1 /* $NetBSD: ct.c,v 1.51 2007/10/17 19:54:22 garbled Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1982, 1990, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)ct.c 8.2 (Berkeley) 1/12/94 68 */ 69 70 /* 71 * CS80 cartridge tape driver (9144, 88140, 9145) 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 cs80 disk driver 81 * finish support of 9145 82 */ 83 84 #include <sys/cdefs.h> 85 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.51 2007/10/17 19:54:22 garbled 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 <hp300/dev/hpibvar.h> 99 100 #include <hp300/dev/ctreg.h> 101 102 #include "ioconf.h" 103 104 /* number of eof marks to remember */ 105 #define EOFS 128 106 107 struct ct_softc { 108 struct device sc_dev; 109 int sc_slave; /* HP-IB slave ID */ 110 int sc_punit; /* physical unit */ 111 struct ct_iocmd sc_ioc; 112 struct ct_rscmd sc_rsc; 113 struct ct_stat sc_stat; 114 struct ct_ssmcmd sc_ssmc; 115 struct ct_srcmd sc_src; 116 struct ct_soptcmd sc_soptc; 117 struct ct_ulcmd sc_ul; 118 struct ct_wfmcmd sc_wfm; 119 struct ct_clearcmd sc_clear; 120 struct bufq_state *sc_tab; 121 int sc_active; 122 struct buf *sc_bp; 123 struct buf sc_bufstore; /* XXX */ 124 int sc_blkno; 125 int sc_cmd; 126 int sc_resid; 127 char *sc_addr; 128 int sc_flags; 129 short sc_type; 130 tpr_t sc_tpr; 131 struct hpibqueue sc_hq; /* entry on hpib job queue */ 132 int sc_eofp; 133 int sc_eofs[EOFS]; 134 }; 135 136 /* flags */ 137 #define CTF_OPEN 0x01 138 #define CTF_ALIVE 0x02 139 #define CTF_WRT 0x04 140 #define CTF_CMD 0x08 141 #define CTF_IO 0x10 142 #define CTF_BEOF 0x20 143 #define CTF_AEOF 0x40 144 #define CTF_EOT 0x80 145 #define CTF_STATWAIT 0x100 146 #define CTF_CANSTREAM 0x200 147 #define CTF_WRTTN 0x400 148 149 static int ctmatch(struct device *, struct cfdata *, void *); 150 static void ctattach(struct device *, struct device *, void *); 151 152 CFATTACH_DECL(ct, sizeof(struct ct_softc), 153 ctmatch, ctattach, NULL, NULL); 154 155 static dev_type_open(ctopen); 156 static dev_type_close(ctclose); 157 static dev_type_read(ctread); 158 static dev_type_write(ctwrite); 159 static dev_type_ioctl(ctioctl); 160 static dev_type_strategy(ctstrategy); 161 162 const struct bdevsw ct_bdevsw = { 163 ctopen, ctclose, ctstrategy, ctioctl, nodump, nosize, D_TAPE 164 }; 165 166 const struct cdevsw ct_cdevsw = { 167 ctopen, ctclose, ctread, ctwrite, ctioctl, 168 nostop, notty, nopoll, nommap, nokqfilter, D_TAPE 169 }; 170 171 static int ctident(struct device *, struct ct_softc *, 172 struct hpibbus_attach_args *); 173 174 static void ctreset(struct ct_softc *); 175 static void ctaddeof(struct ct_softc *); 176 static void ctustart(struct ct_softc *); 177 static void cteof(struct ct_softc *, struct buf *); 178 static void ctdone(struct ct_softc *, struct buf *); 179 180 static void ctstart(void *); 181 static void ctgo(void *); 182 static void ctintr(void *); 183 184 static void ctcommand(dev_t, int, int); 185 186 static const struct ctinfo { 187 short hwid; 188 short punit; 189 const char *desc; 190 } ctinfo[] = { 191 { CT7946ID, 1, "7946A" }, 192 { CT7912PID, 1, "7912P" }, 193 { CT7914PID, 1, "7914P" }, 194 { CT9144ID, 0, "9144" }, 195 { CT9145ID, 0, "9145" }, 196 { CT35401ID, 0, "35401A"}, 197 }; 198 static const int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]); 199 200 #define CT_NOREW 4 201 #define CT_STREAM 8 202 #define UNIT(x) (minor(x) & 3) 203 #define ctpunit(x) ((x) & 7) 204 205 #ifdef DEBUG 206 int ctdebug = 0; 207 #define CDB_FILES 0x01 208 #define CT_BSF 0x02 209 #endif 210 211 static int 212 ctmatch(struct device *parent, struct cfdata *match, void *aux) 213 { 214 struct hpibbus_attach_args *ha = aux; 215 216 return ctident(parent, NULL, ha); 217 } 218 219 static void 220 ctattach(struct device *parent, struct device *self, void *aux) 221 { 222 struct ct_softc *sc = (struct ct_softc *)self; 223 struct hpibbus_attach_args *ha = aux; 224 225 if (ctident(parent, sc, ha) == 0) { 226 printf("\n%s: didn't respond to describe command!\n", 227 sc->sc_dev.dv_xname); 228 return; 229 } 230 231 sc->sc_slave = ha->ha_slave; 232 sc->sc_punit = ha->ha_punit; 233 234 bufq_alloc(&sc->sc_tab, "fcfs", 0); 235 236 /* Initialize hpib job queue entry. */ 237 sc->sc_hq.hq_softc = sc; 238 sc->sc_hq.hq_slave = sc->sc_slave; 239 sc->sc_hq.hq_start = ctstart; 240 sc->sc_hq.hq_go = ctgo; 241 sc->sc_hq.hq_intr = ctintr; 242 243 ctreset(sc); 244 sc->sc_flags |= CTF_ALIVE; 245 } 246 247 static int 248 ctident(struct device *parent, struct ct_softc *sc, 249 struct hpibbus_attach_args *ha) 250 { 251 struct ct_describe desc; 252 u_char stat, cmd[3]; 253 char name[7]; 254 int i, id, n, type, canstream; 255 256 type = canstream = 0; 257 258 /* Verify that we have a CS80 device. */ 259 if ((ha->ha_id & 0x200) == 0) 260 return 0; 261 262 /* Is it one of the tapes we support? */ 263 for (id = 0; id < nctinfo; id++) 264 if (ha->ha_id == ctinfo[id].hwid) 265 break; 266 if (id == nctinfo) 267 return 0; 268 269 ha->ha_punit = ctinfo[id].punit; 270 271 /* 272 * So far, so good. Get drive parameters. Note command 273 * is always issued to unit 0. 274 */ 275 cmd[0] = C_SUNIT(0); 276 cmd[1] = C_SVOL(0); 277 cmd[2] = C_DESC; 278 hpibsend(device_unit(parent), ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 279 hpibrecv(device_unit(parent), ha->ha_slave, C_EXEC, &desc, 37); 280 hpibrecv(device_unit(parent), ha->ha_slave, C_QSTAT, &stat, 281 sizeof(stat)); 282 283 memset(name, 0, sizeof(name)); 284 if (stat == 0) { 285 n = desc.d_name; 286 for (i = 5; i >= 0; i--) { 287 name[i] = (n & 0xf) + '0'; 288 n >>= 4; 289 } 290 } 291 292 switch (ha->ha_id) { 293 case CT7946ID: 294 if (memcmp(name, "079450", 6) == 0) 295 return 0; /* not really a 7946 */ 296 /* fall into... */ 297 case CT9144ID: 298 case CT9145ID: 299 case CT35401ID: 300 type = CT9144; 301 canstream = 1; 302 break; 303 304 case CT7912PID: 305 case CT7914PID: 306 type = CT88140; 307 break; 308 } 309 310 if (sc != NULL) { 311 sc->sc_type = type; 312 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 313 printf(": %s %stape\n", ctinfo[id].desc, 314 canstream ? "streaming " : ""); 315 } 316 317 return 1; 318 } 319 320 static void 321 ctreset(struct ct_softc *sc) 322 { 323 int ctlr, slave; 324 u_char stat; 325 326 ctlr = device_unit(device_parent(&sc->sc_dev)); 327 slave = sc->sc_slave; 328 329 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 330 sc->sc_clear.cmd = C_CLEAR; 331 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 332 hpibswait(ctlr, slave); 333 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 334 335 sc->sc_src.unit = C_SUNIT(CTCTLR); 336 sc->sc_src.nop = C_NOP; 337 sc->sc_src.cmd = C_SREL; 338 sc->sc_src.param = C_REL; 339 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 340 hpibswait(ctlr, slave); 341 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 342 343 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 344 sc->sc_ssmc.cmd = C_SSM; 345 sc->sc_ssmc.refm = REF_MASK; 346 sc->sc_ssmc.fefm = FEF_MASK; 347 sc->sc_ssmc.aefm = AEF_MASK; 348 sc->sc_ssmc.iefm = IEF_MASK; 349 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 350 hpibswait(ctlr, slave); 351 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 352 353 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 354 sc->sc_soptc.nop = C_NOP; 355 sc->sc_soptc.cmd = C_SOPT; 356 sc->sc_soptc.opt = C_SPAR; 357 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 358 hpibswait(ctlr, slave); 359 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 360 } 361 362 /*ARGSUSED*/ 363 static int 364 ctopen(dev_t dev, int flag, int type, struct lwp *l) 365 { 366 struct ct_softc *sc; 367 u_char stat; 368 int cc, ctlr, slave; 369 370 if (UNIT(dev) >= ct_cd.cd_ndevs || 371 (sc = ct_cd.cd_devs[UNIT(dev)]) == NULL || 372 (sc->sc_flags & CTF_ALIVE) == 0) 373 return ENXIO; 374 375 if (sc->sc_flags & CTF_OPEN) 376 return EBUSY; 377 378 ctlr = device_unit(device_parent(&sc->sc_dev)); 379 slave = sc->sc_slave; 380 381 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 382 sc->sc_soptc.nop = C_NOP; 383 sc->sc_soptc.cmd = C_SOPT; 384 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 385 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 386 else 387 sc->sc_soptc.opt = C_SPAR; 388 389 /* 390 * Check the return of hpibsend() and hpibswait(). 391 * Drive could be loading/unloading a tape. If not checked, 392 * driver hangs. 393 */ 394 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 395 if (cc != sizeof(sc->sc_soptc)) 396 return EBUSY; 397 398 hpibswait(ctlr, slave); 399 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 400 if (cc != sizeof(stat)) 401 return EBUSY; 402 403 sc->sc_tpr = tprintf_open(l->l_proc); 404 sc->sc_flags |= CTF_OPEN; 405 return 0; 406 } 407 408 /*ARGSUSED*/ 409 static int 410 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 411 { 412 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 413 414 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 415 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 416 ctcommand(dev, MTWEOF, 2); 417 ctcommand(dev, MTBSR, 1); 418 if (sc->sc_eofp == EOFS - 1) 419 sc->sc_eofs[EOFS - 1]--; 420 else 421 sc->sc_eofp--; 422 #ifdef DEBUG 423 if(ctdebug & CT_BSF) 424 printf("%s: ctclose backup eofs prt %d blk %d\n", 425 sc->sc_dev.dv_xname, sc->sc_eofp, 426 sc->sc_eofs[sc->sc_eofp]); 427 #endif 428 } 429 if ((minor(dev) & CT_NOREW) == 0) 430 ctcommand(dev, MTREW, 1); 431 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 432 tprintf_close(sc->sc_tpr); 433 #ifdef DEBUG 434 if (ctdebug & CDB_FILES) 435 printf("ctclose: flags %x\n", sc->sc_flags); 436 #endif 437 return 0; /* XXX */ 438 } 439 440 static void 441 ctcommand(dev_t dev, int cmd, int cnt) 442 { 443 struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)]; 444 struct buf *bp = &sc->sc_bufstore; 445 struct buf *nbp = 0; 446 447 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 448 cnt = sc->sc_eofs[EOFS - 1] - cnt; 449 ctcommand(dev, MTREW, 1); 450 ctcommand(dev, MTFSF, cnt); 451 cnt = 2; 452 cmd = MTBSR; 453 } 454 455 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 456 cnt = 1; 457 cmd = MTREW; 458 } 459 460 sc->sc_flags |= CTF_CMD; 461 sc->sc_bp = bp; 462 sc->sc_cmd = cmd; 463 bp->b_dev = dev; 464 if (cmd == MTFSF) { 465 nbp = (struct buf *)geteblk(MAXBSIZE); 466 bp->b_data = nbp->b_data; 467 bp->b_bcount = MAXBSIZE; 468 } 469 470 while (cnt-- > 0) { 471 bp->b_flags = B_BUSY; 472 if (cmd == MTBSF) { 473 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 474 sc->sc_eofp--; 475 #ifdef DEBUG 476 if (ctdebug & CT_BSF) 477 printf("%s: backup eof pos %d blk %d\n", 478 sc->sc_dev.dv_xname, sc->sc_eofp, 479 sc->sc_eofs[sc->sc_eofp]); 480 #endif 481 } 482 ctstrategy(bp); 483 biowait(bp); 484 } 485 bp->b_flags = 0; 486 sc->sc_flags &= ~CTF_CMD; 487 if (nbp) 488 brelse(nbp, 0); 489 } 490 491 static void 492 ctstrategy(struct buf *bp) 493 { 494 int s, unit; 495 struct ct_softc *sc; 496 497 unit = UNIT(bp->b_dev); 498 sc = ct_cd.cd_devs[unit]; 499 500 s = splbio(); 501 BUFQ_PUT(sc->sc_tab, bp); 502 if (sc->sc_active == 0) { 503 sc->sc_active = 1; 504 ctustart(sc); 505 } 506 splx(s); 507 } 508 509 static void 510 ctustart(struct ct_softc *sc) 511 { 512 struct buf *bp; 513 514 bp = BUFQ_PEEK(sc->sc_tab); 515 sc->sc_addr = bp->b_data; 516 sc->sc_resid = bp->b_bcount; 517 if (hpibreq(device_parent(&sc->sc_dev), &sc->sc_hq)) 518 ctstart(sc); 519 } 520 521 static void 522 ctstart(void *arg) 523 { 524 struct ct_softc *sc = arg; 525 struct buf *bp; 526 int i, ctlr, slave; 527 528 ctlr = device_unit(device_parent(&sc->sc_dev)); 529 slave = sc->sc_slave; 530 531 bp = BUFQ_PEEK(sc->sc_tab); 532 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 533 switch(sc->sc_cmd) { 534 case MTFSF: 535 bp->b_flags |= B_READ; 536 goto mustio; 537 538 case MTBSF: 539 goto gotaddr; 540 541 case MTOFFL: 542 sc->sc_blkno = 0; 543 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 544 sc->sc_ul.cmd = C_UNLOAD; 545 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 546 sizeof(sc->sc_ul)); 547 break; 548 549 case MTWEOF: 550 sc->sc_blkno++; 551 sc->sc_flags |= CTF_WRT; 552 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 553 sc->sc_wfm.cmd = C_WFM; 554 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 555 sizeof(sc->sc_wfm)); 556 ctaddeof(sc); 557 break; 558 559 case MTBSR: 560 sc->sc_blkno--; 561 goto gotaddr; 562 563 case MTFSR: 564 sc->sc_blkno++; 565 goto gotaddr; 566 567 case MTREW: 568 sc->sc_blkno = 0; 569 #ifdef DEBUG 570 if(ctdebug & CT_BSF) 571 printf("%s: clearing eofs\n", 572 sc->sc_dev.dv_xname); 573 #endif 574 for (i=0; i<EOFS; i++) 575 sc->sc_eofs[i] = 0; 576 sc->sc_eofp = 0; 577 578 gotaddr: 579 sc->sc_ioc.saddr = C_SADDR; 580 sc->sc_ioc.addr0 = 0; 581 sc->sc_ioc.addr = sc->sc_blkno; 582 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 583 sc->sc_ioc.nop2 = C_NOP; 584 sc->sc_ioc.slen = C_SLEN; 585 sc->sc_ioc.len = 0; 586 sc->sc_ioc.nop3 = C_NOP; 587 sc->sc_ioc.cmd = C_READ; 588 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 589 sizeof(sc->sc_ioc)); 590 break; 591 } 592 } else { 593 mustio: 594 if ((bp->b_flags & B_READ) && 595 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 596 #ifdef DEBUG 597 if (ctdebug & CDB_FILES) 598 printf("ctstart: before flags %x\n", 599 sc->sc_flags); 600 #endif 601 if (sc->sc_flags & CTF_BEOF) { 602 sc->sc_flags &= ~CTF_BEOF; 603 sc->sc_flags |= CTF_AEOF; 604 #ifdef DEBUG 605 if (ctdebug & CDB_FILES) 606 printf("ctstart: after flags %x\n", 607 sc->sc_flags); 608 #endif 609 } 610 bp->b_resid = bp->b_bcount; 611 ctdone(sc, bp); 612 return; 613 } 614 sc->sc_flags |= CTF_IO; 615 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 616 sc->sc_ioc.saddr = C_SADDR; 617 sc->sc_ioc.addr0 = 0; 618 sc->sc_ioc.addr = sc->sc_blkno; 619 sc->sc_ioc.nop2 = C_NOP; 620 sc->sc_ioc.slen = C_SLEN; 621 sc->sc_ioc.len = sc->sc_resid; 622 sc->sc_ioc.nop3 = C_NOP; 623 if (bp->b_flags & B_READ) 624 sc->sc_ioc.cmd = C_READ; 625 else { 626 sc->sc_ioc.cmd = C_WRITE; 627 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 628 } 629 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 630 } 631 hpibawait(ctlr); 632 } 633 634 static void 635 ctgo(void *arg) 636 { 637 struct ct_softc *sc = arg; 638 struct buf *bp; 639 int rw; 640 641 bp = BUFQ_PEEK(sc->sc_tab); 642 rw = bp->b_flags & B_READ; 643 hpibgo(device_unit(device_parent(&sc->sc_dev)), sc->sc_slave, C_EXEC, 644 sc->sc_addr, sc->sc_resid, rw, rw != 0); 645 } 646 647 /* 648 * Hideous grue to handle EOF/EOT (mostly for reads) 649 */ 650 static void 651 cteof(struct ct_softc *sc, struct buf *bp) 652 { 653 long blks; 654 655 /* 656 * EOT on a write is an error. 657 */ 658 if ((bp->b_flags & B_READ) == 0) { 659 bp->b_resid = bp->b_bcount; 660 bp->b_error = ENOSPC; 661 sc->sc_flags |= CTF_EOT; 662 return; 663 } 664 /* 665 * Use returned block position to determine how many blocks 666 * we really read and update b_resid. 667 */ 668 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 669 #ifdef DEBUG 670 if (ctdebug & CDB_FILES) 671 printf("cteof: bc %d oblk %d nblk %ld read %ld, resid %ld\n", 672 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 673 blks, bp->b_bcount - CTKTOB(blks)); 674 #endif 675 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 676 blks = 0; 677 sc->sc_blkno++; 678 } 679 else { 680 sc->sc_blkno = sc->sc_stat.c_blk; 681 } 682 bp->b_resid = bp->b_bcount - CTKTOB(blks); 683 /* 684 * If we are at physical EOV or were after an EOF, 685 * we are now at logical EOT. 686 */ 687 if ((sc->sc_stat.c_aef & AEF_EOV) || 688 (sc->sc_flags & CTF_AEOF)) { 689 sc->sc_flags |= CTF_EOT; 690 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 691 } 692 /* 693 * If we were before an EOF or we have just completed a FSF, 694 * we are now after EOF. 695 */ 696 else if ((sc->sc_flags & CTF_BEOF) || 697 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 698 sc->sc_flags |= CTF_AEOF; 699 sc->sc_flags &= ~CTF_BEOF; 700 } 701 /* 702 * Otherwise if we read something we are now before EOF 703 * (and no longer after EOF). 704 */ 705 else if (blks) { 706 sc->sc_flags |= CTF_BEOF; 707 sc->sc_flags &= ~CTF_AEOF; 708 } 709 /* 710 * Finally, if we didn't read anything we just passed an EOF 711 */ 712 else 713 sc->sc_flags |= CTF_AEOF; 714 #ifdef DEBUG 715 if (ctdebug & CDB_FILES) 716 printf("cteof: leaving flags %x\n", sc->sc_flags); 717 #endif 718 } 719 720 /* ARGSUSED */ 721 static void 722 ctintr(void *arg) 723 { 724 struct ct_softc *sc = arg; 725 struct buf *bp; 726 u_char stat; 727 int ctlr, slave, unit; 728 729 ctlr = device_unit(device_parent(&sc->sc_dev)); 730 slave = sc->sc_slave; 731 unit = device_unit(&sc->sc_dev); 732 733 bp = BUFQ_PEEK(sc->sc_tab); 734 if (bp == NULL) { 735 printf("%s: bp == NULL\n", sc->sc_dev.dv_xname); 736 return; 737 } 738 if (sc->sc_flags & CTF_IO) { 739 sc->sc_flags &= ~CTF_IO; 740 if (hpibustart(ctlr)) 741 ctgo(sc); 742 return; 743 } 744 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 745 if (hpibpptest(ctlr, slave) == 0) { 746 sc->sc_flags |= CTF_STATWAIT; 747 hpibawait(ctlr); 748 return; 749 } 750 } else 751 sc->sc_flags &= ~CTF_STATWAIT; 752 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 753 #ifdef DEBUG 754 if (ctdebug & CDB_FILES) 755 printf("ctintr: before flags %x\n", sc->sc_flags); 756 #endif 757 if (stat) { 758 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 759 sc->sc_rsc.cmd = C_STATUS; 760 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 761 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 762 sizeof(sc->sc_stat)); 763 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 764 #ifdef DEBUG 765 if (ctdebug & CDB_FILES) 766 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 767 stat, sc->sc_stat.c_aef, 768 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 769 #endif 770 if (stat == 0) { 771 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 772 cteof(sc, bp); 773 ctaddeof(sc); 774 goto done; 775 } 776 if (sc->sc_stat.c_fef & FEF_PF) { 777 ctreset(sc); 778 ctstart(sc); 779 return; 780 } 781 if (sc->sc_stat.c_fef & FEF_REXMT) { 782 ctstart(sc); 783 return; 784 } 785 if (sc->sc_stat.c_aef & 0x5800) { 786 if (sc->sc_stat.c_aef & 0x4000) 787 tprintf(sc->sc_tpr, 788 "%s: uninitialized media\n", 789 sc->sc_dev.dv_xname); 790 if (sc->sc_stat.c_aef & 0x1000) 791 tprintf(sc->sc_tpr, 792 "%s: not ready\n", 793 sc->sc_dev.dv_xname); 794 if (sc->sc_stat.c_aef & 0x0800) 795 tprintf(sc->sc_tpr, 796 "%s: write protect\n", 797 sc->sc_dev.dv_xname); 798 } else { 799 printf("%s err: v%d u%d ru%d bn%ld, ", 800 sc->sc_dev.dv_xname, 801 (sc->sc_stat.c_vu>>4)&0xF, 802 sc->sc_stat.c_vu&0xF, 803 sc->sc_stat.c_pend, 804 sc->sc_stat.c_blk); 805 printf("R0x%x F0x%x A0x%x I0x%x\n", 806 sc->sc_stat.c_ref, 807 sc->sc_stat.c_fef, 808 sc->sc_stat.c_aef, 809 sc->sc_stat.c_ief); 810 } 811 } else 812 printf("%s: request status failed\n", 813 sc->sc_dev.dv_xname); 814 bp->b_error = EIO; 815 goto done; 816 } else 817 bp->b_resid = 0; 818 if (sc->sc_flags & CTF_CMD) { 819 switch (sc->sc_cmd) { 820 case MTFSF: 821 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 822 sc->sc_blkno += CTBTOK(sc->sc_resid); 823 ctstart(sc); 824 return; 825 case MTBSF: 826 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 827 break; 828 case MTBSR: 829 sc->sc_flags &= ~CTF_BEOF; 830 if (sc->sc_flags & CTF_EOT) { 831 sc->sc_flags |= CTF_AEOF; 832 sc->sc_flags &= ~CTF_EOT; 833 } else if (sc->sc_flags & CTF_AEOF) { 834 sc->sc_flags |= CTF_BEOF; 835 sc->sc_flags &= ~CTF_AEOF; 836 } 837 break; 838 case MTWEOF: 839 sc->sc_flags &= ~CTF_BEOF; 840 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 841 sc->sc_flags |= CTF_EOT; 842 sc->sc_flags &= ~CTF_AEOF; 843 } else 844 sc->sc_flags |= CTF_AEOF; 845 break; 846 case MTREW: 847 case MTOFFL: 848 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 849 break; 850 } 851 } else { 852 sc->sc_flags &= ~CTF_AEOF; 853 sc->sc_blkno += CTBTOK(sc->sc_resid); 854 } 855 done: 856 #ifdef DEBUG 857 if (ctdebug & CDB_FILES) 858 printf("ctintr: after flags %x\n", sc->sc_flags); 859 #endif 860 ctdone(sc, bp); 861 } 862 863 static void 864 ctdone(struct ct_softc *sc, struct buf *bp) 865 { 866 867 (void)BUFQ_GET(sc->sc_tab); 868 biodone(bp); 869 hpibfree(device_parent(&sc->sc_dev), &sc->sc_hq); 870 if (BUFQ_PEEK(sc->sc_tab) == NULL) { 871 sc->sc_active = 0; 872 return; 873 } 874 ctustart(sc); 875 } 876 877 static int 878 ctread(dev_t dev, struct uio *uio, int flags) 879 { 880 881 return physio(ctstrategy, NULL, dev, B_READ, minphys, uio); 882 } 883 884 static int 885 ctwrite(dev_t dev, struct uio *uio, int flags) 886 { 887 888 /* XXX: check for hardware write-protect? */ 889 return physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio); 890 } 891 892 /*ARGSUSED*/ 893 static int 894 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 895 { 896 struct mtop *op; 897 int cnt; 898 899 switch (cmd) { 900 901 case MTIOCTOP: 902 op = (struct mtop *)data; 903 switch(op->mt_op) { 904 905 case MTWEOF: 906 case MTFSF: 907 case MTBSR: 908 case MTBSF: 909 case MTFSR: 910 cnt = op->mt_count; 911 break; 912 913 case MTREW: 914 case MTOFFL: 915 cnt = 1; 916 break; 917 918 default: 919 return EINVAL; 920 } 921 ctcommand(dev, op->mt_op, cnt); 922 break; 923 924 case MTIOCGET: 925 break; 926 927 default: 928 return EINVAL; 929 } 930 return 0; 931 } 932 933 static void 934 ctaddeof(struct ct_softc *sc) 935 { 936 937 if (sc->sc_eofp == EOFS - 1) 938 sc->sc_eofs[EOFS - 1]++; 939 else { 940 sc->sc_eofp++; 941 if (sc->sc_eofp == EOFS - 1) 942 sc->sc_eofs[EOFS - 1] = EOFS; 943 else 944 /* save blkno */ 945 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 946 } 947 #ifdef DEBUG 948 if (ctdebug & CT_BSF) 949 printf("%s: add eof pos %d blk %d\n", 950 sc->sc_dev.dv_xname, sc->sc_eofp, 951 sc->sc_eofs[sc->sc_eofp]); 952 #endif 953 } 954