ctcommand(dev, MTREW, 1); 443 ctcommand(dev, MTFSF, cnt); 444 cnt = 2; 445 cmd = MTBSR; 446 } 447 448 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 449 cnt = 1; 450 cmd = MTREW; 451 } 452 453 sc->sc_flags |= CTF_CMD; 454 sc->sc_bp = bp; 455 sc->sc_cmd = cmd; 456 bp->b_dev = dev; 457 bp->b_objlock = &buffer_lock; 458 if (cmd == MTFSF) { 459 nbp = (struct buf *)geteblk(MAXBSIZE); 460 bp->b_data = nbp->b_data; 461 bp->b_bcount = MAXBSIZE; 462 } 463 464 while (cnt-- > 0) { 465 bp->b_flags = 0; 466 bp->b_cflags = BC_BUSY; 467 bp->b_oflags = 0; 468 if (cmd == MTBSF) { 469 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 470 sc->sc_eofp--; 471 DPRINTF(CDB_BSF, ("%s: backup eof pos %d blk %d\n", 472 device_xname(&sc->sc_dev), sc->sc_eofp, 473 sc->sc_eofs[sc->sc_eofp])); 474 } 475 ctstrategy(bp); 476 biowait(bp); 477 } 478 bp->b_flags = 0; 479 sc->sc_flags &= ~CTF_CMD; 480 if (nbp) 481 brelse(nbp, 0); 482 } 483 484 void 485 ctstrategy(struct buf *bp) 486 { 487 struct ct_softc *sc; 488 int s; 489 490 DPRINTF(CDB_FOLLOW, ("cdstrategy(%p): dev %x, bn %x, bcount %lx, %c\n", 491 bp, bp->b_dev, bp->b_blkno, bp->b_bcount, 492 (bp->b_flags & B_READ) ? 'R' : 'W')); 493 494 sc = device_lookup_private(&ct_cd, CTUNIT(bp->b_dev)); 495 496 s = splbio(); 497 bufq_put(sc->sc_tab, bp); 498 if (sc->sc_active == 0) { 499 sc->sc_active = 1; 500 ctustart(sc); 501 } 502 splx(s); 503 } 504 505 void 506 ctustart(struct ct_softc *sc) 507 { 508 struct buf *bp; 509 510 bp = bufq_peek(sc->sc_tab); 511 sc->sc_addr = bp->b_data; 512 sc->sc_resid = bp->b_bcount; 513 if (gpibrequest(sc->sc_ic, sc->sc_hdl)) 514 ctstart(sc); 515 } 516 517 void 518 ctstart(struct ct_softc *sc) 519 { 520 struct buf *bp; 521 struct ct_ulcmd ul; 522 struct ct_wfmcmd wfm; 523 int i, slave, punit; 524 525 slave = sc->sc_slave; 526 punit = sc->sc_punit; 527 528 bp = bufq_peek(sc->sc_tab); 529 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 530 switch(sc->sc_cmd) { 531 case MTFSF: 532 bp->b_flags |= B_READ; 533 goto mustio; 534 535 case MTBSF: 536 goto gotaddr; 537 538 case MTOFFL: 539 sc->sc_blkno = 0; 540 ul.unit = CS80CMD_SUNIT(punit); 541 ul.cmd = CS80CMD_UNLOAD; 542 (void) cs80send(device_parent(&sc->sc_dev), slave, 543 punit, CS80CMD_SCMD, &ul, sizeof(ul)); 544 break; 545 546 case MTWEOF: 547 sc->sc_blkno++; 548 sc->sc_flags |= CTF_WRT; 549 wfm.unit = CS80CMD_SUNIT(sc->sc_punit); 550 wfm.cmd = CS80CMD_WFM; 551 (void) cs80send(device_parent(&sc->sc_dev), slave, 552 punit, CS80CMD_SCMD, &wfm, sizeof(wfm)); 553 ctaddeof(sc); 554 break; 555 556 case MTBSR: 557 sc->sc_blkno--; 558 goto gotaddr; 559 560 case MTFSR: 561 sc->sc_blkno++; 562 goto gotaddr; 563 564 case MTREW: 565 sc->sc_blkno = 0; 566 DPRINTF(CDB_BSF, ("%s: clearing eofs\n", 567 device_xname(&sc->sc_dev))); 568 for (i=0; i<EOFS; i++) 569 sc->sc_eofs[i] = 0; 570 sc->sc_eofp = 0; 571 572 gotaddr: 573 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 574 sc->sc_ioc.saddr = CS80CMD_SADDR; 575 sc->sc_ioc.addr0 = 0; 576 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 577 sc->sc_ioc.nop2 = CS80CMD_NOP; 578 sc->sc_ioc.slen = CS80CMD_SLEN; 579 sc->sc_ioc.len = htobe32(0); 580 sc->sc_ioc.nop3 = CS80CMD_NOP; 581 sc->sc_ioc.cmd = CS80CMD_READ; 582 (void) cs80send(device_parent(&sc->sc_dev), slave, 583 punit, CS80CMD_SCMD, &sc->sc_ioc, 584 sizeof(sc->sc_ioc)); 585 break; 586 } 587 } else { 588 mustio: 589 if ((bp->b_flags & B_READ) && 590 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 591 DPRINTF(CDB_FILES, ("ctstart: before %x\n", 592 sc->sc_flags)); 593 if (sc->sc_flags & CTF_BEOF) { 594 sc->sc_flags &= ~CTF_BEOF; 595 sc->sc_flags |= CTF_AEOF; 596 DPRINTF(CDB_FILES, ("ctstart: after %x\n", 597 sc->sc_flags)); 598 } 599 bp->b_resid = bp->b_bcount; 600 ctdone(sc, bp); 601 return; 602 } 603 sc->sc_flags |= CTF_IO; 604 sc->sc_ioc.unit = CS80CMD_SUNIT(sc->sc_punit); 605 sc->sc_ioc.saddr = CS80CMD_SADDR; 606 sc->sc_ioc.addr0 = 0; 607 sc->sc_ioc.addr = htobe32(sc->sc_blkno); 608 sc->sc_ioc.nop2 = CS80CMD_NOP; 609 sc->sc_ioc.slen = CS80CMD_SLEN; 610 sc->sc_ioc.len = htobe32(sc->sc_resid); 611 sc->sc_ioc.nop3 = CS80CMD_NOP; 612 if (bp->b_flags & B_READ) 613 sc->sc_ioc.cmd = CS80CMD_READ; 614 else { 615 sc->sc_ioc.cmd = CS80CMD_WRITE; 616 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 617 } 618 (void) cs80send(device_parent(&sc->sc_dev), slave, punit, 619 CS80CMD_SCMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 620 } 621 gpibawait(sc->sc_ic); 622 } 623 624 /* 625 * Hideous grue to handle EOF/EOT (mostly for reads) 626 */ 627 void 628 cteof(struct ct_softc *sc, struct buf *bp) 629 { 630 long blks; 631 632 /* 633 * EOT on a write is an error. 634 */ 635 if ((bp->b_flags & B_READ) == 0) { 636 bp->b_resid = bp->b_bcount; 637 bp->b_error = ENOSPC; 638 sc->sc_flags |= CTF_EOT; 639 return; 640 } 641 /* 642 * Use returned block position to determine how many blocks 643 * we really read and update b_resid. 644 */ 645 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 646 DPRINTF(CDB_FILES, ("cteof: bc %ld oblk %d nblk %d read %ld, resid %ld\n", 647 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 648 blks, bp->b_bcount - CTKTOB(blks))); 649 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 650 blks = 0; 651 sc->sc_blkno++; 652 } 653 else { 654 sc->sc_blkno = sc->sc_stat.c_blk; 655 } 656 bp->b_resid = bp->b_bcount - CTKTOB(blks); 657 /* 658 * If we are at physical EOV or were after an EOF, 659 * we are now at logical EOT. 660 */ 661 if ((sc->sc_stat.c_aef & AEF_EOV) || 662 (sc->sc_flags & CTF_AEOF)) { 663 sc->sc_flags |= CTF_EOT; 664 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 665 } 666 /* 667 * If we were before an EOF or we have just completed a FSF, 668 * we are now after EOF. 669 */ 670 else if ((sc->sc_flags & CTF_BEOF) || 671 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 672 sc->sc_flags |= CTF_AEOF; 673 sc->sc_flags &= ~CTF_BEOF; 674 } 675 /* 676 * Otherwise if we read something we are now before EOF 677 * (and no longer after EOF). 678 */ 679 else if (blks) { 680 sc->sc_flags |= CTF_BEOF; 681 sc->sc_flags &= ~CTF_AEOF; 682 } 683 /* 684 * Finally, if we didn't read anything we just passed an EOF 685 */ 686 else 687 sc->sc_flags |= CTF_AEOF; 688 DPRINTF(CDB_FILES, ("cteof: leaving flags %x\n", sc->sc_flags)); 689 } 690 691 692 void 693 ctcallback(void *v, int action) 694 { 695 struct ct_softc *sc = v; 696 697 DPRINTF(CDB_FOLLOW, ("ctcallback: v=%p, action=%d\n", v, action)); 698 699 switch (action) { 700 case GPIBCBF_START: 701 ctstart(sc); 702 break; 703 case GPIBCBF_INTR: 704 ctintr(sc); 705 break; 706 #ifdef DEBUG 707 default: 708 DPRINTF(CDB_FAIL, ("ctcallback: unknown action %d\n", action)); 709 break; 710 #endif 711 } 712 } 713 714 void 715 ctintr(struct ct_softc *sc) 716 { 717 struct buf *bp; 718 u_int8_t stat; 719 int slave, punit; 720 int dir; 721 722 slave = sc->sc_slave; 723 punit = sc->sc_punit; 724 725 bp = bufq_peek(sc->sc_tab); 726 if (bp == NULL) { 727 aprint_error_dev(&sc->sc_dev, "bp == NULL\n"); 728 return; 729 } 730 if (sc->sc_flags & CTF_IO) { 731 sc->sc_flags &= ~CTF_IO; 732 dir = (bp->b_flags & B_READ ? GPIB_READ : GPIB_WRITE); 733 gpibxfer(sc->sc_ic, slave, CS80CMD_EXEC, sc->sc_addr, 734 sc->sc_resid, dir, dir == GPIB_READ); 735 return; 736 } 737 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 738 if (gpibpptest(sc->sc_ic, slave) == 0) { 739 sc->sc_flags |= CTF_STATWAIT; 740 gpibawait(sc->sc_ic); 741 return; 742 } 743 } else 744 sc->sc_flags &= ~CTF_STATWAIT; 745 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 746 DPRINTF(CDB_FILES, ("ctintr: before flags %x\n", sc->sc_flags)); 747 if (stat) { 748 sc->sc_rsc.unit = CS80CMD_SUNIT(punit); 749 sc->sc_rsc.cmd = CS80CMD_STATUS; 750 (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_rsc, 751 sizeof(sc->sc_rsc)); 752 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_EXEC, &sc->sc_stat, 753 sizeof(sc->sc_stat)); 754 (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); 755 DPRINTF(CDB_FILES, ("ctintr: return stat 0x%x, A%x F%x blk %d\n", 756 stat, sc->sc_stat.c_aef, 757 sc->sc_stat.c_fef, sc->sc_stat.c_blk)); 758 if (stat == 0) { 759 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 760 cteof(sc, bp); 761 ctaddeof(sc); 762 goto done; 763 } 764 if (sc->sc_stat.c_fef & FEF_PF) { 765 cs80reset(sc, slave, punit); 766 ctstart(sc); 767 return; 768 } 769 if (sc->sc_stat.c_fef & FEF_REXMT) { 770 ctstart(sc); 771 return; 772 } 773 if (sc->sc_stat.c_aef & 0x5800) { 774 if (sc->sc_stat.c_aef & 0x4000) 775 tprintf(sc->sc_tpr, 776 "%s: uninitialized media\n", 777 device_xname(&sc->sc_dev)); 778 if (sc->sc_stat.c_aef & 0x1000) 779 tprintf(sc->sc_tpr, 780 "%s: not ready\n", 781 device_xname(&sc->sc_dev)); 782 if (sc->sc_stat.c_aef & 0x0800) 783 tprintf(sc->sc_tpr, 784 "%s: write protect\n", 785 device_xname(&sc->sc_dev)); 786 } else { 787 printf("%s err: v%d u%d ru%d bn%d, ", 788 device_xname(&sc->sc_dev), 789 (sc->sc_stat.c_vu>>4)&0xF, 790 sc->sc_stat.c_vu&0xF, 791 sc->sc_stat.c_pend, 792 sc->sc_stat.c_blk); 793 printf("R0x%x F0x%x A0x%x I0x%x\n", 794 sc->sc_stat.c_ref, 795 sc->sc_stat.c_fef, 796 sc->sc_stat.c_aef, 797 sc->sc_stat.c_ief); 798 } 799 } else 800 aprint_error_dev(&sc->sc_dev, "request status failed\n"); 801 bp->b_error = EIO; 802 goto done; 803 } else 804 bp->b_resid = 0; 805 if (sc->sc_flags & CTF_CMD) { 806 switch (sc->sc_cmd) { 807 case MTFSF: 808 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 809 sc->sc_blkno += CTBTOK(sc->sc_resid); 810 ctstart(sc); 811 return; 812 case MTBSF: 813 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 814 break; 815 case MTBSR: 816 sc->sc_flags &= ~CTF_BEOF; 817 if (sc->sc_flags & CTF_EOT) { 818 sc->sc_flags |= CTF_AEOF; 819 sc->sc_flags &= ~CTF_EOT; 820 } else if (sc->sc_flags & CTF_AEOF) { 821 sc->sc_flags |= CTF_BEOF; 822 sc->sc_flags &= ~CTF_AEOF; 823 } 824 break; 825 case MTWEOF: 826 sc->sc_flags &= ~CTF_BEOF; 827 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 828 sc->sc_flags |= CTF_EOT; 829 sc->sc_flags &= ~CTF_AEOF; 830 } else 831 sc->sc_flags |= CTF_AEOF; 832 break; 833 case MTREW: 834 case MTOFFL: 835 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 836 break; 837 } 838 } else { 839 sc->sc_flags &= ~CTF_AEOF; 840 sc->sc_blkno += CTBTOK(sc->sc_resid); 841 } 842 done: 843 DPRINTF(CDB_FILES, ("ctintr: after flags %x\n", sc->sc_flags)); 844 ctdone(sc, bp); 845 } 846 847 void 848 ctdone(struct ct_softc *sc, struct buf *bp) 849 { 850 851 (void)bufq_get(sc->sc_tab); 852 biodone(bp); 853 gpibrelease(sc->sc_ic, sc->sc_hdl); 854 if (bufq_peek(sc->sc_tab) == NULL) { 855 sc->sc_active = 0; 856 return; 857 } 858 ctustart(sc); 859 } 860 861 int 862 ctread(dev_t dev, struct uio *uio, int flags) 863 { 864 return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio)); 865 } 866 867 int 868 ctwrite(dev_t dev, struct uio *uio, int flags) 869 { 870 /* XXX: check for hardware write-protect? */ 871 return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio)); 872 } 873 874 /*ARGSUSED*/ 875 int 876 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 877 { 878 struct mtop *op; 879 int cnt; 880 881 switch (cmd) { 882 883 case MTIOCTOP: 884 op = (struct mtop *)data; 885 switch(op->mt_op) { 886 887 case MTWEOF: 888 case MTFSF: 889 case MTBSR: 890 case MTBSF: 891 case MTFSR: 892 cnt = op->mt_count; 893 break; 894 895 case MTREW: 896 case MTOFFL: 897 cnt = 1; 898 break; 899 900 default: 901 return (EINVAL); 902 } 903 ctcommand(dev, op->mt_op, cnt); 904 break; 905 906 case MTIOCGET: 907 break; 908 909 default: 910 return (EINVAL); 911 } 912 return (0); 913 } 914 915 void 916 ctaddeof(struct ct_softc *sc) 917 { 918 919 if (sc->sc_eofp == EOFS - 1) 920 sc->sc_eofs[EOFS - 1]++; 921 else { 922 sc->sc_eofp++; 923 if (sc->sc_eofp == EOFS - 1) 924 sc->sc_eofs[EOFS - 1] = EOFS; 925 else 926 /* save blkno */ 927 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 928 } 929 DPRINTF(CDB_BSF, ("%s: add eof pos %d blk %d\n", 930 device_xname(&sc->sc_dev), sc->sc_eofp, 931 sc->sc_eofs[sc->sc_eofp])); 932 } 933
Indexes created Thu Sep 25 06:09:39 GMT 2025