1 /* $NetBSD: osiop.c,v 1.23 2005/02/27 00:27:02 perry 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@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 1.23 2005/02/27 00:27:02 perry 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 (caddr_t *)&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, (caddr_t *)&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 = sc->sc_dev.dv_cfdata->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 /* XXX How much size is required for each command block? */ 281 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 282 0, BUS_DMA_NOWAIT, &acb->cmddma); 283 if (err) { 284 printf(": failed to create cmddma map, err=%d\n", err); 285 return; 286 } 287 err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, 288 OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); 289 if (err) { 290 printf(": failed to create datadma map, err=%d\n", 291 err); 292 return; 293 } 294 295 acb->sc = sc; 296 acb->ds = &sc->sc_ds[i]; 297 acb->dsoffset = sizeof(struct osiop_ds) * i; 298 299 dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; 300 acb->ds->id.addr = dsa + OSIOP_DSIDOFF; 301 acb->ds->status.count = 1; 302 acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; 303 acb->ds->msg.count = 1; 304 acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; 305 acb->ds->msgin.count = 1; 306 acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; 307 acb->ds->extmsg.count = 1; 308 acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; 309 acb->ds->synmsg.count = 3; 310 acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; 311 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 312 313 acb++; 314 } 315 316 printf(": NCR53C710 rev %d, %dMHz, SCSI ID %d\n", 317 osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq, sc->sc_id); 318 319 /* 320 * Initialize all 321 */ 322 osiop_init(sc); 323 324 /* 325 * Fill in the adapter. 326 */ 327 sc->sc_adapter.adapt_dev = &sc->sc_dev; 328 sc->sc_adapter.adapt_nchannels = 1; 329 sc->sc_adapter.adapt_openings = OSIOP_NACB; 330 sc->sc_adapter.adapt_max_periph = 1; 331 sc->sc_adapter.adapt_ioctl = NULL; 332 sc->sc_adapter.adapt_minphys = osiop_minphys; 333 sc->sc_adapter.adapt_request = osiop_scsipi_request; 334 335 /* 336 * Fill in the channel. 337 */ 338 sc->sc_channel.chan_adapter = &sc->sc_adapter; 339 sc->sc_channel.chan_bustype = &scsi_bustype; 340 sc->sc_channel.chan_channel = 0; 341 sc->sc_channel.chan_ntargets = OSIOP_NTGT; 342 sc->sc_channel.chan_nluns = 8; 343 sc->sc_channel.chan_id = sc->sc_id; 344 345 /* 346 * Now try to attach all the sub devices. 347 */ 348 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 349 } 350 351 /* 352 * default minphys routine for osiop based controllers 353 */ 354 void 355 osiop_minphys(struct buf *bp) 356 { 357 358 if (bp->b_bcount > OSIOP_MAX_XFER) 359 bp->b_bcount = OSIOP_MAX_XFER; 360 minphys(bp); 361 } 362 363 /* 364 * used by specific osiop controller 365 * 366 */ 367 void 368 osiop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 369 void *arg) 370 { 371 struct scsipi_xfer *xs; 372 struct scsipi_periph *periph; 373 struct osiop_acb *acb; 374 struct osiop_softc *sc; 375 int err, flags, s; 376 377 sc = (struct osiop_softc *)chan->chan_adapter->adapt_dev; 378 379 switch (req) { 380 case ADAPTER_REQ_RUN_XFER: 381 xs = arg; 382 periph = xs->xs_periph; 383 flags = xs->xs_control; 384 385 /* XXXX ?? */ 386 if (flags & XS_CTL_DATA_UIO) 387 panic("osiop: scsi data uio requested"); 388 389 /* XXXX ?? */ 390 if (sc->sc_nexus && flags & XS_CTL_POLL) 391 #if 0 392 panic("osiop_scsicmd: busy"); 393 #else 394 printf("osiop_scsicmd: busy\n"); 395 #endif 396 397 s = splbio(); 398 acb = TAILQ_FIRST(&sc->free_list); 399 if (acb != NULL) { 400 TAILQ_REMOVE(&sc->free_list, acb, chain); 401 } 402 #ifdef DIAGNOSTIC 403 else { 404 scsipi_printaddr(periph); 405 printf("unable to allocate acb\n"); 406 panic("osiop_scsipi_request"); 407 } 408 #endif 409 410 acb->status = ACB_S_READY; 411 acb->xs = xs; 412 413 /* Setup DMA map for SCSI command buffer */ 414 err = bus_dmamap_load(sc->sc_dmat, acb->cmddma, 415 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 416 if (err) { 417 printf("%s: unable to load cmd DMA map: %d\n", 418 sc->sc_dev.dv_xname, err); 419 xs->error = XS_DRIVER_STUFFUP; 420 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 421 scsipi_done(xs); 422 splx(s); 423 return; 424 } 425 426 /* Setup DMA map for data buffer */ 427 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 428 err = bus_dmamap_load(sc->sc_dmat, acb->datadma, 429 xs->data, xs->datalen, NULL, 430 BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 431 ((xs->xs_control & XS_CTL_DATA_IN) ? 432 BUS_DMA_READ : BUS_DMA_WRITE)); 433 if (err) { 434 printf("%s: unable to load data DMA map: %d\n", 435 sc->sc_dev.dv_xname, err); 436 xs->error = XS_DRIVER_STUFFUP; 437 scsipi_done(xs); 438 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 439 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 440 splx(s); 441 return; 442 } 443 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 444 0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN) ? 445 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 446 } 447 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, xs->cmdlen, 448 BUS_DMASYNC_PREWRITE); 449 450 acb->cmdlen = xs->cmdlen; 451 acb->datalen = xs->datalen; 452 #ifdef OSIOP_DEBUG 453 acb->data = xs->data; 454 #endif 455 456 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 457 458 if (sc->sc_nexus == NULL) 459 osiop_sched(sc); 460 461 splx(s); 462 463 if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) 464 osiop_poll(sc, acb); 465 return; 466 467 case ADAPTER_REQ_GROW_RESOURCES: 468 return; 469 470 case ADAPTER_REQ_SET_XFER_MODE: 471 { 472 struct osiop_tinfo *ti; 473 struct scsipi_xfer_mode *xm = arg; 474 475 ti = &sc->sc_tinfo[xm->xm_target]; 476 477 if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 478 (ti->flags & TI_NOSYNC) == 0) 479 ti->state = NEG_INIT; 480 481 /* 482 * If we're not going to negotiate, send the 483 * notification now, since it won't happen later. 484 */ 485 if (ti->state == NEG_DONE) 486 osiop_update_xfer_mode(sc, xm->xm_target); 487 488 return; 489 } 490 } 491 } 492 493 void 494 osiop_poll(struct osiop_softc *sc, struct osiop_acb *acb) 495 { 496 struct scsipi_xfer *xs = acb->xs; 497 int status, i, s, to; 498 uint8_t istat, dstat, sstat0; 499 500 s = splbio(); 501 to = xs->timeout / 1000; 502 if (!TAILQ_EMPTY(&sc->nexus_list)) 503 printf("%s: osiop_poll called with disconnected device\n", 504 sc->sc_dev.dv_xname); 505 for (;;) { 506 i = 1000; 507 while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & 508 (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 509 if (i <= 0) { 510 #ifdef OSIOP_DEBUG 511 printf("waiting: tgt %d cmd %02x sbcl %02x" 512 " dsp %x (+%lx) dcmd %x" 513 " ds %p timeout %d\n", 514 xs->xs_periph->periph_target, 515 xs->cmd->opcode, 516 osiop_read_1(sc, OSIOP_SBCL), 517 osiop_read_4(sc, OSIOP_DSP), 518 osiop_read_4(sc, OSIOP_DSP) - 519 sc->sc_scrdma->dm_segs[0].ds_addr, 520 osiop_read_1(sc, OSIOP_DCMD), 521 acb->ds, acb->xs->timeout); 522 #endif 523 i = 1000; 524 to--; 525 if (to <= 0) { 526 osiop_reset(sc); 527 splx(s); 528 return; 529 } 530 } 531 delay(1000); 532 i--; 533 } 534 sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 535 delay(25); 536 dstat = osiop_read_1(sc, OSIOP_DSTAT); 537 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 538 if (acb != sc->sc_nexus) 539 printf("%s: osiop_poll disconnected device" 540 " completed\n", sc->sc_dev.dv_xname); 541 else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 542 sc->sc_flags &= ~OSIOP_INTSOFF; 543 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 544 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 545 } 546 osiop_scsidone(sc->sc_nexus, status); 547 } 548 549 if (xs->xs_status & XS_STS_DONE) 550 break; 551 } 552 553 splx(s); 554 return; 555 } 556 557 /* 558 * start next command that's ready 559 */ 560 void 561 osiop_sched(struct osiop_softc *sc) 562 { 563 struct scsipi_periph *periph; 564 struct osiop_acb *acb; 565 int i; 566 567 #ifdef OSIOP_DEBUG 568 if (sc->sc_nexus != NULL) { 569 printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n", 570 sc->sc_dev.dv_xname, sc->sc_nexus, 571 sc->sc_nexus->xs->xs_periph->periph_target, 572 sc->ready_list.tqh_first, 573 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 574 return; 575 } 576 #endif 577 TAILQ_FOREACH(acb, &sc->ready_list, chain) { 578 periph = acb->xs->xs_periph; 579 i = periph->periph_target; 580 if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) { 581 struct osiop_tinfo *ti; 582 583 TAILQ_REMOVE(&sc->ready_list, acb, chain); 584 sc->sc_nexus = acb; 585 ti = &sc->sc_tinfo[i]; 586 ti->lubusy |= (1 << periph->periph_lun); 587 break; 588 } 589 } 590 591 if (acb == NULL) { 592 #ifdef OSIOP_DEBUG 593 printf("%s: osiop_sched didn't find ready command\n", 594 sc->sc_dev.dv_xname); 595 #endif 596 return; 597 } 598 599 if (acb->xs->xs_control & XS_CTL_RESET) 600 osiop_reset(sc); 601 602 sc->sc_active++; 603 osiop_select(sc); 604 } 605 606 void 607 osiop_scsidone(struct osiop_acb *acb, int status) 608 { 609 struct scsipi_xfer *xs; 610 struct scsipi_periph *periph; 611 struct osiop_softc *sc; 612 int dosched = 0; 613 614 #ifdef DIAGNOSTIC 615 if (acb == NULL || acb->xs == NULL) { 616 printf("osiop_scsidone: NULL acb or scsipi_xfer\n"); 617 #if defined(OSIOP_DEBUG) && defined(DDB) 618 Debugger(); 619 #endif 620 return; 621 } 622 #endif 623 xs = acb->xs; 624 sc = acb->sc; 625 periph = xs->xs_periph; 626 627 #ifdef OSIOP_DEBUG 628 if (acb->status != ACB_S_DONE) 629 printf("%s: acb not done (status %d)\n", 630 sc->sc_dev.dv_xname, acb->status); 631 #endif 632 633 xs->status = status; 634 635 switch (status) { 636 case SCSI_OK: 637 xs->error = XS_NOERROR; 638 break; 639 case SCSI_BUSY: 640 xs->error = XS_BUSY; 641 break; 642 case SCSI_CHECK: 643 xs->error = XS_BUSY; 644 break; 645 case SCSI_OSIOP_NOCHECK: 646 /* 647 * don't check status, xs->error is already valid 648 */ 649 break; 650 case SCSI_OSIOP_NOSTATUS: 651 /* 652 * the status byte was not updated, cmd was 653 * aborted 654 */ 655 xs->error = XS_SELTIMEOUT; 656 break; 657 default: 658 #ifdef OSIOP_DEBUG 659 printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", 660 sc->sc_dev.dv_xname, status); 661 #endif 662 xs->error = XS_DRIVER_STUFFUP; 663 break; 664 } 665 666 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 667 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, 668 (xs->xs_control & XS_CTL_DATA_IN) ? 669 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 670 bus_dmamap_unload(sc->sc_dmat, acb->datadma); 671 } 672 673 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, acb->cmdlen, 674 BUS_DMASYNC_POSTWRITE); 675 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 676 677 /* 678 * Remove the ACB from whatever queue it's on. We have to do a bit of 679 * a hack to figure out which queue it's on. Note that it is *not* 680 * necessary to cdr down the ready queue, but we must cdr down the 681 * nexus queue and see if it's there, so we can mark the unit as no 682 * longer busy. This code is sickening, but it works. 683 */ 684 if (acb == sc->sc_nexus) { 685 sc->sc_nexus = NULL; 686 sc->sc_tinfo[periph->periph_target].lubusy &= 687 ~(1 << periph->periph_lun); 688 if (!TAILQ_EMPTY(&sc->ready_list)) 689 dosched = 1; /* start next command */ 690 sc->sc_active--; 691 OSIOP_TRACE('d', 'a', status, 0); 692 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 693 TAILQ_REMOVE(&sc->ready_list, acb, chain); 694 OSIOP_TRACE('d', 'r', status, 0); 695 } else { 696 struct osiop_acb *acb2; 697 TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { 698 if (acb2 == acb) { 699 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 700 sc->sc_tinfo[periph->periph_target].lubusy &= 701 ~(1 << periph->periph_lun); 702 sc->sc_active--; 703 break; 704 } 705 } 706 if (acb2 == NULL) { 707 if (acb->chain.tqe_next != NULL) { 708 TAILQ_REMOVE(&sc->ready_list, acb, chain); 709 sc->sc_active--; 710 } else { 711 printf("%s: can't find matching acb\n", 712 sc->sc_dev.dv_xname); 713 #ifdef DDB 714 #if 0 715 Debugger(); 716 #endif 717 #endif 718 } 719 } 720 OSIOP_TRACE('d', 'n', status, 0); 721 } 722 /* Put it on the free list. */ 723 acb->status = ACB_S_FREE; 724 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 725 sc->sc_tinfo[periph->periph_target].cmds++; 726 727 callout_stop(&xs->xs_callout); 728 xs->resid = 0; 729 scsipi_done(xs); 730 731 if (dosched && sc->sc_nexus == NULL) 732 osiop_sched(sc); 733 } 734 735 void 736 osiop_abort(struct osiop_softc *sc, const char *where) 737 { 738 739 printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 740 sc->sc_dev.dv_xname, where, 741 osiop_read_1(sc, OSIOP_DSTAT), 742 osiop_read_1(sc, OSIOP_SSTAT0), 743 osiop_read_1(sc, OSIOP_SBCL)); 744 745 /* XXX XXX XXX */ 746 if (sc->sc_active > 0) { 747 sc->sc_active = 0; 748 } 749 } 750 751 void 752 osiop_init(struct osiop_softc *sc) 753 { 754 int i, inhibit_sync, inhibit_disc; 755 756 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 757 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 758 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 759 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 760 761 if (sc->sc_minsync < 25) 762 sc->sc_minsync = 25; 763 764 if (sc->sc_clock_freq <= 25) { 765 sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ 766 sc->sc_tcp[0] = sc->sc_tcp[1]; 767 } else if (sc->sc_clock_freq <= 37) { 768 sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ 769 sc->sc_tcp[0] = sc->sc_tcp[2]; 770 } else if (sc->sc_clock_freq <= 50) { 771 sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ 772 sc->sc_tcp[0] = sc->sc_tcp[3]; 773 } else { 774 sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ 775 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 776 } 777 778 if ((sc->sc_cfflags & 0x10000) != 0) { 779 sc->sc_flags |= OSIOP_NODMA; 780 #ifdef OSIOP_DEBUG 781 printf("%s: DMA disabled; use polling\n", 782 sc->sc_dev.dv_xname); 783 #endif 784 } 785 786 inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ 787 inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ 788 #ifdef OSIOP_DEBUG 789 if (inhibit_sync != 0) 790 printf("%s: Inhibiting synchronous transfer: 0x%02x\n", 791 sc->sc_dev.dv_xname, inhibit_sync); 792 if (inhibit_disc != 0) 793 printf("%s: Inhibiting disconnect: 0x%02x\n", 794 sc->sc_dev.dv_xname, inhibit_disc); 795 #endif 796 for (i = 0; i < OSIOP_NTGT; i++) { 797 if (inhibit_sync & (1 << i)) 798 sc->sc_tinfo[i].flags |= TI_NOSYNC; 799 if (inhibit_disc & (1 << i)) 800 sc->sc_tinfo[i].flags |= TI_NODISC; 801 } 802 803 osiop_resetbus(sc); 804 osiop_reset(sc); 805 } 806 807 void 808 osiop_reset(struct osiop_softc *sc) 809 { 810 struct osiop_acb *acb; 811 int i, s; 812 uint8_t stat; 813 814 #ifdef OSIOP_DEBUG 815 printf("%s: resetting chip\n", sc->sc_dev.dv_xname); 816 #endif 817 if (sc->sc_flags & OSIOP_ALIVE) 818 osiop_abort(sc, "reset"); 819 820 s = splbio(); 821 822 /* 823 * Reset the chip 824 * XXX - is this really needed? 825 */ 826 827 /* abort current script */ 828 osiop_write_1(sc, OSIOP_ISTAT, 829 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); 830 /* reset chip */ 831 osiop_write_1(sc, OSIOP_ISTAT, 832 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); 833 delay(100); 834 osiop_write_1(sc, OSIOP_ISTAT, 835 osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); 836 delay(100); 837 838 /* 839 * Set up various chip parameters 840 */ 841 osiop_write_1(sc, OSIOP_SCNTL0, 842 OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); 843 osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); 844 osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); 845 osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4); 846 /* don't enable interrupts yet */ 847 osiop_write_1(sc, OSIOP_SIEN, 0x00); 848 osiop_write_1(sc, OSIOP_DIEN, 0x00); 849 osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); 850 osiop_write_1(sc, OSIOP_DWT, 0x00); 851 osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) 852 | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); 853 osiop_write_1(sc, OSIOP_CTEST7, 854 osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); 855 osiop_write_1(sc, OSIOP_CTEST4, 856 osiop_read_1(sc, OSIOP_CTEST4) | sc->sc_ctest4); 857 858 /* will need to re-negotiate sync xfers */ 859 for (i = 0; i < OSIOP_NTGT; i++) { 860 sc->sc_tinfo[i].state = NEG_INIT; 861 sc->sc_tinfo[i].period = 0; 862 sc->sc_tinfo[i].offset = 0; 863 } 864 865 stat = osiop_read_1(sc, OSIOP_ISTAT); 866 if (stat & OSIOP_ISTAT_SIP) 867 osiop_read_1(sc, OSIOP_SSTAT0); 868 delay(25); 869 if (stat & OSIOP_ISTAT_DIP) 870 osiop_read_1(sc, OSIOP_DSTAT); 871 872 splx(s); 873 874 delay(osiop_reset_delay * 1000); 875 876 if (sc->sc_nexus != NULL) { 877 sc->sc_nexus->xs->error = 878 (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? 879 XS_TIMEOUT : XS_RESET; 880 sc->sc_nexus->status = ACB_S_DONE; 881 sc->sc_nexus->flags = 0; 882 osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); 883 } 884 while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 885 acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? 886 XS_TIMEOUT : XS_RESET; 887 acb->status = ACB_S_DONE; 888 acb->flags = 0; 889 osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); 890 } 891 892 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 893 /* enable SCSI and DMA interrupts */ 894 sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ 895 OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; 896 sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | 897 /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; 898 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 899 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 900 } 901 902 void 903 osiop_resetbus(struct osiop_softc *sc) 904 { 905 906 osiop_write_1(sc, OSIOP_SIEN, 0); 907 osiop_write_1(sc, OSIOP_SCNTL1, 908 osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); 909 delay(25); 910 osiop_write_1(sc, OSIOP_SCNTL1, 911 osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); 912 } 913 914 /* 915 * Setup Data Storage for 53C710 and start SCRIPTS processing 916 */ 917 918 void 919 osiop_start(struct osiop_softc *sc) 920 { 921 struct osiop_acb *acb = sc->sc_nexus; 922 struct osiop_ds *ds = acb->ds; 923 struct scsipi_xfer *xs = acb->xs; 924 bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; 925 struct osiop_tinfo *ti; 926 int target = xs->xs_periph->periph_target; 927 int lun = xs->xs_periph->periph_lun; 928 int disconnect, i; 929 930 #ifdef OSIOP_DEBUG 931 if (osiop_debug & DEBUG_DISC && 932 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 933 printf("ACK! osiop was busy: script %p dsa %p active %d\n", 934 sc->sc_script, acb->ds, sc->sc_active); 935 printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 936 osiop_read_1(sc, OSIOP_ISTAT), 937 osiop_read_1(sc, OSIOP_SFBR), 938 osiop_read_1(sc, OSIOP_LCRC), 939 osiop_read_1(sc, OSIOP_SIEN), 940 osiop_read_1(sc, OSIOP_DIEN)); 941 #ifdef DDB 942 #if 0 943 Debugger(); 944 #endif 945 #endif 946 } 947 #endif 948 949 #ifdef OSIOP_DEBUG 950 if (acb->status != ACB_S_READY) 951 panic("osiop_start: non-ready cmd in acb"); 952 #endif 953 954 acb->intstat = 0; 955 956 ds->cmd.count = acb->cmdlen; 957 ds->cmd.addr = acb->cmddma->dm_segs[0].ds_addr; 958 959 ti = &sc->sc_tinfo[target]; 960 ds->scsi_addr = ((1 << 16) << target) | (ti->sxfer << 8); 961 962 disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 && 963 (ti->flags & TI_NODISC) == 0; 964 965 ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); 966 ds->id.count = 1; 967 ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ 968 ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; 969 memset(&ds->data, 0, sizeof(ds->data)); 970 971 /* 972 * Negotiate wide is the initial negotiation state; since the 53c710 973 * doesn't do wide transfers, just begin the synchronous transfer 974 * negotiation here. 975 */ 976 if (ti->state == NEG_INIT) { 977 if ((ti->flags & TI_NOSYNC) != 0) { 978 ti->state = NEG_DONE; 979 ti->sbcl = 0; 980 ti->sxfer = 0; 981 ti->period = 0; 982 ti->offset = 0; 983 osiop_update_xfer_mode(sc, target); 984 #ifdef OSIOP_DEBUG 985 if (osiopsync_debug) 986 printf("Forcing target %d asynchronous\n", 987 target); 988 #endif 989 } else { 990 ds->msgbuf[2] = MSG_INVALID; 991 ds->msgout[1] = MSG_EXTENDED; 992 ds->msgout[2] = MSG_EXT_SDTR_LEN; 993 ds->msgout[3] = MSG_EXT_SDTR; 994 ds->msgout[4] = sc->sc_minsync; 995 ds->msgout[5] = OSIOP_MAX_OFFSET; 996 ds->id.count = MSG_EXT_SDTR_LEN + 3; 997 ti->state = NEG_WAITS; 998 #ifdef OSIOP_DEBUG 999 if (osiopsync_debug) 1000 printf("Sending sync request to target %d\n", 1001 target); 1002 #endif 1003 } 1004 } 1005 1006 acb->curaddr = 0; 1007 acb->curlen = 0; 1008 1009 /* 1010 * Build physical DMA addresses for scatter/gather I/O 1011 */ 1012 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1013 for (i = 0; i < datadma->dm_nsegs; i++) { 1014 ds->data[i].count = datadma->dm_segs[i].ds_len; 1015 ds->data[i].addr = datadma->dm_segs[i].ds_addr; 1016 } 1017 } 1018 1019 /* sync script data structure */ 1020 bus_dmamap_sync(sc->sc_dmat, dsdma, 1021 acb->dsoffset, sizeof(struct osiop_ds), 1022 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1023 1024 acb->status = ACB_S_ACTIVE; 1025 1026 /* handle timeout */ 1027 if ((xs->xs_control & XS_CTL_POLL) == 0) { 1028 int timeout = mstohz(acb->xs->timeout); 1029 /* start expire timer */ 1030 if (timeout == 0) 1031 timeout = 1; 1032 callout_reset(&xs->xs_callout, timeout, 1033 osiop_timeout, acb); 1034 } 1035 #ifdef OSIOP_DEBUG 1036 if (osiop_debug & DEBUG_DISC && 1037 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1038 printf("ACK! osiop was busy at start: " 1039 "script %p dsa %p active %d\n", 1040 sc->sc_script, acb->ds, sc->sc_active); 1041 #ifdef DDB 1042 #if 0 1043 Debugger(); 1044 #endif 1045 #endif 1046 } 1047 #endif 1048 if (TAILQ_EMPTY(&sc->nexus_list)) { 1049 if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) 1050 printf("%s: osiop_select while connected?\n", 1051 sc->sc_dev.dv_xname); 1052 osiop_write_4(sc, OSIOP_TEMP, 0); 1053 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1054 osiop_write_4(sc, OSIOP_DSA, 1055 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1056 osiop_write_4(sc, OSIOP_DSP, 1057 sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); 1058 OSIOP_TRACE('s', 1, 0, 0); 1059 } else { 1060 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1061 osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); 1062 OSIOP_TRACE('s', 2, 0, 0); 1063 } else { 1064 OSIOP_TRACE('s', 3, 1065 osiop_read_1(sc, OSIOP_ISTAT), 0); 1066 } 1067 } 1068 #ifdef OSIOP_DEBUG 1069 osiopstarts++; 1070 #endif 1071 } 1072 1073 /* 1074 * Process a DMA or SCSI interrupt from the 53C710 SIOP 1075 */ 1076 1077 int 1078 osiop_checkintr(struct osiop_softc *sc, uint8_t istat, uint8_t dstat, 1079 uint8_t sstat0, int *status) 1080 { 1081 struct osiop_acb *acb = sc->sc_nexus; 1082 struct osiop_ds *ds = NULL; /* XXX */ 1083 bus_dmamap_t dsdma = sc->sc_dsdma; 1084 bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; 1085 int target = 0; 1086 int dfifo, dbc, intcode, sstat1; 1087 1088 dfifo = osiop_read_1(sc, OSIOP_DFIFO); 1089 dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; 1090 sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); 1091 osiop_write_1(sc, OSIOP_CTEST8, 1092 osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); 1093 while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != 1094 OSIOP_CTEST1_FMT) 1095 ; 1096 osiop_write_1(sc, OSIOP_CTEST8, 1097 osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); 1098 intcode = osiop_read_4(sc, OSIOP_DSPS); 1099 #ifdef OSIOP_DEBUG 1100 osiopints++; 1101 if (osiop_read_4(sc, OSIOP_DSP) != 0 && 1102 (osiop_read_4(sc, OSIOP_DSP) < scraddr || 1103 osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { 1104 printf("%s: dsp not within script dsp %x scripts %lx:%lx", 1105 sc->sc_dev.dv_xname, 1106 osiop_read_4(sc, OSIOP_DSP), 1107 scraddr, scraddr + sizeof(osiop_script)); 1108 printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); 1109 #ifdef DDB 1110 Debugger(); 1111 #endif 1112 } 1113 #endif 1114 OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? 1115 intcode & 0xff : sstat0); 1116 1117 if (acb != NULL) { /* XXX */ 1118 ds = acb->ds; 1119 bus_dmamap_sync(sc->sc_dmat, dsdma, 1120 acb->dsoffset, sizeof(struct osiop_ds), 1121 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1122 #ifdef OSIOP_DEBUG 1123 if (acb->status != ACB_S_ACTIVE) 1124 printf("osiop_checkintr: acb not active (status %d)\n", 1125 acb->status); 1126 #endif 1127 } 1128 1129 1130 if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { 1131 /* Normal completion status, or check condition */ 1132 struct osiop_tinfo *ti; 1133 #ifdef OSIOP_DEBUG 1134 if (osiop_read_4(sc, OSIOP_DSA) != 1135 dsdma->dm_segs[0].ds_addr + acb->dsoffset) { 1136 printf("osiop: invalid dsa: %x %lx\n", 1137 osiop_read_4(sc, OSIOP_DSA), 1138 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1139 panic("*** osiop DSA invalid ***"); 1140 } 1141 #endif 1142 target = acb->xs->xs_periph->periph_target; 1143 ti = &sc->sc_tinfo[target]; 1144 if (ti->state == NEG_WAITS) { 1145 if (ds->msgbuf[1] == MSG_INVALID) 1146 printf("%s: target %d ignored sync request\n", 1147 sc->sc_dev.dv_xname, target); 1148 else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) 1149 printf("%s: target %d rejected sync request\n", 1150 sc->sc_dev.dv_xname, target); 1151 ti->period = 0; 1152 ti->offset = 0; 1153 osiop_update_xfer_mode(sc, target); 1154 ti->state = NEG_DONE; 1155 } 1156 #ifdef OSIOP_DEBUG 1157 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1158 #if 0 1159 printf("ACK! osiop was busy at end: " 1160 "script %p dsa %p\n", &osiop_script, ds); 1161 #ifdef DDB 1162 Debugger(); 1163 #endif 1164 #endif 1165 } 1166 if (ds->msgbuf[0] != MSG_CMDCOMPLETE) 1167 printf("%s: message was not COMMAND COMPLETE: %02x\n", 1168 sc->sc_dev.dv_xname, ds->msgbuf[0]); 1169 #endif 1170 if (!TAILQ_EMPTY(&sc->nexus_list)) 1171 osiop_write_1(sc, OSIOP_DCNTL, 1172 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1173 *status = ds->stat[0]; 1174 acb->status = ACB_S_DONE; 1175 return (1); 1176 } 1177 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { 1178 target = acb->xs->xs_periph->periph_target; 1179 if (ds->msgbuf[1] == MSG_EXTENDED && 1180 ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1181 ds->msgbuf[3] == MSG_EXT_SDTR) { 1182 struct osiop_tinfo *ti = &sc->sc_tinfo[target]; 1183 #ifdef OSIOP_DEBUG 1184 if (osiopsync_debug) 1185 printf("sync msg in: " 1186 "%02x %02x %02x %02x %02x %02x\n", 1187 ds->msgbuf[0], ds->msgbuf[1], 1188 ds->msgbuf[2], ds->msgbuf[3], 1189 ds->msgbuf[4], ds->msgbuf[5]); 1190 #endif 1191 ti->period = ds->msgbuf[4]; 1192 ti->offset = ds->msgbuf[5]; 1193 ti->sxfer = 0; 1194 ti->sbcl = 0; 1195 if (ds->msgbuf[5] != 0) 1196 scsi_period_to_osiop(sc, target); 1197 osiop_update_xfer_mode(sc, target); 1198 1199 bus_dmamap_sync(sc->sc_dmat, dsdma, 1200 acb->dsoffset, sizeof(struct osiop_ds), 1201 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1202 osiop_write_1(sc, OSIOP_SXFER, ti->sxfer); 1203 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1204 if (ti->state == NEG_WAITS) { 1205 ti->state = NEG_DONE; 1206 osiop_write_4(sc, OSIOP_DSP, 1207 scraddr + Ent_clear_ack); 1208 return (0); 1209 } 1210 osiop_write_1(sc, OSIOP_DCNTL, 1211 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1212 ti->state = NEG_DONE; 1213 return (0); 1214 } 1215 /* XXX - not SDTR message */ 1216 } 1217 if (sstat0 & OSIOP_SSTAT0_M_A) { 1218 /* Phase mismatch */ 1219 #ifdef OSIOP_DEBUG 1220 osiopphmm++; 1221 if (acb == NULL) 1222 printf("%s: Phase mismatch with no active command?\n", 1223 sc->sc_dev.dv_xname); 1224 #endif 1225 if (acb->datalen > 0) { 1226 int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; 1227 if (sstat1 & OSIOP_SSTAT1_ORF) 1228 adjust++; 1229 if (sstat1 & OSIOP_SSTAT1_OLF) 1230 adjust++; 1231 acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; 1232 acb->curlen = dbc + adjust; 1233 #ifdef OSIOP_DEBUG 1234 if (osiop_debug & DEBUG_DISC) { 1235 printf("Phase mismatch: curaddr %lx " 1236 "curlen %lx dfifo %x dbc %x sstat1 %x " 1237 "adjust %x sbcl %x starts %d acb %p\n", 1238 acb->curaddr, acb->curlen, dfifo, 1239 dbc, sstat1, adjust, 1240 osiop_read_1(sc, OSIOP_SBCL), 1241 osiopstarts, acb); 1242 if (ds->data[1].count != 0) { 1243 int i; 1244 for (i = 0; ds->data[i].count != 0; i++) 1245 printf("chain[%d] " 1246 "addr %x len %x\n", i, 1247 ds->data[i].addr, 1248 ds->data[i].count); 1249 } 1250 bus_dmamap_sync(sc->sc_dmat, dsdma, 1251 acb->dsoffset, sizeof(struct osiop_ds), 1252 BUS_DMASYNC_PREREAD | 1253 BUS_DMASYNC_PREWRITE); 1254 } 1255 #endif 1256 } 1257 #ifdef OSIOP_DEBUG 1258 OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), 1259 osiop_read_4(sc, OSIOP_DSP) >> 8, 1260 osiop_read_4(sc, OSIOP_DSP)); 1261 if (osiop_debug & DEBUG_PHASE) 1262 printf("Phase mismatch: %x dsp +%lx dcmd %x\n", 1263 osiop_read_1(sc, OSIOP_SBCL), 1264 osiop_read_4(sc, OSIOP_DSP) - scraddr, 1265 osiop_read_4(sc, OSIOP_DBC)); 1266 #endif 1267 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { 1268 printf("Phase mismatch: " 1269 "REQ not asserted! %02x dsp %x\n", 1270 osiop_read_1(sc, OSIOP_SBCL), 1271 osiop_read_4(sc, OSIOP_DSP)); 1272 #if defined(OSIOP_DEBUG) && defined(DDB) 1273 /*Debugger(); XXX is*/ 1274 #endif 1275 } 1276 switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { 1277 case DATA_OUT_PHASE: 1278 case DATA_IN_PHASE: 1279 case STATUS_PHASE: 1280 case COMMAND_PHASE: 1281 case MSG_IN_PHASE: 1282 case MSG_OUT_PHASE: 1283 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1284 break; 1285 default: 1286 printf("%s: invalid phase\n", sc->sc_dev.dv_xname); 1287 goto bad_phase; 1288 } 1289 return (0); 1290 } 1291 if (sstat0 & OSIOP_SSTAT0_STO) { 1292 /* Select timed out */ 1293 #ifdef OSIOP_DEBUG 1294 if (acb == NULL) 1295 printf("%s: Select timeout with no active command?\n", 1296 sc->sc_dev.dv_xname); 1297 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1298 printf("ACK! osiop was busy at timeout: " 1299 "script %p dsa %lx\n", sc->sc_script, 1300 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1301 printf(" sbcl %x sdid %x " 1302 "istat %x dstat %x sstat0 %x\n", 1303 osiop_read_1(sc, OSIOP_SBCL), 1304 osiop_read_1(sc, OSIOP_SDID), 1305 istat, dstat, sstat0); 1306 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { 1307 printf("Yikes, it's not busy now!\n"); 1308 #if 0 1309 *status = SCSI_OSIOP_NOSTATUS; 1310 if (!TAILQ_EMPTY(&sc->nexus_list)) 1311 osiop_write_4(sc, OSIOP_DSP, 1312 scraddr + Ent_wait_reselect); 1313 return (1); 1314 #endif 1315 } 1316 #if 0 1317 osiop_write_1(sc, OSIOP_DCNTL, 1318 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1319 #endif 1320 #ifdef DDB 1321 Debugger(); 1322 #endif 1323 return (0); 1324 } 1325 #endif 1326 acb->status = ACB_S_DONE; 1327 *status = SCSI_OSIOP_NOSTATUS; 1328 acb->xs->error = XS_SELTIMEOUT; 1329 if (!TAILQ_EMPTY(&sc->nexus_list)) 1330 osiop_write_4(sc, OSIOP_DSP, 1331 scraddr + Ent_wait_reselect); 1332 return (1); 1333 } 1334 if (acb != NULL) 1335 target = acb->xs->xs_periph->periph_target; 1336 else 1337 target = sc->sc_id; 1338 if (sstat0 & OSIOP_SSTAT0_UDC) { 1339 #ifdef OSIOP_DEBUG 1340 if (acb == NULL) 1341 printf("%s: Unexpected disconnect " 1342 "with no active command?\n", sc->sc_dev.dv_xname); 1343 printf("%s: target %d disconnected unexpectedly\n", 1344 sc->sc_dev.dv_xname, target); 1345 #endif 1346 #if 0 1347 osiop_abort(sc, "osiop_chkintr"); 1348 #endif 1349 *status = SCSI_CHECK; 1350 if (!TAILQ_EMPTY(&sc->nexus_list)) 1351 osiop_write_4(sc, OSIOP_DSP, 1352 scraddr + Ent_wait_reselect); 1353 return (acb != NULL); 1354 } 1355 if (dstat & OSIOP_DSTAT_SIR && 1356 (intcode == A_int_disc || intcode == A_int_disc_wodp)) { 1357 /* Disconnect */ 1358 if (acb == NULL) { 1359 printf("%s: Disconnect with no active command?\n", 1360 sc->sc_dev.dv_xname); 1361 return (0); 1362 } 1363 #ifdef OSIOP_DEBUG 1364 if (osiop_debug & DEBUG_DISC) { 1365 printf("%s: ID %02x disconnected TEMP %x (+%lx) " 1366 "curaddr %lx curlen %lx buf %x len %x dfifo %x " 1367 "dbc %x sstat1 %x starts %d acb %p\n", 1368 sc->sc_dev.dv_xname, 1 << target, 1369 osiop_read_4(sc, OSIOP_TEMP), 1370 (osiop_read_4(sc, OSIOP_TEMP) != 0) ? 1371 osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, 1372 acb->curaddr, acb->curlen, 1373 ds->data[0].addr, ds->data[0].count, 1374 dfifo, dbc, sstat1, osiopstarts, acb); 1375 bus_dmamap_sync(sc->sc_dmat, dsdma, 1376 acb->dsoffset, sizeof(struct osiop_ds), 1377 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1378 } 1379 #endif 1380 /* 1381 * XXXX need to update curaddr/curlen to reflect 1382 * current data transferred. If device disconnected in 1383 * the middle of a DMA block, they should already be set 1384 * by the phase change interrupt. If the disconnect 1385 * occurs on a DMA block boundary, we have to figure out 1386 * which DMA block it was. 1387 */ 1388 if (acb->datalen > 0 && 1389 osiop_read_4(sc, OSIOP_TEMP) != 0) { 1390 long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; 1391 1392 if (acb->curlen != 0 && 1393 acb->curlen != ds->data[0].count) 1394 printf("%s: curaddr/curlen already set? " 1395 "n %lx iob %lx/%lx chain[0] %x/%x\n", 1396 sc->sc_dev.dv_xname, n, 1397 acb->curaddr, acb->curlen, 1398 ds->data[0].addr, ds->data[0].count); 1399 if (n < Ent_datain) 1400 n = (n - Ent_dataout) / 16; 1401 else 1402 n = (n - Ent_datain) / 16; 1403 if (n < 0 || n >= OSIOP_NSG) 1404 printf("TEMP invalid %ld\n", n); 1405 else { 1406 acb->curaddr = ds->data[n].addr; 1407 acb->curlen = ds->data[n].count; 1408 } 1409 #ifdef OSIOP_DEBUG 1410 if (osiop_debug & DEBUG_DISC) { 1411 printf("%s: TEMP offset %ld", 1412 sc->sc_dev.dv_xname, n); 1413 printf(" curaddr %lx curlen %lx\n", 1414 acb->curaddr, acb->curlen); 1415 } 1416 #endif 1417 } 1418 /* 1419 * If data transfer was interrupted by disconnect, curaddr 1420 * and curlen should reflect the point of interruption. 1421 * Adjust the DMA chain so that the data transfer begins 1422 * at the appropriate place upon reselection. 1423 * XXX This should only be done on save data pointer message? 1424 */ 1425 if (acb->curlen > 0) { 1426 int i, j; 1427 1428 #ifdef OSIOP_DEBUG 1429 if (osiop_debug & DEBUG_DISC) 1430 printf("%s: adjusting DMA chain\n", 1431 sc->sc_dev.dv_xname); 1432 if (intcode == A_int_disc_wodp) 1433 printf("%s: ID %02x disconnected " 1434 "without Save Data Pointers\n", 1435 sc->sc_dev.dv_xname, 1 << target); 1436 #endif 1437 for (i = 0; i < OSIOP_NSG; i++) { 1438 if (ds->data[i].count == 0) 1439 break; 1440 if (acb->curaddr >= ds->data[i].addr && 1441 acb->curaddr < 1442 (ds->data[i].addr + ds->data[i].count)) 1443 break; 1444 } 1445 if (i >= OSIOP_NSG || ds->data[i].count == 0) { 1446 printf("couldn't find saved data pointer: " 1447 "curaddr %lx curlen %lx i %d\n", 1448 acb->curaddr, acb->curlen, i); 1449 #ifdef DDB 1450 Debugger(); 1451 #endif 1452 } 1453 #ifdef OSIOP_DEBUG 1454 if (osiop_debug & DEBUG_DISC) 1455 printf(" chain[0]: %x/%x -> %lx/%lx\n", 1456 ds->data[0].addr, ds->data[0].count, 1457 acb->curaddr, acb->curlen); 1458 #endif 1459 ds->data[0].addr = acb->curaddr; 1460 ds->data[0].count = acb->curlen; 1461 for (j = 1, i = i + 1; 1462 i < OSIOP_NSG && ds->data[i].count > 0; 1463 i++, j++) { 1464 #ifdef OSIOP_DEBUG 1465 if (osiop_debug & DEBUG_DISC) 1466 printf(" chain[%d]: %x/%x -> %x/%x\n", 1467 j, ds->data[j].addr, 1468 ds->data[j].count, 1469 ds->data[i].addr, 1470 ds->data[i].count); 1471 #endif 1472 ds->data[j].addr = ds->data[i].addr; 1473 ds->data[j].count = ds->data[i].count; 1474 } 1475 if (j < OSIOP_NSG) { 1476 ds->data[j].addr = 0; 1477 ds->data[j].count = 0; 1478 } 1479 bus_dmamap_sync(sc->sc_dmat, dsdma, 1480 acb->dsoffset, sizeof(struct osiop_ds), 1481 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1482 } 1483 sc->sc_tinfo[target].dconns++; 1484 /* 1485 * add nexus to waiting list 1486 * clear nexus 1487 * try to start another command for another target/lun 1488 */ 1489 acb->intstat = sc->sc_flags & OSIOP_INTSOFF; 1490 TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); 1491 sc->sc_nexus = NULL; /* no current device */ 1492 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); 1493 /* XXXX start another command ? */ 1494 if (!TAILQ_EMPTY(&sc->ready_list)) 1495 osiop_sched(sc); 1496 return (0); 1497 } 1498 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { 1499 int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; 1500 int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; 1501 #ifdef OSIOP_DEBUG 1502 uint8_t resmsg; 1503 #endif 1504 1505 /* Reconnect */ 1506 /* XXXX save current SBCL */ 1507 sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); 1508 #ifdef OSIOP_DEBUG 1509 if (osiop_debug & DEBUG_DISC) 1510 printf("%s: target ID %02x reselected dsps %x\n", 1511 sc->sc_dev.dv_xname, reselid, intcode); 1512 resmsg = osiop_read_1(sc, OSIOP_SFBR); 1513 if (!MSG_ISIDENTIFY(resmsg)) 1514 printf("%s: Reselect message in was not identify: " 1515 "%02x\n", sc->sc_dev.dv_xname, resmsg); 1516 #endif 1517 if (sc->sc_nexus != NULL) { 1518 struct scsipi_periph *periph = 1519 sc->sc_nexus->xs->xs_periph; 1520 #ifdef OSIOP_DEBUG 1521 if (osiop_debug & DEBUG_DISC) 1522 printf("%s: reselect ID %02x w/active\n", 1523 sc->sc_dev.dv_xname, reselid); 1524 #endif 1525 TAILQ_INSERT_HEAD(&sc->ready_list, 1526 sc->sc_nexus, chain); 1527 sc->sc_tinfo[periph->periph_target].lubusy 1528 &= ~(1 << periph->periph_lun); 1529 sc->sc_active--; 1530 } 1531 /* 1532 * locate acb of reselecting device 1533 * set sc->sc_nexus to acb 1534 */ 1535 TAILQ_FOREACH(acb, &sc->nexus_list, chain) { 1536 struct scsipi_periph *periph = acb->xs->xs_periph; 1537 if (reselid != periph->periph_target || 1538 reselun != periph->periph_lun) { 1539 continue; 1540 } 1541 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1542 sc->sc_nexus = acb; 1543 sc->sc_flags |= acb->intstat; 1544 acb->intstat = 0; 1545 osiop_write_4(sc, OSIOP_DSA, 1546 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1547 osiop_write_1(sc, OSIOP_SXFER, 1548 sc->sc_tinfo[reselid].sxfer); 1549 osiop_write_1(sc, OSIOP_SBCL, 1550 sc->sc_tinfo[reselid].sbcl); 1551 break; 1552 } 1553 if (acb == NULL) { 1554 printf("%s: target ID %02x reselect nexus_list %p\n", 1555 sc->sc_dev.dv_xname, reselid, 1556 TAILQ_FIRST(&sc->nexus_list)); 1557 panic("unable to find reselecting device"); 1558 } 1559 1560 osiop_write_4(sc, OSIOP_TEMP, 0); 1561 osiop_write_1(sc, OSIOP_DCNTL, 1562 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1563 return (0); 1564 } 1565 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { 1566 #ifdef OSIOP_DEBUG 1567 uint8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); 1568 1569 /* reselect was interrupted (by Sig_P or select) */ 1570 if (osiop_debug & DEBUG_DISC || 1571 (ctest2 & OSIOP_CTEST2_SIGP) == 0) 1572 printf("%s: reselect interrupted (Sig_P?) " 1573 "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1574 sc->sc_dev.dv_xname, 1575 osiop_read_1(sc, OSIOP_SCNTL1), ctest2, 1576 osiop_read_1(sc, OSIOP_SFBR), istat, 1577 osiop_read_1(sc, OSIOP_ISTAT)); 1578 #endif 1579 /* XXX assumes it was not select */ 1580 if (sc->sc_nexus == NULL) { 1581 #ifdef OSIOP_DEBUG 1582 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1583 sc->sc_dev.dv_xname); 1584 #if 0 1585 osiop_dump(sc); 1586 #ifdef DDB 1587 Debugger(); 1588 #endif 1589 #endif 1590 #endif 1591 osiop_write_1(sc, OSIOP_DCNTL, 1592 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1593 return (0); 1594 } 1595 target = sc->sc_nexus->xs->xs_periph->periph_target; 1596 osiop_write_4(sc, OSIOP_TEMP, 0); 1597 osiop_write_4(sc, OSIOP_DSA, 1598 dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); 1599 osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[target].sxfer); 1600 osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[target].sbcl); 1601 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); 1602 return (0); 1603 } 1604 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { 1605 /* Unrecognized message in byte */ 1606 if (acb == NULL) 1607 printf("%s: Bad message-in with no active command?\n", 1608 sc->sc_dev.dv_xname); 1609 printf("%s: Unrecognized message in data " 1610 "sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname, 1611 osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], 1612 osiop_read_1(sc, OSIOP_SBCL)); 1613 /* what should be done here? */ 1614 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1615 bus_dmamap_sync(sc->sc_dmat, dsdma, 1616 acb->dsoffset, sizeof(struct osiop_ds), 1617 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1618 return (0); 1619 } 1620 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { 1621 /* Status phase wasn't followed by message in phase? */ 1622 printf("%s: Status phase not followed by message in phase? " 1623 "sbcl %x sbdl %x\n", sc->sc_dev.dv_xname, 1624 osiop_read_1(sc, OSIOP_SBCL), 1625 osiop_read_1(sc, OSIOP_SBDL)); 1626 if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { 1627 /* It is now, just continue the script? */ 1628 osiop_write_1(sc, OSIOP_DCNTL, 1629 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1630 return (0); 1631 } 1632 } 1633 if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { 1634 printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1635 intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1636 osiop_read_1(sc, OSIOP_SBCL)); 1637 osiop_reset(sc); 1638 *status = SCSI_OSIOP_NOSTATUS; 1639 return (0); /* osiop_reset has cleaned up */ 1640 } 1641 if (sstat0 & OSIOP_SSTAT0_SGE) 1642 printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname); 1643 if (sstat0 & OSIOP_SSTAT0_PAR) 1644 printf("%s: Parity Error\n", sc->sc_dev.dv_xname); 1645 if (dstat & OSIOP_DSTAT_IID) 1646 printf("%s: Invalid instruction detected\n", 1647 sc->sc_dev.dv_xname); 1648 bad_phase: 1649 /* 1650 * temporary panic for unhandled conditions 1651 * displays various things about the 53C710 status and registers 1652 * then panics. 1653 * XXXX need to clean this up to print out the info, reset, and continue 1654 */ 1655 printf("osiop_chkintr: target %x ds %p\n", target, ds); 1656 printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, 1657 sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset, 1658 osiop_read_4(sc, OSIOP_DSP), 1659 osiop_read_4(sc, OSIOP_DBC)); 1660 printf("osiop_chkintr: istat %x dstat %x sstat0 %x " 1661 "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1662 istat, dstat, sstat0, intcode, 1663 osiop_read_4(sc, OSIOP_DSA), 1664 osiop_read_1(sc, OSIOP_SBCL), 1665 ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1666 osiop_read_1(sc, OSIOP_SFBR)); 1667 #ifdef OSIOP_DEBUG 1668 if (osiop_debug & DEBUG_DMA) 1669 panic("osiop_chkintr: **** temp ****"); 1670 #endif 1671 #ifdef DDB 1672 Debugger(); 1673 #endif 1674 osiop_reset(sc); /* hard reset */ 1675 *status = SCSI_OSIOP_NOSTATUS; 1676 acb->status = ACB_S_DONE; 1677 return (0); /* osiop_reset cleaned up */ 1678 } 1679 1680 void 1681 osiop_select(struct osiop_softc *sc) 1682 { 1683 struct osiop_acb *acb = sc->sc_nexus; 1684 1685 #ifdef OSIOP_DEBUG 1686 if (osiop_debug & DEBUG_CMD) 1687 printf("%s: select ", sc->sc_dev.dv_xname); 1688 #endif 1689 1690 if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) { 1691 sc->sc_flags |= OSIOP_INTSOFF; 1692 sc->sc_flags &= ~OSIOP_INTDEFER; 1693 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1694 osiop_write_1(sc, OSIOP_SIEN, 0); 1695 osiop_write_1(sc, OSIOP_DIEN, 0); 1696 } 1697 #if 0 1698 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 1699 sc->sc_flags &= ~OSIOP_INTSOFF; 1700 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1701 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1702 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1703 } 1704 #endif 1705 } 1706 #ifdef OSIOP_DEBUG 1707 if (osiop_debug & DEBUG_CMD) 1708 printf("osiop_select: target %x cmd %02x ds %p\n", 1709 acb->xs->xs_periph->periph_target, 1710 acb->xs->cmd->opcode, sc->sc_nexus->ds); 1711 #endif 1712 1713 osiop_start(sc); 1714 1715 return; 1716 } 1717 1718 /* 1719 * 53C710 interrupt handler 1720 */ 1721 1722 void 1723 osiop_intr(struct osiop_softc *sc) 1724 { 1725 int status, s; 1726 uint8_t istat, dstat, sstat0; 1727 1728 s = splbio(); 1729 1730 istat = sc->sc_istat; 1731 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 1732 splx(s); 1733 return; 1734 } 1735 1736 /* Got a valid interrupt on this device; set by MD handler */ 1737 dstat = sc->sc_dstat; 1738 sstat0 = sc->sc_sstat0; 1739 sc->sc_istat = 0; 1740 #ifdef OSIOP_DEBUG 1741 if (!sc->sc_active) { 1742 /* XXX needs sync */ 1743 printf("%s: spurious interrupt? " 1744 "istat %x dstat %x sstat0 %x nexus %p status %x\n", 1745 sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus, 1746 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); 1747 } 1748 #endif 1749 1750 #ifdef OSIOP_DEBUG 1751 if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { 1752 /* XXX needs sync */ 1753 printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " 1754 "sbcl %x dsp %x dcmd %x sts %x msg %x\n", 1755 sc->sc_dev.dv_xname, 1756 istat, dstat, sstat0, 1757 osiop_read_4(sc, OSIOP_DSPS), 1758 osiop_read_1(sc, OSIOP_SBCL), 1759 osiop_read_4(sc, OSIOP_DSP), 1760 osiop_read_4(sc, OSIOP_DBC), 1761 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, 1762 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); 1763 } 1764 #endif 1765 if (sc->sc_flags & OSIOP_INTDEFER) { 1766 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 1767 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1768 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1769 } 1770 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 1771 #if 0 1772 if (status == SCSI_OSIOP_NOSTATUS) 1773 printf("osiop_intr: no valid status \n"); 1774 #endif 1775 if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != 1776 OSIOP_INTSOFF) { 1777 #if 0 1778 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1779 struct scsipi_periph *periph; 1780 1781 periph = sc->sc_nexus->xs->xs_periph; 1782 printf("%s: SCSI bus busy at completion" 1783 " targ %d sbcl %02x sfbr %x lcrc " 1784 "%02x dsp +%x\n", sc->sc_dev.dv_xname, 1785 periph->periphtarget, 1786 osiop_read_1(sc, OSIOP_SBCL), 1787 osiop_read_1(sc, OSIOP_SFBR), 1788 osiop_read_1(sc, OSIOP_LCRC), 1789 osiop_read_4(sc, OSIOP_DSP) - 1790 sc->sc_scrdma->dm_segs[0].ds_addr); 1791 } 1792 #endif 1793 osiop_scsidone(sc->sc_nexus, status); 1794 } 1795 } 1796 splx(s); 1797 } 1798 1799 void 1800 osiop_update_xfer_mode(struct osiop_softc *sc, int target) 1801 { 1802 struct osiop_tinfo *tinfo = &sc->sc_tinfo[target]; 1803 struct scsipi_xfer_mode xm; 1804 1805 xm.xm_target = target; 1806 xm.xm_mode = 0; 1807 xm.xm_period = 0; 1808 xm.xm_offset = 0; 1809 1810 if (tinfo->period) { 1811 xm.xm_mode |= PERIPH_CAP_SYNC; 1812 xm.xm_period = tinfo->period; 1813 xm.xm_offset = tinfo->offset; 1814 } 1815 1816 scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 1817 } 1818 1819 void 1820 scsi_period_to_osiop(struct osiop_softc *sc, int target) 1821 { 1822 int period, offset, sxfer, sbcl; 1823 1824 period = sc->sc_tinfo[target].period; 1825 offset = sc->sc_tinfo[target].offset; 1826 for (sbcl = 1; sbcl < 4; sbcl++) { 1827 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1828 if (sxfer >= 0 && sxfer <= 7) 1829 break; 1830 } 1831 if (sbcl > 3) { 1832 printf("osiop sync: unable to compute sync params " 1833 "for period %d ns\n", period * 4); 1834 /* 1835 * XXX need to pick a value we can do and renegotiate 1836 */ 1837 sxfer = sbcl = 0; 1838 } else { 1839 sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? 1840 offset : OSIOP_MAX_OFFSET); 1841 #ifdef DEBUG_SYNC 1842 printf("osiop sync: params for period %dns: sxfer %x sbcl %x", 1843 period * 4, sxfer, sbcl); 1844 printf(" actual period %dns\n", 1845 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1846 #endif 1847 } 1848 sc->sc_tinfo[target].sxfer = sxfer; 1849 sc->sc_tinfo[target].sbcl = sbcl; 1850 #ifdef DEBUG_SYNC 1851 printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); 1852 #endif 1853 } 1854 1855 void 1856 osiop_timeout(void *arg) 1857 { 1858 struct osiop_acb *acb = arg; 1859 struct scsipi_xfer *xs = acb->xs; 1860 struct osiop_softc *sc = acb->sc; 1861 int s; 1862 1863 scsipi_printaddr(xs->xs_periph); 1864 printf("command timeout\n"); 1865 1866 s = splbio(); 1867 /* reset the scsi bus */ 1868 osiop_resetbus(sc); 1869 1870 /* deactivate callout */ 1871 callout_stop(&xs->xs_callout); 1872 acb->flags |= ACB_F_TIMEOUT; 1873 osiop_reset(sc); 1874 splx(s); 1875 return; 1876 } 1877 1878 #ifdef OSIOP_DEBUG 1879 1880 #if OSIOP_TRACE_SIZE 1881 void 1882 osiop_dump_trace(void) 1883 { 1884 int i; 1885 1886 printf("osiop trace: next index %d\n", osiop_trix); 1887 i = osiop_trix; 1888 do { 1889 printf("%3d: '%c' %02x %02x %02x\n", i, 1890 osiop_trbuf[i], osiop_trbuf[i + 1], 1891 osiop_trbuf[i + 2], osiop_trbuf[i + 3]); 1892 i = (i + 4) & (OSIOP_TRACE_SIZE - 1); 1893 } while (i != osiop_trix); 1894 } 1895 #endif 1896 1897 void 1898 osiop_dump_acb(struct osiop_acb *acb) 1899 { 1900 uint8_t *b; 1901 int i; 1902 1903 printf("acb@%p ", acb); 1904 if (acb->xs == NULL) { 1905 printf("<unused>\n"); 1906 return; 1907 } 1908 1909 b = (uint8_t *)&acb->xs->cmd; 1910 printf("(%d:%d) status %2x cmdlen %2ld cmd ", 1911 acb->xs->xs_periph->periph_target, 1912 acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen); 1913 for (i = acb->cmdlen; i > 0; i--) 1914 printf(" %02x", *b++); 1915 printf("\n"); 1916 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1917 acb->xs->datalen); 1918 printf("va %p:%lx ", acb->data, acb->datalen); 1919 printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); 1920 } 1921 1922 void 1923 osiop_dump(struct osiop_softc *sc) 1924 { 1925 struct osiop_acb *acb; 1926 int i, s; 1927 1928 s = splbio(); 1929 #if OSIOP_TRACE_SIZE 1930 osiop_dump_trace(); 1931 #endif 1932 printf("%s@%p istat %02x\n", 1933 sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT)); 1934 if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { 1935 printf("Free list:\n"); 1936 while (acb) { 1937 osiop_dump_acb(acb); 1938 acb = TAILQ_NEXT(acb, chain); 1939 } 1940 } 1941 if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { 1942 printf("Ready list:\n"); 1943 while (acb) { 1944 osiop_dump_acb(acb); 1945 acb = TAILQ_NEXT(acb, chain); 1946 } 1947 } 1948 if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 1949 printf("Nexus list:\n"); 1950 while (acb) { 1951 osiop_dump_acb(acb); 1952 acb = TAILQ_NEXT(acb, chain); 1953 } 1954 } 1955 if (sc->sc_nexus) { 1956 printf("Nexus:\n"); 1957 osiop_dump_acb(sc->sc_nexus); 1958 } 1959 for (i = 0; i < OSIOP_NTGT; i++) { 1960 if (sc->sc_tinfo[i].cmds > 2) { 1961 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1962 i, sc->sc_tinfo[i].cmds, 1963 sc->sc_tinfo[i].dconns, 1964 sc->sc_tinfo[i].lubusy); 1965 } 1966 } 1967 splx(s); 1968 } 1969 #endif 1970