ct.c revision 1.58
1 /* $NetBSD: ct.c,v 1.58 2014/03/16 05:20:24 dholland 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 * 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 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)ct.c 8.2 (Berkeley) 1/12/94 61 */ 62 63 /* 64 * CS80 cartridge tape driver (9144, 88140, 9145) 65 * 66 * Reminder: 67 * C_CC bit (character count option) when used in the CS/80 command 68 * 'set options' will cause the tape not to stream. 69 * 70 * TODO: 71 * make filesystem compatible 72 * make block mode work according to mtio(4) spec. (if possible) 73 * merge with cs80 disk driver 74 * finish support of 9145 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: ct.c,v 1.58 2014/03/16 05:20:24 dholland Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/buf.h> 83 #include <sys/bufq.h> 84 #include <sys/conf.h> 85 #include <sys/device.h> 86 #include <sys/ioctl.h> 87 #include <sys/mtio.h> 88 #include <sys/proc.h> 89 #include <sys/tprintf.h> 90 91 #include <hp300/dev/hpibvar.h> 92 93 #include <hp300/dev/ctreg.h> 94 95 #include "ioconf.h" 96 97 /* number of eof marks to remember */ 98 #define EOFS 128 99 100 struct ct_softc { 101 device_t sc_dev; 102 int sc_slave; /* HP-IB slave ID */ 103 int sc_punit; /* physical unit */ 104 struct ct_iocmd sc_ioc; 105 struct ct_rscmd sc_rsc; 106 struct ct_stat sc_stat; 107 struct ct_ssmcmd sc_ssmc; 108 struct ct_srcmd sc_src; 109 struct ct_soptcmd sc_soptc; 110 struct ct_ulcmd sc_ul; 111 struct ct_wfmcmd sc_wfm; 112 struct ct_clearcmd sc_clear; 113 struct bufq_state *sc_tab; 114 int sc_active; 115 struct buf *sc_bp; 116 struct buf sc_bufstore; /* XXX */ 117 int sc_blkno; 118 int sc_cmd; 119 int sc_resid; 120 char *sc_addr; 121 int sc_flags; 122 short sc_type; 123 tpr_t sc_tpr; 124 struct hpibqueue sc_hq; /* entry on hpib job queue */ 125 int sc_eofp; 126 int sc_eofs[EOFS]; 127 }; 128 129 /* flags */ 130 #define CTF_OPEN 0x01 131 #define CTF_ALIVE 0x02 132 #define CTF_WRT 0x04 133 #define CTF_CMD 0x08 134 #define CTF_IO 0x10 135 #define CTF_BEOF 0x20 136 #define CTF_AEOF 0x40 137 #define CTF_EOT 0x80 138 #define CTF_STATWAIT 0x100 139 #define CTF_CANSTREAM 0x200 140 #define CTF_WRTTN 0x400 141 142 static int ctmatch(device_t, cfdata_t, void *); 143 static void ctattach(device_t, device_t, void *); 144 145 CFATTACH_DECL_NEW(ct, sizeof(struct ct_softc), 146 ctmatch, ctattach, NULL, NULL); 147 148 static dev_type_open(ctopen); 149 static dev_type_close(ctclose); 150 static dev_type_read(ctread); 151 static dev_type_write(ctwrite); 152 static dev_type_ioctl(ctioctl); 153 static dev_type_strategy(ctstrategy); 154 155 const struct bdevsw ct_bdevsw = { 156 .d_open = ctopen, 157 .d_close = ctclose, 158 .d_strategy = ctstrategy, 159 .d_ioctl = ctioctl, 160 .d_dump = nodump, 161 .d_psize = nosize, 162 .d_flag = D_TAPE 163 }; 164 165 const struct cdevsw ct_cdevsw = { 166 .d_open = ctopen, 167 .d_close = ctclose, 168 .d_read = ctread, 169 .d_write = ctwrite, 170 .d_ioctl = ctioctl, 171 .d_stop = nostop, 172 .d_tty = notty, 173 .d_poll = nopoll, 174 .d_mmap = nommap, 175 .d_kqfilter = nokqfilter, 176 .d_flag = D_TAPE 177 }; 178 179 static int ctident(device_t, struct ct_softc *, 180 struct hpibbus_attach_args *); 181 182 static void ctreset(struct ct_softc *); 183 static void ctaddeof(struct ct_softc *); 184 static void ctustart(struct ct_softc *); 185 static void cteof(struct ct_softc *, struct buf *); 186 static void ctdone(struct ct_softc *, struct buf *); 187 188 static void ctstart(void *); 189 static void ctgo(void *); 190 static void ctintr(void *); 191 192 static void ctcommand(dev_t, int, int); 193 194 static const struct ctinfo { 195 short hwid; 196 short punit; 197 const char *desc; 198 } ctinfo[] = { 199 { CT7946ID, 1, "7946A" }, 200 { CT7912PID, 1, "7912P" }, 201 { CT7914PID, 1, "7914P" }, 202 { CT9144ID, 0, "9144" }, 203 { CT9145ID, 0, "9145" }, 204 { CT35401ID, 0, "35401A"}, 205 }; 206 static const int nctinfo = __arraycount(ctinfo); 207 208 #define CT_NOREW 4 209 #define CT_STREAM 8 210 #define UNIT(x) (minor(x) & 3) 211 #define ctpunit(x) ((x) & 7) 212 213 #ifdef DEBUG 214 int ctdebug = 0; 215 #define CDB_FILES 0x01 216 #define CT_BSF 0x02 217 #endif 218 219 static int 220 ctmatch(device_t parent, cfdata_t cf, void *aux) 221 { 222 struct hpibbus_attach_args *ha = aux; 223 224 return ctident(parent, NULL, ha); 225 } 226 227 static void 228 ctattach(device_t parent, device_t self, void *aux) 229 { 230 struct ct_softc *sc = device_private(self); 231 struct hpibbus_attach_args *ha = aux; 232 233 sc->sc_dev = self; 234 if (ctident(parent, sc, ha) == 0) { 235 aprint_error(": didn't respond to describe command!\n"); 236 return; 237 } 238 239 sc->sc_slave = ha->ha_slave; 240 sc->sc_punit = ha->ha_punit; 241 242 bufq_alloc(&sc->sc_tab, "fcfs", 0); 243 244 /* Initialize hpib job queue entry. */ 245 sc->sc_hq.hq_softc = sc; 246 sc->sc_hq.hq_slave = sc->sc_slave; 247 sc->sc_hq.hq_start = ctstart; 248 sc->sc_hq.hq_go = ctgo; 249 sc->sc_hq.hq_intr = ctintr; 250 251 ctreset(sc); 252 sc->sc_flags |= CTF_ALIVE; 253 } 254 255 static int 256 ctident(device_t parent, struct ct_softc *sc, struct hpibbus_attach_args *ha) 257 { 258 struct ct_describe desc; 259 u_char stat, cmd[3]; 260 char name[7]; 261 int i, id, n, type, canstream; 262 263 type = canstream = 0; 264 265 /* Verify that we have a CS80 device. */ 266 if ((ha->ha_id & 0x200) == 0) 267 return 0; 268 269 /* Is it one of the tapes we support? */ 270 for (id = 0; id < nctinfo; id++) 271 if (ha->ha_id == ctinfo[id].hwid) 272 break; 273 if (id == nctinfo) 274 return 0; 275 276 ha->ha_punit = ctinfo[id].punit; 277 278 /* 279 * So far, so good. Get drive parameters. Note command 280 * is always issued to unit 0. 281 */ 282 cmd[0] = C_SUNIT(0); 283 cmd[1] = C_SVOL(0); 284 cmd[2] = C_DESC; 285 hpibsend(device_unit(parent), ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 286 hpibrecv(device_unit(parent), ha->ha_slave, C_EXEC, &desc, 37); 287 hpibrecv(device_unit(parent), ha->ha_slave, C_QSTAT, &stat, 288 sizeof(stat)); 289 290 memset(name, 0, sizeof(name)); 291 if (stat == 0) { 292 n = desc.d_name; 293 for (i = 5; i >= 0; i--) { 294 name[i] = (n & 0xf) + '0'; 295 n >>= 4; 296 } 297 } 298 299 switch (ha->ha_id) { 300 case CT7946ID: 301 if (memcmp(name, "079450", 6) == 0) 302 return 0; /* not really a 7946 */ 303 /* fall into... */ 304 case CT9144ID: 305 case CT9145ID: 306 case CT35401ID: 307 type = CT9144; 308 canstream = 1; 309 break; 310 311 case CT7912PID: 312 case CT7914PID: 313 type = CT88140; 314 break; 315 } 316 317 if (sc != NULL) { 318 sc->sc_type = type; 319 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 320 aprint_normal(": %s %stape\n", ctinfo[id].desc, 321 canstream ? "streaming " : ""); 322 } 323 324 return 1; 325 } 326 327 static void 328 ctreset(struct ct_softc *sc) 329 { 330 int ctlr, slave; 331 uint8_t stat; 332 333 ctlr = device_unit(device_parent(sc->sc_dev)); 334 slave = sc->sc_slave; 335 336 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 337 sc->sc_clear.cmd = C_CLEAR; 338 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 339 hpibswait(ctlr, slave); 340 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 341 342 sc->sc_src.unit = C_SUNIT(CTCTLR); 343 sc->sc_src.nop = C_NOP; 344 sc->sc_src.cmd = C_SREL; 345 sc->sc_src.param = C_REL; 346 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 347 hpibswait(ctlr, slave); 348 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 349 350 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 351 sc->sc_ssmc.cmd = C_SSM; 352 sc->sc_ssmc.refm = REF_MASK; 353 sc->sc_ssmc.fefm = FEF_MASK; 354 sc->sc_ssmc.aefm = AEF_MASK; 355 sc->sc_ssmc.iefm = IEF_MASK; 356 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 357 hpibswait(ctlr, slave); 358 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 359 360 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 361 sc->sc_soptc.nop = C_NOP; 362 sc->sc_soptc.cmd = C_SOPT; 363 sc->sc_soptc.opt = C_SPAR; 364 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 365 hpibswait(ctlr, slave); 366 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 367 } 368 369 /*ARGSUSED*/ 370 static int 371 ctopen(dev_t dev, int flag, int type, struct lwp *l) 372 { 373 struct ct_softc *sc; 374 uint8_t stat; 375 int cc, ctlr, slave; 376 377 sc = device_lookup_private(&ct_cd, UNIT(dev)); 378 if (sc == NULL) 379 return ENXIO; 380 381 if ((sc->sc_flags & CTF_ALIVE) == 0) 382 return ENXIO; 383 384 if (sc->sc_flags & CTF_OPEN) 385 return EBUSY; 386 387 ctlr = device_unit(device_parent(sc->sc_dev)); 388 slave = sc->sc_slave; 389 390 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 391 sc->sc_soptc.nop = C_NOP; 392 sc->sc_soptc.cmd = C_SOPT; 393 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 394 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 395 else 396 sc->sc_soptc.opt = C_SPAR; 397 398 /* 399 * Check the return of hpibsend() and hpibswait(). 400 * Drive could be loading/unloading a tape. If not checked, 401 * driver hangs. 402 */ 403 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 404 if (cc != sizeof(sc->sc_soptc)) 405 return EBUSY; 406 407 hpibswait(ctlr, slave); 408 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 409 if (cc != sizeof(stat)) 410 return EBUSY; 411 412 sc->sc_tpr = tprintf_open(l->l_proc); 413 sc->sc_flags |= CTF_OPEN; 414 return 0; 415 } 416 417 /*ARGSUSED*/ 418 static int 419 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 420 { 421 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 422 423 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 424 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 425 ctcommand(dev, MTWEOF, 2); 426 ctcommand(dev, MTBSR, 1); 427 if (sc->sc_eofp == EOFS - 1) 428 sc->sc_eofs[EOFS - 1]--; 429 else 430 sc->sc_eofp--; 431 #ifdef DEBUG 432 if(ctdebug & CT_BSF) 433 printf("%s: ctclose backup eofs prt %d blk %d\n", 434 device_xname(sc->sc_dev), sc->sc_eofp, 435 sc->sc_eofs[sc->sc_eofp]); 436 #endif 437 } 438 if ((minor(dev) & CT_NOREW) == 0) 439 ctcommand(dev, MTREW, 1); 440 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 441 tprintf_close(sc->sc_tpr); 442 #ifdef DEBUG 443 if (ctdebug & CDB_FILES) 444 printf("ctclose: flags %x\n", sc->sc_flags); 445 #endif 446 return 0; /* XXX */ 447 } 448 449 static void 450 ctcommand(dev_t dev, int cmd, int cnt) 451 { 452 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 453 struct buf *bp = &sc->sc_bufstore; 454 struct buf *nbp = 0; 455 456 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 457 cnt = sc->sc_eofs[EOFS - 1] - cnt; 458 ctcommand(dev, MTREW, 1); 459 ctcommand(dev, MTFSF, cnt); 460 cnt = 2; 461 cmd = MTBSR; 462 } 463 464 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 465 cnt = 1; 466 cmd = MTREW; 467 } 468 469 sc->sc_flags |= CTF_CMD; 470 sc->sc_bp = bp; 471 sc->sc_cmd = cmd; 472 bp->b_dev = dev; 473 if (cmd == MTFSF) { 474 nbp = (struct buf *)geteblk(MAXBSIZE); 475 bp->b_data = nbp->b_data; 476 bp->b_bcount = MAXBSIZE; 477 } 478 479 while (cnt-- > 0) { 480 bp->b_cflags = BC_BUSY; 481 if (cmd == MTBSF) { 482 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 483 sc->sc_eofp--; 484 #ifdef DEBUG 485 if (ctdebug & CT_BSF) 486 printf("%s: backup eof pos %d blk %d\n", 487 device_xname(sc->sc_dev), sc->sc_eofp, 488 sc->sc_eofs[sc->sc_eofp]); 489 #endif 490 } 491 ctstrategy(bp); 492 biowait(bp); 493 } 494 bp->b_flags = 0; 495 sc->sc_flags &= ~CTF_CMD; 496 if (nbp) 497 brelse(nbp, 0); 498 } 499 500 static void 501 ctstrategy(struct buf *bp) 502 { 503 int s; 504 struct ct_softc *sc; 505 506 sc = device_lookup_private(&ct_cd, UNIT(bp->b_dev)); 507 508 s = splbio(); 509 bufq_put(sc->sc_tab, bp); 510 if (sc->sc_active == 0) { 511 sc->sc_active = 1; 512 ctustart(sc); 513 } 514 splx(s); 515 } 516 517 static void 518 ctustart(struct ct_softc *sc) 519 { 520 struct buf *bp; 521 522 bp = bufq_peek(sc->sc_tab); 523 sc->sc_addr = bp->b_data; 524 sc->sc_resid = bp->b_bcount; 525 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 526 ctstart(sc); 527 } 528 529 static void 530 ctstart(void *arg) 531 { 532 struct ct_softc *sc = arg; 533 struct buf *bp; 534 int i, ctlr, slave; 535 536 ctlr = device_unit(device_parent(sc->sc_dev)); 537 slave = sc->sc_slave; 538 539 bp = bufq_peek(sc->sc_tab); 540 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 541 switch(sc->sc_cmd) { 542 case MTFSF: 543 bp->b_flags |= B_READ; 544 goto mustio; 545 546 case MTBSF: 547 goto gotaddr; 548 549 case MTOFFL: 550 sc->sc_blkno = 0; 551 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 552 sc->sc_ul.cmd = C_UNLOAD; 553 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 554 sizeof(sc->sc_ul)); 555 break; 556 557 case MTWEOF: 558 sc->sc_blkno++; 559 sc->sc_flags |= CTF_WRT; 560 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 561 sc->sc_wfm.cmd = C_WFM; 562 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 563 sizeof(sc->sc_wfm)); 564 ctaddeof(sc); 565 break; 566 567 case MTBSR: 568 sc->sc_blkno--; 569 goto gotaddr; 570 571 case MTFSR: 572 sc->sc_blkno++; 573 goto gotaddr; 574 575 case MTREW: 576 sc->sc_blkno = 0; 577 #ifdef DEBUG 578 if(ctdebug & CT_BSF) 579 printf("%s: clearing eofs\n", 580 device_xname(sc->sc_dev)); 581 #endif 582 for (i=0; i<EOFS; i++) 583 sc->sc_eofs[i] = 0; 584 sc->sc_eofp = 0; 585 586 gotaddr: 587 sc->sc_ioc.saddr = C_SADDR; 588 sc->sc_ioc.addr0 = 0; 589 sc->sc_ioc.addr = sc->sc_blkno; 590 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 591 sc->sc_ioc.nop2 = C_NOP; 592 sc->sc_ioc.slen = C_SLEN; 593 sc->sc_ioc.len = 0; 594 sc->sc_ioc.nop3 = C_NOP; 595 sc->sc_ioc.cmd = C_READ; 596 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 597 sizeof(sc->sc_ioc)); 598 break; 599 } 600 } else { 601 mustio: 602 if ((bp->b_flags & B_READ) && 603 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 604 #ifdef DEBUG 605 if (ctdebug & CDB_FILES) 606 printf("ctstart: before flags %x\n", 607 sc->sc_flags); 608 #endif 609 if (sc->sc_flags & CTF_BEOF) { 610 sc->sc_flags &= ~CTF_BEOF; 611 sc->sc_flags |= CTF_AEOF; 612 #ifdef DEBUG 613 if (ctdebug & CDB_FILES) 614 printf("ctstart: after flags %x\n", 615 sc->sc_flags); 616 #endif 617 } 618 bp->b_resid = bp->b_bcount; 619 ctdone(sc, bp); 620 return; 621 } 622 sc->sc_flags |= CTF_IO; 623 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 624 sc->sc_ioc.saddr = C_SADDR; 625 sc->sc_ioc.addr0 = 0; 626 sc->sc_ioc.addr = sc->sc_blkno; 627 sc->sc_ioc.nop2 = C_NOP; 628 sc->sc_ioc.slen = C_SLEN; 629 sc->sc_ioc.len = sc->sc_resid; 630 sc->sc_ioc.nop3 = C_NOP; 631 if (bp->b_flags & B_READ) 632 sc->sc_ioc.cmd = C_READ; 633 else { 634 sc->sc_ioc.cmd = C_WRITE; 635 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 636 } 637 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 638 } 639 hpibawait(ctlr); 640 } 641 642 static void 643 ctgo(void *arg) 644 { 645 struct ct_softc *sc = arg; 646 struct buf *bp; 647 int rw; 648 649 bp = bufq_peek(sc->sc_tab); 650 rw = bp->b_flags & B_READ; 651 hpibgo(device_unit(device_parent(sc->sc_dev)), sc->sc_slave, C_EXEC, 652 sc->sc_addr, sc->sc_resid, rw, rw != 0); 653 } 654 655 /* 656 * Hideous grue to handle EOF/EOT (mostly for reads) 657 */ 658 static void 659 cteof(struct ct_softc *sc, struct buf *bp) 660 { 661 long blks; 662 663 /* 664 * EOT on a write is an error. 665 */ 666 if ((bp->b_flags & B_READ) == 0) { 667 bp->b_resid = bp->b_bcount; 668 bp->b_error = ENOSPC; 669 sc->sc_flags |= CTF_EOT; 670 return; 671 } 672 /* 673 * Use returned block position to determine how many blocks 674 * we really read and update b_resid. 675 */ 676 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 677 #ifdef DEBUG 678 if (ctdebug & CDB_FILES) 679 printf("cteof: bc %d oblk %d nblk %ld read %ld, resid %ld\n", 680 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 681 blks, bp->b_bcount - CTKTOB(blks)); 682 #endif 683 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 684 blks = 0; 685 sc->sc_blkno++; 686 } 687 else { 688 sc->sc_blkno = sc->sc_stat.c_blk; 689 } 690 bp->b_resid = bp->b_bcount - CTKTOB(blks); 691 /* 692 * If we are at physical EOV or were after an EOF, 693 * we are now at logical EOT. 694 */ 695 if ((sc->sc_stat.c_aef & AEF_EOV) || 696 (sc->sc_flags & CTF_AEOF)) { 697 sc->sc_flags |= CTF_EOT; 698 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 699 } 700 /* 701 * If we were before an EOF or we have just completed a FSF, 702 * we are now after EOF. 703 */ 704 else if ((sc->sc_flags & CTF_BEOF) || 705 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 706 sc->sc_flags |= CTF_AEOF; 707 sc->sc_flags &= ~CTF_BEOF; 708 } 709 /* 710 * Otherwise if we read something we are now before EOF 711 * (and no longer after EOF). 712 */ 713 else if (blks) { 714 sc->sc_flags |= CTF_BEOF; 715 sc->sc_flags &= ~CTF_AEOF; 716 } 717 /* 718 * Finally, if we didn't read anything we just passed an EOF 719 */ 720 else 721 sc->sc_flags |= CTF_AEOF; 722 #ifdef DEBUG 723 if (ctdebug & CDB_FILES) 724 printf("cteof: leaving flags %x\n", sc->sc_flags); 725 #endif 726 } 727 728 /* ARGSUSED */ 729 static void 730 ctintr(void *arg) 731 { 732 struct ct_softc *sc = arg; 733 struct buf *bp; 734 uint8_t stat; 735 int ctlr, slave, unit; 736 737 ctlr = device_unit(device_parent(sc->sc_dev)); 738 slave = sc->sc_slave; 739 unit = device_unit(sc->sc_dev); 740 741 bp = bufq_peek(sc->sc_tab); 742 if (bp == NULL) { 743 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 744 return; 745 } 746 if (sc->sc_flags & CTF_IO) { 747 sc->sc_flags &= ~CTF_IO; 748 if (hpibustart(ctlr)) 749 ctgo(sc); 750 return; 751 } 752 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 753 if (hpibpptest(ctlr, slave) == 0) { 754 sc->sc_flags |= CTF_STATWAIT; 755 hpibawait(ctlr); 756 return; 757 } 758 } else 759 sc->sc_flags &= ~CTF_STATWAIT; 760 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 761 #ifdef DEBUG 762 if (ctdebug & CDB_FILES) 763 printf("ctintr: before flags %x\n", sc->sc_flags); 764 #endif 765 if (stat) { 766 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 767 sc->sc_rsc.cmd = C_STATUS; 768 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 769 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 770 sizeof(sc->sc_stat)); 771 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 772 #ifdef DEBUG 773 if (ctdebug & CDB_FILES) 774 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 775 stat, sc->sc_stat.c_aef, 776 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 777 #endif 778 if (stat == 0) { 779 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 780 cteof(sc, bp); 781 ctaddeof(sc); 782 goto done; 783 } 784 if (sc->sc_stat.c_fef & FEF_PF) { 785 ctreset(sc); 786 ctstart(sc); 787 return; 788 } 789 if (sc->sc_stat.c_fef & FEF_REXMT) { 790 ctstart(sc); 791 return; 792 } 793 if (sc->sc_stat.c_aef & 0x5800) { 794 if (sc->sc_stat.c_aef & 0x4000) 795 tprintf(sc->sc_tpr, 796 "%s: uninitialized media\n", 797 device_xname(sc->sc_dev)); 798 if (sc->sc_stat.c_aef & 0x1000) 799 tprintf(sc->sc_tpr, 800 "%s: not ready\n", 801 device_xname(sc->sc_dev)); 802 if (sc->sc_stat.c_aef & 0x0800) 803 tprintf(sc->sc_tpr, 804 "%s: write protect\n", 805 device_xname(sc->sc_dev)); 806 } else { 807 printf("%s err: v%d u%d ru%d bn%ld, ", 808 device_xname(sc->sc_dev), 809 (sc->sc_stat.c_vu >> 4) & 0xF, 810 sc->sc_stat.c_vu & 0xF, 811 sc->sc_stat.c_pend, 812 sc->sc_stat.c_blk); 813 printf("R0x%x F0x%x A0x%x I0x%x\n", 814 sc->sc_stat.c_ref, 815 sc->sc_stat.c_fef, 816 sc->sc_stat.c_aef, 817 sc->sc_stat.c_ief); 818 } 819 } else 820 printf("%s: request status failed\n", 821 device_xname(sc->sc_dev)); 822 bp->b_error = EIO; 823 goto done; 824 } else 825 bp->b_resid = 0; 826 if (sc->sc_flags & CTF_CMD) { 827 switch (sc->sc_cmd) { 828 case MTFSF: 829 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 830 sc->sc_blkno += CTBTOK(sc->sc_resid); 831 ctstart(sc); 832 return; 833 case MTBSF: 834 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 835 break; 836 case MTBSR: 837 sc->sc_flags &= ~CTF_BEOF; 838 if (sc->sc_flags & CTF_EOT) { 839 sc->sc_flags |= CTF_AEOF; 840 sc->sc_flags &= ~CTF_EOT; 841 } else if (sc->sc_flags & CTF_AEOF) { 842 sc->sc_flags |= CTF_BEOF; 843 sc->sc_flags &= ~CTF_AEOF; 844 } 845 break; 846 case MTWEOF: 847 sc->sc_flags &= ~CTF_BEOF; 848 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 849 sc->sc_flags |= CTF_EOT; 850 sc->sc_flags &= ~CTF_AEOF; 851 } else 852 sc->sc_flags |= CTF_AEOF; 853 break; 854 case MTREW: 855 case MTOFFL: 856 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 857 break; 858 } 859 } else { 860 sc->sc_flags &= ~CTF_AEOF; 861 sc->sc_blkno += CTBTOK(sc->sc_resid); 862 } 863 done: 864 #ifdef DEBUG 865 if (ctdebug & CDB_FILES) 866 printf("ctintr: after flags %x\n", sc->sc_flags); 867 #endif 868 ctdone(sc, bp); 869 } 870 871 static void 872 ctdone(struct ct_softc *sc, struct buf *bp) 873 { 874 875 (void)bufq_get(sc->sc_tab); 876 biodone(bp); 877 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 878 if (bufq_peek(sc->sc_tab) == NULL) { 879 sc->sc_active = 0; 880 return; 881 } 882 ctustart(sc); 883 } 884 885 static int 886 ctread(dev_t dev, struct uio *uio, int flags) 887 { 888 889 return physio(ctstrategy, NULL, dev, B_READ, minphys, uio); 890 } 891 892 static int 893 ctwrite(dev_t dev, struct uio *uio, int flags) 894 { 895 896 /* XXX: check for hardware write-protect? */ 897 return physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio); 898 } 899 900 /*ARGSUSED*/ 901 static int 902 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 903 { 904 struct mtop *op; 905 int cnt; 906 907 switch (cmd) { 908 909 case MTIOCTOP: 910 op = (struct mtop *)data; 911 switch(op->mt_op) { 912 913 case MTWEOF: 914 case MTFSF: 915 case MTBSR: 916 case MTBSF: 917 case MTFSR: 918 cnt = op->mt_count; 919 break; 920 921 case MTREW: 922 case MTOFFL: 923 cnt = 1; 924 break; 925 926 default: 927 return EINVAL; 928 } 929 ctcommand(dev, op->mt_op, cnt); 930 break; 931 932 case MTIOCGET: 933 break; 934 935 default: 936 return EINVAL; 937 } 938 return 0; 939 } 940 941 static void 942 ctaddeof(struct ct_softc *sc) 943 { 944 945 if (sc->sc_eofp == EOFS - 1) 946 sc->sc_eofs[EOFS - 1]++; 947 else { 948 sc->sc_eofp++; 949 if (sc->sc_eofp == EOFS - 1) 950 sc->sc_eofs[EOFS - 1] = EOFS; 951 else 952 /* save blkno */ 953 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 954 } 955 #ifdef DEBUG 956 if (ctdebug & CT_BSF) 957 printf("%s: add eof pos %d blk %d\n", 958 device_xname(sc->sc_dev), sc->sc_eofp, 959 sc->sc_eofs[sc->sc_eofp]); 960 #endif 961 } 962
Indexes created Fri Sep 26 20:09:58 GMT 2025