1 /* $NetBSD: ct.c,v 1.64 2023/04/21 23:01:59 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 1.64 2023/04/21 23:01:59 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 static int 372 ctopen(dev_t dev, int flag, int type, struct lwp *l) 373 { 374 struct ct_softc *sc; 375 uint8_t stat; 376 int cc, ctlr, slave; 377 378 sc = device_lookup_private(&ct_cd, UNIT(dev)); 379 if (sc == NULL) 380 return ENXIO; 381 382 if ((sc->sc_flags & CTF_ALIVE) == 0) 383 return ENXIO; 384 385 if (sc->sc_flags & CTF_OPEN) 386 return EBUSY; 387 388 ctlr = device_unit(device_parent(sc->sc_dev)); 389 slave = sc->sc_slave; 390 391 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 392 sc->sc_soptc.nop = C_NOP; 393 sc->sc_soptc.cmd = C_SOPT; 394 if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM)) 395 sc->sc_soptc.opt = C_SPAR | C_IMRPT; 396 else 397 sc->sc_soptc.opt = C_SPAR; 398 399 /* 400 * Check the return of hpibsend() and hpibswait(). 401 * Drive could be loading/unloading a tape. If not checked, 402 * driver hangs. 403 */ 404 cc = hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 405 if (cc != sizeof(sc->sc_soptc)) 406 return EBUSY; 407 408 hpibswait(ctlr, slave); 409 cc = hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 410 if (cc != sizeof(stat)) 411 return EBUSY; 412 413 sc->sc_tpr = tprintf_open(l->l_proc); 414 sc->sc_flags |= CTF_OPEN; 415 return 0; 416 } 417 418 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 static void 729 ctintr(void *arg) 730 { 731 struct ct_softc *sc = arg; 732 struct buf *bp; 733 uint8_t stat; 734 int ctlr, slave; 735 736 ctlr = device_unit(device_parent(sc->sc_dev)); 737 slave = sc->sc_slave; 738 739 bp = bufq_peek(sc->sc_tab); 740 if (bp == NULL) { 741 printf("%s: bp == NULL\n", device_xname(sc->sc_dev)); 742 return; 743 } 744 if (sc->sc_flags & CTF_IO) { 745 sc->sc_flags &= ~CTF_IO; 746 if (hpibustart(ctlr)) 747 ctgo(sc); 748 return; 749 } 750 if ((sc->sc_flags & CTF_STATWAIT) == 0) { 751 if (hpibpptest(ctlr, slave) == 0) { 752 sc->sc_flags |= CTF_STATWAIT; 753 hpibawait(ctlr); 754 return; 755 } 756 } else 757 sc->sc_flags &= ~CTF_STATWAIT; 758 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 759 #ifdef DEBUG 760 if (ctdebug & CDB_FILES) 761 printf("ctintr: before flags %x\n", sc->sc_flags); 762 #endif 763 if (stat) { 764 sc->sc_rsc.unit = C_SUNIT(sc->sc_punit); 765 sc->sc_rsc.cmd = C_STATUS; 766 hpibsend(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc)); 767 hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat, 768 sizeof(sc->sc_stat)); 769 hpibrecv(ctlr, slave, C_QSTAT, &stat, 1); 770 #ifdef DEBUG 771 if (ctdebug & CDB_FILES) 772 printf("ctintr: return stat 0x%x, A%x F%x blk %ld\n", 773 stat, sc->sc_stat.c_aef, 774 sc->sc_stat.c_fef, sc->sc_stat.c_blk); 775 #endif 776 if (stat == 0) { 777 if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) { 778 cteof(sc, bp); 779 ctaddeof(sc); 780 goto done; 781 } 782 if (sc->sc_stat.c_fef & FEF_PF) { 783 ctreset(sc); 784 ctstart(sc); 785 return; 786 } 787 if (sc->sc_stat.c_fef & FEF_REXMT) { 788 ctstart(sc); 789 return; 790 } 791 if (sc->sc_stat.c_aef & 0x5800) { 792 if (sc->sc_stat.c_aef & 0x4000) 793 tprintf(sc->sc_tpr, 794 "%s: uninitialized media\n", 795 device_xname(sc->sc_dev)); 796 if (sc->sc_stat.c_aef & 0x1000) 797 tprintf(sc->sc_tpr, 798 "%s: not ready\n", 799 device_xname(sc->sc_dev)); 800 if (sc->sc_stat.c_aef & 0x0800) 801 tprintf(sc->sc_tpr, 802 "%s: write protect\n", 803 device_xname(sc->sc_dev)); 804 } else { 805 printf("%s err: v%d u%d ru%d bn%ld, ", 806 device_xname(sc->sc_dev), 807 (sc->sc_stat.c_vu >> 4) & 0xF, 808 sc->sc_stat.c_vu & 0xF, 809 sc->sc_stat.c_pend, 810 sc->sc_stat.c_blk); 811 printf("R0x%x F0x%x A0x%x I0x%x\n", 812 sc->sc_stat.c_ref, 813 sc->sc_stat.c_fef, 814 sc->sc_stat.c_aef, 815 sc->sc_stat.c_ief); 816 } 817 } else 818 printf("%s: request status failed\n", 819 device_xname(sc->sc_dev)); 820 bp->b_error = EIO; 821 goto done; 822 } else 823 bp->b_resid = 0; 824 if (sc->sc_flags & CTF_CMD) { 825 switch (sc->sc_cmd) { 826 case MTFSF: 827 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF); 828 sc->sc_blkno += CTBTOK(sc->sc_resid); 829 ctstart(sc); 830 return; 831 case MTBSF: 832 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT); 833 break; 834 case MTBSR: 835 sc->sc_flags &= ~CTF_BEOF; 836 if (sc->sc_flags & CTF_EOT) { 837 sc->sc_flags |= CTF_AEOF; 838 sc->sc_flags &= ~CTF_EOT; 839 } else if (sc->sc_flags & CTF_AEOF) { 840 sc->sc_flags |= CTF_BEOF; 841 sc->sc_flags &= ~CTF_AEOF; 842 } 843 break; 844 case MTWEOF: 845 sc->sc_flags &= ~CTF_BEOF; 846 if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) { 847 sc->sc_flags |= CTF_EOT; 848 sc->sc_flags &= ~CTF_AEOF; 849 } else 850 sc->sc_flags |= CTF_AEOF; 851 break; 852 case MTREW: 853 case MTOFFL: 854 sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT); 855 break; 856 } 857 } else { 858 sc->sc_flags &= ~CTF_AEOF; 859 sc->sc_blkno += CTBTOK(sc->sc_resid); 860 } 861 done: 862 #ifdef DEBUG 863 if (ctdebug & CDB_FILES) 864 printf("ctintr: after flags %x\n", sc->sc_flags); 865 #endif 866 ctdone(sc, bp); 867 } 868 869 static void 870 ctdone(struct ct_softc *sc, struct buf *bp) 871 { 872 873 (void)bufq_get(sc->sc_tab); 874 biodone(bp); 875 hpibfree(device_parent(sc->sc_dev), &sc->sc_hq); 876 if (bufq_peek(sc->sc_tab) == NULL) { 877 sc->sc_active = 0; 878 return; 879 } 880 ctustart(sc); 881 } 882 883 static int 884 ctread(dev_t dev, struct uio *uio, int flags) 885 { 886 887 return physio(ctstrategy, NULL, dev, B_READ, minphys, uio); 888 } 889 890 static int 891 ctwrite(dev_t dev, struct uio *uio, int flags) 892 { 893 894 /* XXX: check for hardware write-protect? */ 895 return physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio); 896 } 897 898 static int 899 ctioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 900 { 901 struct mtop *op; 902 int cnt; 903 904 switch (cmd) { 905 906 case MTIOCTOP: 907 op = (struct mtop *)data; 908 switch(op->mt_op) { 909 910 case MTWEOF: 911 case MTFSF: 912 case MTBSR: 913 case MTBSF: 914 case MTFSR: 915 cnt = op->mt_count; 916 break; 917 918 case MTREW: 919 case MTOFFL: 920 cnt = 1; 921 break; 922 923 default: 924 return EINVAL; 925 } 926 ctcommand(dev, op->mt_op, cnt); 927 break; 928 929 case MTIOCGET: 930 break; 931 932 default: 933 return EINVAL; 934 } 935 return 0; 936 } 937 938 static void 939 ctaddeof(struct ct_softc *sc) 940 { 941 942 if (sc->sc_eofp == EOFS - 1) 943 sc->sc_eofs[EOFS - 1]++; 944 else { 945 sc->sc_eofp++; 946 if (sc->sc_eofp == EOFS - 1) 947 sc->sc_eofs[EOFS - 1] = EOFS; 948 else 949 /* save blkno */ 950 sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1; 951 } 952 #ifdef DEBUG 953 if (ctdebug & CT_BSF) 954 printf("%s: add eof pos %d blk %d\n", 955 device_xname(sc->sc_dev), sc->sc_eofp, 956 sc->sc_eofs[sc->sc_eofp]); 957 #endif 958 } 959
Indexes created Sat Sep 20 22:09:52 GMT 2025