ct.c revision 1.63
1 /* $NetBSD: ct.c,v 1.63 2021/07/05 14:51:23 tsutsui 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 1.63 2021/07/05 14:51:23 tsutsui 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_discard = nodiscard, 163 .d_flag = D_TAPE 164 }; 165 166 const struct cdevsw ct_cdevsw = { 167 .d_open = ctopen, 168 .d_close = ctclose, 169 .d_read = ctread, 170 .d_write = ctwrite, 171 .d_ioctl = ctioctl, 172 .d_stop = nostop, 173 .d_tty = notty, 174 .d_poll = nopoll, 175 .d_mmap = nommap, 176 .d_kqfilter = nokqfilter, 177 .d_discard = nodiscard, 178 .d_flag = D_TAPE 179 }; 180 181 static int ctident(device_t, struct ct_softc *, 182 struct hpibbus_attach_args *); 183 184 static void ctreset(struct ct_softc *); 185 static void ctaddeof(struct ct_softc *); 186 static void ctustart(struct ct_softc *); 187 static void cteof(struct ct_softc *, struct buf *); 188 static void ctdone(struct ct_softc *, struct buf *); 189 190 static void ctstart(void *); 191 static void ctgo(void *); 192 static void ctintr(void *); 193 194 static void ctcommand(dev_t, int, int); 195 196 static const struct ctinfo { 197 short hwid; 198 short punit; 199 const char *desc; 200 } ctinfo[] = { 201 { CT7946ID, 1, "7946A" }, 202 { CT7912PID, 1, "7912P" }, 203 { CT7914PID, 1, "7914P" }, 204 { CT9144ID, 0, "9144" }, 205 { CT9145ID, 0, "9145" }, 206 { CT35401ID, 0, "35401A"}, 207 }; 208 static const int nctinfo = __arraycount(ctinfo); 209 210 #define CT_NOREW 4 211 #define CT_STREAM 8 212 #define UNIT(x) (minor(x) & 3) 213 #define ctpunit(x) ((x) & 7) 214 215 #ifdef DEBUG 216 int ctdebug = 0; 217 #define CDB_FILES 0x01 218 #define CT_BSF 0x02 219 #endif 220 221 static int 222 ctmatch(device_t parent, cfdata_t cf, void *aux) 223 { 224 struct hpibbus_attach_args *ha = aux; 225 226 return ctident(parent, NULL, ha); 227 } 228 229 static void 230 ctattach(device_t parent, device_t self, void *aux) 231 { 232 struct ct_softc *sc = device_private(self); 233 struct hpibbus_attach_args *ha = aux; 234 235 sc->sc_dev = self; 236 if (ctident(parent, sc, ha) == 0) { 237 aprint_error(": didn't respond to describe command!\n"); 238 return; 239 } 240 241 sc->sc_slave = ha->ha_slave; 242 sc->sc_punit = ha->ha_punit; 243 244 bufq_alloc(&sc->sc_tab, "fcfs", 0); 245 246 /* Initialize hpib job queue entry. */ 247 sc->sc_hq.hq_softc = sc; 248 sc->sc_hq.hq_slave = sc->sc_slave; 249 sc->sc_hq.hq_start = ctstart; 250 sc->sc_hq.hq_go = ctgo; 251 sc->sc_hq.hq_intr = ctintr; 252 253 ctreset(sc); 254 sc->sc_flags |= CTF_ALIVE; 255 } 256 257 static int 258 ctident(device_t parent, struct ct_softc *sc, struct hpibbus_attach_args *ha) 259 { 260 struct cs80_describe desc; 261 u_char stat, cmd[3]; 262 char name[7]; 263 int i, id, n, type, canstream; 264 265 type = canstream = 0; 266 267 /* Verify that we have a CS80 device. */ 268 if ((ha->ha_id & 0x200) == 0) 269 return 0; 270 271 /* Is it one of the tapes we support? */ 272 for (id = 0; id < nctinfo; id++) 273 if (ha->ha_id == ctinfo[id].hwid && 274 ha->ha_punit == ctinfo[id].punit) 275 break; 276 if (id == nctinfo) 277 return 0; 278 279 /* 280 * So far, so good. Get drive parameters. Note command 281 * is always issued to unit 0. 282 */ 283 cmd[0] = C_SUNIT(0); 284 cmd[1] = C_SVOL(0); 285 cmd[2] = C_DESC; 286 hpibsend(device_unit(parent), ha->ha_slave, C_CMD, cmd, sizeof(cmd)); 287 hpibrecv(device_unit(parent), ha->ha_slave, C_EXEC, &desc, 288 sizeof(desc)); 289 hpibrecv(device_unit(parent), ha->ha_slave, C_QSTAT, &stat, 290 sizeof(stat)); 291 292 memset(name, 0, sizeof(name)); 293 if (stat == 0) { 294 n = desc.d_name; 295 for (i = 5; i >= 0; i--) { 296 name[i] = (n & 0xf) + '0'; 297 n >>= 4; 298 } 299 } 300 301 switch (ha->ha_id) { 302 case CT7946ID: 303 if (memcmp(name, "079450", 6) == 0) 304 return 0; /* not really a 7946 */ 305 /* fall into... */ 306 case CT9144ID: 307 case CT9145ID: 308 case CT35401ID: 309 type = CT9144; 310 canstream = 1; 311 break; 312 313 case CT7912PID: 314 case CT7914PID: 315 type = CT88140; 316 break; 317 } 318 319 if (sc != NULL) { 320 sc->sc_type = type; 321 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 322 aprint_normal(": %s %stape\n", ctinfo[id].desc, 323 canstream ? "streaming " : ""); 324 } 325 326 return 1; 327 } 328 329 static void 330 ctreset(struct ct_softc *sc) 331 { 332 int ctlr, slave; 333 uint8_t stat; 334 335 ctlr = device_unit(device_parent(sc->sc_dev)); 336 slave = sc->sc_slave; 337 338 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 339 sc->sc_clear.cmd = C_CLEAR; 340 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 341 hpibswait(ctlr, slave); 342 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 343 344 sc->sc_src.unit = C_SUNIT(CTCTLR); 345 sc->sc_src.nop = C_NOP; 346 sc->sc_src.cmd = C_SREL; 347 sc->sc_src.param = C_REL; 348 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 349 hpibswait(ctlr, slave); 350 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 351 352 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 353 sc->sc_ssmc.cmd = C_SSM; 354 sc->sc_ssmc.refm = REF_MASK; 355 sc->sc_ssmc.fefm = FEF_MASK; 356 sc->sc_ssmc.aefm = AEF_MASK; 357 sc->sc_ssmc.iefm = IEF_MASK; 358 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 359 hpibswait(ctlr, slave); 360 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 361 362 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 363 sc->sc_soptc.nop = C_NOP; 364 sc->sc_soptc.cmd = C_SOPT; 365 sc->sc_soptc.opt = C_SPAR; 366 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 367 hpibswait(ctlr, slave); 368 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 369 } 370 371 /*ARGSUSED*/ 372 static int 373 ctopen(dev_t dev, int flag, int type, struct lwp *l) 374 { 375 struct ct_softc *sc; 376 uint8_t stat; 377 int cc, ctlr, slave; 378 379 sc = device_lookup_private(&ct_cd, UNIT(dev)); 380 if (sc == NULL) 381 return ENXIO; 382 383 if ((sc->sc_flags & CTF_ALIVE) == 0) 384 return ENXIO; 385 386 if (sc->sc_flags & CTF_OPEN) 387 return EBUSY; 388 389 ctlr = device_unit(device_parent(sc->sc_dev)); 390 slave = sc->sc_slave; 391 392 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 393 sc->sc_soptc.nop = C_NOP; 394 sc->sc_soptc.cmd = C_SOPT; 395 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 396 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 397 else 398 sc->sc_soptc.opt = C_SPAR; 399 400 /* 401 * Check the return of hpibsend() and hpibswait(). 402 * Drive could be loading/unloading a tape. If not checked, 403 * driver hangs. 404 */ 405 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 406 if (cc != sizeof(sc->sc_soptc)) 407 return EBUSY; 408 409 hpibswait(ctlr, slave); 410 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 411 if (cc != sizeof(stat)) 412 return EBUSY; 413 414 sc->sc_tpr = tprintf_open(l->l_proc); 415 sc->sc_flags |= CTF_OPEN; 416 return 0; 417 } 418 419 /*ARGSUSED*/ 420 static int 421 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 422 { 423 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 424 425 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 426 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 427 ctcommand(dev, MTWEOF, 2); 428 ctcommand(dev, MTBSR, 1); 429 if (sc->sc_eofp == EOFS - 1) 430 sc->sc_eofs[EOFS - 1]--; 431 else 432 sc->sc_eofp--; 433 #ifdef DEBUG 434 if(ctdebug & CT_BSF) 435 printf("%s: ctclose backup eofs prt %d blk %d\n", 436 device_xname(sc->sc_dev), sc->sc_eofp, 437 sc->sc_eofs[sc->sc_eofp]); 438 #endif 439 } 440 if ((minor(dev) & CT_NOREW) == 0) 441 ctcommand(dev, MTREW, 1); 442 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 443 tprintf_close(sc->sc_tpr); 444 #ifdef DEBUG 445 if (ctdebug & CDB_FILES) 446 printf("ctclose: flags %x\n", sc->sc_flags); 447 #endif 448 return 0; /* XXX */ 449 } 450 451 static void 452 ctcommand(dev_t dev, int cmd, int cnt) 453 { 454 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 455 struct buf *bp = &sc->sc_bufstore; 456 struct buf *nbp = 0; 457 458 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 459 cnt = sc->sc_eofs[EOFS - 1] - cnt; 460 ctcommand(dev, MTREW, 1); 461 ctcommand(dev, MTFSF, cnt); 462 cnt = 2; 463 cmd = MTBSR; 464 } 465 466 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 467 cnt = 1; 468 cmd = MTREW; 469 } 470 471 sc->sc_flags |= CTF_CMD; 472 sc->sc_bp = bp; 473 sc->sc_cmd = cmd; 474 bp->b_dev = dev; 475 if (cmd == MTFSF) { 476 nbp = (struct buf *)geteblk(MAXBSIZE); 477 bp->b_data = nbp->b_data; 478 bp->b_bcount = MAXBSIZE; 479 } 480 481 while (cnt-- > 0) { 482 bp->b_cflags = BC_BUSY; 483 if (cmd == MTBSF) { 484 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 485 sc->sc_eofp--; 486 #ifdef DEBUG 487 if (ctdebug & CT_BSF) 488 printf("%s: backup eof pos %d blk %d\n", 489 device_xname(sc->sc_dev), sc->sc_eofp, 490 sc->sc_eofs[sc->sc_eofp]); 491 #endif 492 } 493 ctstrategy(bp); 494 biowait(bp); 495 } 496 bp->b_flags = 0; 497 sc->sc_flags &= ~CTF_CMD; 498 if (nbp) 499 brelse(nbp, 0); 500 } 501 502 static void 503 ctstrategy(struct buf *bp) 504 { 505 int s; 506 struct ct_softc *sc; 507 508 sc = device_lookup_private(&ct_cd, UNIT(bp->b_dev)); 509 510 s = splbio(); 511 bufq_put(sc->sc_tab, bp); 512 if (sc->sc_active == 0) { 513 sc->sc_active = 1; 514 ctustart(sc); 515 } 516 splx(s); 517 } 518 519 static void 520 ctustart(struct ct_softc *sc) 521 { 522 struct buf *bp; 523 524 bp = bufq_peek(sc->sc_tab); 525 sc->sc_addr = bp->b_data; 526 sc->sc_resid = bp->b_bcount; 527 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 528 ctstart(sc); 529 } 530 531 static void 532 ctstart(void *arg) 533 { 534 struct ct_softc *sc = arg; 535 struct buf *bp; 536 int i, ctlr, slave; 537 538 ctlr = device_unit(device_parent(sc->sc_dev)); 539 slave = sc->sc_slave; 540 541 bp = bufq_peek(sc->sc_tab); 542 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 543 switch(sc->sc_cmd) { 544 case MTFSF: 545 bp->b_flags |= B_READ; 546 goto mustio; 547 548 case MTBSF: 549 goto gotaddr; 550 551 case MTOFFL: 552 sc->sc_blkno = 0; 553 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 554 sc->sc_ul.cmd = C_UNLOAD; 555 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 556 sizeof(sc->sc_ul)); 557 break; 558 559 case MTWEOF: 560 sc->sc_blkno++; 561 sc->sc_flags |= CTF_WRT; 562 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 563 sc->sc_wfm.cmd = C_WFM; 564 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 565 sizeof(sc->sc_wfm)); 566 ctaddeof(sc); 567 break; 568 569 case MTBSR: 570 sc->sc_blkno--; 571 goto gotaddr; 572 573 case MTFSR: 574 sc->sc_blkno++; 575 goto gotaddr; 576 577 case MTREW: 578 sc->sc_blkno = 0; 579 #ifdef DEBUG 580 if(ctdebug & CT_BSF) 581 printf("%s: clearing eofs\n", 582 device_xname(sc->sc_dev)); 583 #endif 584 for (i=0; i<EOFS; i++) 585 sc->sc_eofs[i] = 0; 586 sc->sc_eofp = 0; 587 588 gotaddr: 589 sc->sc_ioc.saddr = C_SADDR; 590 sc->sc_ioc.addr0 = 0; 591 sc->sc_ioc.addr = sc->sc_blkno; 592 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 593 sc->sc_ioc.nop2 = C_NOP; 594 sc->sc_ioc.slen = C_SLEN; 595 sc->sc_ioc.len = 0; 596 sc->sc_ioc.nop3 = C_NOP; 597 sc->sc_ioc.cmd = C_READ; 598 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 599 sizeof(sc->sc_ioc)); 600 break; 601 } 602 } else { 603 mustio: 604 if ((bp->b_flags & B_READ) && 605 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 606 #ifdef DEBUG 607 if (ctdebug & CDB_FILES) 608 printf("ctstart: before flags %x\n", 609 sc->sc_flags); 610 #endif 611 if (sc->sc_flags & CTF_BEOF) { 612 sc->sc_flags &= ~CTF_BEOF; 613 sc->sc_flags |= CTF_AEOF; 614 #ifdef DEBUG 615 if (ctdebug & CDB_FILES) 616 printf("ctstart: after flags %x\n", 617 sc->sc_flags); 618 #endif 619 } 620 bp->b_resid = bp->b_bcount; 621 ctdone(sc, bp); 622 return; 623 } 624 sc->sc_flags |= CTF_IO; 625 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 626 sc->sc_ioc.saddr = C_SADDR; 627 sc->sc_ioc.addr0 = 0; 628 sc->sc_ioc.addr = sc->sc_blkno; 629 sc->sc_ioc.nop2 = C_NOP; 630 sc->sc_ioc.slen = C_SLEN; 631 sc->sc_ioc.len = sc->sc_resid; 632 sc->sc_ioc.nop3 = C_NOP; 633 if (bp->b_flags & B_READ) 634 sc->sc_ioc.cmd = C_READ; 635 else { 636 sc->sc_ioc.cmd = C_WRITE; 637 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 638 } 639 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 640 } 641 hpibawait(ctlr); 642 } 643 644 static void 645 ctgo(void *arg) 646 { 647 struct ct_softc *sc = arg; 648 struct buf *bp; 649 int rw; 650 651 bp = bufq_peek(sc->sc_tab); 652 rw = bp->b_flags & B_READ; 653 hpibgo(device_unit(device_parent(sc->sc_dev)), sc->sc_slave, C_EXEC, 654 sc->sc_addr, sc->sc_resid, rw, rw != 0); 655 } 656 657 /* 658 * Hideous grue to handle EOF/EOT (mostly for reads) 659 */ 660 static void 661 cteof(struct ct_softc *sc, struct buf *bp) 662 { 663 long blks; 664 665 /* 666 * EOT on a write is an error. 667 */ 668 if ((bp->b_flags & B_READ) == 0) { 669 bp->b_resid = bp->b_bcount; 670 bp->b_error = ENOSPC; 671 sc->sc_flags |= CTF_EOT; 672 return; 673 } 674 /* 675 * Use returned block position to determine how many blocks 676 * we really read and update b_resid. 677 */ 678 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 679 #ifdef DEBUG 680 if (ctdebug & CDB_FILES) 681 printf("cteof: bc %d oblk %d nblk %ld read %ld, resid %ld\n", 682 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 683 blks, bp->b_bcount - CTKTOB(blks)); 684 #endif 685 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 686 blks = 0; 687 sc->sc_blkno++; 688 } 689 else { 690 sc->sc_blkno = sc->sc_stat.c_blk; 691 } 692 bp->b_resid = bp->b_bcount - CTKTOB(blks); 693 /* 694 * If we are at physical EOV or were after an EOF, 695 * we are now at logical EOT. 696 */ 697 if ((sc->sc_stat.c_aef & AEF_EOV) || 698 (sc->sc_flags & CTF_AEOF)) { 699 sc->sc_flags |= CTF_EOT; 700 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 701 } 702 /* 703 * If we were before an EOF or we have just completed a FSF, 704 * we are now after EOF. 705 */ 706 else if ((sc->sc_flags & CTF_BEOF) || 707 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 708 sc->sc_flags |= CTF_AEOF; 709 sc->sc_flags &= ~CTF_BEOF; 710 } 711 /* 712 * Otherwise if we read something we are now before EOF 713 * (and no longer after EOF). 714 */ 715 else if (blks) { 716 sc->sc_flags |= CTF_BEOF; 717 sc->sc_flags &= ~CTF_AEOF; 718 } 719 /* 720 * Finally, if we didn't read anything we just passed an EOF 721 */ 722 else 723 sc->sc_flags |= CTF_AEOF; 724 #ifdef DEBUG 725 if (ctdebug & CDB_FILES) 726 printf("cteof: leaving flags %x\n", sc->sc_flags); 727 #endif 728 } 729 730 /* ARGSUSED */ 731 static void 732 ctintr(void *arg) 733 { 734 struct ct_softc *sc = arg; 735 struct buf *bp; 736 uint8_t stat; 737 int ctlr, slave; 738 739 ctlr = device_unit(device_parent(sc->sc_dev)); 740 slave = sc->sc_slave; 741 742 bp = bufq_peek(sc->sc_tab); 743 if (bp == NULL) { 744 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 745 return; 746 } 747 if (sc->sc_flags & CTF_IO) { 748 sc->sc_flags &= ~CTF_IO; 749 if (hpibustart(ctlr)) 750 ctgo(sc); 751 return; 752 } 753 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 754 if (hpibpptest(ctlr, slave) == 0) { 755 sc->sc_flags |= CTF_STATWAIT; 756 hpibawait(ctlr); 757 return; 758 } 759 } else 760 sc->sc_flags &= ~CTF_STATWAIT; 761 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 762 #ifdef DEBUG 763 if (ctdebug & CDB_FILES) 764 printf("ctintr: before flags %x\n", sc->sc_flags); 765 #endif 766 if (stat) { 767 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 768 sc->sc_rsc.cmd = C_STATUS; 769 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 770 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 771 sizeof(sc->sc_stat)); 772 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 773 #ifdef DEBUG 774 if (ctdebug & CDB_FILES) 775 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 776 stat, sc->sc_stat.c_aef, 777 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 778 #endif 779 if (stat == 0) { 780 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 781 cteof(sc, bp); 782 ctaddeof(sc); 783 goto done; 784 } 785 if (sc->sc_stat.c_fef & FEF_PF) { 786 ctreset(sc); 787 ctstart(sc); 788 return; 789 } 790 if (sc->sc_stat.c_fef & FEF_REXMT) { 791 ctstart(sc); 792 return; 793 } 794 if (sc->sc_stat.c_aef & 0x5800) { 795 if (sc->sc_stat.c_aef & 0x4000) 796 tprintf(sc->sc_tpr, 797 "%s: uninitialized media\n", 798 device_xname(sc->sc_dev)); 799 if (sc->sc_stat.c_aef & 0x1000) 800 tprintf(sc->sc_tpr, 801 "%s: not ready\n", 802 device_xname(sc->sc_dev)); 803 if (sc->sc_stat.c_aef & 0x0800) 804 tprintf(sc->sc_tpr, 805 "%s: write protect\n", 806 device_xname(sc->sc_dev)); 807 } else { 808 printf("%s err: v%d u%d ru%d bn%ld, ", 809 device_xname(sc->sc_dev), 810 (sc->sc_stat.c_vu >> 4) & 0xF, 811 sc->sc_stat.c_vu & 0xF, 812 sc->sc_stat.c_pend, 813 sc->sc_stat.c_blk); 814 printf("R0x%x F0x%x A0x%x I0x%x\n", 815 sc->sc_stat.c_ref, 816 sc->sc_stat.c_fef, 817 sc->sc_stat.c_aef, 818 sc->sc_stat.c_ief); 819 } 820 } else 821 printf("%s: request status failed\n", 822 device_xname(sc->sc_dev)); 823 bp->b_error = EIO; 824 goto done; 825 } else 826 bp->b_resid = 0; 827 if (sc->sc_flags & CTF_CMD) { 828 switch (sc->sc_cmd) { 829 case MTFSF: 830 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 831 sc->sc_blkno += CTBTOK(sc->sc_resid); 832 ctstart(sc); 833 return; 834 case MTBSF: 835 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 836 break; 837 case MTBSR: 838 sc->sc_flags &= ~CTF_BEOF; 839 if (sc->sc_flags & CTF_EOT) { 840 sc->sc_flags |= CTF_AEOF; 841 sc->sc_flags &= ~CTF_EOT; 842 } else if (sc->sc_flags & CTF_AEOF) { 843 sc->sc_flags |= CTF_BEOF; 844 sc->sc_flags &= ~CTF_AEOF; 845 } 846 break; 847 case MTWEOF: 848 sc->sc_flags &= ~CTF_BEOF; 849 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 850 sc->sc_flags |= CTF_EOT; 851 sc->sc_flags &= ~CTF_AEOF; 852 } else 853 sc->sc_flags |= CTF_AEOF; 854 break; 855 case MTREW: 856 case MTOFFL: 857 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 858 break; 859 } 860 } else { 861 sc->sc_flags &= ~CTF_AEOF; 862 sc->sc_blkno += CTBTOK(sc->sc_resid); 863 } 864 done: 865 #ifdef DEBUG 866 if (ctdebug & CDB_FILES) 867 printf("ctintr: after flags %x\n", sc->sc_flags); 868 #endif 869 ctdone(sc, bp); 870 } 871 872 static void 873 ctdone(struct ct_softc *sc, struct buf *bp) 874 { 875 876 (void)bufq_get(sc->sc_tab); 877 biodone(bp); 878 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 879 if (bufq_peek(sc->sc_tab) == NULL) { 880 sc->sc_active = 0; 881 return; 882 } 883 ctustart(sc); 884 } 885 886 static int 887 ctread(dev_t dev, struct uio *uio, int flags) 888 { 889 890 return physio(ctstrategy, NULL, dev, B_READ, minphys, uio); 891 } 892 893 static int 894 ctwrite(dev_t dev, struct uio *uio, int flags) 895 { 896 897 /* XXX: check for hardware write-protect? */ 898 return physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio); 899 } 900 901 /*ARGSUSED*/ 902 static int 903 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 904 { 905 struct mtop *op; 906 int cnt; 907 908 switch (cmd) { 909 910 case MTIOCTOP: 911 op = (struct mtop *)data; 912 switch(op->mt_op) { 913 914 case MTWEOF: 915 case MTFSF: 916 case MTBSR: 917 case MTBSF: 918 case MTFSR: 919 cnt = op->mt_count; 920 break; 921 922 case MTREW: 923 case MTOFFL: 924 cnt = 1; 925 break; 926 927 default: 928 return EINVAL; 929 } 930 ctcommand(dev, op->mt_op, cnt); 931 break; 932 933 case MTIOCGET: 934 break; 935 936 default: 937 return EINVAL; 938 } 939 return 0; 940 } 941 942 static void 943 ctaddeof(struct ct_softc *sc) 944 { 945 946 if (sc->sc_eofp == EOFS - 1) 947 sc->sc_eofs[EOFS - 1]++; 948 else { 949 sc->sc_eofp++; 950 if (sc->sc_eofp == EOFS - 1) 951 sc->sc_eofs[EOFS - 1] = EOFS; 952 else 953 /* save blkno */ 954 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 955 } 956 #ifdef DEBUG 957 if (ctdebug & CT_BSF) 958 printf("%s: add eof pos %d blk %d\n", 959 device_xname(sc->sc_dev), sc->sc_eofp, 960 sc->sc_eofs[sc->sc_eofp]); 961 #endif 962 } 963
Indexes created Wed Sep 24 15:09:51 GMT 2025