ct.c revision 1.62
1 /* $NetBSD: ct.c,v 1.62 2021/07/05 14:03:46 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 1.62 2021/07/05 14:03:46 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 ct_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, 37); 288 hpibrecv(device_unit(parent), ha->ha_slave, C_QSTAT, &stat, 289 sizeof(stat)); 290 291 memset(name, 0, sizeof(name)); 292 if (stat == 0) { 293 n = desc.d_name; 294 for (i = 5; i >= 0; i--) { 295 name[i] = (n & 0xf) + '0'; 296 n >>= 4; 297 } 298 } 299 300 switch (ha->ha_id) { 301 case CT7946ID: 302 if (memcmp(name, "079450", 6) == 0) 303 return 0; /* not really a 7946 */ 304 /* fall into... */ 305 case CT9144ID: 306 case CT9145ID: 307 case CT35401ID: 308 type = CT9144; 309 canstream = 1; 310 break; 311 312 case CT7912PID: 313 case CT7914PID: 314 type = CT88140; 315 break; 316 } 317 318 if (sc != NULL) { 319 sc->sc_type = type; 320 sc->sc_flags = canstream ? CTF_CANSTREAM : 0; 321 aprint_normal(": %s %stape\n", ctinfo[id].desc, 322 canstream ? "streaming " : ""); 323 } 324 325 return 1; 326 } 327 328 static void 329 ctreset(struct ct_softc *sc) 330 { 331 int ctlr, slave; 332 uint8_t stat; 333 334 ctlr = device_unit(device_parent(sc->sc_dev)); 335 slave = sc->sc_slave; 336 337 sc->sc_clear.unit = C_SUNIT(sc->sc_punit); 338 sc->sc_clear.cmd = C_CLEAR; 339 hpibsend(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear)); 340 hpibswait(ctlr, slave); 341 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 342 343 sc->sc_src.unit = C_SUNIT(CTCTLR); 344 sc->sc_src.nop = C_NOP; 345 sc->sc_src.cmd = C_SREL; 346 sc->sc_src.param = C_REL; 347 hpibsend(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src)); 348 hpibswait(ctlr, slave); 349 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 350 351 sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit); 352 sc->sc_ssmc.cmd = C_SSM; 353 sc->sc_ssmc.refm = REF_MASK; 354 sc->sc_ssmc.fefm = FEF_MASK; 355 sc->sc_ssmc.aefm = AEF_MASK; 356 sc->sc_ssmc.iefm = IEF_MASK; 357 hpibsend(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc)); 358 hpibswait(ctlr, slave); 359 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 360 361 sc->sc_soptc.unit = C_SUNIT(sc->sc_punit); 362 sc->sc_soptc.nop = C_NOP; 363 sc->sc_soptc.cmd = C_SOPT; 364 sc->sc_soptc.opt = C_SPAR; 365 hpibsend(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc)); 366 hpibswait(ctlr, slave); 367 hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat)); 368 } 369 370 /*ARGSUSED*/ 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 /*ARGSUSED*/ 419 static int 420 ctclose(dev_t dev, int flag, int fmt, struct lwp *l) 421 { 422 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 423 424 if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) && 425 (sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */ 426 ctcommand(dev, MTWEOF, 2); 427 ctcommand(dev, MTBSR, 1); 428 if (sc->sc_eofp == EOFS - 1) 429 sc->sc_eofs[EOFS - 1]--; 430 else 431 sc->sc_eofp--; 432 #ifdef DEBUG 433 if(ctdebug & CT_BSF) 434 printf("%s: ctclose backup eofs prt %d blk %d\n", 435 device_xname(sc->sc_dev), sc->sc_eofp, 436 sc->sc_eofs[sc->sc_eofp]); 437 #endif 438 } 439 if ((minor(dev) & CT_NOREW) == 0) 440 ctcommand(dev, MTREW, 1); 441 sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN); 442 tprintf_close(sc->sc_tpr); 443 #ifdef DEBUG 444 if (ctdebug & CDB_FILES) 445 printf("ctclose: flags %x\n", sc->sc_flags); 446 #endif 447 return 0; /* XXX */ 448 } 449 450 static void 451 ctcommand(dev_t dev, int cmd, int cnt) 452 { 453 struct ct_softc *sc = device_lookup_private(&ct_cd,UNIT(dev)); 454 struct buf *bp = &sc->sc_bufstore; 455 struct buf *nbp = 0; 456 457 if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) { 458 cnt = sc->sc_eofs[EOFS - 1] - cnt; 459 ctcommand(dev, MTREW, 1); 460 ctcommand(dev, MTFSF, cnt); 461 cnt = 2; 462 cmd = MTBSR; 463 } 464 465 if (cmd == MTBSF && sc->sc_eofp - cnt < 0) { 466 cnt = 1; 467 cmd = MTREW; 468 } 469 470 sc->sc_flags |= CTF_CMD; 471 sc->sc_bp = bp; 472 sc->sc_cmd = cmd; 473 bp->b_dev = dev; 474 if (cmd == MTFSF) { 475 nbp = (struct buf *)geteblk(MAXBSIZE); 476 bp->b_data = nbp->b_data; 477 bp->b_bcount = MAXBSIZE; 478 } 479 480 while (cnt-- > 0) { 481 bp->b_cflags = BC_BUSY; 482 if (cmd == MTBSF) { 483 sc->sc_blkno = sc->sc_eofs[sc->sc_eofp]; 484 sc->sc_eofp--; 485 #ifdef DEBUG 486 if (ctdebug & CT_BSF) 487 printf("%s: backup eof pos %d blk %d\n", 488 device_xname(sc->sc_dev), sc->sc_eofp, 489 sc->sc_eofs[sc->sc_eofp]); 490 #endif 491 } 492 ctstrategy(bp); 493 biowait(bp); 494 } 495 bp->b_flags = 0; 496 sc->sc_flags &= ~CTF_CMD; 497 if (nbp) 498 brelse(nbp, 0); 499 } 500 501 static void 502 ctstrategy(struct buf *bp) 503 { 504 int s; 505 struct ct_softc *sc; 506 507 sc = device_lookup_private(&ct_cd, UNIT(bp->b_dev)); 508 509 s = splbio(); 510 bufq_put(sc->sc_tab, bp); 511 if (sc->sc_active == 0) { 512 sc->sc_active = 1; 513 ctustart(sc); 514 } 515 splx(s); 516 } 517 518 static void 519 ctustart(struct ct_softc *sc) 520 { 521 struct buf *bp; 522 523 bp = bufq_peek(sc->sc_tab); 524 sc->sc_addr = bp->b_data; 525 sc->sc_resid = bp->b_bcount; 526 if (hpibreq(device_parent(sc->sc_dev), &sc->sc_hq)) 527 ctstart(sc); 528 } 529 530 static void 531 ctstart(void *arg) 532 { 533 struct ct_softc *sc = arg; 534 struct buf *bp; 535 int i, ctlr, slave; 536 537 ctlr = device_unit(device_parent(sc->sc_dev)); 538 slave = sc->sc_slave; 539 540 bp = bufq_peek(sc->sc_tab); 541 if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) { 542 switch(sc->sc_cmd) { 543 case MTFSF: 544 bp->b_flags |= B_READ; 545 goto mustio; 546 547 case MTBSF: 548 goto gotaddr; 549 550 case MTOFFL: 551 sc->sc_blkno = 0; 552 sc->sc_ul.unit = C_SUNIT(sc->sc_punit); 553 sc->sc_ul.cmd = C_UNLOAD; 554 hpibsend(ctlr, slave, C_CMD, &sc->sc_ul, 555 sizeof(sc->sc_ul)); 556 break; 557 558 case MTWEOF: 559 sc->sc_blkno++; 560 sc->sc_flags |= CTF_WRT; 561 sc->sc_wfm.unit = C_SUNIT(sc->sc_punit); 562 sc->sc_wfm.cmd = C_WFM; 563 hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm, 564 sizeof(sc->sc_wfm)); 565 ctaddeof(sc); 566 break; 567 568 case MTBSR: 569 sc->sc_blkno--; 570 goto gotaddr; 571 572 case MTFSR: 573 sc->sc_blkno++; 574 goto gotaddr; 575 576 case MTREW: 577 sc->sc_blkno = 0; 578 #ifdef DEBUG 579 if(ctdebug & CT_BSF) 580 printf("%s: clearing eofs\n", 581 device_xname(sc->sc_dev)); 582 #endif 583 for (i=0; i<EOFS; i++) 584 sc->sc_eofs[i] = 0; 585 sc->sc_eofp = 0; 586 587 gotaddr: 588 sc->sc_ioc.saddr = C_SADDR; 589 sc->sc_ioc.addr0 = 0; 590 sc->sc_ioc.addr = sc->sc_blkno; 591 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 592 sc->sc_ioc.nop2 = C_NOP; 593 sc->sc_ioc.slen = C_SLEN; 594 sc->sc_ioc.len = 0; 595 sc->sc_ioc.nop3 = C_NOP; 596 sc->sc_ioc.cmd = C_READ; 597 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, 598 sizeof(sc->sc_ioc)); 599 break; 600 } 601 } else { 602 mustio: 603 if ((bp->b_flags & B_READ) && 604 sc->sc_flags & (CTF_BEOF|CTF_EOT)) { 605 #ifdef DEBUG 606 if (ctdebug & CDB_FILES) 607 printf("ctstart: before flags %x\n", 608 sc->sc_flags); 609 #endif 610 if (sc->sc_flags & CTF_BEOF) { 611 sc->sc_flags &= ~CTF_BEOF; 612 sc->sc_flags |= CTF_AEOF; 613 #ifdef DEBUG 614 if (ctdebug & CDB_FILES) 615 printf("ctstart: after flags %x\n", 616 sc->sc_flags); 617 #endif 618 } 619 bp->b_resid = bp->b_bcount; 620 ctdone(sc, bp); 621 return; 622 } 623 sc->sc_flags |= CTF_IO; 624 sc->sc_ioc.unit = C_SUNIT(sc->sc_punit); 625 sc->sc_ioc.saddr = C_SADDR; 626 sc->sc_ioc.addr0 = 0; 627 sc->sc_ioc.addr = sc->sc_blkno; 628 sc->sc_ioc.nop2 = C_NOP; 629 sc->sc_ioc.slen = C_SLEN; 630 sc->sc_ioc.len = sc->sc_resid; 631 sc->sc_ioc.nop3 = C_NOP; 632 if (bp->b_flags & B_READ) 633 sc->sc_ioc.cmd = C_READ; 634 else { 635 sc->sc_ioc.cmd = C_WRITE; 636 sc->sc_flags |= (CTF_WRT | CTF_WRTTN); 637 } 638 hpibsend(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc)); 639 } 640 hpibawait(ctlr); 641 } 642 643 static void 644 ctgo(void *arg) 645 { 646 struct ct_softc *sc = arg; 647 struct buf *bp; 648 int rw; 649 650 bp = bufq_peek(sc->sc_tab); 651 rw = bp->b_flags & B_READ; 652 hpibgo(device_unit(device_parent(sc->sc_dev)), sc->sc_slave, C_EXEC, 653 sc->sc_addr, sc->sc_resid, rw, rw != 0); 654 } 655 656 /* 657 * Hideous grue to handle EOF/EOT (mostly for reads) 658 */ 659 static void 660 cteof(struct ct_softc *sc, struct buf *bp) 661 { 662 long blks; 663 664 /* 665 * EOT on a write is an error. 666 */ 667 if ((bp->b_flags & B_READ) == 0) { 668 bp->b_resid = bp->b_bcount; 669 bp->b_error = ENOSPC; 670 sc->sc_flags |= CTF_EOT; 671 return; 672 } 673 /* 674 * Use returned block position to determine how many blocks 675 * we really read and update b_resid. 676 */ 677 blks = sc->sc_stat.c_blk - sc->sc_blkno - 1; 678 #ifdef DEBUG 679 if (ctdebug & CDB_FILES) 680 printf("cteof: bc %d oblk %d nblk %ld read %ld, resid %ld\n", 681 bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk, 682 blks, bp->b_bcount - CTKTOB(blks)); 683 #endif 684 if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */ 685 blks = 0; 686 sc->sc_blkno++; 687 } 688 else { 689 sc->sc_blkno = sc->sc_stat.c_blk; 690 } 691 bp->b_resid = bp->b_bcount - CTKTOB(blks); 692 /* 693 * If we are at physical EOV or were after an EOF, 694 * we are now at logical EOT. 695 */ 696 if ((sc->sc_stat.c_aef & AEF_EOV) || 697 (sc->sc_flags & CTF_AEOF)) { 698 sc->sc_flags |= CTF_EOT; 699 sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF); 700 } 701 /* 702 * If we were before an EOF or we have just completed a FSF, 703 * we are now after EOF. 704 */ 705 else if ((sc->sc_flags & CTF_BEOF) || 706 ((sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF)) { 707 sc->sc_flags |= CTF_AEOF; 708 sc->sc_flags &= ~CTF_BEOF; 709 } 710 /* 711 * Otherwise if we read something we are now before EOF 712 * (and no longer after EOF). 713 */ 714 else if (blks) { 715 sc->sc_flags |= CTF_BEOF; 716 sc->sc_flags &= ~CTF_AEOF; 717 } 718 /* 719 * Finally, if we didn't read anything we just passed an EOF 720 */ 721 else 722 sc->sc_flags |= CTF_AEOF; 723 #ifdef DEBUG 724 if (ctdebug & CDB_FILES) 725 printf("cteof: leaving flags %x\n", sc->sc_flags); 726 #endif 727 } 728 729 /* ARGSUSED */ 730 static void 731 ctintr(void *arg) 732 { 733 struct ct_softc *sc = arg; 734 struct buf *bp; 735 uint8_t stat; 736 int ctlr, slave; 737 738 ctlr = device_unit(device_parent(sc->sc_dev)); 739 slave = sc->sc_slave; 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 Wed Sep 24 05:09:52 GMT 2025