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sys/dev/ic/osiop.c
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1 /* $NetBSD: osiop.c,v 1.43 2021/08/07 16:19:12 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* 28 * Copyright (c) 1990 The Regents of the University of California. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to Berkeley by 32 * Van Jacobson of Lawrence Berkeley Laboratory. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. Neither the name of the University nor the names of its contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 * @(#)siop.c 7.5 (Berkeley) 5/4/91 59 */ 60 61 /* 62 * Copyright (c) 1994 Michael L. Hitch 63 * 64 * This code is derived from software contributed to Berkeley by 65 * Van Jacobson of Lawrence Berkeley Laboratory. 66 * 67 * Redistribution and use in source and binary forms, with or without 68 * modification, are permitted provided that the following conditions 69 * are met: 70 * 1. Redistributions of source code must retain the above copyright 71 * notice, this list of conditions and the following disclaimer. 72 * 2. Redistributions in binary form must reproduce the above copyright 73 * notice, this list of conditions and the following disclaimer in the 74 * documentation and/or other materials provided with the distribution. 75 * 76 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 77 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 78 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 79 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 80 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 81 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 82 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 83 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 84 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 85 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 86 * 87 * @(#)siop.c 7.5 (Berkeley) 5/4/91 88 */ 89 90 /* 91 * MI NCR53C710 scsi adaptor driver; based on arch/amiga/dev/siop.c: 92 * NetBSD: siop.c,v 1.43 1999/09/30 22:59:53 thorpej Exp 93 * 94 * bus_space/bus_dma'fied by Izumi Tsutsui <tsutsui@NetBSD.org> 95 */ 96 97 #include <sys/cdefs.h> 98 __KERNEL_RCSID(0, "$NetBSD: osiop.c,v 1.43 2021/08/07 16:19:12 thorpej Exp $"); 99 100 /* #define OSIOP_DEBUG */ 101 102 #include "opt_ddb.h" 103 104 #include <sys/param.h> 105 #include <sys/systm.h> 106 #include <sys/device.h> 107 #include <sys/malloc.h> 108 #include <sys/buf.h> 109 #include <sys/kernel.h> 110 111 #include <dev/scsipi/scsi_all.h> 112 #include <dev/scsipi/scsipi_all.h> 113 #include <dev/scsipi/scsiconf.h> 114 #include <dev/scsipi/scsi_message.h> 115 116 #include <sys/cpu.h> 117 #include <sys/bus.h> 118 119 #include <dev/ic/osiopreg.h> 120 #include <dev/ic/osiopvar.h> 121 122 /* 53C710 script */ 123 #include <dev/microcode/siop/osiop.out> 124 125 static void osiop_minphys(struct buf *); 126 static void osiop_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 127 void *); 128 static void osiop_poll(struct osiop_softc *, struct osiop_acb *); 129 static void osiop_sched(struct osiop_softc *); 130 static void osiop_scsidone(struct osiop_acb *, int); 131 static void osiop_abort(struct osiop_softc *, const char *); 132 static void osiop_init(struct osiop_softc *); 133 static void osiop_reset(struct osiop_softc *); 134 static void osiop_resetbus(struct osiop_softc *); 135 static void osiop_start(struct osiop_softc *); 136 static int osiop_checkintr(struct osiop_softc *, uint8_t, uint8_t, uint8_t, 137 int *); 138 static void osiop_select(struct osiop_softc *); 139 static void osiop_update_xfer_mode(struct osiop_softc *, int); 140 static void scsi_period_to_osiop(struct osiop_softc *, int); 141 static void osiop_timeout(void *); 142 143 int osiop_reset_delay = 250; /* delay after reset, in milliseconds */ 144 145 #ifdef OSIOP_DEBUG 146 #define DEBUG_DMA 0x01 147 #define DEBUG_INT 0x02 148 #define DEBUG_PHASE 0x04 149 #define DEBUG_UNEXCEPT 0x08 150 #define DEBUG_DISC 0x10 151 #define DEBUG_CMD 0x20 152 #define DEBUG_ALL 0xff 153 int osiop_debug = 0; /*DEBUG_ALL;*/ 154 155 int osiopsync_debug = 0; 156 int osiopdma_hits = 1; 157 int osiopstarts = 0; 158 int osiopints = 0; 159 int osiopphmm = 0; 160 int osiop_trix = 0; 161 #define OSIOP_TRACE_SIZE 128 162 #define OSIOP_TRACE(a,b,c,d) do { \ 163 osiop_trbuf[osiop_trix + 0] = (a); \ 164 osiop_trbuf[osiop_trix + 1] = (b); \ 165 osiop_trbuf[osiop_trix + 2] = (c); \ 166 osiop_trbuf[osiop_trix + 3] = (d); \ 167 osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \ 168 } while (0) 169 uint8_t osiop_trbuf[OSIOP_TRACE_SIZE]; 170 void osiop_dump_trace(void); 171 void osiop_dump_acb(struct osiop_acb *); 172 void osiop_dump(struct osiop_softc *); 173 #else 174 #define OSIOP_TRACE(a,b,c,d) 175 #endif 176 177 void 178 osiop_attach(struct osiop_softc *sc) 179 { 180 struct osiop_acb *acb; 181 bus_dma_segment_t seg; 182 int nseg; 183 int i, err; 184 185 /* 186 * Allocate and map DMA-safe memory for the script. 187 */ 188 err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 189 &seg, 1, &nseg, BUS_DMA_NOWAIT); 190 if (err) { 191 aprint_error(": failed to allocate script memory, err=%d\n", 192 err); 193 return; 194 } 195 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE, 196 (void **)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 197 if (err) { 198 aprint_error(": failed to map script memory, err=%d\n", err); 199 return; 200 } 201 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 202 BUS_DMA_NOWAIT, &sc->sc_scrdma); 203 if (err) { 204 aprint_error(": failed to create script map, err=%d\n", err); 205 return; 206 } 207 err = bus_dmamap_load(sc->sc_dmat, sc->sc_scrdma, 208 sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 209 if (err) { 210 aprint_error(": failed to load script map, err=%d\n", err); 211 return; 212 } 213 214 /* 215 * Copy and sync script 216 */ 217 memcpy(sc->sc_script, osiop_script, sizeof(osiop_script)); 218 bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script), 219 BUS_DMASYNC_PREWRITE); 220 221 /* 222 * Allocate and map DMA-safe memory for the script data structure. 223 */ 224 err = bus_dmamem_alloc(sc->sc_dmat, 225 sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0, 226 &seg, 1, &nseg, BUS_DMA_NOWAIT); 227 if (err) { 228 aprint_error(": failed to allocate ds memory, err=%d\n", err); 229 return; 230 } 231 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, 232 sizeof(struct osiop_ds) * OSIOP_NACB, (void **)&sc->sc_ds, 233 BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 234 if (err) { 235 aprint_error(": failed to map ds memory, err=%d\n", err); 236 return; 237 } 238 err = bus_dmamap_create(sc->sc_dmat, 239 sizeof(struct osiop_ds) * OSIOP_NACB, 1, 240 sizeof(struct osiop_ds) * OSIOP_NACB, 0, 241 BUS_DMA_NOWAIT, &sc->sc_dsdma); 242 if (err) { 243 aprint_error(": failed to create ds map, err=%d\n", err); 244 return; 245 } 246 err = bus_dmamap_load(sc->sc_dmat, sc->sc_dsdma, sc->sc_ds, 247 sizeof(struct osiop_ds) * OSIOP_NACB, NULL, BUS_DMA_NOWAIT); 248 if (err) { 249 aprint_error(": failed to load ds map, err=%d\n", err); 250 return; 251 } 252 253 acb = malloc(sizeof(struct osiop_acb) * OSIOP_NACB, 254 M_DEVBUF, M_WAITOK|M_ZERO); 255 sc->sc_acb = acb; 256 sc->sc_cfflags = device_cfdata(sc->sc_dev)->cf_flags; 257 sc->sc_nexus = NULL; 258 sc->sc_active = 0; 259 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 260 261 /* Initialize command block queue */ 262 TAILQ_INIT(&sc->ready_list); 263 TAILQ_INIT(&sc->nexus_list); 264 TAILQ_INIT(&sc->free_list); 265 266 /* Initialize each command block */ 267 for (i = 0; i < OSIOP_NACB; i++) { 268 bus_addr_t dsa; 269 270 err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, 271 OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); 272 if (err) { 273 aprint_error(": failed to create datadma map, err=%d\n", 274 err); 275 return; 276 } 277 278 acb->sc = sc; 279 acb->ds = &sc->sc_ds[i]; 280 acb->dsoffset = sizeof(struct osiop_ds) * i; 281 282 dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; 283 acb->ds->id.addr = dsa + OSIOP_DSIDOFF; 284 acb->ds->cmd.addr = dsa + OSIOP_DSCMDOFF; 285 acb->ds->status.count = 1; 286 acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; 287 acb->ds->msg.count = 1; 288 acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; 289 acb->ds->msgin.count = 1; 290 acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; 291 acb->ds->extmsg.count = 1; 292 acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; 293 acb->ds->synmsg.count = 3; 294 acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; 295 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 296 297 acb++; 298 } 299 300 aprint_normal(": NCR53C710 rev %d, %dMHz, SCSI ID %d\n", 301 osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq, sc->sc_id); 302 303 /* 304 * Initialize all 305 */ 306 osiop_init(sc); 307 308 /* 309 * Fill in the adapter. 310 */ 311 sc->sc_adapter.adapt_dev = sc->sc_dev; 312 sc->sc_adapter.adapt_nchannels = 1; 313 sc->sc_adapter.adapt_openings = OSIOP_NACB; 314 sc->sc_adapter.adapt_max_periph = 1; 315 sc->sc_adapter.adapt_ioctl = NULL; 316 sc->sc_adapter.adapt_minphys = osiop_minphys; 317 sc->sc_adapter.adapt_request = osiop_scsipi_request; 318 319 /* 320 * Fill in the channel. 321 */ 322 sc->sc_channel.chan_adapter = &sc->sc_adapter; 323 sc->sc_channel.chan_bustype = &scsi_bustype; 324 sc->sc_channel.chan_channel = 0; 325 sc->sc_channel.chan_ntargets = OSIOP_NTGT; 326 sc->sc_channel.chan_nluns = 8; 327 sc->sc_channel.chan_id = sc->sc_id; 328 329 /* 330 * Now try to attach all the sub devices. 331 */ 332 config_found(sc->sc_dev, &sc->sc_channel, scsiprint, CFARGS_NONE); 333 } 334 335 /* 336 * default minphys routine for osiop based controllers 337 */ 338 void 339 osiop_minphys(struct buf *bp) 340 { 341 342 if (bp->b_bcount > OSIOP_MAX_XFER) 343 bp->b_bcount = OSIOP_MAX_XFER; 344 minphys(bp); 345 } 346 347 /* 348 * used by specific osiop controller 349 * 350 */ 351 void 352 osiop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 353 void *arg) 354 { 355 struct scsipi_xfer *xs; 356 struct osiop_acb *acb; 357 struct osiop_softc *sc; 358 int err, flags, s; 359 360 sc = device_private(chan->chan_adapter->adapt_dev); 361 362 switch (req) { 363 case ADAPTER_REQ_RUN_XFER: 364 xs = arg; 365 flags = xs->xs_control; 366 367 /* XXXX ?? */ 368 if (flags & XS_CTL_DATA_UIO) 369 panic("osiop: scsi data uio requested"); 370 371 /* XXXX ?? */ 372 if (sc->sc_nexus && flags & XS_CTL_POLL) 373 #if 0 374 panic("osiop_scsicmd: busy"); 375 #else 376 printf("osiop_scsicmd: busy\n"); 377 #endif 378 379 s = splbio(); 380 acb = TAILQ_FIRST(&sc->free_list); 381 if (acb != NULL) { 382 TAILQ_REMOVE(&sc->free_list, acb, chain); 383 } 384 #ifdef DIAGNOSTIC 385 else { 386 scsipi_printaddr(xs->xs_periph); 387 printf("unable to allocate acb\n"); 388 panic("osiop_scsipi_request"); 389 } 390 #endif 391 392 acb->status = ACB_S_READY; 393 acb->xs = xs; 394 395 /* Setup DMA map for data buffer */ 396 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 397 err = bus_dmamap_load(sc->sc_dmat, acb->datadma, 398 xs->data, xs->datalen, NULL, 399 BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 400 ((xs->xs_control & XS_CTL_DATA_IN) ? 401 BUS_DMA_READ : BUS_DMA_WRITE)); 402 if (err) { 403 printf("%s: unable to load data DMA map: %d\n", 404 device_xname(sc->sc_dev), err); 405 xs->error = XS_DRIVER_STUFFUP; 406 scsipi_done(xs); 407 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 408 splx(s); 409 return; 410 } 411 } 412 413 acb->cmdlen = xs->cmdlen; 414 acb->datalen = xs->datalen; 415 #ifdef OSIOP_DEBUG 416 acb->data = xs->data; 417 #endif 418 419 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 420 421 if (sc->sc_nexus == NULL) 422 osiop_sched(sc); 423 424 splx(s); 425 426 if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) 427 osiop_poll(sc, acb); 428 return; 429 430 case ADAPTER_REQ_GROW_RESOURCES: 431 return; 432 433 case ADAPTER_REQ_SET_XFER_MODE: 434 { 435 struct osiop_tinfo *ti; 436 struct scsipi_xfer_mode *xm = arg; 437 438 ti = &sc->sc_tinfo[xm->xm_target]; 439 440 if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 441 (ti->flags & TI_NOSYNC) == 0) 442 ti->state = NEG_INIT; 443 444 /* 445 * If we're not going to negotiate, send the 446 * notification now, since it won't happen later. 447 */ 448 if (ti->state == NEG_DONE) 449 osiop_update_xfer_mode(sc, xm->xm_target); 450 451 return; 452 } 453 } 454 } 455 456 void 457 osiop_poll(struct osiop_softc *sc, struct osiop_acb *acb) 458 { 459 struct scsipi_xfer *xs = acb->xs; 460 int status, i, s, to; 461 uint8_t istat, dstat, sstat0; 462 463 s = splbio(); 464 to = xs->timeout / 1000; 465 if (!TAILQ_EMPTY(&sc->nexus_list)) 466 printf("%s: osiop_poll called with disconnected device\n", 467 device_xname(sc->sc_dev)); 468 for (;;) { 469 i = 1000; 470 while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & 471 (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 472 if (i <= 0) { 473 #ifdef OSIOP_DEBUG 474 printf("waiting: tgt %d cmd %02x sbcl %02x" 475 " dsp %x (+%lx) dcmd %x" 476 " ds %p timeout %d\n", 477 xs->xs_periph->periph_target, 478 xs->cmd->opcode, 479 osiop_read_1(sc, OSIOP_SBCL), 480 osiop_read_4(sc, OSIOP_DSP), 481 osiop_read_4(sc, OSIOP_DSP) - 482 sc->sc_scrdma->dm_segs[0].ds_addr, 483 osiop_read_1(sc, OSIOP_DCMD), 484 acb->ds, acb->xs->timeout); 485 #endif 486 i = 1000; 487 to--; 488 if (to <= 0) { 489 osiop_reset(sc); 490 splx(s); 491 return; 492 } 493 } 494 delay(1000); 495 i--; 496 } 497 sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 498 delay(25); 499 dstat = osiop_read_1(sc, OSIOP_DSTAT); 500 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 501 if (acb != sc->sc_nexus) 502 printf("%s: osiop_poll disconnected device" 503 " completed\n", device_xname(sc->sc_dev)); 504 else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 505 sc->sc_flags &= ~OSIOP_INTSOFF; 506 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 507 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 508 } 509 osiop_scsidone(sc->sc_nexus, status); 510 } 511 512 if (xs->xs_status & XS_STS_DONE) 513 break; 514 } 515 516 splx(s); 517 return; 518 } 519 520 /* 521 * start next command that's ready 522 */ 523 void 524 osiop_sched(struct osiop_softc *sc) 525 { 526 struct scsipi_periph *periph; 527 struct osiop_acb *acb; 528 int i; 529 530 #ifdef OSIOP_DEBUG 531 if (sc->sc_nexus != NULL) { 532 printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n", 533 device_xname(sc->sc_dev), sc->sc_nexus, 534 sc->sc_nexus->xs->xs_periph->periph_target, 535 TAILQ_FIRST(&sc->ready_list), 536 TAILQ_FIRST(&sc->ready_list)->xs->xs_periph->periph_target); 537 return; 538 } 539 #endif 540 TAILQ_FOREACH(acb, &sc->ready_list, chain) { 541 periph = acb->xs->xs_periph; 542 i = periph->periph_target; 543 if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) { 544 struct osiop_tinfo *ti; 545 546 TAILQ_REMOVE(&sc->ready_list, acb, chain); 547 sc->sc_nexus = acb; 548 ti = &sc->sc_tinfo[i]; 549 ti->lubusy |= (1 << periph->periph_lun); 550 break; 551 } 552 } 553 554 if (acb == NULL) { 555 #ifdef OSIOP_DEBUG 556 printf("%s: osiop_sched didn't find ready command\n", 557 device_xname(sc->sc_dev)); 558 #endif 559 return; 560 } 561 562 if (acb->xs->xs_control & XS_CTL_RESET) 563 osiop_reset(sc); 564 565 sc->sc_active++; 566 osiop_select(sc); 567 } 568 569 void 570 osiop_scsidone(struct osiop_acb *acb, int status) 571 { 572 struct scsipi_xfer *xs; 573 struct scsipi_periph *periph; 574 struct osiop_softc *sc; 575 int dosched = 0; 576 577 #ifdef DIAGNOSTIC 578 if (acb == NULL || acb->xs == NULL) { 579 printf("osiop_scsidone: NULL acb or scsipi_xfer\n"); 580 #if defined(OSIOP_DEBUG) && defined(DDB) 581 Debugger(); 582 #endif 583 return; 584 } 585 #endif 586 xs = acb->xs; 587 sc = acb->sc; 588 periph = xs->xs_periph; 589 590 #ifdef OSIOP_DEBUG 591 if (acb->status != ACB_S_DONE) 592 printf("%s: acb not done (status %d)\n", 593 device_xname(sc->sc_dev), acb->status); 594 #endif 595 596 xs->status = status; 597 598 switch (status) { 599 case SCSI_OK: 600 xs->error = XS_NOERROR; 601 break; 602 case SCSI_BUSY: 603 xs->error = XS_BUSY; 604 break; 605 case SCSI_CHECK: 606 xs->error = XS_BUSY; 607 break; 608 case SCSI_OSIOP_NOCHECK: 609 /* 610 * don't check status, xs->error is already valid 611 */ 612 break; 613 case SCSI_OSIOP_NOSTATUS: 614 /* 615 * the status byte was not updated, cmd was 616 * aborted 617 */ 618 xs->error = XS_SELTIMEOUT; 619 break; 620 default: 621 #ifdef OSIOP_DEBUG 622 printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", 623 device_xname(sc->sc_dev), status); 624 #endif 625 xs->error = XS_DRIVER_STUFFUP; 626 break; 627 } 628 629 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 630 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, 631 (xs->xs_control & XS_CTL_DATA_IN) ? 632 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 633 bus_dmamap_unload(sc->sc_dmat, acb->datadma); 634 } 635 636 /* 637 * Remove the ACB from whatever queue it's on. We have to do a bit of 638 * a hack to figure out which queue it's on. Note that it is *not* 639 * necessary to cdr down the ready queue, but we must cdr down the 640 * nexus queue and see if it's there, so we can mark the unit as no 641 * longer busy. This code is sickening, but it works. 642 */ 643 if (acb == sc->sc_nexus) { 644 sc->sc_nexus = NULL; 645 sc->sc_tinfo[periph->periph_target].lubusy &= 646 ~(1 << periph->periph_lun); 647 if (!TAILQ_EMPTY(&sc->ready_list)) 648 dosched = 1; /* start next command */ 649 sc->sc_active--; 650 OSIOP_TRACE('d', 'a', status, 0); 651 } else if (sc->ready_list.tqh_last == &TAILQ_NEXT(acb, chain)) { 652 TAILQ_REMOVE(&sc->ready_list, acb, chain); 653 OSIOP_TRACE('d', 'r', status, 0); 654 } else { 655 struct osiop_acb *acb2; 656 TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { 657 if (acb2 == acb) { 658 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 659 sc->sc_tinfo[periph->periph_target].lubusy &= 660 ~(1 << periph->periph_lun); 661 sc->sc_active--; 662 break; 663 } 664 } 665 if (acb2 == NULL) { 666 if (TAILQ_NEXT(acb, chain) != NULL) { 667 TAILQ_REMOVE(&sc->ready_list, acb, chain); 668 sc->sc_active--; 669 } else { 670 printf("%s: can't find matching acb\n", 671 device_xname(sc->sc_dev)); 672 #ifdef DDB 673 #if 0 674 Debugger(); 675 #endif 676 #endif 677 } 678 } 679 OSIOP_TRACE('d', 'n', status, 0); 680 } 681 /* Put it on the free list. */ 682 acb->status = ACB_S_FREE; 683 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 684 sc->sc_tinfo[periph->periph_target].cmds++; 685 686 callout_stop(&xs->xs_callout); 687 xs->resid = 0; 688 scsipi_done(xs); 689 690 if (dosched && sc->sc_nexus == NULL) 691 osiop_sched(sc); 692 } 693 694 void 695 osiop_abort(struct osiop_softc *sc, const char *where) 696 { 697 698 printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 699 device_xname(sc->sc_dev), where, 700 osiop_read_1(sc, OSIOP_DSTAT), 701 osiop_read_1(sc, OSIOP_SSTAT0), 702 osiop_read_1(sc, OSIOP_SBCL)); 703 704 /* XXX XXX XXX */ 705 if (sc->sc_active > 0) { 706 sc->sc_active = 0; 707 } 708 } 709 710 void 711 osiop_init(struct osiop_softc *sc) 712 { 713 int i, inhibit_sync, inhibit_disc; 714 715 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 716 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 717 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 718 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 719 720 if (sc->sc_minsync < 25) 721 sc->sc_minsync = 25; 722 723 if (sc->sc_clock_freq <= 25) { 724 sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ 725 sc->sc_tcp[0] = sc->sc_tcp[1]; 726 } else if (sc->sc_clock_freq <= 37) { 727 sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ 728 sc->sc_tcp[0] = sc->sc_tcp[2]; 729 } else if (sc->sc_clock_freq <= 50) { 730 sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ 731 sc->sc_tcp[0] = sc->sc_tcp[3]; 732 } else { 733 sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ 734 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 735 } 736 737 if ((sc->sc_cfflags & 0x10000) != 0) { 738 sc->sc_flags |= OSIOP_NODMA; 739 #ifdef OSIOP_DEBUG 740 printf("%s: DMA disabled; use polling\n", 741 device_xname(sc->sc_dev)); 742 #endif 743 } 744 745 inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ 746 inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ 747 #ifdef OSIOP_DEBUG 748 if (inhibit_sync != 0) 749 printf("%s: Inhibiting synchronous transfer: 0x%02x\n", 750 device_xname(sc->sc_dev), inhibit_sync); 751 if (inhibit_disc != 0) 752 printf("%s: Inhibiting disconnect: 0x%02x\n", 753 device_xname(sc->sc_dev), inhibit_disc); 754 #endif 755 for (i = 0; i < OSIOP_NTGT; i++) { 756 if (inhibit_sync & (1 << i)) 757 sc->sc_tinfo[i].flags |= TI_NOSYNC; 758 if (inhibit_disc & (1 << i)) 759 sc->sc_tinfo[i].flags |= TI_NODISC; 760 } 761 762 osiop_resetbus(sc); 763 osiop_reset(sc); 764 } 765 766 void 767 osiop_reset(struct osiop_softc *sc) 768 { 769 struct osiop_acb *acb; 770 int i, s; 771 uint8_t stat; 772 773 #ifdef OSIOP_DEBUG 774 printf("%s: resetting chip\n", device_xname(sc->sc_dev)); 775 #endif 776 if (sc->sc_flags & OSIOP_ALIVE) 777 osiop_abort(sc, "reset"); 778 779 s = splbio(); 780 781 /* 782 * Reset the chip 783 * XXX - is this really needed? 784 */ 785 786 /* abort current script */ 787 osiop_write_1(sc, OSIOP_ISTAT, 788 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); 789 /* reset chip */ 790 osiop_write_1(sc, OSIOP_ISTAT, 791 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); 792 delay(100); 793 osiop_write_1(sc, OSIOP_ISTAT, 794 osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); 795 delay(100); 796 797 /* 798 * Set up various chip parameters 799 */ 800 osiop_write_1(sc, OSIOP_SCNTL0, 801 OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); 802 osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); 803 osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); 804 osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4); 805 /* don't enable interrupts yet */ 806 osiop_write_1(sc, OSIOP_SIEN, 0x00); 807 osiop_write_1(sc, OSIOP_DIEN, 0x00); 808 osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); 809 osiop_write_1(sc, OSIOP_DWT, 0x00); 810 osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) 811 | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); 812 osiop_write_1(sc, OSIOP_CTEST7, 813 osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); 814 osiop_write_1(sc, OSIOP_CTEST4, 815 osiop_read_1(sc, OSIOP_CTEST4) | sc->sc_ctest4); 816 817 /* will need to re-negotiate sync xfers */ 818 for (i = 0; i < OSIOP_NTGT; i++) { 819 sc->sc_tinfo[i].state = NEG_INIT; 820 sc->sc_tinfo[i].period = 0; 821 sc->sc_tinfo[i].offset = 0; 822 } 823 824 stat = osiop_read_1(sc, OSIOP_ISTAT); 825 if (stat & OSIOP_ISTAT_SIP) 826 osiop_read_1(sc, OSIOP_SSTAT0); 827 delay(25); 828 if (stat & OSIOP_ISTAT_DIP) 829 osiop_read_1(sc, OSIOP_DSTAT); 830 831 splx(s); 832 833 delay(osiop_reset_delay * 1000); 834 835 if (sc->sc_nexus != NULL) { 836 sc->sc_nexus->xs->error = 837 (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? 838 XS_TIMEOUT : XS_RESET; 839 sc->sc_nexus->status = ACB_S_DONE; 840 sc->sc_nexus->flags = 0; 841 osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); 842 } 843 while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 844 acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? 845 XS_TIMEOUT : XS_RESET; 846 acb->status = ACB_S_DONE; 847 acb->flags = 0; 848 osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); 849 } 850 851 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 852 /* enable SCSI and DMA interrupts */ 853 sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ 854 OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; 855 sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | 856 /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; 857 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 858 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 859 } 860 861 void 862 osiop_resetbus(struct osiop_softc *sc) 863 { 864 865 osiop_write_1(sc, OSIOP_SIEN, 0); 866 osiop_write_1(sc, OSIOP_SCNTL1, 867 osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); 868 delay(25); 869 osiop_write_1(sc, OSIOP_SCNTL1, 870 osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); 871 } 872 873 /* 874 * Setup Data Storage for 53C710 and start SCRIPTS processing 875 */ 876 877 void 878 osiop_start(struct osiop_softc *sc) 879 { 880 struct osiop_acb *acb = sc->sc_nexus; 881 struct osiop_ds *ds = acb->ds; 882 struct scsipi_xfer *xs = acb->xs; 883 bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; 884 struct osiop_tinfo *ti; 885 int target = xs->xs_periph->periph_target; 886 int lun = xs->xs_periph->periph_lun; 887 int disconnect, i; 888 889 #ifdef OSIOP_DEBUG 890 if (osiop_debug & DEBUG_DISC && 891 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 892 printf("ACK! osiop was busy: script %p dsa %p active %d\n", 893 sc->sc_script, acb->ds, sc->sc_active); 894 printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 895 osiop_read_1(sc, OSIOP_ISTAT), 896 osiop_read_1(sc, OSIOP_SFBR), 897 osiop_read_1(sc, OSIOP_LCRC), 898 osiop_read_1(sc, OSIOP_SIEN), 899 osiop_read_1(sc, OSIOP_DIEN)); 900 #ifdef DDB 901 #if 0 902 Debugger(); 903 #endif 904 #endif 905 } 906 #endif 907 908 #ifdef OSIOP_DEBUG 909 if (acb->status != ACB_S_READY) 910 panic("osiop_start: non-ready cmd in acb"); 911 #endif 912 913 acb->intstat = 0; 914 915 /* Copy SCSI command to DMA buffer */ 916 memcpy(ds->scsipi_cmd, xs->cmd, acb->cmdlen); 917 ds->cmd.count = acb->cmdlen; 918 919 ti = &sc->sc_tinfo[target]; 920 ds->scsi_addr = ((1 << 16) << target) | (ti->sxfer << 8); 921 922 disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 && 923 (ti->flags & TI_NODISC) == 0; 924 925 ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); 926 ds->id.count = 1; 927 ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ 928 ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; 929 memset(&ds->data, 0, sizeof(ds->data)); 930 931 /* 932 * Negotiate wide is the initial negotiation state; since the 53c710 933 * doesn't do wide transfers, just begin the synchronous transfer 934 * negotiation here. 935 */ 936 if (ti->state == NEG_INIT) { 937 if ((ti->flags & TI_NOSYNC) != 0) { 938 ti->state = NEG_DONE; 939 ti->sbcl = 0; 940 ti->sxfer = 0; 941 ti->period = 0; 942 ti->offset = 0; 943 osiop_update_xfer_mode(sc, target); 944 #ifdef OSIOP_DEBUG 945 if (osiopsync_debug) 946 printf("Forcing target %d asynchronous\n", 947 target); 948 #endif 949 } else { 950 ds->msgbuf[2] = MSG_INVALID; 951 ds->msgout[1] = MSG_EXTENDED; 952 ds->msgout[2] = MSG_EXT_SDTR_LEN; 953 ds->msgout[3] = MSG_EXT_SDTR; 954 ds->msgout[4] = sc->sc_minsync; 955 ds->msgout[5] = OSIOP_MAX_OFFSET; 956 ds->id.count = MSG_EXT_SDTR_LEN + 3; 957 ti->state = NEG_WAITS; 958 #ifdef OSIOP_DEBUG 959 if (osiopsync_debug) 960 printf("Sending sync request to target %d\n", 961 target); 962 #endif 963 } 964 } 965 966 acb->curaddr = 0; 967 acb->curlen = 0; 968 969 /* 970 * Build physical DMA addresses for scatter/gather I/O 971 */ 972 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 973 for (i = 0; i < datadma->dm_nsegs; i++) { 974 ds->data[i].count = datadma->dm_segs[i].ds_len; 975 ds->data[i].addr = datadma->dm_segs[i].ds_addr; 976 } 977 /* sync xfer data buffer */ 978 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 979 0, acb->datalen, (xs->xs_control & XS_CTL_DATA_IN) ? 980 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 981 } 982 983 /* sync script data structure */ 984 bus_dmamap_sync(sc->sc_dmat, dsdma, 985 acb->dsoffset, sizeof(struct osiop_ds), 986 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 987 988 acb->status = ACB_S_ACTIVE; 989 990 /* handle timeout */ 991 if ((xs->xs_control & XS_CTL_POLL) == 0) { 992 int timeout = mstohz(acb->xs->timeout); 993 /* start expire timer */ 994 if (timeout == 0) 995 timeout = 1; 996 callout_reset(&xs->xs_callout, timeout, 997 osiop_timeout, acb); 998 } 999 #ifdef OSIOP_DEBUG 1000 if (osiop_debug & DEBUG_DISC && 1001 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1002 printf("ACK! osiop was busy at start: " 1003 "script %p dsa %p active %d\n", 1004 sc->sc_script, acb->ds, sc->sc_active); 1005 #ifdef DDB 1006 #if 0 1007 Debugger(); 1008 #endif 1009 #endif 1010 } 1011 #endif 1012 if (TAILQ_EMPTY(&sc->nexus_list)) { 1013 if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) 1014 printf("%s: osiop_select while connected?\n", 1015 device_xname(sc->sc_dev)); 1016 osiop_write_4(sc, OSIOP_TEMP, 0); 1017 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1018 osiop_write_4(sc, OSIOP_DSA, 1019 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1020 osiop_write_4(sc, OSIOP_DSP, 1021 sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); 1022 OSIOP_TRACE('s', 1, 0, 0); 1023 } else { 1024 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1025 osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); 1026 OSIOP_TRACE('s', 2, 0, 0); 1027 } else { 1028 OSIOP_TRACE('s', 3, 1029 osiop_read_1(sc, OSIOP_ISTAT), 0); 1030 } 1031 } 1032 #ifdef OSIOP_DEBUG 1033 osiopstarts++; 1034 #endif 1035 } 1036 1037 /* 1038 * Process a DMA or SCSI interrupt from the 53C710 SIOP 1039 */ 1040 1041 int 1042 osiop_checkintr(struct osiop_softc *sc, uint8_t istat, uint8_t dstat, 1043 uint8_t sstat0, int *status) 1044 { 1045 struct osiop_acb *acb = sc->sc_nexus; 1046 struct osiop_ds *ds = NULL; /* XXX */ 1047 bus_dmamap_t dsdma = sc->sc_dsdma; 1048 bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; 1049 int target = 0; 1050 int dfifo, dbc, intcode, sstat1; 1051 1052 dfifo = osiop_read_1(sc, OSIOP_DFIFO); 1053 dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; 1054 sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); 1055 osiop_write_1(sc, OSIOP_CTEST8, 1056 osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); 1057 while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != 1058 OSIOP_CTEST1_FMT) 1059 ; 1060 osiop_write_1(sc, OSIOP_CTEST8, 1061 osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); 1062 intcode = osiop_read_4(sc, OSIOP_DSPS); 1063 #ifdef OSIOP_DEBUG 1064 osiopints++; 1065 if (osiop_read_4(sc, OSIOP_DSP) != 0 && 1066 (osiop_read_4(sc, OSIOP_DSP) < scraddr || 1067 osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { 1068 printf("%s: dsp not within script dsp %x scripts %lx:%lx", 1069 device_xname(sc->sc_dev), 1070 osiop_read_4(sc, OSIOP_DSP), 1071 scraddr, scraddr + sizeof(osiop_script)); 1072 printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); 1073 #ifdef DDB 1074 Debugger(); 1075 #endif 1076 } 1077 #endif 1078 OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? 1079 intcode & 0xff : sstat0); 1080 1081 if (acb != NULL) { /* XXX */ 1082 ds = acb->ds; 1083 bus_dmamap_sync(sc->sc_dmat, dsdma, 1084 acb->dsoffset, sizeof(struct osiop_ds), 1085 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1086 #ifdef OSIOP_DEBUG 1087 if (acb->status != ACB_S_ACTIVE) 1088 printf("osiop_checkintr: acb not active (status %d)\n", 1089 acb->status); 1090 #endif 1091 } 1092 1093 1094 if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { 1095 /* Normal completion status, or check condition */ 1096 struct osiop_tinfo *ti; 1097 1098 if (acb == NULL) { 1099 printf("%s: COMPLETE with no active command?\n", 1100 device_xname(sc->sc_dev)); 1101 goto bad_phase; 1102 } 1103 #ifdef OSIOP_DEBUG 1104 if (osiop_read_4(sc, OSIOP_DSA) != 1105 dsdma->dm_segs[0].ds_addr + acb->dsoffset) { 1106 printf("osiop: invalid dsa: %x %lx\n", 1107 osiop_read_4(sc, OSIOP_DSA), 1108 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1109 panic("*** osiop DSA invalid ***"); 1110 } 1111 #endif 1112 target = acb->xs->xs_periph->periph_target; 1113 ti = &sc->sc_tinfo[target]; 1114 if (ti->state == NEG_WAITS) { 1115 if (ds->msgbuf[1] == MSG_INVALID) 1116 printf("%s: target %d ignored sync request\n", 1117 device_xname(sc->sc_dev), target); 1118 else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) 1119 printf("%s: target %d rejected sync request\n", 1120 device_xname(sc->sc_dev), target); 1121 ti->period = 0; 1122 ti->offset = 0; 1123 osiop_update_xfer_mode(sc, target); 1124 ti->state = NEG_DONE; 1125 } 1126 #ifdef OSIOP_DEBUG 1127 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1128 #if 0 1129 printf("ACK! osiop was busy at end: " 1130 "script %p dsa %p\n", &osiop_script, ds); 1131 #ifdef DDB 1132 Debugger(); 1133 #endif 1134 #endif 1135 } 1136 if (ds->msgbuf[0] != MSG_CMDCOMPLETE) 1137 printf("%s: message was not COMMAND COMPLETE: %02x\n", 1138 device_xname(sc->sc_dev), ds->msgbuf[0]); 1139 #endif 1140 if (!TAILQ_EMPTY(&sc->nexus_list)) 1141 osiop_write_1(sc, OSIOP_DCNTL, 1142 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1143 *status = ds->stat[0]; 1144 acb->status = ACB_S_DONE; 1145 return (1); 1146 } 1147 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { 1148 if (acb == NULL) { 1149 printf("%s: sync message with no active command?\n", 1150 device_xname(sc->sc_dev)); 1151 goto bad_phase; 1152 } 1153 target = acb->xs->xs_periph->periph_target; 1154 if (ds->msgbuf[1] == MSG_EXTENDED && 1155 ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1156 ds->msgbuf[3] == MSG_EXT_SDTR) { 1157 struct osiop_tinfo *ti = &sc->sc_tinfo[target]; 1158 #ifdef OSIOP_DEBUG 1159 if (osiopsync_debug) 1160 printf("sync msg in: " 1161 "%02x %02x %02x %02x %02x %02x\n", 1162 ds->msgbuf[0], ds->msgbuf[1], 1163 ds->msgbuf[2], ds->msgbuf[3], 1164 ds->msgbuf[4], ds->msgbuf[5]); 1165 #endif 1166 ti->period = ds->msgbuf[4]; 1167 ti->offset = ds->msgbuf[5]; 1168 ti->sxfer = 0; 1169 ti->sbcl = 0; 1170 if (ds->msgbuf[5] != 0) 1171 scsi_period_to_osiop(sc, target); 1172 osiop_update_xfer_mode(sc, target); 1173 1174 bus_dmamap_sync(sc->sc_dmat, dsdma, 1175 acb->dsoffset, sizeof(struct osiop_ds), 1176 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1177 osiop_write_1(sc, OSIOP_SXFER, ti->sxfer); 1178 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1179 if (ti->state == NEG_WAITS) { 1180 ti->state = NEG_DONE; 1181 osiop_write_4(sc, OSIOP_DSP, 1182 scraddr + Ent_clear_ack); 1183 return (0); 1184 } 1185 osiop_write_1(sc, OSIOP_DCNTL, 1186 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1187 ti->state = NEG_DONE; 1188 return (0); 1189 } 1190 /* XXX - not SDTR message */ 1191 } 1192 if (sstat0 & OSIOP_SSTAT0_M_A) { 1193 /* Phase mismatch */ 1194 #ifdef OSIOP_DEBUG 1195 osiopphmm++; 1196 #endif 1197 if (acb == NULL) { 1198 printf("%s: Phase mismatch with no active command?\n", 1199 device_xname(sc->sc_dev)); 1200 goto bad_phase; 1201 } 1202 if (acb->datalen > 0) { 1203 int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; 1204 if (sstat1 & OSIOP_SSTAT1_ORF) 1205 adjust++; 1206 if (sstat1 & OSIOP_SSTAT1_OLF) 1207 adjust++; 1208 acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; 1209 acb->curlen = dbc + adjust; 1210 #ifdef OSIOP_DEBUG 1211 if (osiop_debug & DEBUG_DISC) { 1212 printf("Phase mismatch: curaddr %lx " 1213 "curlen %lx dfifo %x dbc %x sstat1 %x " 1214 "adjust %x sbcl %x starts %d acb %p\n", 1215 acb->curaddr, acb->curlen, dfifo, 1216 dbc, sstat1, adjust, 1217 osiop_read_1(sc, OSIOP_SBCL), 1218 osiopstarts, acb); 1219 if (ds->data[1].count != 0) { 1220 int i; 1221 for (i = 0; ds->data[i].count != 0; i++) 1222 printf("chain[%d] " 1223 "addr %x len %x\n", i, 1224 ds->data[i].addr, 1225 ds->data[i].count); 1226 } 1227 bus_dmamap_sync(sc->sc_dmat, dsdma, 1228 acb->dsoffset, sizeof(struct osiop_ds), 1229 BUS_DMASYNC_PREREAD | 1230 BUS_DMASYNC_PREWRITE); 1231 } 1232 #endif 1233 } 1234 #ifdef OSIOP_DEBUG 1235 OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), 1236 osiop_read_4(sc, OSIOP_DSP) >> 8, 1237 osiop_read_4(sc, OSIOP_DSP)); 1238 if (osiop_debug & DEBUG_PHASE) 1239 printf("Phase mismatch: %x dsp +%lx dcmd %x\n", 1240 osiop_read_1(sc, OSIOP_SBCL), 1241 osiop_read_4(sc, OSIOP_DSP) - scraddr, 1242 osiop_read_4(sc, OSIOP_DBC)); 1243 #endif 1244 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { 1245 printf("Phase mismatch: " 1246 "REQ not asserted! %02x dsp %x\n", 1247 osiop_read_1(sc, OSIOP_SBCL), 1248 osiop_read_4(sc, OSIOP_DSP)); 1249 #if defined(OSIOP_DEBUG) && defined(DDB) 1250 /*Debugger(); XXX is*/ 1251 #endif 1252 } 1253 switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { 1254 case DATA_OUT_PHASE: 1255 case DATA_IN_PHASE: 1256 case STATUS_PHASE: 1257 case COMMAND_PHASE: 1258 case MSG_IN_PHASE: 1259 case MSG_OUT_PHASE: 1260 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1261 break; 1262 default: 1263 printf("%s: invalid phase\n", device_xname(sc->sc_dev)); 1264 goto bad_phase; 1265 } 1266 return (0); 1267 } 1268 if (sstat0 & OSIOP_SSTAT0_STO) { 1269 /* Select timed out */ 1270 if (acb == NULL) { 1271 printf("%s: Select timeout with no active command?\n", 1272 device_xname(sc->sc_dev)); 1273 goto bad_phase; 1274 } 1275 #ifdef OSIOP_DEBUG 1276 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1277 printf("ACK! osiop was busy at timeout: " 1278 "script %p dsa %lx\n", sc->sc_script, 1279 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1280 printf(" sbcl %x sdid %x " 1281 "istat %x dstat %x sstat0 %x\n", 1282 osiop_read_1(sc, OSIOP_SBCL), 1283 osiop_read_1(sc, OSIOP_SDID), 1284 istat, dstat, sstat0); 1285 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { 1286 printf("Yikes, it's not busy now!\n"); 1287 #if 0 1288 *status = SCSI_OSIOP_NOSTATUS; 1289 if (!TAILQ_EMPTY(&sc->nexus_list)) 1290 osiop_write_4(sc, OSIOP_DSP, 1291 scraddr + Ent_wait_reselect); 1292 return (1); 1293 #endif 1294 } 1295 #if 0 1296 osiop_write_1(sc, OSIOP_DCNTL, 1297 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1298 #endif 1299 #ifdef DDB 1300 Debugger(); 1301 #endif 1302 return (0); 1303 } 1304 #endif 1305 acb->status = ACB_S_DONE; 1306 *status = SCSI_OSIOP_NOSTATUS; 1307 acb->xs->error = XS_SELTIMEOUT; 1308 if (!TAILQ_EMPTY(&sc->nexus_list)) 1309 osiop_write_4(sc, OSIOP_DSP, 1310 scraddr + Ent_wait_reselect); 1311 return (1); 1312 } 1313 if (acb != NULL) 1314 target = acb->xs->xs_periph->periph_target; 1315 else 1316 target = sc->sc_id; 1317 if (sstat0 & OSIOP_SSTAT0_UDC) { 1318 printf("%s: target %d disconnected unexpectedly", 1319 device_xname(sc->sc_dev), target); 1320 if (acb == NULL) 1321 printf("with no active command?"); 1322 printf("\n"); 1323 #if 0 1324 osiop_abort(sc, "osiop_chkintr"); 1325 #endif 1326 *status = SCSI_CHECK; 1327 if (!TAILQ_EMPTY(&sc->nexus_list)) 1328 osiop_write_4(sc, OSIOP_DSP, 1329 scraddr + Ent_wait_reselect); 1330 return (acb != NULL); 1331 } 1332 if (dstat & OSIOP_DSTAT_SIR && 1333 (intcode == A_int_disc || intcode == A_int_disc_wodp)) { 1334 /* Disconnect */ 1335 if (acb == NULL) { 1336 printf("%s: Disconnect with no active command?\n", 1337 device_xname(sc->sc_dev)); 1338 return (0); 1339 } 1340 #ifdef OSIOP_DEBUG 1341 if (osiop_debug & DEBUG_DISC) { 1342 printf("%s: ID %02x disconnected TEMP %x (+%lx) " 1343 "curaddr %lx curlen %lx buf %x len %x dfifo %x " 1344 "dbc %x sstat1 %x starts %d acb %p\n", 1345 device_xname(sc->sc_dev), 1 << target, 1346 osiop_read_4(sc, OSIOP_TEMP), 1347 (osiop_read_4(sc, OSIOP_TEMP) != 0) ? 1348 osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, 1349 acb->curaddr, acb->curlen, 1350 ds->data[0].addr, ds->data[0].count, 1351 dfifo, dbc, sstat1, osiopstarts, acb); 1352 bus_dmamap_sync(sc->sc_dmat, dsdma, 1353 acb->dsoffset, sizeof(struct osiop_ds), 1354 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1355 } 1356 #endif 1357 /* 1358 * XXXX need to update curaddr/curlen to reflect 1359 * current data transferred. If device disconnected in 1360 * the middle of a DMA block, they should already be set 1361 * by the phase change interrupt. If the disconnect 1362 * occurs on a DMA block boundary, we have to figure out 1363 * which DMA block it was. 1364 */ 1365 if (acb->datalen > 0 && 1366 osiop_read_4(sc, OSIOP_TEMP) != 0) { 1367 long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; 1368 1369 if (acb->curlen != 0 && 1370 acb->curlen != ds->data[0].count) 1371 printf("%s: curaddr/curlen already set? " 1372 "n %lx iob %lx/%lx chain[0] %x/%x\n", 1373 device_xname(sc->sc_dev), n, 1374 acb->curaddr, acb->curlen, 1375 ds->data[0].addr, ds->data[0].count); 1376 if (n < Ent_datain) 1377 n = (n - Ent_dataout) / 16; 1378 else 1379 n = (n - Ent_datain) / 16; 1380 if (n < 0 || n >= OSIOP_NSG) 1381 printf("TEMP invalid %ld\n", n); 1382 else { 1383 acb->curaddr = ds->data[n].addr; 1384 acb->curlen = ds->data[n].count; 1385 } 1386 #ifdef OSIOP_DEBUG 1387 if (osiop_debug & DEBUG_DISC) { 1388 printf("%s: TEMP offset %ld", 1389 device_xname(sc->sc_dev), n); 1390 printf(" curaddr %lx curlen %lx\n", 1391 acb->curaddr, acb->curlen); 1392 } 1393 #endif 1394 } 1395 /* 1396 * If data transfer was interrupted by disconnect, curaddr 1397 * and curlen should reflect the point of interruption. 1398 * Adjust the DMA chain so that the data transfer begins 1399 * at the appropriate place upon reselection. 1400 * XXX This should only be done on save data pointer message? 1401 */ 1402 if (acb->curlen > 0) { 1403 int i, j; 1404 1405 #ifdef OSIOP_DEBUG 1406 if (osiop_debug & DEBUG_DISC) 1407 printf("%s: adjusting DMA chain\n", 1408 device_xname(sc->sc_dev)); 1409 if (intcode == A_int_disc_wodp) 1410 printf("%s: ID %02x disconnected " 1411 "without Save Data Pointers\n", 1412 device_xname(sc->sc_dev), 1 << target); 1413 #endif 1414 for (i = 0; i < OSIOP_NSG; i++) { 1415 if (ds->data[i].count == 0) 1416 break; 1417 if (acb->curaddr >= ds->data[i].addr && 1418 acb->curaddr < 1419 (ds->data[i].addr + ds->data[i].count)) 1420 break; 1421 } 1422 if (i >= OSIOP_NSG || ds->data[i].count == 0) { 1423 printf("couldn't find saved data pointer: " 1424 "curaddr %lx curlen %lx i %d\n", 1425 acb->curaddr, acb->curlen, i); 1426 #ifdef DDB 1427 Debugger(); 1428 #endif 1429 } 1430 #ifdef OSIOP_DEBUG 1431 if (osiop_debug & DEBUG_DISC) 1432 printf(" chain[0]: %x/%x -> %lx/%lx\n", 1433 ds->data[0].addr, ds->data[0].count, 1434 acb->curaddr, acb->curlen); 1435 #endif 1436 ds->data[0].addr = acb->curaddr; 1437 ds->data[0].count = acb->curlen; 1438 for (j = 1, i = i + 1; 1439 i < OSIOP_NSG && ds->data[i].count > 0; 1440 i++, j++) { 1441 #ifdef OSIOP_DEBUG 1442 if (osiop_debug & DEBUG_DISC) 1443 printf(" chain[%d]: %x/%x -> %x/%x\n", 1444 j, ds->data[j].addr, 1445 ds->data[j].count, 1446 ds->data[i].addr, 1447 ds->data[i].count); 1448 #endif 1449 ds->data[j].addr = ds->data[i].addr; 1450 ds->data[j].count = ds->data[i].count; 1451 } 1452 if (j < OSIOP_NSG) { 1453 ds->data[j].addr = 0; 1454 ds->data[j].count = 0; 1455 } 1456 bus_dmamap_sync(sc->sc_dmat, dsdma, 1457 acb->dsoffset, sizeof(struct osiop_ds), 1458 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1459 } 1460 sc->sc_tinfo[target].dconns++; 1461 /* 1462 * add nexus to waiting list 1463 * clear nexus 1464 * try to start another command for another target/lun 1465 */ 1466 acb->intstat = sc->sc_flags & OSIOP_INTSOFF; 1467 TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); 1468 sc->sc_nexus = NULL; /* no current device */ 1469 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); 1470 /* XXXX start another command ? */ 1471 if (!TAILQ_EMPTY(&sc->ready_list)) 1472 osiop_sched(sc); 1473 return (0); 1474 } 1475 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { 1476 int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; 1477 int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; 1478 #ifdef OSIOP_DEBUG 1479 uint8_t resmsg; 1480 #endif 1481 1482 /* Reconnect */ 1483 /* XXXX save current SBCL */ 1484 sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); 1485 #ifdef OSIOP_DEBUG 1486 if (osiop_debug & DEBUG_DISC) 1487 printf("%s: target ID %02x reselected dsps %x\n", 1488 device_xname(sc->sc_dev), reselid, intcode); 1489 resmsg = osiop_read_1(sc, OSIOP_SFBR); 1490 if (!MSG_ISIDENTIFY(resmsg)) 1491 printf("%s: Reselect message in was not identify: " 1492 "%02x\n", device_xname(sc->sc_dev), resmsg); 1493 #endif 1494 if (sc->sc_nexus != NULL) { 1495 struct scsipi_periph *periph = 1496 sc->sc_nexus->xs->xs_periph; 1497 #ifdef OSIOP_DEBUG 1498 if (osiop_debug & DEBUG_DISC) 1499 printf("%s: reselect ID %02x w/active\n", 1500 device_xname(sc->sc_dev), reselid); 1501 #endif 1502 TAILQ_INSERT_HEAD(&sc->ready_list, 1503 sc->sc_nexus, chain); 1504 sc->sc_tinfo[periph->periph_target].lubusy 1505 &= ~(1 << periph->periph_lun); 1506 sc->sc_active--; 1507 } 1508 /* 1509 * locate acb of reselecting device 1510 * set sc->sc_nexus to acb 1511 */ 1512 TAILQ_FOREACH(acb, &sc->nexus_list, chain) { 1513 struct scsipi_periph *periph = acb->xs->xs_periph; 1514 if (reselid != periph->periph_target || 1515 reselun != periph->periph_lun) { 1516 continue; 1517 } 1518 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1519 sc->sc_nexus = acb; 1520 sc->sc_flags |= acb->intstat; 1521 acb->intstat = 0; 1522 osiop_write_4(sc, OSIOP_DSA, 1523 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1524 osiop_write_1(sc, OSIOP_SXFER, 1525 sc->sc_tinfo[reselid].sxfer); 1526 osiop_write_1(sc, OSIOP_SBCL, 1527 sc->sc_tinfo[reselid].sbcl); 1528 break; 1529 } 1530 if (acb == NULL) { 1531 printf("%s: target ID %02x reselect nexus_list %p\n", 1532 device_xname(sc->sc_dev), reselid, 1533 TAILQ_FIRST(&sc->nexus_list)); 1534 panic("unable to find reselecting device"); 1535 } 1536 1537 osiop_write_4(sc, OSIOP_TEMP, 0); 1538 osiop_write_1(sc, OSIOP_DCNTL, 1539 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1540 return (0); 1541 } 1542 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { 1543 #ifdef OSIOP_DEBUG 1544 uint8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); 1545 1546 /* reselect was interrupted (by Sig_P or select) */ 1547 if (osiop_debug & DEBUG_DISC || 1548 (ctest2 & OSIOP_CTEST2_SIGP) == 0) 1549 printf("%s: reselect interrupted (Sig_P?) " 1550 "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1551 device_xname(sc->sc_dev), 1552 osiop_read_1(sc, OSIOP_SCNTL1), ctest2, 1553 osiop_read_1(sc, OSIOP_SFBR), istat, 1554 osiop_read_1(sc, OSIOP_ISTAT)); 1555 #endif 1556 /* XXX assumes it was not select */ 1557 if (sc->sc_nexus == NULL) { 1558 #ifdef OSIOP_DEBUG 1559 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1560 device_xname(sc->sc_dev)); 1561 #if 0 1562 osiop_dump(sc); 1563 #ifdef DDB 1564 Debugger(); 1565 #endif 1566 #endif 1567 #endif 1568 osiop_write_1(sc, OSIOP_DCNTL, 1569 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1570 return (0); 1571 } 1572 target = sc->sc_nexus->xs->xs_periph->periph_target; 1573 osiop_write_4(sc, OSIOP_TEMP, 0); 1574 osiop_write_4(sc, OSIOP_DSA, 1575 dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); 1576 osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[target].sxfer); 1577 osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[target].sbcl); 1578 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); 1579 return (0); 1580 } 1581 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { 1582 /* Unrecognized message in byte */ 1583 if (acb == NULL) { 1584 printf("%s: Bad message-in with no active command?\n", 1585 device_xname(sc->sc_dev)); 1586 goto bad_phase; 1587 } 1588 printf("%s: Unrecognized message in data " 1589 "sfbr %x msg %x sbcl %x\n", device_xname(sc->sc_dev), 1590 osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], 1591 osiop_read_1(sc, OSIOP_SBCL)); 1592 /* what should be done here? */ 1593 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_clear_ack); 1594 bus_dmamap_sync(sc->sc_dmat, dsdma, 1595 acb->dsoffset, sizeof(struct osiop_ds), 1596 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1597 return (0); 1598 } 1599 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { 1600 /* Status phase wasn't followed by message in phase? */ 1601 printf("%s: Status phase not followed by message in phase? " 1602 "sbcl %x sbdl %x\n", device_xname(sc->sc_dev), 1603 osiop_read_1(sc, OSIOP_SBCL), 1604 osiop_read_1(sc, OSIOP_SBDL)); 1605 if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { 1606 /* It is now, just continue the script? */ 1607 osiop_write_1(sc, OSIOP_DCNTL, 1608 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1609 return (0); 1610 } 1611 } 1612 if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { 1613 printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1614 intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1615 osiop_read_1(sc, OSIOP_SBCL)); 1616 osiop_reset(sc); 1617 *status = SCSI_OSIOP_NOSTATUS; 1618 return (0); /* osiop_reset has cleaned up */ 1619 } 1620 if (sstat0 & OSIOP_SSTAT0_SGE) 1621 printf("%s: SCSI Gross Error\n", device_xname(sc->sc_dev)); 1622 if (sstat0 & OSIOP_SSTAT0_PAR) 1623 printf("%s: Parity Error\n", device_xname(sc->sc_dev)); 1624 if (dstat & OSIOP_DSTAT_IID) 1625 printf("%s: Invalid instruction detected\n", 1626 device_xname(sc->sc_dev)); 1627 bad_phase: 1628 /* 1629 * temporary panic for unhandled conditions 1630 * displays various things about the 53C710 status and registers 1631 * then panics. 1632 * XXXX need to clean this up to print out the info, reset, and continue 1633 */ 1634 printf("osiop_chkintr: target %x ds %p\n", target, ds); 1635 printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, 1636 acb ? sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset : 0, 1637 osiop_read_4(sc, OSIOP_DSP), 1638 osiop_read_4(sc, OSIOP_DBC)); 1639 printf("osiop_chkintr: istat %x dstat %x sstat0 %x " 1640 "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1641 istat, dstat, sstat0, intcode, 1642 osiop_read_4(sc, OSIOP_DSA), 1643 osiop_read_1(sc, OSIOP_SBCL), 1644 ds ? ds->stat[0] : 0, 1645 ds ? ds->msgbuf[0] : 0, 1646 ds ? ds->msgbuf[1] : 0, 1647 osiop_read_1(sc, OSIOP_SFBR)); 1648 #ifdef OSIOP_DEBUG 1649 if (osiop_debug & DEBUG_DMA) 1650 panic("osiop_chkintr: **** temp ****"); 1651 #ifdef DDB 1652 Debugger(); 1653 #endif 1654 #endif 1655 osiop_reset(sc); /* hard reset */ 1656 *status = SCSI_OSIOP_NOSTATUS; 1657 if (acb != NULL) 1658 acb->status = ACB_S_DONE; 1659 return (0); /* osiop_reset cleaned up */ 1660 } 1661 1662 void 1663 osiop_select(struct osiop_softc *sc) 1664 { 1665 struct osiop_acb *acb = sc->sc_nexus; 1666 1667 #ifdef OSIOP_DEBUG 1668 if (osiop_debug & DEBUG_CMD) 1669 printf("%s: select ", device_xname(sc->sc_dev)); 1670 #endif 1671 1672 if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) { 1673 sc->sc_flags |= OSIOP_INTSOFF; 1674 sc->sc_flags &= ~OSIOP_INTDEFER; 1675 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1676 osiop_write_1(sc, OSIOP_SIEN, 0); 1677 osiop_write_1(sc, OSIOP_DIEN, 0); 1678 } 1679 #if 0 1680 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 1681 sc->sc_flags &= ~OSIOP_INTSOFF; 1682 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1683 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1684 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1685 } 1686 #endif 1687 } 1688 #ifdef OSIOP_DEBUG 1689 if (osiop_debug & DEBUG_CMD) 1690 printf("osiop_select: target %x cmd %02x ds %p\n", 1691 acb->xs->xs_periph->periph_target, 1692 acb->xs->cmd->opcode, sc->sc_nexus->ds); 1693 #endif 1694 1695 osiop_start(sc); 1696 1697 return; 1698 } 1699 1700 /* 1701 * 53C710 interrupt handler 1702 */ 1703 1704 void 1705 osiop_intr(struct osiop_softc *sc) 1706 { 1707 int status, s; 1708 uint8_t istat, dstat, sstat0; 1709 1710 s = splbio(); 1711 1712 istat = sc->sc_istat; 1713 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 1714 splx(s); 1715 return; 1716 } 1717 1718 /* Got a valid interrupt on this device; set by MD handler */ 1719 dstat = sc->sc_dstat; 1720 sstat0 = sc->sc_sstat0; 1721 sc->sc_istat = 0; 1722 #ifdef OSIOP_DEBUG 1723 if (!sc->sc_active) { 1724 /* XXX needs sync */ 1725 printf("%s: spurious interrupt? " 1726 "istat %x dstat %x sstat0 %x nexus %p status %x\n", 1727 device_xname(sc->sc_dev), 1728 istat, dstat, sstat0, sc->sc_nexus, 1729 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); 1730 } 1731 #endif 1732 1733 #ifdef OSIOP_DEBUG 1734 if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { 1735 /* XXX needs sync */ 1736 printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " 1737 "sbcl %x dsp %x dcmd %x sts %x msg %x\n", 1738 device_xname(sc->sc_dev), 1739 istat, dstat, sstat0, 1740 osiop_read_4(sc, OSIOP_DSPS), 1741 osiop_read_1(sc, OSIOP_SBCL), 1742 osiop_read_4(sc, OSIOP_DSP), 1743 osiop_read_4(sc, OSIOP_DBC), 1744 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, 1745 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); 1746 } 1747 #endif 1748 if (sc->sc_flags & OSIOP_INTDEFER) { 1749 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 1750 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1751 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1752 } 1753 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 1754 #if 0 1755 if (status == SCSI_OSIOP_NOSTATUS) 1756 printf("osiop_intr: no valid status \n"); 1757 #endif 1758 if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != 1759 OSIOP_INTSOFF) { 1760 #if 0 1761 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1762 struct scsipi_periph *periph; 1763 1764 periph = sc->sc_nexus->xs->xs_periph; 1765 printf("%s: SCSI bus busy at completion" 1766 " targ %d sbcl %02x sfbr %x lcrc " 1767 "%02x dsp +%x\n", device_xname(sc->sc_dev), 1768 periph->periphtarget, 1769 osiop_read_1(sc, OSIOP_SBCL), 1770 osiop_read_1(sc, OSIOP_SFBR), 1771 osiop_read_1(sc, OSIOP_LCRC), 1772 osiop_read_4(sc, OSIOP_DSP) - 1773 sc->sc_scrdma->dm_segs[0].ds_addr); 1774 } 1775 #endif 1776 osiop_scsidone(sc->sc_nexus, status); 1777 } 1778 } 1779 splx(s); 1780 } 1781 1782 void 1783 osiop_update_xfer_mode(struct osiop_softc *sc, int target) 1784 { 1785 struct osiop_tinfo *tinfo = &sc->sc_tinfo[target]; 1786 struct scsipi_xfer_mode xm; 1787 1788 xm.xm_target = target; 1789 xm.xm_mode = 0; 1790 xm.xm_period = 0; 1791 xm.xm_offset = 0; 1792 1793 if (tinfo->period) { 1794 xm.xm_mode |= PERIPH_CAP_SYNC; 1795 xm.xm_period = tinfo->period; 1796 xm.xm_offset = tinfo->offset; 1797 } 1798 1799 scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 1800 } 1801 1802 void 1803 scsi_period_to_osiop(struct osiop_softc *sc, int target) 1804 { 1805 int period, offset, sxfer, sbcl; 1806 1807 period = sc->sc_tinfo[target].period; 1808 offset = sc->sc_tinfo[target].offset; 1809 for (sbcl = 1; sbcl < 4; sbcl++) { 1810 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1811 if (sxfer >= 0 && sxfer <= 7) 1812 break; 1813 } 1814 if (sbcl > 3) { 1815 printf("osiop sync: unable to compute sync params " 1816 "for period %d ns\n", period * 4); 1817 /* 1818 * XXX need to pick a value we can do and renegotiate 1819 */ 1820 sxfer = sbcl = 0; 1821 } else { 1822 sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? 1823 offset : OSIOP_MAX_OFFSET); 1824 #ifdef DEBUG_SYNC 1825 printf("osiop sync: params for period %dns: sxfer %x sbcl %x", 1826 period * 4, sxfer, sbcl); 1827 printf(" actual period %dns\n", 1828 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1829 #endif 1830 } 1831 sc->sc_tinfo[target].sxfer = sxfer; 1832 sc->sc_tinfo[target].sbcl = sbcl; 1833 #ifdef DEBUG_SYNC 1834 printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); 1835 #endif 1836 } 1837 1838 void 1839 osiop_timeout(void *arg) 1840 { 1841 struct osiop_acb *acb = arg; 1842 struct scsipi_xfer *xs = acb->xs; 1843 struct osiop_softc *sc = acb->sc; 1844 int s; 1845 1846 scsipi_printaddr(xs->xs_periph); 1847 printf("command timeout\n"); 1848 1849 s = splbio(); 1850 /* reset the scsi bus */ 1851 osiop_resetbus(sc); 1852 1853 /* deactivate callout */ 1854 callout_stop(&xs->xs_callout); 1855 acb->flags |= ACB_F_TIMEOUT; 1856 osiop_reset(sc); 1857 splx(s); 1858 return; 1859 } 1860 1861 #ifdef OSIOP_DEBUG 1862 1863 #if OSIOP_TRACE_SIZE 1864 void 1865 osiop_dump_trace(void) 1866 { 1867 int i; 1868 1869 printf("osiop trace: next index %d\n", osiop_trix); 1870 i = osiop_trix; 1871 do { 1872 printf("%3d: '%c' %02x %02x %02x\n", i, 1873 osiop_trbuf[i], osiop_trbuf[i + 1], 1874 osiop_trbuf[i + 2], osiop_trbuf[i + 3]); 1875 i = (i + 4) & (OSIOP_TRACE_SIZE - 1); 1876 } while (i != osiop_trix); 1877 } 1878 #endif 1879 1880 void 1881 osiop_dump_acb(struct osiop_acb *acb) 1882 { 1883 uint8_t *b; 1884 int i; 1885 1886 printf("acb@%p ", acb); 1887 if (acb->xs == NULL) { 1888 printf("<unused>\n"); 1889 return; 1890 } 1891 1892 b = (uint8_t *)&acb->xs->cmd; 1893 printf("(%d:%d) status %2x cmdlen %2ld cmd ", 1894 acb->xs->xs_periph->periph_target, 1895 acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen); 1896 for (i = acb->cmdlen; i > 0; i--) 1897 printf(" %02x", *b++); 1898 printf("\n"); 1899 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1900 acb->xs->datalen); 1901 printf("va %p:%lx ", acb->data, acb->datalen); 1902 printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); 1903 } 1904 1905 void 1906 osiop_dump(struct osiop_softc *sc) 1907 { 1908 struct osiop_acb *acb; 1909 int i, s; 1910 1911 s = splbio(); 1912 #if OSIOP_TRACE_SIZE 1913 osiop_dump_trace(); 1914 #endif 1915 printf("%s@%p istat %02x\n", 1916 device_xname(sc->sc_dev), sc, osiop_read_1(sc, OSIOP_ISTAT)); 1917 if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { 1918 printf("Free list:\n"); 1919 while (acb) { 1920 osiop_dump_acb(acb); 1921 acb = TAILQ_NEXT(acb, chain); 1922 } 1923 } 1924 if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { 1925 printf("Ready list:\n"); 1926 while (acb) { 1927 osiop_dump_acb(acb); 1928 acb = TAILQ_NEXT(acb, chain); 1929 } 1930 } 1931 if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 1932 printf("Nexus list:\n"); 1933 while (acb) { 1934 osiop_dump_acb(acb); 1935 acb = TAILQ_NEXT(acb, chain); 1936 } 1937 } 1938 if (sc->sc_nexus) { 1939 printf("Nexus:\n"); 1940 osiop_dump_acb(sc->sc_nexus); 1941 } 1942 for (i = 0; i < OSIOP_NTGT; i++) { 1943 if (sc->sc_tinfo[i].cmds > 2) { 1944 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1945 i, sc->sc_tinfo[i].cmds, 1946 sc->sc_tinfo[i].dconns, 1947 sc->sc_tinfo[i].lubusy); 1948 } 1949 } 1950 splx(s); 1951 } 1952 #endif
Cache object: 5514b6b20288d49f202537cdff4ca41a
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