osiop.c revision 1.28
1 /* $NetBSD: osiop.c,v 1.28 2007/06/30 14:08:58 tsutsui 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Copyright (c) 1990 The Regents of the University of California. 31 * All rights reserved. 32 * 33 * This code is derived from software contributed to Berkeley by 34 * Van Jacobson of Lawrence Berkeley Laboratory. 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 * @(#)siop.c 7.5 (Berkeley) 5/4/91 61 */ 62 63 /* 64 * Copyright (c) 1994 Michael L. Hitch 65 * 66 * This code is derived from software contributed to Berkeley by 67 * Van Jacobson of Lawrence Berkeley Laboratory. 68 * 69 * Redistribution and use in source and binary forms, with or without 70 * modification, are permitted provided that the following conditions 71 * are met: 72 * 1. Redistributions of source code must retain the above copyright 73 * notice, this list of conditions and the following disclaimer. 74 * 2. Redistributions in binary form must reproduce the above copyright 75 * notice, this list of conditions and the following disclaimer in the 76 * documentation and/or other materials provided with the distribution. 77 * 78 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 79 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 80 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 81 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 82 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 83 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 84 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 85 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 86 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 87 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 88 * 89 * @(#)siop.c 7.5 (Berkeley) 5/4/91 90 */ 91 92 /* 93 * MI NCR53C710 scsi adaptor driver; based on arch/amiga/dev/siop.c: 94 * NetBSD: siop.c,v 1.43 1999/09/30 22:59:53 thorpej Exp 95 * 96 * bus_space/bus_dma'fied by Izumi Tsutsui <tsutsui (at) ceres.dti.ne.jp> 97 * 98 * The 53c710 datasheet is available at: 99 * http://www.lsilogic.com/techlib/techdocs/storage_stand_prod/index.html 100 */ 101 102 #include <sys/cdefs.h> 103 __KERNEL_RCSID(0, "$NetBSD: osiop.c,v 1.28 2007/06/30 14:08:58 tsutsui Exp $"); 104 105 /* #define OSIOP_DEBUG */ 106 107 #include "opt_ddb.h" 108 109 #include <sys/param.h> 110 #include <sys/systm.h> 111 #include <sys/device.h> 112 #include <sys/malloc.h> 113 #include <sys/buf.h> 114 #include <sys/kernel.h> 115 116 #include <uvm/uvm_extern.h> 117 118 #include <dev/scsipi/scsi_all.h> 119 #include <dev/scsipi/scsipi_all.h> 120 #include <dev/scsipi/scsiconf.h> 121 #include <dev/scsipi/scsi_message.h> 122 123 #include <machine/cpu.h> 124 #include <machine/bus.h> 125 126 #include <dev/ic/osiopreg.h> 127 #include <dev/ic/osiopvar.h> 128 129 /* 53C710 script */ 130 #include <dev/microcode/siop/osiop.out> 131 132 void osiop_attach(struct osiop_softc *); 133 void osiop_minphys(struct buf *); 134 void osiop_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 135 void *); 136 void osiop_poll(struct osiop_softc *, struct osiop_acb *); 137 void osiop_sched(struct osiop_softc *); 138 void osiop_scsidone(struct osiop_acb *, int); 139 void osiop_abort(struct osiop_softc *, const char *); 140 void osiop_init(struct osiop_softc *); 141 void osiop_reset(struct osiop_softc *); 142 void osiop_resetbus(struct osiop_softc *); 143 void osiop_start(struct osiop_softc *); 144 int osiop_checkintr(struct osiop_softc *, uint8_t, uint8_t, uint8_t, int *); 145 void osiop_select(struct osiop_softc *); 146 void osiop_update_xfer_mode(struct osiop_softc *, int); 147 void scsi_period_to_osiop(struct osiop_softc *, int); 148 void osiop_timeout(void *); 149 150 int osiop_reset_delay = 250; /* delay after reset, in milliseconds */ 151 152 #ifdef OSIOP_DEBUG 153 #define DEBUG_DMA 0x01 154 #define DEBUG_INT 0x02 155 #define DEBUG_PHASE 0x04 156 #define DEBUG_UNEXCEPT 0x08 157 #define DEBUG_DISC 0x10 158 #define DEBUG_CMD 0x20 159 #define DEBUG_ALL 0xff 160 int osiop_debug = 0; /*DEBUG_ALL;*/ 161 162 int osiopsync_debug = 0; 163 int osiopdma_hits = 1; 164 int osiopstarts = 0; 165 int osiopints = 0; 166 int osiopphmm = 0; 167 int osiop_trix = 0; 168 #define OSIOP_TRACE_SIZE 128 169 #define OSIOP_TRACE(a,b,c,d) do { \ 170 osiop_trbuf[osiop_trix + 0] = (a); \ 171 osiop_trbuf[osiop_trix + 1] = (b); \ 172 osiop_trbuf[osiop_trix + 2] = (c); \ 173 osiop_trbuf[osiop_trix + 3] = (d); \ 174 osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \ 175 } while (0) 176 uint8_t osiop_trbuf[OSIOP_TRACE_SIZE]; 177 void osiop_dump_trace(void); 178 void osiop_dump_acb(struct osiop_acb *); 179 void osiop_dump(struct osiop_softc *); 180 #else 181 #define OSIOP_TRACE(a,b,c,d) 182 #endif 183 184 void 185 osiop_attach(struct osiop_softc *sc) 186 { 187 struct osiop_acb *acb; 188 bus_dma_segment_t seg; 189 int nseg; 190 int i, err; 191 192 /* 193 * Allocate and map DMA-safe memory for the script. 194 */ 195 err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 196 &seg, 1, &nseg, BUS_DMA_NOWAIT); 197 if (err) { 198 printf(": failed to allocate script memory, err=%d\n", err); 199 return; 200 } 201 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE, 202 (void **)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 203 if (err) { 204 printf(": failed to map script memory, err=%d\n", err); 205 return; 206 } 207 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 208 BUS_DMA_NOWAIT, &sc->sc_scrdma); 209 if (err) { 210 printf(": failed to create script map, err=%d\n", err); 211 return; 212 } 213 err = bus_dmamap_load(sc->sc_dmat, sc->sc_scrdma, 214 sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 215 if (err) { 216 printf(": failed to load script map, err=%d\n", err); 217 return; 218 } 219 220 /* 221 * Copy and sync script 222 */ 223 memcpy(sc->sc_script, osiop_script, sizeof(osiop_script)); 224 bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script), 225 BUS_DMASYNC_PREWRITE); 226 227 /* 228 * Allocate and map DMA-safe memory for the script data structure. 229 */ 230 err = bus_dmamem_alloc(sc->sc_dmat, 231 sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0, 232 &seg, 1, &nseg, BUS_DMA_NOWAIT); 233 if (err) { 234 printf(": failed to allocate ds memory, err=%d\n", err); 235 return; 236 } 237 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, 238 sizeof(struct osiop_ds) * OSIOP_NACB, (void **)&sc->sc_ds, 239 BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 240 if (err) { 241 printf(": failed to map ds memory, err=%d\n", err); 242 return; 243 } 244 err = bus_dmamap_create(sc->sc_dmat, 245 sizeof(struct osiop_ds) * OSIOP_NACB, 1, 246 sizeof(struct osiop_ds) * OSIOP_NACB, 0, 247 BUS_DMA_NOWAIT, &sc->sc_dsdma); 248 if (err) { 249 printf(": failed to create ds map, err=%d\n", err); 250 return; 251 } 252 err = bus_dmamap_load(sc->sc_dmat, sc->sc_dsdma, sc->sc_ds, 253 sizeof(struct osiop_ds) * OSIOP_NACB, NULL, BUS_DMA_NOWAIT); 254 if (err) { 255 printf(": failed to load ds map, err=%d\n", err); 256 return; 257 } 258 259 acb = malloc(sizeof(struct osiop_acb) * OSIOP_NACB, 260 M_DEVBUF, M_NOWAIT|M_ZERO); 261 if (acb == NULL) { 262 printf(": can't allocate memory for acb\n"); 263 return; 264 } 265 sc->sc_acb = acb; 266 sc->sc_cfflags = device_cfdata(&sc->sc_dev)->cf_flags; 267 sc->sc_nexus = NULL; 268 sc->sc_active = 0; 269 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 270 271 /* Initialize command block queue */ 272 TAILQ_INIT(&sc->ready_list); 273 TAILQ_INIT(&sc->nexus_list); 274 TAILQ_INIT(&sc->free_list); 275 276 /* Initialize each command block */ 277 for (i = 0; i < OSIOP_NACB; i++) { 278 bus_addr_t dsa; 279 280 err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, 281 OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); 282 if (err) { 283 printf(": failed to create datadma map, err=%d\n", 284 err); 285 return; 286 } 287 288 acb->sc = sc; 289 acb->ds = &sc->sc_ds[i]; 290 acb->dsoffset = sizeof(struct osiop_ds) * i; 291 292 dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; 293 acb->ds->id.addr = dsa + OSIOP_DSIDOFF; 294 acb->ds->cmd.addr = dsa + OSIOP_DSCMDOFF; 295 acb->ds->status.count = 1; 296 acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; 297 acb->ds->msg.count = 1; 298 acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; 299 acb->ds->msgin.count = 1; 300 acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; 301 acb->ds->extmsg.count = 1; 302 acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; 303 acb->ds->synmsg.count = 3; 304 acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; 305 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 306 307 acb++; 308 } 309 310 printf(": NCR53C710 rev %d, %dMHz, SCSI ID %d\n", 311 osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq, sc->sc_id); 312 313 /* 314 * Initialize all 315 */ 316 osiop_init(sc); 317 318 /* 319 * Fill in the adapter. 320 */ 321 sc->sc_adapter.adapt_dev = &sc->sc_dev; 322 sc->sc_adapter.adapt_nchannels = 1; 323 sc->sc_adapter.adapt_openings = OSIOP_NACB; 324 sc->sc_adapter.adapt_max_periph = 1; 325 sc->sc_adapter.adapt_ioctl = NULL; 326 sc->sc_adapter.adapt_minphys = osiop_minphys; 327 sc->sc_adapter.adapt_request = osiop_scsipi_request; 328 329 /* 330 * Fill in the channel. 331 */ 332 sc->sc_channel.chan_adapter = &sc->sc_adapter; 333 sc->sc_channel.chan_bustype = &scsi_bustype; 334 sc->sc_channel.chan_channel = 0; 335 sc->sc_channel.chan_ntargets = OSIOP_NTGT; 336 sc->sc_channel.chan_nluns = 8; 337 sc->sc_channel.chan_id = sc->sc_id; 338 339 /* 340 * Now try to attach all the sub devices. 341 */ 342 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 343 } 344 345 /* 346 * default minphys routine for osiop based controllers 347 */ 348 void 349 osiop_minphys(struct buf *bp) 350 { 351 352 if (bp->b_bcount > OSIOP_MAX_XFER) 353 bp->b_bcount = OSIOP_MAX_XFER; 354 minphys(bp); 355 } 356 357 /* 358 * used by specific osiop controller 359 * 360 */ 361 void 362 osiop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 363 void *arg) 364 { 365 struct scsipi_xfer *xs; 366 struct scsipi_periph *periph; 367 struct osiop_acb *acb; 368 struct osiop_softc *sc; 369 int err, flags, s; 370 371 sc = (struct osiop_softc *)chan->chan_adapter->adapt_dev; 372 373 switch (req) { 374 case ADAPTER_REQ_RUN_XFER: 375 xs = arg; 376 periph = xs->xs_periph; 377 flags = xs->xs_control; 378 379 /* XXXX ?? */ 380 if (flags & XS_CTL_DATA_UIO) 381 panic("osiop: scsi data uio requested"); 382 383 /* XXXX ?? */ 384 if (sc->sc_nexus && flags & XS_CTL_POLL) 385 #if 0 386 panic("osiop_scsicmd: busy"); 387 #else 388 printf("osiop_scsicmd: busy\n"); 389 #endif 390 391 s = splbio(); 392 acb = TAILQ_FIRST(&sc->free_list); 393 if (acb != NULL) { 394 TAILQ_REMOVE(&sc->free_list, acb, chain); 395 } 396 #ifdef DIAGNOSTIC 397 else { 398 scsipi_printaddr(periph); 399 printf("unable to allocate acb\n"); 400 panic("osiop_scsipi_request"); 401 } 402 #endif 403 404 acb->status = ACB_S_READY; 405 acb->xs = xs; 406 407 /* Setup DMA map for data buffer */ 408 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 409 err = bus_dmamap_load(sc->sc_dmat, acb->datadma, 410 xs->data, xs->datalen, NULL, 411 BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 412 ((xs->xs_control & XS_CTL_DATA_IN) ? 413 BUS_DMA_READ : BUS_DMA_WRITE)); 414 if (err) { 415 printf("%s: unable to load data DMA map: %d\n", 416 sc->sc_dev.dv_xname, err); 417 xs->error = XS_DRIVER_STUFFUP; 418 scsipi_done(xs); 419 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 420 splx(s); 421 return; 422 } 423 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 424 0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN) ? 425 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 426 } 427 428 acb->cmdlen = xs->cmdlen; 429 acb->datalen = xs->datalen; 430 #ifdef OSIOP_DEBUG 431 acb->data = xs->data; 432 #endif 433 434 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 435 436 if (sc->sc_nexus == NULL) 437 osiop_sched(sc); 438 439 splx(s); 440 441 if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) 442 osiop_poll(sc, acb); 443 return; 444 445 case ADAPTER_REQ_GROW_RESOURCES: 446 return; 447 448 case ADAPTER_REQ_SET_XFER_MODE: 449 { 450 struct osiop_tinfo *ti; 451 struct scsipi_xfer_mode *xm = arg; 452 453 ti = &sc->sc_tinfo[xm->xm_target]; 454 455 if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 456 (ti->flags & TI_NOSYNC) == 0) 457 ti->state = NEG_INIT; 458 459 /* 460 * If we're not going to negotiate, send the 461 * notification now, since it won't happen later. 462 */ 463 if (ti->state == NEG_DONE) 464 osiop_update_xfer_mode(sc, xm->xm_target); 465 466 return; 467 } 468 } 469 } 470 471 void 472 osiop_poll(struct osiop_softc *sc, struct osiop_acb *acb) 473 { 474 struct scsipi_xfer *xs = acb->xs; 475 int status, i, s, to; 476 uint8_t istat, dstat, sstat0; 477 478 s = splbio(); 479 to = xs->timeout / 1000; 480 if (!TAILQ_EMPTY(&sc->nexus_list)) 481 printf("%s: osiop_poll called with disconnected device\n", 482 sc->sc_dev.dv_xname); 483 for (;;) { 484 i = 1000; 485 while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & 486 (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 487 if (i <= 0) { 488 #ifdef OSIOP_DEBUG 489 printf("waiting: tgt %d cmd %02x sbcl %02x" 490 " dsp %x (+%lx) dcmd %x" 491 " ds %p timeout %d\n", 492 xs->xs_periph->periph_target, 493 xs->cmd->opcode, 494 osiop_read_1(sc, OSIOP_SBCL), 495 osiop_read_4(sc, OSIOP_DSP), 496 osiop_read_4(sc, OSIOP_DSP) - 497 sc->sc_scrdma->dm_segs[0].ds_addr, 498 osiop_read_1(sc, OSIOP_DCMD), 499 acb->ds, acb->xs->timeout); 500 #endif 501 i = 1000; 502 to--; 503 if (to <= 0) { 504 osiop_reset(sc); 505 splx(s); 506 return; 507 } 508 } 509 delay(1000); 510 i--; 511 } 512 sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 513 delay(25); 514 dstat = osiop_read_1(sc, OSIOP_DSTAT); 515 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 516 if (acb != sc->sc_nexus) 517 printf("%s: osiop_poll disconnected device" 518 " completed\n", sc->sc_dev.dv_xname); 519 else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 520 sc->sc_flags &= ~OSIOP_INTSOFF; 521 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 522 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 523 } 524 osiop_scsidone(sc->sc_nexus, status); 525 } 526 527 if (xs->xs_status & XS_STS_DONE) 528 break; 529 } 530 531 splx(s); 532 return; 533 } 534 535 /* 536 * start next command that's ready 537 */ 538 void 539 osiop_sched(struct osiop_softc *sc) 540 { 541 struct scsipi_periph *periph; 542 struct osiop_acb *acb; 543 int i; 544 545 #ifdef OSIOP_DEBUG 546 if (sc->sc_nexus != NULL) { 547 printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n", 548 sc->sc_dev.dv_xname, sc->sc_nexus, 549 sc->sc_nexus->xs->xs_periph->periph_target, 550 sc->ready_list.tqh_first, 551 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 552 return; 553 } 554 #endif 555 TAILQ_FOREACH(acb, &sc->ready_list, chain) { 556 periph = acb->xs->xs_periph; 557 i = periph->periph_target; 558 if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) { 559 struct osiop_tinfo *ti; 560 561 TAILQ_REMOVE(&sc->ready_list, acb, chain); 562 sc->sc_nexus = acb; 563 ti = &sc->sc_tinfo[i]; 564 ti->lubusy |= (1 << periph->periph_lun); 565 break; 566 } 567 } 568 569 if (acb == NULL) { 570 #ifdef OSIOP_DEBUG 571 printf("%s: osiop_sched didn't find ready command\n", 572 sc->sc_dev.dv_xname); 573 #endif 574 return; 575 } 576 577 if (acb->xs->xs_control & XS_CTL_RESET) 578 osiop_reset(sc); 579 580 sc->sc_active++; 581 osiop_select(sc); 582 } 583 584 void 585 osiop_scsidone(struct osiop_acb *acb, int status) 586 { 587 struct scsipi_xfer *xs; 588 struct scsipi_periph *periph; 589 struct osiop_softc *sc; 590 int dosched = 0; 591 592 #ifdef DIAGNOSTIC 593 if (acb == NULL || acb->xs == NULL) { 594 printf("osiop_scsidone: NULL acb or scsipi_xfer\n"); 595 #if defined(OSIOP_DEBUG) && defined(DDB) 596 Debugger(); 597 #endif 598 return; 599 } 600 #endif 601 xs = acb->xs; 602 sc = acb->sc; 603 periph = xs->xs_periph; 604 605 #ifdef OSIOP_DEBUG 606 if (acb->status != ACB_S_DONE) 607 printf("%s: acb not done (status %d)\n", 608 sc->sc_dev.dv_xname, acb->status); 609 #endif 610 611 xs->status = status; 612 613 switch (status) { 614 case SCSI_OK: 615 xs->error = XS_NOERROR; 616 break; 617 case SCSI_BUSY: 618 xs->error = XS_BUSY; 619 break; 620 case SCSI_CHECK: 621 xs->error = XS_BUSY; 622 break; 623 case SCSI_OSIOP_NOCHECK: 624 /* 625 * don't check status, xs->error is already valid 626 */ 627 break; 628 case SCSI_OSIOP_NOSTATUS: 629 /* 630 * the status byte was not updated, cmd was 631 * aborted 632 */ 633 xs->error = XS_SELTIMEOUT; 634 break; 635 default: 636 #ifdef OSIOP_DEBUG 637 printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", 638 sc->sc_dev.dv_xname, status); 639 #endif 640 xs->error = XS_DRIVER_STUFFUP; 641 break; 642 } 643 644 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 645 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, 646 (xs->xs_control & XS_CTL_DATA_IN) ? 647 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 648 bus_dmamap_unload(sc->sc_dmat, acb->datadma); 649 } 650 651 /* 652 * Remove the ACB from whatever queue it's on. We have to do a bit of 653 * a hack to figure out which queue it's on. Note that it is *not* 654 * necessary to cdr down the ready queue, but we must cdr down the 655 * nexus queue and see if it's there, so we can mark the unit as no 656 * longer busy. This code is sickening, but it works. 657 */ 658 if (acb == sc->sc_nexus) { 659 sc->sc_nexus = NULL; 660 sc->sc_tinfo[periph->periph_target].lubusy &= 661 ~(1 << periph->periph_lun); 662 if (!TAILQ_EMPTY(&sc->ready_list)) 663 dosched = 1; /* start next command */ 664 sc->sc_active--; 665 OSIOP_TRACE('d', 'a', status, 0); 666 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 667 TAILQ_REMOVE(&sc->ready_list, acb, chain); 668 OSIOP_TRACE('d', 'r', status, 0); 669 } else { 670 struct osiop_acb *acb2; 671 TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { 672 if (acb2 == acb) { 673 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 674 sc->sc_tinfo[periph->periph_target].lubusy &= 675 ~(1 << periph->periph_lun); 676 sc->sc_active--; 677 break; 678 } 679 } 680 if (acb2 == NULL) { 681 if (acb->chain.tqe_next != NULL) { 682 TAILQ_REMOVE(&sc->ready_list, acb, chain); 683 sc->sc_active--; 684 } else { 685 printf("%s: can't find matching acb\n", 686 sc->sc_dev.dv_xname); 687 #ifdef DDB 688 #if 0 689 Debugger(); 690 #endif 691 #endif 692 } 693 } 694 OSIOP_TRACE('d', 'n', status, 0); 695 } 696 /* Put it on the free list. */ 697 acb->status = ACB_S_FREE; 698 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 699 sc->sc_tinfo[periph->periph_target].cmds++; 700 701 callout_stop(&xs->xs_callout); 702 xs->resid = 0; 703 scsipi_done(xs); 704 705 if (dosched && sc->sc_nexus == NULL) 706 osiop_sched(sc); 707 } 708 709 void 710 osiop_abort(struct osiop_softc *sc, const char *where) 711 { 712 713 printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 714 sc->sc_dev.dv_xname, where, 715 osiop_read_1(sc, OSIOP_DSTAT), 716 osiop_read_1(sc, OSIOP_SSTAT0), 717 osiop_read_1(sc, OSIOP_SBCL)); 718 719 /* XXX XXX XXX */ 720 if (sc->sc_active > 0) { 721 sc->sc_active = 0; 722 } 723 } 724 725 void 726 osiop_init(struct osiop_softc *sc) 727 { 728 int i, inhibit_sync, inhibit_disc; 729 730 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 731 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 732 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 733 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 734 735 if (sc->sc_minsync < 25) 736 sc->sc_minsync = 25; 737 738 if (sc->sc_clock_freq <= 25) { 739 sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ 740 sc->sc_tcp[0] = sc->sc_tcp[1]; 741 } else if (sc->sc_clock_freq <= 37) { 742 sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ 743 sc->sc_tcp[0] = sc->sc_tcp[2]; 744 } else if (sc->sc_clock_freq <= 50) { 745 sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ 746 sc->sc_tcp[0] = sc->sc_tcp[3]; 747 } else { 748 sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ 749 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 750 } 751 752 if ((sc->sc_cfflags & 0x10000) != 0) { 753 sc->sc_flags |= OSIOP_NODMA; 754 #ifdef OSIOP_DEBUG 755 printf("%s: DMA disabled; use polling\n", 756 sc->sc_dev.dv_xname); 757 #endif 758 } 759 760 inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ 761 inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ 762 #ifdef OSIOP_DEBUG 763 if (inhibit_sync != 0) 764 printf("%s: Inhibiting synchronous transfer: 0x%02x\n", 765 sc->sc_dev.dv_xname, inhibit_sync); 766 if (inhibit_disc != 0) 767 printf("%s: Inhibiting disconnect: 0x%02x\n", 768 sc->sc_dev.dv_xname, inhibit_disc); 769 #endif 770 for (i = 0; i < OSIOP_NTGT; i++) { 771 if (inhibit_sync & (1 << i)) 772 sc->sc_tinfo[i].flags |= TI_NOSYNC; 773 if (inhibit_disc & (1 << i)) 774 sc->sc_tinfo[i].flags |= TI_NODISC; 775 } 776 777 osiop_resetbus(sc); 778 osiop_reset(sc); 779 } 780 781 void 782 osiop_reset(struct osiop_softc *sc) 783 { 784 struct osiop_acb *acb; 785 int i, s; 786 uint8_t stat; 787 788 #ifdef OSIOP_DEBUG 789 printf("%s: resetting chip\n", sc->sc_dev.dv_xname); 790 #endif 791 if (sc->sc_flags & OSIOP_ALIVE) 792 osiop_abort(sc, "reset"); 793 794 s = splbio(); 795 796 /* 797 * Reset the chip 798 * XXX - is this really needed? 799 */ 800 801 /* abort current script */ 802 osiop_write_1(sc, OSIOP_ISTAT, 803 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); 804 /* reset chip */ 805 osiop_write_1(sc, OSIOP_ISTAT, 806 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); 807 delay(100); 808 osiop_write_1(sc, OSIOP_ISTAT, 809 osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); 810 delay(100); 811 812 /* 813 * Set up various chip parameters 814 */ 815 osiop_write_1(sc, OSIOP_SCNTL0, 816 OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); 817 osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); 818 osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); 819 osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4); 820 /* don't enable interrupts yet */ 821 osiop_write_1(sc, OSIOP_SIEN, 0x00); 822 osiop_write_1(sc, OSIOP_DIEN, 0x00); 823 osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); 824 osiop_write_1(sc, OSIOP_DWT, 0x00); 825 osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) 826 | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); 827 osiop_write_1(sc, OSIOP_CTEST7, 828 osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); 829 osiop_write_1(sc, OSIOP_CTEST4, 830 osiop_read_1(sc, OSIOP_CTEST4) | sc->sc_ctest4); 831 832 /* will need to re-negotiate sync xfers */ 833 for (i = 0; i < OSIOP_NTGT; i++) { 834 sc->sc_tinfo[i].state = NEG_INIT; 835 sc->sc_tinfo[i].period = 0; 836 sc->sc_tinfo[i].offset = 0; 837 } 838 839 stat = osiop_read_1(sc, OSIOP_ISTAT); 840 if (stat & OSIOP_ISTAT_SIP) 841 osiop_read_1(sc, OSIOP_SSTAT0); 842 delay(25); 843 if (stat & OSIOP_ISTAT_DIP) 844 osiop_read_1(sc, OSIOP_DSTAT); 845 846 splx(s); 847 848 delay(osiop_reset_delay * 1000); 849 850 if (sc->sc_nexus != NULL) { 851 sc->sc_nexus->xs->error = 852 (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? 853 XS_TIMEOUT : XS_RESET; 854 sc->sc_nexus->status = ACB_S_DONE; 855 sc->sc_nexus->flags = 0; 856 osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); 857 } 858 while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 859 acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? 860 XS_TIMEOUT : XS_RESET; 861 acb->status = ACB_S_DONE; 862 acb->flags = 0; 863 osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); 864 } 865 866 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 867 /* enable SCSI and DMA interrupts */ 868 sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ 869 OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; 870 sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | 871 /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; 872 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 873 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 874 } 875 876 void 877 osiop_resetbus(struct osiop_softc *sc) 878 { 879 880 osiop_write_1(sc, OSIOP_SIEN, 0); 881 osiop_write_1(sc, OSIOP_SCNTL1, 882 osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); 883 delay(25); 884 osiop_write_1(sc, OSIOP_SCNTL1, 885 osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); 886 } 887 888 /* 889 * Setup Data Storage for 53C710 and start SCRIPTS processing 890 */ 891 892 void 893 osiop_start(struct osiop_softc *sc) 894 { 895 struct osiop_acb *acb = sc->sc_nexus; 896 struct osiop_ds *ds = acb->ds; 897 struct scsipi_xfer *xs = acb->xs; 898 bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; 899 struct osiop_tinfo *ti; 900 int target = xs->xs_periph->periph_target; 901 int lun = xs->xs_periph->periph_lun; 902 int disconnect, i; 903 904 #ifdef OSIOP_DEBUG 905 if (osiop_debug & DEBUG_DISC && 906 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 907 printf("ACK! osiop was busy: script %p dsa %p active %d\n", 908 sc->sc_script, acb->ds, sc->sc_active); 909 printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 910 osiop_read_1(sc, OSIOP_ISTAT), 911 osiop_read_1(sc, OSIOP_SFBR), 912 osiop_read_1(sc, OSIOP_LCRC), 913 osiop_read_1(sc, OSIOP_SIEN), 914 osiop_read_1(sc, OSIOP_DIEN)); 915 #ifdef DDB 916 #if 0 917 Debugger(); 918 #endif 919 #endif 920 } 921 #endif 922 923 #ifdef OSIOP_DEBUG 924 if (acb->status != ACB_S_READY) 925 panic("osiop_start: non-ready cmd in acb"); 926 #endif 927 928 acb->intstat = 0; 929 930 /* copy SCSI command to DMA buffer */ 931 memcpy(ds->scsipi_cmd, xs->cmd, acb->cmdlen); 932 ds->cmd.count = acb->cmdlen; 933 934 ti = &sc->sc_tinfo[target]; 935 ds->scsi_addr = ((1 << 16) << target) | (ti->sxfer << 8); 936 937 disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 && 938 (ti->flags & TI_NODISC) == 0; 939 940 ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); 941 ds->id.count = 1; 942 ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ 943 ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; 944 memset(&ds->data, 0, sizeof(ds->data)); 945 946 /* 947 * Negotiate wide is the initial negotiation state; since the 53c710 948 * doesn't do wide transfers, just begin the synchronous transfer 949 * negotiation here. 950 */ 951 if (ti->state == NEG_INIT) { 952 if ((ti->flags & TI_NOSYNC) != 0) { 953 ti->state = NEG_DONE; 954 ti->sbcl = 0; 955 ti->sxfer = 0; 956 ti->period = 0; 957 ti->offset = 0; 958 osiop_update_xfer_mode(sc, target); 959 #ifdef OSIOP_DEBUG 960 if (osiopsync_debug) 961 printf("Forcing target %d asynchronous\n", 962 target); 963 #endif 964 } else { 965 ds->msgbuf[2] = MSG_INVALID; 966 ds->msgout[1] = MSG_EXTENDED; 967 ds->msgout[2] = MSG_EXT_SDTR_LEN; 968 ds->msgout[3] = MSG_EXT_SDTR; 969 ds->msgout[4] = sc->sc_minsync; 970 ds->msgout[5] = OSIOP_MAX_OFFSET; 971 ds->id.count = MSG_EXT_SDTR_LEN + 3; 972 ti->state = NEG_WAITS; 973 #ifdef OSIOP_DEBUG 974 if (osiopsync_debug) 975 printf("Sending sync request to target %d\n", 976 target); 977 #endif 978 } 979 } 980 981 acb->curaddr = 0; 982 acb->curlen = 0; 983 984 /* 985 * Build physical DMA addresses for scatter/gather I/O 986 */ 987 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 988 for (i = 0; i < datadma->dm_nsegs; i++) { 989 ds->data[i].count = datadma->dm_segs[i].ds_len; 990 ds->data[i].addr = datadma->dm_segs[i].ds_addr; 991 } 992 } 993 994 /* sync script data structure */ 995 bus_dmamap_sync(sc->sc_dmat, dsdma, 996 acb->dsoffset, sizeof(struct osiop_ds), 997 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 998 999 acb->status = ACB_S_ACTIVE; 1000 1001 /* handle timeout */ 1002 if ((xs->xs_control & XS_CTL_POLL) == 0) { 1003 int timeout = mstohz(acb->xs->timeout); 1004 /* start expire timer */ 1005 if (timeout == 0) 1006 timeout = 1; 1007 callout_reset(&xs->xs_callout, timeout, 1008 osiop_timeout, acb); 1009 } 1010 #ifdef OSIOP_DEBUG 1011 if (osiop_debug & DEBUG_DISC && 1012 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1013 printf("ACK! osiop was busy at start: " 1014 "script %p dsa %p active %d\n", 1015 sc->sc_script, acb->ds, sc->sc_active); 1016 #ifdef DDB 1017 #if 0 1018 Debugger(); 1019 #endif 1020 #endif 1021 } 1022 #endif 1023 if (TAILQ_EMPTY(&sc->nexus_list)) { 1024 if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) 1025 printf("%s: osiop_select while connected?\n", 1026 sc->sc_dev.dv_xname); 1027 osiop_write_4(sc, OSIOP_TEMP, 0); 1028 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1029 osiop_write_4(sc, OSIOP_DSA, 1030 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1031 osiop_write_4(sc, OSIOP_DSP, 1032 sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); 1033 OSIOP_TRACE('s', 1, 0, 0); 1034 } else { 1035 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1036 osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); 1037 OSIOP_TRACE('s', 2, 0, 0); 1038 } else { 1039 OSIOP_TRACE('s', 3, 1040 osiop_read_1(sc, OSIOP_ISTAT), 0); 1041 } 1042 } 1043 #ifdef OSIOP_DEBUG 1044 osiopstarts++; 1045 #endif 1046 } 1047 1048 /* 1049 * Process a DMA or SCSI interrupt from the 53C710 SIOP 1050 */ 1051 1052 int 1053 osiop_checkintr(struct osiop_softc *sc, uint8_t istat, uint8_t dstat, 1054 uint8_t sstat0, int *status) 1055 { 1056 struct osiop_acb *acb = sc->sc_nexus; 1057 struct osiop_ds *ds = NULL; /* XXX */ 1058 bus_dmamap_t dsdma = sc->sc_dsdma; 1059 bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; 1060 int target = 0; 1061 int dfifo, dbc, intcode, sstat1; 1062 1063 dfifo = osiop_read_1(sc, OSIOP_DFIFO); 1064 dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; 1065 sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); 1066 osiop_write_1(sc, OSIOP_CTEST8, 1067 osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); 1068 while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != 1069 OSIOP_CTEST1_FMT) 1070 ; 1071 osiop_write_1(sc, OSIOP_CTEST8, 1072 osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); 1073 intcode = osiop_read_4(sc, OSIOP_DSPS); 1074 #ifdef OSIOP_DEBUG 1075 osiopints++; 1076 if (osiop_read_4(sc, OSIOP_DSP) != 0 && 1077 (osiop_read_4(sc, OSIOP_DSP) < scraddr || 1078 osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { 1079 printf("%s: dsp not within script dsp %x scripts %lx:%lx", 1080 sc->sc_dev.dv_xname, 1081 osiop_read_4(sc, OSIOP_DSP), 1082 scraddr, scraddr + sizeof(osiop_script)); 1083 printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); 1084 #ifdef DDB 1085 Debugger(); 1086 #endif 1087 } 1088 #endif 1089 OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? 1090 intcode & 0xff : sstat0); 1091 1092 if (acb != NULL) { /* XXX */ 1093 ds = acb->ds; 1094 bus_dmamap_sync(sc->sc_dmat, dsdma, 1095 acb->dsoffset, sizeof(struct osiop_ds), 1096 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1097 #ifdef OSIOP_DEBUG 1098 if (acb->status != ACB_S_ACTIVE) 1099 printf("osiop_checkintr: acb not active (status %d)\n", 1100 acb->status); 1101 #endif 1102 } 1103 1104 1105 if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { 1106 /* Normal completion status, or check condition */ 1107 struct osiop_tinfo *ti; 1108 1109 if (acb == NULL) { 1110 printf("%s: COMPLETE with no active command?\n", 1111 sc->sc_dev.dv_xname); 1112 goto bad_phase; 1113 } 1114 #ifdef OSIOP_DEBUG 1115 if (osiop_read_4(sc, OSIOP_DSA) != 1116 dsdma->dm_segs[0].ds_addr + acb->dsoffset) { 1117 printf("osiop: invalid dsa: %x %lx\n", 1118 osiop_read_4(sc, OSIOP_DSA), 1119 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1120 panic("*** osiop DSA invalid ***"); 1121 } 1122 #endif 1123 target = acb->xs->xs_periph->periph_target; 1124 ti = &sc->sc_tinfo[target]; 1125 if (ti->state == NEG_WAITS) { 1126 if (ds->msgbuf[1] == MSG_INVALID) 1127 printf("%s: target %d ignored sync request\n", 1128 sc->sc_dev.dv_xname, target); 1129 else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) 1130 printf("%s: target %d rejected sync request\n", 1131 sc->sc_dev.dv_xname, target); 1132 ti->period = 0; 1133 ti->offset = 0; 1134 osiop_update_xfer_mode(sc, target); 1135 ti->state = NEG_DONE; 1136 } 1137 #ifdef OSIOP_DEBUG 1138 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1139 #if 0 1140 printf("ACK! osiop was busy at end: " 1141 "script %p dsa %p\n", &osiop_script, ds); 1142 #ifdef DDB 1143 Debugger(); 1144 #endif 1145 #endif 1146 } 1147 if (ds->msgbuf[0] != MSG_CMDCOMPLETE) 1148 printf("%s: message was not COMMAND COMPLETE: %02x\n", 1149 sc->sc_dev.dv_xname, ds->msgbuf[0]); 1150 #endif 1151 if (!TAILQ_EMPTY(&sc->nexus_list)) 1152 osiop_write_1(sc, OSIOP_DCNTL, 1153 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1154 *status = ds->stat[0]; 1155 acb->status = ACB_S_DONE; 1156 return (1); 1157 } 1158 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { 1159 if (acb == NULL) { 1160 printf("%s: sync message with no active command?\n", 1161 sc->sc_dev.dv_xname); 1162 goto bad_phase; 1163 } 1164 target = acb->xs->xs_periph->periph_target; 1165 if (ds->msgbuf[1] == MSG_EXTENDED && 1166 ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1167 ds->msgbuf[3] == MSG_EXT_SDTR) { 1168 struct osiop_tinfo *ti = &sc->sc_tinfo[target]; 1169 #ifdef OSIOP_DEBUG 1170 if (osiopsync_debug) 1171 printf("sync msg in: " 1172 "%02x %02x %02x %02x %02x %02x\n", 1173 ds->msgbuf[0], ds->msgbuf[1], 1174 ds->msgbuf[2], ds->msgbuf[3], 1175 ds->msgbuf[4], ds->msgbuf[5]); 1176 #endif 1177 ti->period = ds->msgbuf[4]; 1178 ti->offset = ds->msgbuf[5]; 1179 ti->sxfer = 0; 1180 ti->sbcl = 0; 1181 if (ds->msgbuf[5] != 0) 1182 scsi_period_to_osiop(sc, target); 1183 osiop_update_xfer_mode(sc, target); 1184 1185 bus_dmamap_sync(sc->sc_dmat, dsdma, 1186 acb->dsoffset, sizeof(struct osiop_ds), 1187 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1188 osiop_write_1(sc, OSIOP_SXFER, ti->sxfer); 1189 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1190 if (ti->state == NEG_WAITS) { 1191 ti->state = NEG_DONE; 1192 osiop_write_4(sc, OSIOP_DSP, 1193 scraddr + Ent_clear_ack); 1194 return (0); 1195 } 1196 osiop_write_1(sc, OSIOP_DCNTL, 1197 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1198 ti->state = NEG_DONE; 1199 return (0); 1200 } 1201 /* XXX - not SDTR message */ 1202 } 1203 if (sstat0 & OSIOP_SSTAT0_M_A) { 1204 /* Phase mismatch */ 1205 #ifdef OSIOP_DEBUG 1206 osiopphmm++; 1207 #endif 1208 if (acb == NULL) { 1209 printf("%s: Phase mismatch with no active command?\n", 1210 sc->sc_dev.dv_xname); 1211 goto bad_phase; 1212 } 1213 if (acb->datalen > 0) { 1214 int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; 1215 if (sstat1 & OSIOP_SSTAT1_ORF) 1216 adjust++; 1217 if (sstat1 & OSIOP_SSTAT1_OLF) 1218 adjust++; 1219 acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; 1220 acb->curlen = dbc + adjust; 1221 #ifdef OSIOP_DEBUG 1222 if (osiop_debug & DEBUG_DISC) { 1223 printf("Phase mismatch: curaddr %lx " 1224 "curlen %lx dfifo %x dbc %x sstat1 %x " 1225 "adjust %x sbcl %x starts %d acb %p\n", 1226 acb->curaddr, acb->curlen, dfifo, 1227 dbc, sstat1, adjust, 1228 osiop_read_1(sc, OSIOP_SBCL), 1229 osiopstarts, acb); 1230 if (ds->data[1].count != 0) { 1231 int i; 1232 for (i = 0; ds->data[i].count != 0; i++) 1233 printf("chain[%d] " 1234 "addr %x len %x\n", i, 1235 ds->data[i].addr, 1236 ds->data[i].count); 1237 } 1238 bus_dmamap_sync(sc->sc_dmat, dsdma, 1239 acb->dsoffset, sizeof(struct osiop_ds), 1240 BUS_DMASYNC_PREREAD | 1241 BUS_DMASYNC_PREWRITE); 1242 } 1243 #endif 1244 } 1245 #ifdef OSIOP_DEBUG 1246 OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), 1247 osiop_read_4(sc, OSIOP_DSP) >> 8, 1248 osiop_read_4(sc, OSIOP_DSP)); 1249 if (osiop_debug & DEBUG_PHASE) 1250 printf("Phase mismatch: %x dsp +%lx dcmd %x\n", 1251 osiop_read_1(sc, OSIOP_SBCL), 1252 osiop_read_4(sc, OSIOP_DSP) - scraddr, 1253 osiop_read_4(sc, OSIOP_DBC)); 1254 #endif 1255 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { 1256 printf("Phase mismatch: " 1257 "REQ not asserted! %02x dsp %x\n", 1258 osiop_read_1(sc, OSIOP_SBCL), 1259 osiop_read_4(sc, OSIOP_DSP)); 1260 #if defined(OSIOP_DEBUG) && defined(DDB) 1261 /*Debugger(); XXX is*/ 1262 #endif 1263 } 1264 switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { 1265 case DATA_OUT_PHASE: 1266 case DATA_IN_PHASE: 1267 case STATUS_PHASE: 1268 case COMMAND_PHASE: 1269 case MSG_IN_PHASE: 1270 case MSG_OUT_PHASE: 1271 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1272 break; 1273 default: 1274 printf("%s: invalid phase\n", sc->sc_dev.dv_xname); 1275 goto bad_phase; 1276 } 1277 return (0); 1278 } 1279 if (sstat0 & OSIOP_SSTAT0_STO) { 1280 /* Select timed out */ 1281 if (acb == NULL) { 1282 printf("%s: Select timeout with no active command?\n", 1283 sc->sc_dev.dv_xname); 1284 goto bad_phase; 1285 } 1286 #ifdef OSIOP_DEBUG 1287 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1288 printf("ACK! osiop was busy at timeout: " 1289 "script %p dsa %lx\n", sc->sc_script, 1290 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1291 printf(" sbcl %x sdid %x " 1292 "istat %x dstat %x sstat0 %x\n", 1293 osiop_read_1(sc, OSIOP_SBCL), 1294 osiop_read_1(sc, OSIOP_SDID), 1295 istat, dstat, sstat0); 1296 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { 1297 printf("Yikes, it's not busy now!\n"); 1298 #if 0 1299 *status = SCSI_OSIOP_NOSTATUS; 1300 if (!TAILQ_EMPTY(&sc->nexus_list)) 1301 osiop_write_4(sc, OSIOP_DSP, 1302 scraddr + Ent_wait_reselect); 1303 return (1); 1304 #endif 1305 } 1306 #if 0 1307 osiop_write_1(sc, OSIOP_DCNTL, 1308 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1309 #endif 1310 #ifdef DDB 1311 Debugger(); 1312 #endif 1313 return (0); 1314 } 1315 #endif 1316 acb->status = ACB_S_DONE; 1317 *status = SCSI_OSIOP_NOSTATUS; 1318 acb->xs->error = XS_SELTIMEOUT; 1319 if (!TAILQ_EMPTY(&sc->nexus_list)) 1320 osiop_write_4(sc, OSIOP_DSP, 1321 scraddr + Ent_wait_reselect); 1322 return (1); 1323 } 1324 if (acb != NULL) 1325 target = acb->xs->xs_periph->periph_target; 1326 else 1327 target = sc->sc_id; 1328 if (sstat0 & OSIOP_SSTAT0_UDC) { 1329 printf("%s: target %d disconnected unexpectedly", 1330 sc->sc_dev.dv_xname, target); 1331 if (acb == NULL) 1332 printf("with no active command?"); 1333 printf("\n"); 1334 #if 0 1335 osiop_abort(sc, "osiop_chkintr"); 1336 #endif 1337 *status = SCSI_CHECK; 1338 if (!TAILQ_EMPTY(&sc->nexus_list)) 1339 osiop_write_4(sc, OSIOP_DSP, 1340 scraddr + Ent_wait_reselect); 1341 return (acb != NULL); 1342 } 1343 if (dstat & OSIOP_DSTAT_SIR && 1344 (intcode == A_int_disc || intcode == A_int_disc_wodp)) { 1345 /* Disconnect */ 1346 if (acb == NULL) { 1347 printf("%s: Disconnect with no active command?\n", 1348 sc->sc_dev.dv_xname); 1349 return (0); 1350 } 1351 #ifdef OSIOP_DEBUG 1352 if (osiop_debug & DEBUG_DISC) { 1353 printf("%s: ID %02x disconnected TEMP %x (+%lx) " 1354 "curaddr %lx curlen %lx buf %x len %x dfifo %x " 1355 "dbc %x sstat1 %x starts %d acb %p\n", 1356 sc->sc_dev.dv_xname, 1 << target, 1357 osiop_read_4(sc, OSIOP_TEMP), 1358 (osiop_read_4(sc, OSIOP_TEMP) != 0) ? 1359 osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, 1360 acb->curaddr, acb->curlen, 1361 ds->data[0].addr, ds->data[0].count, 1362 dfifo, dbc, sstat1, osiopstarts, acb); 1363 bus_dmamap_sync(sc->sc_dmat, dsdma, 1364 acb->dsoffset, sizeof(struct osiop_ds), 1365 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1366 } 1367 #endif 1368 /* 1369 * XXXX need to update curaddr/curlen to reflect 1370 * current data transferred. If device disconnected in 1371 * the middle of a DMA block, they should already be set 1372 * by the phase change interrupt. If the disconnect 1373 * occurs on a DMA block boundary, we have to figure out 1374 * which DMA block it was. 1375 */ 1376 if (acb->datalen > 0 && 1377 osiop_read_4(sc, OSIOP_TEMP) != 0) { 1378 long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; 1379 1380 if (acb->curlen != 0 && 1381 acb->curlen != ds->data[0].count) 1382 printf("%s: curaddr/curlen already set? " 1383 "n %lx iob %lx/%lx chain[0] %x/%x\n", 1384 sc->sc_dev.dv_xname, n, 1385 acb->curaddr, acb->curlen, 1386 ds->data[0].addr, ds->data[0].count); 1387 if (n < Ent_datain) 1388 n = (n - Ent_dataout) / 16; 1389 else 1390 n = (n - Ent_datain) / 16; 1391 if (n < 0 || n >= OSIOP_NSG) 1392 printf("TEMP invalid %ld\n", n); 1393 else { 1394 acb->curaddr = ds->data[n].addr; 1395 acb->curlen = ds->data[n].count; 1396 } 1397 #ifdef OSIOP_DEBUG 1398 if (osiop_debug & DEBUG_DISC) { 1399 printf("%s: TEMP offset %ld", 1400 sc->sc_dev.dv_xname, n); 1401 printf(" curaddr %lx curlen %lx\n", 1402 acb->curaddr, acb->curlen); 1403 } 1404 #endif 1405 } 1406 /* 1407 * If data transfer was interrupted by disconnect, curaddr 1408 * and curlen should reflect the point of interruption. 1409 * Adjust the DMA chain so that the data transfer begins 1410 * at the appropriate place upon reselection. 1411 * XXX This should only be done on save data pointer message? 1412 */ 1413 if (acb->curlen > 0) { 1414 int i, j; 1415 1416 #ifdef OSIOP_DEBUG 1417 if (osiop_debug & DEBUG_DISC) 1418 printf("%s: adjusting DMA chain\n", 1419 sc->sc_dev.dv_xname); 1420 if (intcode == A_int_disc_wodp) 1421 printf("%s: ID %02x disconnected " 1422 "without Save Data Pointers\n", 1423 sc->sc_dev.dv_xname, 1 << target); 1424 #endif 1425 for (i = 0; i < OSIOP_NSG; i++) { 1426 if (ds->data[i].count == 0) 1427 break; 1428 if (acb->curaddr >= ds->data[i].addr && 1429 acb->curaddr < 1430 (ds->data[i].addr + ds->data[i].count)) 1431 break; 1432 } 1433 if (i >= OSIOP_NSG || ds->data[i].count == 0) { 1434 printf("couldn't find saved data pointer: " 1435 "curaddr %lx curlen %lx i %d\n", 1436 acb->curaddr, acb->curlen, i); 1437 #ifdef DDB 1438 Debugger(); 1439 #endif 1440 } 1441 #ifdef OSIOP_DEBUG 1442 if (osiop_debug & DEBUG_DISC) 1443 printf(" chain[0]: %x/%x -> %lx/%lx\n", 1444 ds->data[0].addr, ds->data[0].count, 1445 acb->curaddr, acb->curlen); 1446 #endif 1447 ds->data[0].addr = acb->curaddr; 1448 ds->data[0].count = acb->curlen; 1449 for (j = 1, i = i + 1; 1450 i < OSIOP_NSG && ds->data[i].count > 0; 1451 i++, j++) { 1452 #ifdef OSIOP_DEBUG 1453 if (osiop_debug & DEBUG_DISC) 1454 printf(" chain[%d]: %x/%x -> %x/%x\n", 1455 j, ds->data[j].addr, 1456 ds->data[j].count, 1457 ds->data[i].addr, 1458 ds->data[i].count); 1459 #endif 1460 ds->data[j].addr = ds->data[i].addr; 1461 ds->data[j].count = ds->data[i].count; 1462 } 1463 if (j < OSIOP_NSG) { 1464 ds->data[j].addr = 0; 1465 ds->data[j].count = 0; 1466 } 1467 bus_dmamap_sync(sc->sc_dmat, dsdma, 1468 acb->dsoffset, sizeof(struct osiop_ds), 1469 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1470 } 1471 sc->sc_tinfo[target].dconns++; 1472 /* 1473 * add nexus to waiting list 1474 * clear nexus 1475 * try to start another command for another target/lun 1476 */ 1477 acb->intstat = sc->sc_flags & OSIOP_INTSOFF; 1478 TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); 1479 sc->sc_nexus = NULL; /* no current device */ 1480 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); 1481 /* XXXX start another command ? */ 1482 if (!TAILQ_EMPTY(&sc->ready_list)) 1483 osiop_sched(sc); 1484 return (0); 1485 } 1486 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { 1487 int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; 1488 int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; 1489 #ifdef OSIOP_DEBUG 1490 uint8_t resmsg; 1491 #endif 1492 1493 /* Reconnect */ 1494 /* XXXX save current SBCL */ 1495 sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); 1496 #ifdef OSIOP_DEBUG 1497 if (osiop_debug & DEBUG_DISC) 1498 printf("%s: target ID %02x reselected dsps %x\n", 1499 sc->sc_dev.dv_xname, reselid, intcode); 1500 resmsg = osiop_read_1(sc, OSIOP_SFBR); 1501 if (!MSG_ISIDENTIFY(resmsg)) 1502 printf("%s: Reselect message in was not identify: " 1503 "%02x\n", sc->sc_dev.dv_xname, resmsg); 1504 #endif 1505 if (sc->sc_nexus != NULL) { 1506 struct scsipi_periph *periph = 1507 sc->sc_nexus->xs->xs_periph; 1508 #ifdef OSIOP_DEBUG 1509 if (osiop_debug & DEBUG_DISC) 1510 printf("%s: reselect ID %02x w/active\n", 1511 sc->sc_dev.dv_xname, reselid); 1512 #endif 1513 TAILQ_INSERT_HEAD(&sc->ready_list, 1514 sc->sc_nexus, chain); 1515 sc->sc_tinfo[periph->periph_target].lubusy 1516 &= ~(1 << periph->periph_lun); 1517 sc->sc_active--; 1518 } 1519 /* 1520 * locate acb of reselecting device 1521 * set sc->sc_nexus to acb 1522 */ 1523 TAILQ_FOREACH(acb, &sc->nexus_list, chain) { 1524 struct scsipi_periph *periph = acb->xs->xs_periph; 1525 if (reselid != periph->periph_target || 1526 reselun != periph->periph_lun) { 1527 continue; 1528 } 1529 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1530 sc->sc_nexus = acb; 1531 sc->sc_flags |= acb->intstat; 1532 acb->intstat = 0; 1533 osiop_write_4(sc, OSIOP_DSA, 1534 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1535 osiop_write_1(sc, OSIOP_SXFER, 1536 sc->sc_tinfo[reselid].sxfer); 1537 osiop_write_1(sc, OSIOP_SBCL, 1538 sc->sc_tinfo[reselid].sbcl); 1539 break; 1540 } 1541 if (acb == NULL) { 1542 printf("%s: target ID %02x reselect nexus_list %p\n", 1543 sc->sc_dev.dv_xname, reselid, 1544 TAILQ_FIRST(&sc->nexus_list)); 1545 panic("unable to find reselecting device"); 1546 } 1547 1548 osiop_write_4(sc, OSIOP_TEMP, 0); 1549 osiop_write_1(sc, OSIOP_DCNTL, 1550 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1551 return (0); 1552 } 1553 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { 1554 #ifdef OSIOP_DEBUG 1555 uint8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); 1556 1557 /* reselect was interrupted (by Sig_P or select) */ 1558 if (osiop_debug & DEBUG_DISC || 1559 (ctest2 & OSIOP_CTEST2_SIGP) == 0) 1560 printf("%s: reselect interrupted (Sig_P?) " 1561 "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1562 sc->sc_dev.dv_xname, 1563 osiop_read_1(sc, OSIOP_SCNTL1), ctest2, 1564 osiop_read_1(sc, OSIOP_SFBR), istat, 1565 osiop_read_1(sc, OSIOP_ISTAT)); 1566 #endif 1567 /* XXX assumes it was not select */ 1568 if (sc->sc_nexus == NULL) { 1569 #ifdef OSIOP_DEBUG 1570 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1571 sc->sc_dev.dv_xname); 1572 #if 0 1573 osiop_dump(sc); 1574 #ifdef DDB 1575 Debugger(); 1576 #endif 1577 #endif 1578 #endif 1579 osiop_write_1(sc, OSIOP_DCNTL, 1580 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1581 return (0); 1582 } 1583 target = sc->sc_nexus->xs->xs_periph->periph_target; 1584 osiop_write_4(sc, OSIOP_TEMP, 0); 1585 osiop_write_4(sc, OSIOP_DSA, 1586 dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); 1587 osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[target].sxfer); 1588 osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[target].sbcl); 1589 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); 1590 return (0); 1591 } 1592 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { 1593 /* Unrecognized message in byte */ 1594 if (acb == NULL) { 1595 printf("%s: Bad message-in with no active command?\n", 1596 sc->sc_dev.dv_xname); 1597 goto bad_phase; 1598 } 1599 printf("%s: Unrecognized message in data " 1600 "sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname, 1601 osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], 1602 osiop_read_1(sc, OSIOP_SBCL)); 1603 /* what should be done here? */ 1604 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1605 bus_dmamap_sync(sc->sc_dmat, dsdma, 1606 acb->dsoffset, sizeof(struct osiop_ds), 1607 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1608 return (0); 1609 } 1610 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { 1611 /* Status phase wasn't followed by message in phase? */ 1612 printf("%s: Status phase not followed by message in phase? " 1613 "sbcl %x sbdl %x\n", sc->sc_dev.dv_xname, 1614 osiop_read_1(sc, OSIOP_SBCL), 1615 osiop_read_1(sc, OSIOP_SBDL)); 1616 if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { 1617 /* It is now, just continue the script? */ 1618 osiop_write_1(sc, OSIOP_DCNTL, 1619 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1620 return (0); 1621 } 1622 } 1623 if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { 1624 printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1625 intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1626 osiop_read_1(sc, OSIOP_SBCL)); 1627 osiop_reset(sc); 1628 *status = SCSI_OSIOP_NOSTATUS; 1629 return (0); /* osiop_reset has cleaned up */ 1630 } 1631 if (sstat0 & OSIOP_SSTAT0_SGE) 1632 printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname); 1633 if (sstat0 & OSIOP_SSTAT0_PAR) 1634 printf("%s: Parity Error\n", sc->sc_dev.dv_xname); 1635 if (dstat & OSIOP_DSTAT_IID) 1636 printf("%s: Invalid instruction detected\n", 1637 sc->sc_dev.dv_xname); 1638 bad_phase: 1639 /* 1640 * temporary panic for unhandled conditions 1641 * displays various things about the 53C710 status and registers 1642 * then panics. 1643 * XXXX need to clean this up to print out the info, reset, and continue 1644 */ 1645 printf("osiop_chkintr: target %x ds %p\n", target, ds); 1646 printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, 1647 sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset, 1648 osiop_read_4(sc, OSIOP_DSP), 1649 osiop_read_4(sc, OSIOP_DBC)); 1650 printf("osiop_chkintr: istat %x dstat %x sstat0 %x " 1651 "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1652 istat, dstat, sstat0, intcode, 1653 osiop_read_4(sc, OSIOP_DSA), 1654 osiop_read_1(sc, OSIOP_SBCL), 1655 ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1656 osiop_read_1(sc, OSIOP_SFBR)); 1657 #ifdef OSIOP_DEBUG 1658 if (osiop_debug & DEBUG_DMA) 1659 panic("osiop_chkintr: **** temp ****"); 1660 #endif 1661 #ifdef DDB 1662 Debugger(); 1663 #endif 1664 osiop_reset(sc); /* hard reset */ 1665 *status = SCSI_OSIOP_NOSTATUS; 1666 acb->status = ACB_S_DONE; 1667 return (0); /* osiop_reset cleaned up */ 1668 } 1669 1670 void 1671 osiop_select(struct osiop_softc *sc) 1672 { 1673 struct osiop_acb *acb = sc->sc_nexus; 1674 1675 #ifdef OSIOP_DEBUG 1676 if (osiop_debug & DEBUG_CMD) 1677 printf("%s: select ", sc->sc_dev.dv_xname); 1678 #endif 1679 1680 if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) { 1681 sc->sc_flags |= OSIOP_INTSOFF; 1682 sc->sc_flags &= ~OSIOP_INTDEFER; 1683 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1684 osiop_write_1(sc, OSIOP_SIEN, 0); 1685 osiop_write_1(sc, OSIOP_DIEN, 0); 1686 } 1687 #if 0 1688 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 1689 sc->sc_flags &= ~OSIOP_INTSOFF; 1690 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1691 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1692 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1693 } 1694 #endif 1695 } 1696 #ifdef OSIOP_DEBUG 1697 if (osiop_debug & DEBUG_CMD) 1698 printf("osiop_select: target %x cmd %02x ds %p\n", 1699 acb->xs->xs_periph->periph_target, 1700 acb->xs->cmd->opcode, sc->sc_nexus->ds); 1701 #endif 1702 1703 osiop_start(sc); 1704 1705 return; 1706 } 1707 1708 /* 1709 * 53C710 interrupt handler 1710 */ 1711 1712 void 1713 osiop_intr(struct osiop_softc *sc) 1714 { 1715 int status, s; 1716 uint8_t istat, dstat, sstat0; 1717 1718 s = splbio(); 1719 1720 istat = sc->sc_istat; 1721 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 1722 splx(s); 1723 return; 1724 } 1725 1726 /* Got a valid interrupt on this device; set by MD handler */ 1727 dstat = sc->sc_dstat; 1728 sstat0 = sc->sc_sstat0; 1729 sc->sc_istat = 0; 1730 #ifdef OSIOP_DEBUG 1731 if (!sc->sc_active) { 1732 /* XXX needs sync */ 1733 printf("%s: spurious interrupt? " 1734 "istat %x dstat %x sstat0 %x nexus %p status %x\n", 1735 sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus, 1736 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); 1737 } 1738 #endif 1739 1740 #ifdef OSIOP_DEBUG 1741 if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { 1742 /* XXX needs sync */ 1743 printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " 1744 "sbcl %x dsp %x dcmd %x sts %x msg %x\n", 1745 sc->sc_dev.dv_xname, 1746 istat, dstat, sstat0, 1747 osiop_read_4(sc, OSIOP_DSPS), 1748 osiop_read_1(sc, OSIOP_SBCL), 1749 osiop_read_4(sc, OSIOP_DSP), 1750 osiop_read_4(sc, OSIOP_DBC), 1751 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, 1752 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); 1753 } 1754 #endif 1755 if (sc->sc_flags & OSIOP_INTDEFER) { 1756 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 1757 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1758 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1759 } 1760 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 1761 #if 0 1762 if (status == SCSI_OSIOP_NOSTATUS) 1763 printf("osiop_intr: no valid status \n"); 1764 #endif 1765 if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != 1766 OSIOP_INTSOFF) { 1767 #if 0 1768 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1769 struct scsipi_periph *periph; 1770 1771 periph = sc->sc_nexus->xs->xs_periph; 1772 printf("%s: SCSI bus busy at completion" 1773 " targ %d sbcl %02x sfbr %x lcrc " 1774 "%02x dsp +%x\n", sc->sc_dev.dv_xname, 1775 periph->periphtarget, 1776 osiop_read_1(sc, OSIOP_SBCL), 1777 osiop_read_1(sc, OSIOP_SFBR), 1778 osiop_read_1(sc, OSIOP_LCRC), 1779 osiop_read_4(sc, OSIOP_DSP) - 1780 sc->sc_scrdma->dm_segs[0].ds_addr); 1781 } 1782 #endif 1783 osiop_scsidone(sc->sc_nexus, status); 1784 } 1785 } 1786 splx(s); 1787 } 1788 1789 void 1790 osiop_update_xfer_mode(struct osiop_softc *sc, int target) 1791 { 1792 struct osiop_tinfo *tinfo = &sc->sc_tinfo[target]; 1793 struct scsipi_xfer_mode xm; 1794 1795 xm.xm_target = target; 1796 xm.xm_mode = 0; 1797 xm.xm_period = 0; 1798 xm.xm_offset = 0; 1799 1800 if (tinfo->period) { 1801 xm.xm_mode |= PERIPH_CAP_SYNC; 1802 xm.xm_period = tinfo->period; 1803 xm.xm_offset = tinfo->offset; 1804 } 1805 1806 scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 1807 } 1808 1809 void 1810 scsi_period_to_osiop(struct osiop_softc *sc, int target) 1811 { 1812 int period, offset, sxfer, sbcl; 1813 1814 period = sc->sc_tinfo[target].period; 1815 offset = sc->sc_tinfo[target].offset; 1816 for (sbcl = 1; sbcl < 4; sbcl++) { 1817 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1818 if (sxfer >= 0 && sxfer <= 7) 1819 break; 1820 } 1821 if (sbcl > 3) { 1822 printf("osiop sync: unable to compute sync params " 1823 "for period %d ns\n", period * 4); 1824 /* 1825 * XXX need to pick a value we can do and renegotiate 1826 */ 1827 sxfer = sbcl = 0; 1828 } else { 1829 sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? 1830 offset : OSIOP_MAX_OFFSET); 1831 #ifdef DEBUG_SYNC 1832 printf("osiop sync: params for period %dns: sxfer %x sbcl %x", 1833 period * 4, sxfer, sbcl); 1834 printf(" actual period %dns\n", 1835 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1836 #endif 1837 } 1838 sc->sc_tinfo[target].sxfer = sxfer; 1839 sc->sc_tinfo[target].sbcl = sbcl; 1840 #ifdef DEBUG_SYNC 1841 printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); 1842 #endif 1843 } 1844 1845 void 1846 osiop_timeout(void *arg) 1847 { 1848 struct osiop_acb *acb = arg; 1849 struct scsipi_xfer *xs = acb->xs; 1850 struct osiop_softc *sc = acb->sc; 1851 int s; 1852 1853 scsipi_printaddr(xs->xs_periph); 1854 printf("command timeout\n"); 1855 1856 s = splbio(); 1857 /* reset the scsi bus */ 1858 osiop_resetbus(sc); 1859 1860 /* deactivate callout */ 1861 callout_stop(&xs->xs_callout); 1862 acb->flags |= ACB_F_TIMEOUT; 1863 osiop_reset(sc); 1864 splx(s); 1865 return; 1866 } 1867 1868 #ifdef OSIOP_DEBUG 1869 1870 #if OSIOP_TRACE_SIZE 1871 void 1872 osiop_dump_trace(void) 1873 { 1874 int i; 1875 1876 printf("osiop trace: next index %d\n", osiop_trix); 1877 i = osiop_trix; 1878 do { 1879 printf("%3d: '%c' %02x %02x %02x\n", i, 1880 osiop_trbuf[i], osiop_trbuf[i + 1], 1881 osiop_trbuf[i + 2], osiop_trbuf[i + 3]); 1882 i = (i + 4) & (OSIOP_TRACE_SIZE - 1); 1883 } while (i != osiop_trix); 1884 } 1885 #endif 1886 1887 void 1888 osiop_dump_acb(struct osiop_acb *acb) 1889 { 1890 uint8_t *b; 1891 int i; 1892 1893 printf("acb@%p ", acb); 1894 if (acb->xs == NULL) { 1895 printf("<unused>\n"); 1896 return; 1897 } 1898 1899 b = (uint8_t *)&acb->xs->cmd; 1900 printf("(%d:%d) status %2x cmdlen %2ld cmd ", 1901 acb->xs->xs_periph->periph_target, 1902 acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen); 1903 for (i = acb->cmdlen; i > 0; i--) 1904 printf(" %02x", *b++); 1905 printf("\n"); 1906 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1907 acb->xs->datalen); 1908 printf("va %p:%lx ", acb->data, acb->datalen); 1909 printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); 1910 } 1911 1912 void 1913 osiop_dump(struct osiop_softc *sc) 1914 { 1915 struct osiop_acb *acb; 1916 int i, s; 1917 1918 s = splbio(); 1919 #if OSIOP_TRACE_SIZE 1920 osiop_dump_trace(); 1921 #endif 1922 printf("%s@%p istat %02x\n", 1923 sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT)); 1924 if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { 1925 printf("Free list:\n"); 1926 while (acb) { 1927 osiop_dump_acb(acb); 1928 acb = TAILQ_NEXT(acb, chain); 1929 } 1930 } 1931 if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { 1932 printf("Ready list:\n"); 1933 while (acb) { 1934 osiop_dump_acb(acb); 1935 acb = TAILQ_NEXT(acb, chain); 1936 } 1937 } 1938 if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 1939 printf("Nexus list:\n"); 1940 while (acb) { 1941 osiop_dump_acb(acb); 1942 acb = TAILQ_NEXT(acb, chain); 1943 } 1944 } 1945 if (sc->sc_nexus) { 1946 printf("Nexus:\n"); 1947 osiop_dump_acb(sc->sc_nexus); 1948 } 1949 for (i = 0; i < OSIOP_NTGT; i++) { 1950 if (sc->sc_tinfo[i].cmds > 2) { 1951 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1952 i, sc->sc_tinfo[i].cmds, 1953 sc->sc_tinfo[i].dconns, 1954 sc->sc_tinfo[i].lubusy); 1955 } 1956 } 1957 splx(s); 1958 } 1959 #endif 1960
Indexes created Wed Sep 24 05:09:52 GMT 2025