osiop.c revision 1.9
1 /* $NetBSD: osiop.c,v 1.9 2002/04/05 18:27:54 bouyer 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) 1994 Michael L. Hitch 31 * Copyright (c) 1990 The Regents of the University of California. 32 * All rights reserved. 33 * 34 * This code is derived from software contributed to Berkeley by 35 * Van Jacobson of Lawrence Berkeley Laboratory. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)siop.c 7.5 (Berkeley) 5/4/91 66 */ 67 68 /* 69 * MI NCR53C710 scsi adaptor driver; based on arch/amiga/dev/siop.c: 70 * NetBSD: siop.c,v 1.43 1999/09/30 22:59:53 thorpej Exp 71 * 72 * bus_space/bus_dma'fied by Izumi Tsutsui <tsutsui (at) ceres.dti.ne.jp> 73 * 74 * The 53c710 datasheet is avaliable at: 75 * http://www.lsilogic.com/techlib/techdocs/storage_stand_prod/index.html 76 */ 77 78 #include <sys/cdefs.h> 79 __KERNEL_RCSID(0, "$NetBSD: osiop.c,v 1.9 2002/04/05 18:27:54 bouyer Exp $"); 80 81 /* #define OSIOP_DEBUG */ 82 83 #include "opt_ddb.h" 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/device.h> 88 #include <sys/malloc.h> 89 #include <sys/buf.h> 90 #include <sys/kernel.h> 91 92 #include <uvm/uvm_extern.h> 93 94 #include <dev/scsipi/scsi_all.h> 95 #include <dev/scsipi/scsipi_all.h> 96 #include <dev/scsipi/scsiconf.h> 97 #include <dev/scsipi/scsi_message.h> 98 99 #include <machine/cpu.h> 100 #include <machine/bus.h> 101 102 #include <dev/ic/osiopreg.h> 103 #include <dev/ic/osiopvar.h> 104 105 /* 53C710 script */ 106 #include <dev/microcode/siop/osiop.out> 107 108 void osiop_attach(struct osiop_softc *); 109 void osiop_minphys(struct buf *); 110 void osiop_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 111 void *); 112 void osiop_poll(struct osiop_softc *, struct osiop_acb *); 113 void osiop_sched(struct osiop_softc *); 114 void osiop_scsidone(struct osiop_acb *, int); 115 void osiop_abort(struct osiop_softc *, const char *); 116 void osiop_init(struct osiop_softc *); 117 void osiop_reset(struct osiop_softc *); 118 void osiop_resetbus(struct osiop_softc *); 119 void osiop_start(struct osiop_softc *); 120 int osiop_checkintr(struct osiop_softc *, u_int8_t, u_int8_t, u_int8_t, int *); 121 void osiop_select(struct osiop_softc *); 122 void osiop_update_xfer_mode(struct osiop_softc *, int); 123 void scsi_period_to_osiop(struct osiop_softc *, int); 124 void osiop_timeout(void *); 125 126 int osiop_reset_delay = 250; /* delay after reset, in milleseconds */ 127 128 #ifdef OSIOP_DEBUG_SYNC 129 /* 130 * sync period transfer lookup - only valid for 66MHz clock 131 */ 132 static struct { 133 u_int8_t p; /* period from sync request message */ 134 u_int8_t r; /* siop_period << 4 | sbcl */ 135 } sync_tab[] = { 136 { 60/4, 0<<4 | 1}, 137 { 76/4, 1<<4 | 1}, 138 { 92/4, 2<<4 | 1}, 139 { 92/4, 0<<4 | 2}, 140 {108/4, 3<<4 | 1}, 141 {116/4, 1<<4 | 2}, 142 {120/4, 4<<4 | 1}, 143 {120/4, 0<<4 | 3}, 144 {136/4, 5<<4 | 1}, 145 {140/4, 2<<4 | 2}, 146 {152/4, 6<<4 | 1}, 147 {152/4, 1<<4 | 3}, 148 {164/4, 3<<4 | 2}, 149 {168/4, 7<<4 | 1}, 150 {180/4, 2<<4 | 3}, 151 {184/4, 4<<4 | 2}, 152 {208/4, 5<<4 | 2}, 153 {212/4, 3<<4 | 3}, 154 {232/4, 6<<4 | 2}, 155 {240/4, 4<<4 | 3}, 156 {256/4, 7<<4 | 2}, 157 {272/4, 5<<4 | 3}, 158 {300/4, 6<<4 | 3}, 159 {332/4, 7<<4 | 3} 160 }; 161 #endif 162 163 #ifdef OSIOP_DEBUG 164 #define DEBUG_DMA 0x01 165 #define DEBUG_INT 0x02 166 #define DEBUG_PHASE 0x04 167 #define DEBUG_UNEXCEPT 0x08 168 #define DEBUG_DISC 0x10 169 #define DEBUG_CMD 0x20 170 #define DEBUG_ALL 0xff 171 int osiop_debug = 0; /*DEBUG_ALL;*/ 172 int osiopsync_debug = 0; 173 int osiopdma_hits = 1; 174 int osiopstarts = 0; 175 int osiopints = 0; 176 int osiopphmm = 0; 177 int osiop_trix = 0; 178 #define OSIOP_TRACE_SIZE 128 179 #define OSIOP_TRACE(a,b,c,d) do { \ 180 osiop_trbuf[osiop_trix + 0] = (a); \ 181 osiop_trbuf[osiop_trix + 1] = (b); \ 182 osiop_trbuf[osiop_trix + 2] = (c); \ 183 osiop_trbuf[osiop_trix + 3] = (d); \ 184 osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \ 185 } while (0) 186 u_int8_t osiop_trbuf[OSIOP_TRACE_SIZE]; 187 void osiop_dump_trace(void); 188 void osiop_dump_acb(struct osiop_acb *); 189 void osiop_dump(struct osiop_softc *); 190 #else 191 #define OSIOP_TRACE(a,b,c,d) 192 #endif 193 194 void 195 osiop_attach(sc) 196 struct osiop_softc *sc; 197 { 198 struct osiop_acb *acb; 199 bus_dma_segment_t seg; 200 int nseg; 201 int i, err; 202 203 /* 204 * Allocate and map DMA-safe memory for the script. 205 */ 206 err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 207 &seg, 1, &nseg, BUS_DMA_NOWAIT); 208 if (err) { 209 printf(": failed to allocate script memory, err=%d\n", err); 210 return; 211 } 212 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE, 213 (caddr_t *)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 214 if (err) { 215 printf(": failed to map script memory, err=%d\n", err); 216 return; 217 } 218 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 219 BUS_DMA_NOWAIT, &sc->sc_scrdma); 220 if (err) { 221 printf(": failed to create script map, err=%d\n", err); 222 return; 223 } 224 err = bus_dmamap_load(sc->sc_dmat, sc->sc_scrdma, 225 sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 226 if (err) { 227 printf(": failed to load script map, err=%d\n", err); 228 return; 229 } 230 231 /* 232 * Copy and sync script 233 */ 234 memcpy(sc->sc_script, osiop_script, sizeof(osiop_script)); 235 bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script), 236 BUS_DMASYNC_PREWRITE); 237 238 /* 239 * Allocate and map DMA-safe memory for the script data structure. 240 */ 241 err = bus_dmamem_alloc(sc->sc_dmat, 242 sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0, 243 &seg, 1, &nseg, BUS_DMA_NOWAIT); 244 if (err) { 245 printf(": failed to allocate ds memory, err=%d\n", err); 246 return; 247 } 248 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, 249 sizeof(struct osiop_ds) * OSIOP_NACB, (caddr_t *)&sc->sc_ds, 250 BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 251 if (err) { 252 printf(": failed to map ds memory, err=%d\n", err); 253 return; 254 } 255 err = bus_dmamap_create(sc->sc_dmat, 256 sizeof(struct osiop_ds) * OSIOP_NACB, 1, 257 sizeof(struct osiop_ds) * OSIOP_NACB, 0, 258 BUS_DMA_NOWAIT, &sc->sc_dsdma); 259 if (err) { 260 printf(": failed to create ds map, err=%d\n", err); 261 return; 262 } 263 err = bus_dmamap_load(sc->sc_dmat, sc->sc_dsdma, sc->sc_ds, 264 sizeof(struct osiop_ds) * OSIOP_NACB, NULL, BUS_DMA_NOWAIT); 265 if (err) { 266 printf(": failed to load ds map, err=%d\n", err); 267 return; 268 } 269 270 acb = malloc(sizeof(struct osiop_acb) * OSIOP_NACB, 271 M_DEVBUF, M_NOWAIT|M_ZERO); 272 if (acb == NULL) { 273 printf(": can't allocate memory for acb\n"); 274 return; 275 } 276 sc->sc_acb = acb; 277 sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags; 278 sc->sc_nexus = NULL; 279 sc->sc_active = 0; 280 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 281 282 /* Initialize command block queue */ 283 TAILQ_INIT(&sc->ready_list); 284 TAILQ_INIT(&sc->nexus_list); 285 TAILQ_INIT(&sc->free_list); 286 287 /* Initialize each command block */ 288 for (i = 0; i < OSIOP_NACB; i++) { 289 bus_addr_t dsa; 290 291 /* XXX How much size is required for each command block? */ 292 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 293 0, BUS_DMA_NOWAIT, &acb->cmddma); 294 if (err) { 295 printf(": failed to create cmddma map, err=%d\n", err); 296 return; 297 } 298 err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, 299 OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); 300 if (err) { 301 printf(": failed to create datadma map, err=%d\n", 302 err); 303 return; 304 } 305 306 acb->sc = sc; 307 acb->ds = &sc->sc_ds[i]; 308 acb->dsoffset = sizeof(struct osiop_ds) * i; 309 310 dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; 311 acb->ds->id.addr = dsa + OSIOP_DSIDOFF; 312 acb->ds->status.count = 1; 313 acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; 314 acb->ds->msg.count = 1; 315 acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; 316 acb->ds->msgin.count = 1; 317 acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; 318 acb->ds->extmsg.count = 1; 319 acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; 320 acb->ds->synmsg.count = 3; 321 acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; 322 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 323 324 acb++; 325 } 326 327 printf(": NCR53C710 rev %d, %dMHz, SCSI ID %d\n", 328 osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq, sc->sc_id); 329 330 /* 331 * Initialize all 332 */ 333 osiop_init(sc); 334 335 /* 336 * Fill in the adapter. 337 */ 338 sc->sc_adapter.adapt_dev = &sc->sc_dev; 339 sc->sc_adapter.adapt_nchannels = 1; 340 sc->sc_adapter.adapt_openings = OSIOP_NACB; 341 sc->sc_adapter.adapt_max_periph = 1; 342 sc->sc_adapter.adapt_ioctl = NULL; 343 sc->sc_adapter.adapt_minphys = osiop_minphys; 344 sc->sc_adapter.adapt_request = osiop_scsipi_request; 345 346 /* 347 * Fill in the channel. 348 */ 349 sc->sc_channel.chan_adapter = &sc->sc_adapter; 350 sc->sc_channel.chan_bustype = &scsi_bustype; 351 sc->sc_channel.chan_channel = 0; 352 sc->sc_channel.chan_ntargets = OSIOP_NTGT; 353 sc->sc_channel.chan_nluns = 8; 354 sc->sc_channel.chan_id = sc->sc_id; 355 356 /* 357 * Now try to attach all the sub devices. 358 */ 359 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 360 } 361 362 /* 363 * default minphys routine for osiop based controllers 364 */ 365 void 366 osiop_minphys(bp) 367 struct buf *bp; 368 { 369 370 if (bp->b_bcount > OSIOP_MAX_XFER) 371 bp->b_bcount = OSIOP_MAX_XFER; 372 minphys(bp); 373 } 374 375 /* 376 * used by specific osiop controller 377 * 378 */ 379 void 380 osiop_scsipi_request(chan, req, arg) 381 struct scsipi_channel *chan; 382 scsipi_adapter_req_t req; 383 void *arg; 384 { 385 struct scsipi_xfer *xs; 386 struct scsipi_periph *periph; 387 struct osiop_acb *acb; 388 struct osiop_softc *sc; 389 int err, flags, s; 390 391 sc = (struct osiop_softc *)chan->chan_adapter->adapt_dev; 392 393 switch (req) { 394 case ADAPTER_REQ_RUN_XFER: 395 xs = arg; 396 periph = xs->xs_periph; 397 flags = xs->xs_control; 398 399 /* XXXX ?? */ 400 if (flags & XS_CTL_DATA_UIO) 401 panic("osiop: scsi data uio requested"); 402 403 /* XXXX ?? */ 404 if (sc->sc_nexus && flags & XS_CTL_POLL) 405 #if 0 406 panic("osiop_scsicmd: busy"); 407 #else 408 printf("osiop_scsicmd: busy\n"); 409 #endif 410 411 s = splbio(); 412 acb = TAILQ_FIRST(&sc->free_list); 413 if (acb != NULL) { 414 TAILQ_REMOVE(&sc->free_list, acb, chain); 415 } 416 #ifdef DIAGNOSTIC 417 else { 418 scsipi_printaddr(periph); 419 printf("unable to allocate acb\n"); 420 panic("osiop_scsipi_request"); 421 } 422 #endif 423 424 acb->status = ACB_S_READY; 425 acb->xs = xs; 426 427 /* Setup DMA map for SCSI command buffer */ 428 err = bus_dmamap_load(sc->sc_dmat, acb->cmddma, 429 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 430 if (err) { 431 printf("%s: unable to load cmd DMA map: %d", 432 sc->sc_dev.dv_xname, err); 433 xs->error = XS_DRIVER_STUFFUP; 434 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 435 scsipi_done(xs); 436 splx(s); 437 return; 438 } 439 440 /* Setup DMA map for data buffer */ 441 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 442 err = bus_dmamap_load(sc->sc_dmat, acb->datadma, 443 xs->data, xs->datalen, NULL, 444 BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 445 ((xs->xs_control & XS_CTL_DATA_IN) ? 446 BUS_DMA_READ : BUS_DMA_WRITE)); 447 if (err) { 448 printf("%s: unable to load data DMA map: %d", 449 sc->sc_dev.dv_xname, err); 450 xs->error = XS_DRIVER_STUFFUP; 451 scsipi_done(xs); 452 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 453 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 454 splx(s); 455 return; 456 } 457 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 458 0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN) ? 459 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 460 } 461 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, xs->cmdlen, 462 BUS_DMASYNC_PREWRITE); 463 464 acb->cmdlen = xs->cmdlen; 465 acb->datalen = xs->datalen; 466 #ifdef OSIOP_DEBUG 467 acb->data = xs->data; 468 #endif 469 470 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 471 472 if (sc->sc_nexus == NULL) 473 osiop_sched(sc); 474 475 splx(s); 476 477 if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) 478 osiop_poll(sc, acb); 479 return; 480 481 case ADAPTER_REQ_GROW_RESOURCES: 482 return; 483 484 case ADAPTER_REQ_SET_XFER_MODE: 485 { 486 struct osiop_tinfo *ti; 487 struct scsipi_xfer_mode *xm = arg; 488 489 ti = &sc->sc_tinfo[xm->xm_target]; 490 491 if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 492 (ti->flags & TI_NOSYNC) == 0) 493 ti->state = NEG_INIT; 494 495 /* 496 * If we're not going to negotiate, send the 497 * notification now, since it won't happen later. 498 */ 499 if (ti->state == NEG_DONE) 500 osiop_update_xfer_mode(sc, xm->xm_target); 501 502 return; 503 } 504 } 505 } 506 507 void 508 osiop_poll(sc, acb) 509 struct osiop_softc *sc; 510 struct osiop_acb *acb; 511 { 512 struct scsipi_xfer *xs = acb->xs; 513 int status, i, s, to; 514 u_int8_t istat, dstat, sstat0; 515 516 s = splbio(); 517 to = xs->timeout / 1000; 518 if (!TAILQ_EMPTY(&sc->nexus_list)) 519 printf("%s: osiop_poll called with disconnected device\n", 520 sc->sc_dev.dv_xname); 521 for (;;) { 522 i = 1000; 523 while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & 524 (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 525 if (i <= 0) { 526 #ifdef OSIOP_DEBUG 527 printf("waiting: tgt %d cmd %02x sbcl %02x" 528 " dsp %x (+%lx) dcmd %x" 529 " ds %p timeout %d\n", 530 xs->xs_periph->periph_target, 531 xs->cmd->opcode, 532 osiop_read_1(sc, OSIOP_SBCL), 533 osiop_read_4(sc, OSIOP_DSP), 534 osiop_read_4(sc, OSIOP_DSP) - 535 sc->sc_scrdma->dm_segs[0].ds_addr, 536 osiop_read_1(sc, OSIOP_DCMD), 537 acb->ds, acb->xs->timeout); 538 #endif 539 i = 1000; 540 to--; 541 if (to <= 0) { 542 osiop_reset(sc); 543 splx(s); 544 return; 545 } 546 } 547 delay(1000); 548 i--; 549 } 550 sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 551 dstat = osiop_read_1(sc, OSIOP_DSTAT); 552 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 553 if (acb != sc->sc_nexus) 554 printf("%s: osiop_poll disconnected device" 555 " completed\n", sc->sc_dev.dv_xname); 556 else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 557 sc->sc_flags &= ~OSIOP_INTSOFF; 558 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 559 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 560 } 561 osiop_scsidone(sc->sc_nexus, status); 562 } 563 564 if (xs->xs_status & XS_STS_DONE) 565 break; 566 } 567 568 splx(s); 569 return; 570 } 571 572 /* 573 * start next command that's ready 574 */ 575 void 576 osiop_sched(sc) 577 struct osiop_softc *sc; 578 { 579 struct scsipi_periph *periph; 580 struct osiop_acb *acb; 581 int i; 582 583 #ifdef OSIOP_DEBUG 584 if (sc->sc_nexus != NULL) { 585 printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n", 586 sc->sc_dev.dv_xname, sc->sc_nexus, 587 sc->sc_nexus->xs->xs_periph->periph_target, 588 sc->ready_list.tqh_first, 589 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 590 return; 591 } 592 #endif 593 TAILQ_FOREACH(acb, &sc->ready_list, chain) { 594 periph = acb->xs->xs_periph; 595 i = periph->periph_target; 596 if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) { 597 struct osiop_tinfo *ti; 598 599 TAILQ_REMOVE(&sc->ready_list, acb, chain); 600 sc->sc_nexus = acb; 601 ti = &sc->sc_tinfo[i]; 602 ti->lubusy |= (1 << periph->periph_lun); 603 break; 604 } 605 } 606 607 if (acb == NULL) { 608 #ifdef OSIOP_DEBUG 609 printf("%s: osiop_sched didn't find ready command\n", 610 sc->sc_dev.dv_xname); 611 #endif 612 return; 613 } 614 615 if (acb->xs->xs_control & XS_CTL_RESET) 616 osiop_reset(sc); 617 618 sc->sc_active++; 619 osiop_select(sc); 620 } 621 622 void 623 osiop_scsidone(acb, status) 624 struct osiop_acb *acb; 625 int status; 626 { 627 struct scsipi_xfer *xs; 628 struct scsipi_periph *periph; 629 struct osiop_softc *sc; 630 int dosched = 0; 631 632 #ifdef DIAGNOSTIC 633 if (acb == NULL || acb->xs == NULL) { 634 printf("osiop_scsidone: NULL acb or scsipi_xfer\n"); 635 #if defined(OSIOP_DEBUG) && defined(DDB) 636 Debugger(); 637 #endif 638 return; 639 } 640 #endif 641 xs = acb->xs; 642 sc = acb->sc; 643 periph = xs->xs_periph; 644 645 #ifdef OSIOP_DEBUG 646 if (acb->status != ACB_S_DONE) 647 printf("%s: acb not done (status %d)\n", 648 sc->sc_dev.dv_xname, acb->status); 649 #endif 650 651 xs->status = status; 652 653 switch (status) { 654 case SCSI_OK: 655 xs->error = XS_NOERROR; 656 break; 657 case SCSI_BUSY: 658 xs->error = XS_BUSY; 659 break; 660 case SCSI_CHECK: 661 xs->error = XS_BUSY; 662 break; 663 case SCSI_OSIOP_NOCHECK: 664 /* 665 * don't check status, xs->error is already valid 666 */ 667 break; 668 case SCSI_OSIOP_NOSTATUS: 669 /* 670 * the status byte was not updated, cmd was 671 * aborted 672 */ 673 xs->error = XS_SELTIMEOUT; 674 break; 675 default: 676 #ifdef OSIOP_DEBUG 677 printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", 678 sc->sc_dev.dv_xname, status); 679 #endif 680 xs->error = XS_DRIVER_STUFFUP; 681 break; 682 } 683 684 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 685 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, 686 (xs->xs_control & XS_CTL_DATA_IN) ? 687 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 688 bus_dmamap_unload(sc->sc_dmat, acb->datadma); 689 } 690 691 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, acb->cmdlen, 692 BUS_DMASYNC_POSTWRITE); 693 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 694 695 /* 696 * Remove the ACB from whatever queue it's on. We have to do a bit of 697 * a hack to figure out which queue it's on. Note that it is *not* 698 * necessary to cdr down the ready queue, but we must cdr down the 699 * nexus queue and see if it's there, so we can mark the unit as no 700 * longer busy. This code is sickening, but it works. 701 */ 702 if (acb == sc->sc_nexus) { 703 sc->sc_nexus = NULL; 704 sc->sc_tinfo[periph->periph_target].lubusy &= 705 ~(1 << periph->periph_lun); 706 if (!TAILQ_EMPTY(&sc->ready_list)) 707 dosched = 1; /* start next command */ 708 sc->sc_active--; 709 OSIOP_TRACE('d', 'a', status, 0); 710 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 711 TAILQ_REMOVE(&sc->ready_list, acb, chain); 712 OSIOP_TRACE('d', 'r', status, 0); 713 } else { 714 struct osiop_acb *acb2; 715 TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { 716 if (acb2 == acb) { 717 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 718 sc->sc_tinfo[periph->periph_target].lubusy &= 719 ~(1 << periph->periph_lun); 720 sc->sc_active--; 721 break; 722 } 723 } 724 if (acb2 == NULL) { 725 if (acb->chain.tqe_next != NULL) { 726 TAILQ_REMOVE(&sc->ready_list, acb, chain); 727 sc->sc_active--; 728 } else { 729 printf("%s: can't find matching acb\n", 730 sc->sc_dev.dv_xname); 731 #ifdef DDB 732 #if 0 733 Debugger(); 734 #endif 735 #endif 736 } 737 } 738 OSIOP_TRACE('d', 'n', status, 0); 739 } 740 /* Put it on the free list. */ 741 acb->status = ACB_S_FREE; 742 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 743 sc->sc_tinfo[periph->periph_target].cmds++; 744 745 callout_stop(&xs->xs_callout); 746 xs->resid = 0; 747 scsipi_done(xs); 748 749 if (dosched && sc->sc_nexus == NULL) 750 osiop_sched(sc); 751 } 752 753 void 754 osiop_abort(sc, where) 755 struct osiop_softc *sc; 756 const char *where; 757 { 758 759 printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 760 sc->sc_dev.dv_xname, where, 761 osiop_read_1(sc, OSIOP_DSTAT), 762 osiop_read_1(sc, OSIOP_SSTAT0), 763 osiop_read_1(sc, OSIOP_SBCL)); 764 765 /* XXX XXX XXX */ 766 if (sc->sc_active > 0) { 767 sc->sc_active = 0; 768 } 769 } 770 771 void 772 osiop_init(sc) 773 struct osiop_softc *sc; 774 { 775 int i, inhibit_sync, inhibit_disc; 776 777 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 778 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 779 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 780 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 781 782 if (sc->sc_minsync < 25) 783 sc->sc_minsync = 25; 784 785 if (sc->sc_clock_freq <= 25) { 786 sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ 787 sc->sc_tcp[0] = sc->sc_tcp[1]; 788 } else if (sc->sc_clock_freq <= 37) { 789 sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ 790 sc->sc_tcp[0] = sc->sc_tcp[2]; 791 } else if (sc->sc_clock_freq <= 50) { 792 sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ 793 sc->sc_tcp[0] = sc->sc_tcp[3]; 794 } else { 795 sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ 796 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 797 } 798 799 if ((sc->sc_cfflags & 0x10000) != 0) { 800 sc->sc_flags |= OSIOP_NODMA; 801 #ifdef OSIOP_DEBUG 802 printf("%s: DMA disabled; use polling\n", 803 sc->sc_dev.dv_xname); 804 #endif 805 } 806 807 inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ 808 inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ 809 #ifdef OSIOP_DEBUG 810 if (inhibit_sync != 0) 811 printf("%s: Inhibiting synchronous transfer: 0x%02x\n", 812 sc->sc_dev.dv_xname, inhibit_sync); 813 if (inhibit_disc != 0) 814 printf("%s: Inhibiting disconnect: 0x%02x\n", 815 sc->sc_dev.dv_xname, inhibit_disc); 816 #endif 817 for (i = 0; i < OSIOP_NTGT; i++) { 818 if (inhibit_sync & (1 << i)) 819 sc->sc_tinfo[i].flags |= TI_NOSYNC; 820 if (inhibit_disc & (1 << i)) 821 sc->sc_tinfo[i].flags |= TI_NODISC; 822 } 823 824 osiop_resetbus(sc); 825 osiop_reset(sc); 826 } 827 828 void 829 osiop_reset(sc) 830 struct osiop_softc *sc; 831 { 832 struct osiop_acb *acb; 833 int i, s; 834 u_int8_t stat; 835 836 #ifdef OSIOP_DEBUG 837 printf("%s: resetting chip\n", sc->sc_dev.dv_xname); 838 #endif 839 if (sc->sc_flags & OSIOP_ALIVE) 840 osiop_abort(sc, "reset"); 841 842 s = splbio(); 843 844 /* 845 * Reset the chip 846 * XXX - is this really needed? 847 */ 848 849 /* abort current script */ 850 osiop_write_1(sc, OSIOP_ISTAT, 851 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); 852 /* reset chip */ 853 osiop_write_1(sc, OSIOP_ISTAT, 854 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); 855 delay(100); 856 osiop_write_1(sc, OSIOP_ISTAT, 857 osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); 858 delay(100); 859 860 /* 861 * Set up various chip parameters 862 */ 863 osiop_write_1(sc, OSIOP_SCNTL0, 864 OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); 865 osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); 866 osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); 867 osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4); 868 /* don't enable interrupts yet */ 869 osiop_write_1(sc, OSIOP_SIEN, 0x00); 870 osiop_write_1(sc, OSIOP_DIEN, 0x00); 871 osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); 872 osiop_write_1(sc, OSIOP_DWT, 0x00); 873 osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) 874 | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); 875 osiop_write_1(sc, OSIOP_CTEST7, 876 osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); 877 878 /* will need to re-negotiate sync xfers */ 879 for (i = 0; i < OSIOP_NTGT; i++) { 880 sc->sc_tinfo[i].state = NEG_INIT; 881 sc->sc_tinfo[i].period = 0; 882 sc->sc_tinfo[i].offset = 0; 883 } 884 885 stat = osiop_read_1(sc, OSIOP_ISTAT); 886 if (stat & OSIOP_ISTAT_SIP) 887 osiop_read_1(sc, OSIOP_SSTAT0); 888 if (stat & OSIOP_ISTAT_DIP) 889 osiop_read_1(sc, OSIOP_DSTAT); 890 891 splx(s); 892 893 delay(osiop_reset_delay * 1000); 894 895 if (sc->sc_nexus != NULL) { 896 sc->sc_nexus->xs->error = 897 (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? 898 XS_TIMEOUT : XS_RESET; 899 sc->sc_nexus->status = ACB_S_DONE; 900 sc->sc_nexus->flags = 0; 901 osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); 902 } 903 while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 904 acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? 905 XS_TIMEOUT : XS_RESET; 906 acb->status = ACB_S_DONE; 907 acb->flags = 0; 908 osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); 909 } 910 911 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 912 /* enable SCSI and DMA interrupts */ 913 sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ 914 OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; 915 sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | 916 /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; 917 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 918 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 919 } 920 921 void 922 osiop_resetbus(sc) 923 struct osiop_softc *sc; 924 { 925 926 osiop_write_1(sc, OSIOP_SIEN, 0); 927 osiop_write_1(sc, OSIOP_SCNTL1, 928 osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); 929 delay(25); 930 osiop_write_1(sc, OSIOP_SCNTL1, 931 osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); 932 } 933 934 /* 935 * Setup Data Storage for 53C710 and start SCRIPTS processing 936 */ 937 938 void 939 osiop_start(sc) 940 struct osiop_softc *sc; 941 { 942 struct osiop_acb *acb = sc->sc_nexus; 943 struct osiop_ds *ds = acb->ds; 944 struct scsipi_xfer *xs = acb->xs; 945 bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; 946 struct osiop_tinfo *ti; 947 int target = xs->xs_periph->periph_target; 948 int lun = xs->xs_periph->periph_lun; 949 int disconnect, i; 950 951 #ifdef OSIOP_DEBUG 952 if (osiop_debug & DEBUG_DISC && 953 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 954 printf("ACK! osiop was busy: script %p dsa %p active %d\n", 955 sc->sc_script, acb->ds, sc->sc_active); 956 printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 957 osiop_read_1(sc, OSIOP_ISTAT), 958 osiop_read_1(sc, OSIOP_SFBR), 959 osiop_read_1(sc, OSIOP_LCRC), 960 osiop_read_1(sc, OSIOP_SIEN), 961 osiop_read_1(sc, OSIOP_DIEN)); 962 #ifdef DDB 963 #if 0 964 Debugger(); 965 #endif 966 #endif 967 } 968 #endif 969 970 #ifdef OSIOP_DEBUG 971 if (acb->status != ACB_S_READY) 972 panic("osiop_start: non-ready cmd in acb"); 973 #endif 974 975 acb->intstat = 0; 976 977 ds->cmd.count = acb->cmdlen; 978 ds->cmd.addr = acb->cmddma->dm_segs[0].ds_addr; 979 980 ti = &sc->sc_tinfo[target]; 981 ds->scsi_addr = ((1 << 16) << target) | (ti->sxfer << 8); 982 983 disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 && 984 (ti->flags & TI_NODISC) == 0; 985 986 ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); 987 ds->id.count = 1; 988 ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ 989 ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; 990 memset(&ds->data, 0, sizeof(ds->data)); 991 992 /* 993 * Negotiate wide is the initial negotiation state; since the 53c710 994 * doesn't do wide transfers, just begin the synchronous transfer 995 * negotation here. 996 */ 997 if (ti->state == NEG_INIT) { 998 if ((ti->flags & TI_NOSYNC) != 0) { 999 ti->state = NEG_DONE; 1000 ti->sbcl = 0; 1001 ti->sxfer = 0; 1002 ti->period = 0; 1003 ti->offset = 0; 1004 osiop_update_xfer_mode(sc, target); 1005 #ifdef OSIOP_DEBUG 1006 if (osiopsync_debug) 1007 printf("Forcing target %d asynchronous\n", 1008 target); 1009 #endif 1010 } else { 1011 ds->msgbuf[2] = MSG_INVALID; 1012 ds->msgout[1] = MSG_EXTENDED; 1013 ds->msgout[2] = MSG_EXT_SDTR_LEN; 1014 ds->msgout[3] = MSG_EXT_SDTR; 1015 ds->msgout[4] = sc->sc_minsync; 1016 ds->msgout[5] = OSIOP_MAX_OFFSET; 1017 ds->id.count = MSG_EXT_SDTR_LEN + 3; 1018 ti->state = NEG_WAITS; 1019 #ifdef OSIOP_DEBUG 1020 if (osiopsync_debug) 1021 printf("Sending sync request to target %d\n", 1022 target); 1023 #endif 1024 } 1025 } 1026 1027 acb->curaddr = 0; 1028 acb->curlen = 0; 1029 1030 /* 1031 * Build physical DMA addresses for scatter/gather I/O 1032 */ 1033 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1034 for (i = 0; i < datadma->dm_nsegs; i++) { 1035 ds->data[i].count = datadma->dm_segs[i].ds_len; 1036 ds->data[i].addr = datadma->dm_segs[i].ds_addr; 1037 } 1038 } 1039 1040 /* sync script data structure */ 1041 bus_dmamap_sync(sc->sc_dmat, dsdma, 1042 acb->dsoffset, sizeof(struct osiop_ds), 1043 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1044 1045 acb->status = ACB_S_ACTIVE; 1046 1047 /* handle timeout */ 1048 if ((xs->xs_control & XS_CTL_POLL) == 0) { 1049 int timeout = mstohz(acb->xs->timeout); 1050 /* start expire timer */ 1051 if (timeout == 0) 1052 timeout = 1; 1053 callout_reset(&xs->xs_callout, timeout, 1054 osiop_timeout, acb); 1055 } 1056 #ifdef OSIOP_DEBUG 1057 if (osiop_debug & DEBUG_DISC && 1058 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1059 printf("ACK! osiop was busy at start: " 1060 "script %p dsa %p active %d\n", 1061 sc->sc_script, acb->ds, sc->sc_active); 1062 #ifdef DDB 1063 #if 0 1064 Debugger(); 1065 #endif 1066 #endif 1067 } 1068 #endif 1069 if (TAILQ_EMPTY(&sc->nexus_list)) { 1070 if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) 1071 printf("%s: osiop_select while connected?\n", 1072 sc->sc_dev.dv_xname); 1073 osiop_write_4(sc, OSIOP_TEMP, 0); 1074 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1075 osiop_write_4(sc, OSIOP_DSA, 1076 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1077 osiop_write_4(sc, OSIOP_DSP, 1078 sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); 1079 OSIOP_TRACE('s', 1, 0, 0); 1080 } else { 1081 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1082 osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); 1083 OSIOP_TRACE('s', 2, 0, 0); 1084 } else { 1085 OSIOP_TRACE('s', 3, 1086 osiop_read_1(sc, OSIOP_ISTAT), 0); 1087 } 1088 } 1089 #ifdef OSIOP_DEBUG 1090 osiopstarts++; 1091 #endif 1092 } 1093 1094 /* 1095 * Process a DMA or SCSI interrupt from the 53C710 SIOP 1096 */ 1097 1098 int 1099 osiop_checkintr(sc, istat, dstat, sstat0, status) 1100 struct osiop_softc *sc; 1101 u_int8_t istat; 1102 u_int8_t dstat; 1103 u_int8_t sstat0; 1104 int *status; 1105 { 1106 struct osiop_acb *acb = sc->sc_nexus; 1107 struct osiop_ds *ds; 1108 bus_dmamap_t dsdma = sc->sc_dsdma; 1109 bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; 1110 int target = 0; 1111 int dfifo, dbc, intcode, sstat1; 1112 1113 dfifo = osiop_read_1(sc, OSIOP_DFIFO); 1114 dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; 1115 sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); 1116 osiop_write_1(sc, OSIOP_CTEST8, 1117 osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); 1118 while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != 1119 OSIOP_CTEST1_FMT) 1120 ; 1121 osiop_write_1(sc, OSIOP_CTEST8, 1122 osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); 1123 intcode = osiop_read_4(sc, OSIOP_DSPS); 1124 #ifdef OSIOP_DEBUG 1125 osiopints++; 1126 if (osiop_read_4(sc, OSIOP_DSP) != 0 && 1127 (osiop_read_4(sc, OSIOP_DSP) < scraddr || 1128 osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { 1129 printf("%s: dsp not within script dsp %x scripts %lx:%lx", 1130 sc->sc_dev.dv_xname, 1131 osiop_read_4(sc, OSIOP_DSP), 1132 scraddr, scraddr + sizeof(osiop_script)); 1133 printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); 1134 #ifdef DDB 1135 Debugger(); 1136 #endif 1137 } 1138 #endif 1139 OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? 1140 intcode & 0xff : sstat0); 1141 1142 if (acb != NULL) { /* XXX */ 1143 ds = acb->ds; 1144 bus_dmamap_sync(sc->sc_dmat, dsdma, 1145 acb->dsoffset, sizeof(struct osiop_ds), 1146 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1147 #ifdef OSIOP_DEBUG 1148 if (acb->status != ACB_S_ACTIVE) 1149 printf("osiop_checkintr: acb not active (status %d)\n", 1150 acb->status); 1151 #endif 1152 } 1153 1154 1155 if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { 1156 /* Normal completion status, or check condition */ 1157 struct osiop_tinfo *ti; 1158 #ifdef OSIOP_DEBUG 1159 if (osiop_read_4(sc, OSIOP_DSA) != 1160 dsdma->dm_segs[0].ds_addr + acb->dsoffset) { 1161 printf("osiop: invalid dsa: %x %lx\n", 1162 osiop_read_4(sc, OSIOP_DSA), 1163 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1164 panic("*** osiop DSA invalid ***"); 1165 } 1166 #endif 1167 target = acb->xs->xs_periph->periph_target; 1168 ti = &sc->sc_tinfo[target]; 1169 if (ti->state == NEG_WAITS) { 1170 if (ds->msgbuf[1] == MSG_INVALID) 1171 printf("%s: target %d ignored sync request\n", 1172 sc->sc_dev.dv_xname, target); 1173 else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) 1174 printf("%s: target %d rejected sync request\n", 1175 sc->sc_dev.dv_xname, target); 1176 ti->period = 0; 1177 ti->offset = 0; 1178 osiop_update_xfer_mode(sc, target); 1179 ti->state = NEG_DONE; 1180 } 1181 #ifdef OSIOP_DEBUG 1182 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1183 #if 0 1184 printf("ACK! osiop was busy at end: " 1185 "script %p dsa %p\n", &osiop_script, ds); 1186 #ifdef DDB 1187 Debugger(); 1188 #endif 1189 #endif 1190 } 1191 if (ds->msgbuf[0] != MSG_CMDCOMPLETE) 1192 printf("%s: message was not COMMAND COMPLETE: %02x\n", 1193 sc->sc_dev.dv_xname, ds->msgbuf[0]); 1194 #endif 1195 if (!TAILQ_EMPTY(&sc->nexus_list)) 1196 osiop_write_1(sc, OSIOP_DCNTL, 1197 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1198 *status = ds->stat[0]; 1199 acb->status = ACB_S_DONE; 1200 return (1); 1201 } 1202 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { 1203 target = acb->xs->xs_periph->periph_target; 1204 if (ds->msgbuf[1] == MSG_EXTENDED && 1205 ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1206 ds->msgbuf[3] == MSG_EXT_SDTR) { 1207 struct osiop_tinfo *ti = &sc->sc_tinfo[target]; 1208 #ifdef OSIOP_DEBUG 1209 if (osiopsync_debug) 1210 printf("sync msg in: " 1211 "%02x %02x %02x %02x %02x %02x\n", 1212 ds->msgbuf[0], ds->msgbuf[1], 1213 ds->msgbuf[2], ds->msgbuf[3], 1214 ds->msgbuf[4], ds->msgbuf[5]); 1215 #endif 1216 ti->period = ds->msgbuf[4]; 1217 ti->offset = ds->msgbuf[5]; 1218 ti->sxfer = 0; 1219 ti->sbcl = 0; 1220 if (ds->msgbuf[5] != 0) 1221 scsi_period_to_osiop(sc, target); 1222 osiop_update_xfer_mode(sc, target); 1223 1224 bus_dmamap_sync(sc->sc_dmat, dsdma, 1225 acb->dsoffset, sizeof(struct osiop_ds), 1226 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1227 osiop_write_1(sc, OSIOP_SXFER, ti->sxfer); 1228 osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); 1229 if (ti->state == NEG_WAITS) { 1230 ti->state = NEG_DONE; 1231 osiop_write_4(sc, OSIOP_DSP, 1232 scraddr + Ent_clear_ack); 1233 return (0); 1234 } 1235 osiop_write_1(sc, OSIOP_DCNTL, 1236 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1237 ti->state = NEG_DONE; 1238 return (0); 1239 } 1240 /* XXX - not SDTR message */ 1241 } 1242 if (sstat0 & OSIOP_SSTAT0_M_A) { 1243 /* Phase mismatch */ 1244 #ifdef OSIOP_DEBUG 1245 osiopphmm++; 1246 if (acb == NULL) 1247 printf("%s: Phase mismatch with no active command?\n", 1248 sc->sc_dev.dv_xname); 1249 #endif 1250 if (acb->datalen > 0) { 1251 int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; 1252 if (sstat1 & OSIOP_SSTAT1_ORF) 1253 adjust++; 1254 if (sstat1 & OSIOP_SSTAT1_OLF) 1255 adjust++; 1256 acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; 1257 acb->curlen = dbc + adjust; 1258 #ifdef OSIOP_DEBUG 1259 if (osiop_debug & DEBUG_DISC) { 1260 printf("Phase mismatch: curaddr %lx " 1261 "curlen %lx dfifo %x dbc %x sstat1 %x " 1262 "adjust %x sbcl %x starts %d acb %p\n", 1263 acb->curaddr, acb->curlen, dfifo, 1264 dbc, sstat1, adjust, 1265 osiop_read_1(sc, OSIOP_SBCL), 1266 osiopstarts, acb); 1267 if (ds->data[1].count != 0) { 1268 int i; 1269 for (i = 0; ds->data[i].count != 0; i++) 1270 printf("chain[%d] " 1271 "addr %x len %x\n", i, 1272 ds->data[i].addr, 1273 ds->data[i].count); 1274 } 1275 bus_dmamap_sync(sc->sc_dmat, dsdma, 1276 acb->dsoffset, sizeof(struct osiop_ds), 1277 BUS_DMASYNC_PREREAD | 1278 BUS_DMASYNC_PREWRITE); 1279 } 1280 #endif 1281 } 1282 #ifdef OSIOP_DEBUG 1283 OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), 1284 osiop_read_4(sc, OSIOP_DSP) >> 8, 1285 osiop_read_4(sc, OSIOP_DSP)); 1286 if (osiop_debug & DEBUG_PHASE) 1287 printf("Phase mismatch: %x dsp +%lx dcmd %x\n", 1288 osiop_read_1(sc, OSIOP_SBCL), 1289 osiop_read_4(sc, OSIOP_DSP) - scraddr, 1290 osiop_read_4(sc, OSIOP_DBC)); 1291 #endif 1292 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { 1293 printf("Phase mismatch: " 1294 "REQ not asserted! %02x dsp %x\n", 1295 osiop_read_1(sc, OSIOP_SBCL), 1296 osiop_read_4(sc, OSIOP_DSP)); 1297 #if defined(OSIOP_DEBUG) && defined(DDB) 1298 /*Debugger(); XXX is*/ 1299 #endif 1300 } 1301 switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { 1302 case DATA_OUT_PHASE: 1303 case DATA_IN_PHASE: 1304 case STATUS_PHASE: 1305 case COMMAND_PHASE: 1306 case MSG_IN_PHASE: 1307 case MSG_OUT_PHASE: 1308 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1309 break; 1310 default: 1311 printf("%s: invalid phase\n", sc->sc_dev.dv_xname); 1312 goto bad_phase; 1313 } 1314 return (0); 1315 } 1316 if (sstat0 & OSIOP_SSTAT0_STO) { 1317 /* Select timed out */ 1318 #ifdef OSIOP_DEBUG 1319 if (acb == NULL) 1320 printf("%s: Select timeout with no active command?\n", 1321 sc->sc_dev.dv_xname); 1322 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1323 printf("ACK! osiop was busy at timeout: " 1324 "script %p dsa %lx\n", sc->sc_script, 1325 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1326 printf(" sbcl %x sdid %x " 1327 "istat %x dstat %x sstat0 %x\n", 1328 osiop_read_1(sc, OSIOP_SBCL), 1329 osiop_read_1(sc, OSIOP_SDID), 1330 istat, dstat, sstat0); 1331 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { 1332 printf("Yikes, it's not busy now!\n"); 1333 #if 0 1334 *status = SCSI_OSIOP_NOSTATUS; 1335 if (!TAILQ_EMPTY(&sc->nexus_list)) 1336 osiop_write_4(sc, OSIOP_DSP, 1337 scraddr + Ent_wait_reselect); 1338 return (1); 1339 #endif 1340 } 1341 #if 0 1342 osiop_write_1(sc, OSIOP_DCNTL, 1343 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1344 #endif 1345 #ifdef DDB 1346 Debugger(); 1347 #endif 1348 return (0); 1349 } 1350 #endif 1351 acb->status = ACB_S_DONE; 1352 *status = SCSI_OSIOP_NOSTATUS; 1353 acb->xs->error = XS_SELTIMEOUT; 1354 if (!TAILQ_EMPTY(&sc->nexus_list)) 1355 osiop_write_4(sc, OSIOP_DSP, 1356 scraddr + Ent_wait_reselect); 1357 return (1); 1358 } 1359 if (acb != NULL) 1360 target = acb->xs->xs_periph->periph_target; 1361 else 1362 target = sc->sc_id; 1363 if (sstat0 & OSIOP_SSTAT0_UDC) { 1364 #ifdef OSIOP_DEBUG 1365 if (acb == NULL) 1366 printf("%s: Unexpected disconnect " 1367 "with no active command?\n", sc->sc_dev.dv_xname); 1368 printf("%s: target %d disconnected unexpectedly\n", 1369 sc->sc_dev.dv_xname, target); 1370 #endif 1371 #if 0 1372 osiop_abort(sc, "osiop_chkintr"); 1373 #endif 1374 *status = SCSI_CHECK; 1375 if (!TAILQ_EMPTY(&sc->nexus_list)) 1376 osiop_write_4(sc, OSIOP_DSP, 1377 scraddr + Ent_wait_reselect); 1378 return (acb != NULL); 1379 } 1380 if (dstat & OSIOP_DSTAT_SIR && 1381 (intcode == A_int_disc || intcode == A_int_disc_wodp)) { 1382 /* Disconnect */ 1383 if (acb == NULL) { 1384 printf("%s: Disconnect with no active command?\n", 1385 sc->sc_dev.dv_xname); 1386 return (0); 1387 } 1388 #ifdef OSIOP_DEBUG 1389 if (osiop_debug & DEBUG_DISC) { 1390 printf("%s: ID %02x disconnected TEMP %x (+%lx) " 1391 "curaddr %lx curlen %lx buf %x len %x dfifo %x " 1392 "dbc %x sstat1 %x starts %d acb %p\n", 1393 sc->sc_dev.dv_xname, 1 << target, 1394 osiop_read_4(sc, OSIOP_TEMP), 1395 (osiop_read_4(sc, OSIOP_TEMP) != 0) ? 1396 osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, 1397 acb->curaddr, acb->curlen, 1398 ds->data[0].addr, ds->data[0].count, 1399 dfifo, dbc, sstat1, osiopstarts, acb); 1400 bus_dmamap_sync(sc->sc_dmat, dsdma, 1401 acb->dsoffset, sizeof(struct osiop_ds), 1402 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1403 } 1404 #endif 1405 /* 1406 * XXXX need to update curaddr/curlen to reflect 1407 * current data transferred. If device disconnected in 1408 * the middle of a DMA block, they should already be set 1409 * by the phase change interrupt. If the disconnect 1410 * occurs on a DMA block boundary, we have to figure out 1411 * which DMA block it was. 1412 */ 1413 if (acb->datalen > 0 && 1414 osiop_read_4(sc, OSIOP_TEMP) != 0) { 1415 long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; 1416 1417 if (acb->curlen != 0 && 1418 acb->curlen != ds->data[0].count) 1419 printf("%s: curaddr/curlen already set? " 1420 "n %lx iob %lx/%lx chain[0] %x/%x\n", 1421 sc->sc_dev.dv_xname, n, 1422 acb->curaddr, acb->curlen, 1423 ds->data[0].addr, ds->data[0].count); 1424 if (n < Ent_datain) 1425 n = (n - Ent_dataout) / 16; 1426 else 1427 n = (n - Ent_datain) / 16; 1428 if (n <= 0 && n > OSIOP_NSG) 1429 printf("TEMP invalid %ld\n", n); 1430 else { 1431 acb->curaddr = ds->data[n].addr; 1432 acb->curlen = ds->data[n].count; 1433 } 1434 #ifdef OSIOP_DEBUG 1435 if (osiop_debug & DEBUG_DISC) { 1436 printf("%s: TEMP offset %ld", 1437 sc->sc_dev.dv_xname, n); 1438 printf(" curaddr %lx curlen %lx\n", 1439 acb->curaddr, acb->curlen); 1440 } 1441 #endif 1442 } 1443 /* 1444 * If data transfer was interrupted by disconnect, curaddr 1445 * and curlen should reflect the point of interruption. 1446 * Adjust the DMA chain so that the data transfer begins 1447 * at the appropriate place upon reselection. 1448 * XXX This should only be done on save data pointer message? 1449 */ 1450 if (acb->curlen > 0) { 1451 int i, j; 1452 1453 #ifdef OSIOP_DEBUG 1454 if (osiop_debug & DEBUG_DISC) 1455 printf("%s: adjusting DMA chain\n", 1456 sc->sc_dev.dv_xname); 1457 if (intcode == A_int_disc_wodp) 1458 printf("%s: ID %02x disconnected " 1459 "without Save Data Pointers\n", 1460 sc->sc_dev.dv_xname, 1 << target); 1461 #endif 1462 for (i = 0; i < OSIOP_NSG; i++) { 1463 if (ds->data[i].count == 0) 1464 break; 1465 if (acb->curaddr >= ds->data[i].addr && 1466 acb->curaddr < 1467 (ds->data[i].addr + ds->data[i].count)) 1468 break; 1469 } 1470 if (i >= OSIOP_NSG || ds->data[i].count == 0) { 1471 printf("couldn't find saved data pointer: " 1472 "curaddr %lx curlen %lx i %d\n", 1473 acb->curaddr, acb->curlen, i); 1474 #ifdef DDB 1475 Debugger(); 1476 #endif 1477 } 1478 #ifdef OSIOP_DEBUG 1479 if (osiop_debug & DEBUG_DISC) 1480 printf(" chain[0]: %x/%x -> %lx/%lx\n", 1481 ds->data[0].addr, ds->data[0].count, 1482 acb->curaddr, acb->curlen); 1483 #endif 1484 ds->data[0].addr = acb->curaddr; 1485 ds->data[0].count = acb->curlen; 1486 for (j = 1, i = i + 1; 1487 i < OSIOP_NSG && ds->data[i].count > 0; 1488 i++, j++) { 1489 #ifdef OSIOP_DEBUG 1490 if (osiop_debug & DEBUG_DISC) 1491 printf(" chain[%d]: %x/%x -> %x/%x\n", j, 1492 ds->data[j].addr, ds->data[j].count, 1493 ds->data[i].addr, ds->data[i].count); 1494 #endif 1495 ds->data[j].addr = ds->data[i].addr; 1496 ds->data[j].count = ds->data[i].count; 1497 } 1498 if (j < OSIOP_NSG) { 1499 ds->data[j].addr = 0; 1500 ds->data[j].count = 0; 1501 } 1502 bus_dmamap_sync(sc->sc_dmat, dsdma, 1503 acb->dsoffset, sizeof(struct osiop_ds), 1504 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1505 } 1506 sc->sc_tinfo[target].dconns++; 1507 /* 1508 * add nexus to waiting list 1509 * clear nexus 1510 * try to start another command for another target/lun 1511 */ 1512 acb->intstat = sc->sc_flags & OSIOP_INTSOFF; 1513 TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); 1514 sc->sc_nexus = NULL; /* no current device */ 1515 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); 1516 /* XXXX start another command ? */ 1517 if (!TAILQ_EMPTY(&sc->ready_list)) 1518 osiop_sched(sc); 1519 return (0); 1520 } 1521 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { 1522 int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; 1523 int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; 1524 #ifdef OSIOP_DEBUG 1525 u_int8_t resmsg; 1526 #endif 1527 1528 /* Reconnect */ 1529 /* XXXX save current SBCL */ 1530 sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); 1531 #ifdef OSIOP_DEBUG 1532 if (osiop_debug & DEBUG_DISC) 1533 printf("%s: target ID %02x reselected dsps %x\n", 1534 sc->sc_dev.dv_xname, reselid, intcode); 1535 resmsg = osiop_read_1(sc, OSIOP_SFBR); 1536 if (!MSG_ISIDENTIFY(resmsg)) 1537 printf("%s: Reselect message in was not identify: " 1538 "%02x\n", sc->sc_dev.dv_xname, resmsg); 1539 #endif 1540 if (sc->sc_nexus != NULL) { 1541 struct scsipi_periph *periph = 1542 sc->sc_nexus->xs->xs_periph; 1543 #ifdef OSIOP_DEBUG 1544 if (osiop_debug & DEBUG_DISC) 1545 printf("%s: reselect ID %02x w/active\n", 1546 sc->sc_dev.dv_xname, reselid); 1547 #endif 1548 TAILQ_INSERT_HEAD(&sc->ready_list, 1549 sc->sc_nexus, chain); 1550 sc->sc_tinfo[periph->periph_target].lubusy 1551 &= ~(1 << periph->periph_lun); 1552 sc->sc_active--; 1553 } 1554 /* 1555 * locate acb of reselecting device 1556 * set sc->sc_nexus to acb 1557 */ 1558 TAILQ_FOREACH(acb, &sc->nexus_list, chain) { 1559 struct scsipi_periph *periph = acb->xs->xs_periph; 1560 if (reselid != periph->periph_target || 1561 reselun != periph->periph_lun) { 1562 continue; 1563 } 1564 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1565 sc->sc_nexus = acb; 1566 sc->sc_flags |= acb->intstat; 1567 acb->intstat = 0; 1568 osiop_write_4(sc, OSIOP_DSA, 1569 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1570 osiop_write_1(sc, OSIOP_SXFER, 1571 sc->sc_tinfo[reselid].sxfer); 1572 osiop_write_1(sc, OSIOP_SBCL, 1573 sc->sc_tinfo[reselid].sbcl); 1574 break; 1575 } 1576 if (acb == NULL) { 1577 printf("%s: target ID %02x reselect nexus_list %p\n", 1578 sc->sc_dev.dv_xname, reselid, 1579 TAILQ_FIRST(&sc->nexus_list)); 1580 panic("unable to find reselecting device"); 1581 } 1582 1583 osiop_write_4(sc, OSIOP_TEMP, 0); 1584 osiop_write_1(sc, OSIOP_DCNTL, 1585 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1586 return (0); 1587 } 1588 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { 1589 #ifdef OSIOP_DEBUG 1590 u_int8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); 1591 1592 /* reselect was interrupted (by Sig_P or select) */ 1593 if (osiop_debug & DEBUG_DISC || 1594 (ctest2 & OSIOP_CTEST2_SIGP) == 0) 1595 printf("%s: reselect interrupted (Sig_P?) " 1596 "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1597 sc->sc_dev.dv_xname, 1598 osiop_read_1(sc, OSIOP_SCNTL1), ctest2, 1599 osiop_read_1(sc, OSIOP_SFBR), istat, 1600 osiop_read_1(sc, OSIOP_ISTAT)); 1601 #endif 1602 /* XXX assumes it was not select */ 1603 if (sc->sc_nexus == NULL) { 1604 #ifdef OSIOP_DEBUG 1605 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1606 sc->sc_dev.dv_xname); 1607 #if 0 1608 osiop_dump(sc); 1609 #ifdef DDB 1610 Debugger(); 1611 #endif 1612 #endif 1613 #endif 1614 osiop_write_1(sc, OSIOP_DCNTL, 1615 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1616 return (0); 1617 } 1618 target = sc->sc_nexus->xs->xs_periph->periph_target; 1619 osiop_write_4(sc, OSIOP_TEMP, 0); 1620 osiop_write_4(sc, OSIOP_DSA, 1621 dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); 1622 osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[target].sxfer); 1623 osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[target].sbcl); 1624 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); 1625 return (0); 1626 } 1627 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { 1628 /* Unrecognized message in byte */ 1629 if (acb == NULL) 1630 printf("%s: Bad message-in with no active command?\n", 1631 sc->sc_dev.dv_xname); 1632 printf("%s: Unrecognized message in data " 1633 "sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname, 1634 osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], 1635 osiop_read_1(sc, OSIOP_SBCL)); 1636 /* what should be done here? */ 1637 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1638 bus_dmamap_sync(sc->sc_dmat, dsdma, 1639 acb->dsoffset, sizeof(struct osiop_ds), 1640 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1641 return (0); 1642 } 1643 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { 1644 /* Status phase wasn't followed by message in phase? */ 1645 printf("%s: Status phase not followed by message in phase? " 1646 "sbcl %x sbdl %x\n", sc->sc_dev.dv_xname, 1647 osiop_read_1(sc, OSIOP_SBCL), 1648 osiop_read_1(sc, OSIOP_SBDL)); 1649 if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { 1650 /* It is now, just continue the script? */ 1651 osiop_write_1(sc, OSIOP_DCNTL, 1652 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1653 return (0); 1654 } 1655 } 1656 if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { 1657 printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1658 intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1659 osiop_read_1(sc, OSIOP_SBCL)); 1660 osiop_reset(sc); 1661 *status = SCSI_OSIOP_NOSTATUS; 1662 return (0); /* osiop_reset has cleaned up */ 1663 } 1664 if (sstat0 & OSIOP_SSTAT0_SGE) 1665 printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname); 1666 if (sstat0 & OSIOP_SSTAT0_PAR) 1667 printf("%s: Parity Error\n", sc->sc_dev.dv_xname); 1668 if (dstat & OSIOP_DSTAT_IID) 1669 printf("%s: Invalid instruction detected\n", 1670 sc->sc_dev.dv_xname); 1671 bad_phase: 1672 /* 1673 * temporary panic for unhandled conditions 1674 * displays various things about the 53C710 status and registers 1675 * then panics. 1676 * XXXX need to clean this up to print out the info, reset, and continue 1677 */ 1678 printf("osiop_chkintr: target %x ds %p\n", target, ds); 1679 printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, 1680 sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset, 1681 osiop_read_4(sc, OSIOP_DSP), 1682 osiop_read_4(sc, OSIOP_DBC)); 1683 printf("osiop_chkintr: istat %x dstat %x sstat0 %x " 1684 "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1685 istat, dstat, sstat0, intcode, 1686 osiop_read_4(sc, OSIOP_DSA), 1687 osiop_read_1(sc, OSIOP_SBCL), 1688 ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1689 osiop_read_1(sc, OSIOP_SFBR)); 1690 #ifdef OSIOP_DEBUG 1691 if (osiop_debug & DEBUG_DMA) 1692 panic("osiop_chkintr: **** temp ****"); 1693 #endif 1694 #ifdef DDB 1695 Debugger(); 1696 #endif 1697 osiop_reset(sc); /* hard reset */ 1698 *status = SCSI_OSIOP_NOSTATUS; 1699 acb->status = ACB_S_DONE; 1700 return (0); /* osiop_reset cleaned up */ 1701 } 1702 1703 void 1704 osiop_select(sc) 1705 struct osiop_softc *sc; 1706 { 1707 struct osiop_acb *acb = sc->sc_nexus; 1708 1709 #ifdef OSIOP_DEBUG 1710 if (osiop_debug & DEBUG_CMD) 1711 printf("%s: select ", sc->sc_dev.dv_xname); 1712 #endif 1713 1714 if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) { 1715 sc->sc_flags |= OSIOP_INTSOFF; 1716 sc->sc_flags &= ~OSIOP_INTDEFER; 1717 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1718 osiop_write_1(sc, OSIOP_SIEN, 0); 1719 osiop_write_1(sc, OSIOP_DIEN, 0); 1720 } 1721 #if 0 1722 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 1723 sc->sc_flags &= ~OSIOP_INTSOFF; 1724 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1725 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1726 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1727 } 1728 #endif 1729 } 1730 #ifdef OSIOP_DEBUG 1731 if (osiop_debug & DEBUG_CMD) 1732 printf("osiop_select: target %x cmd %02x ds %p\n", 1733 acb->xs->xs_periph->periph_target, 1734 acb->xs->cmd->opcode, sc->sc_nexus->ds); 1735 #endif 1736 1737 osiop_start(sc); 1738 1739 return; 1740 } 1741 1742 /* 1743 * 53C710 interrupt handler 1744 */ 1745 1746 void 1747 osiop_intr(sc) 1748 struct osiop_softc *sc; 1749 { 1750 int status, s; 1751 u_int8_t istat, dstat, sstat0; 1752 1753 s = splbio(); 1754 1755 istat = sc->sc_istat; 1756 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 1757 splx(s); 1758 return; 1759 } 1760 1761 /* Got a valid interrupt on this device; set by MD handler */ 1762 dstat = sc->sc_dstat; 1763 sstat0 = sc->sc_sstat0; 1764 sc->sc_istat = 0; 1765 #ifdef OSIOP_DEBUG 1766 if (!sc->sc_active) { 1767 /* XXX needs sync */ 1768 printf("%s: spurious interrupt? " 1769 "istat %x dstat %x sstat0 %x nexus %p status %x\n", 1770 sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus, 1771 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); 1772 } 1773 #endif 1774 1775 #ifdef OSIOP_DEBUG 1776 if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { 1777 /* XXX needs sync */ 1778 printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " 1779 "sbcl %x dsp %x dcmd %x sts %x msg %x\n", 1780 sc->sc_dev.dv_xname, 1781 istat, dstat, sstat0, 1782 osiop_read_4(sc, OSIOP_DSPS), 1783 osiop_read_1(sc, OSIOP_SBCL), 1784 osiop_read_4(sc, OSIOP_DSP), 1785 osiop_read_4(sc, OSIOP_DBC), 1786 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, 1787 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); 1788 } 1789 #endif 1790 if (sc->sc_flags & OSIOP_INTDEFER) { 1791 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 1792 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1793 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1794 } 1795 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 1796 #if 0 1797 if (status == SCSI_OSIOP_NOSTATUS) 1798 printf("osiop_intr: no valid status \n"); 1799 #endif 1800 if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != 1801 OSIOP_INTSOFF) { 1802 #if 0 1803 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1804 struct scsipi_periph *periph; 1805 1806 periph = sc->sc_nexus->xs->xs_periph; 1807 printf("%s: SCSI bus busy at completion" 1808 " targ %d sbcl %02x sfbr %x lcrc " 1809 "%02x dsp +%x\n", sc->sc_dev.dv_xname, 1810 periph->periphtarget, 1811 osiop_read_1(sc, OSIOP_SBCL), 1812 osiop_read_1(sc, OSIOP_SFBR), 1813 osiop_read_1(sc, OSIOP_LCRC), 1814 osiop_read_4(sc, OSIOP_DSP) - 1815 sc->sc_scrdma->dm_segs[0].ds_addr); 1816 } 1817 #endif 1818 osiop_scsidone(sc->sc_nexus, status); 1819 } 1820 } 1821 splx(s); 1822 } 1823 1824 void 1825 osiop_update_xfer_mode(sc, target) 1826 struct osiop_softc *sc; 1827 int target; 1828 { 1829 struct osiop_tinfo *tinfo = &sc->sc_tinfo[target]; 1830 struct scsipi_xfer_mode xm; 1831 1832 xm.xm_target = target; 1833 xm.xm_mode = 0; 1834 xm.xm_period = 0; 1835 xm.xm_offset = 0; 1836 1837 if (tinfo->period) { 1838 xm.xm_mode |= PERIPH_CAP_SYNC; 1839 xm.xm_period = tinfo->period; 1840 xm.xm_offset = tinfo->offset; 1841 } 1842 1843 scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 1844 } 1845 1846 /* 1847 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1848 * not be correct for other 53c710 boards. 1849 * 1850 */ 1851 void 1852 scsi_period_to_osiop(sc, target) 1853 struct osiop_softc *sc; 1854 int target; 1855 { 1856 int period, offset, sxfer, sbcl; 1857 #ifdef DEBUG_SYNC 1858 int i; 1859 #endif 1860 1861 period = sc->sc_tinfo[target].period; 1862 offset = sc->sc_tinfo[target].offset; 1863 #ifdef DEBUG_SYNC 1864 sxfer = 0; 1865 if (offset <= OSIOP_MAX_OFFSET) 1866 sxfer = offset; 1867 for (i = 0; i < sizeof(sync_tab) / sizeof(sync_tab[0]); i++) { 1868 if (period <= sync_tab[i].p) { 1869 sxfer |= sync_tab[i].r & 0x70; 1870 sbcl = sync_tab[i].r & 0x03; 1871 break; 1872 } 1873 } 1874 printf("osiop sync old: osiop_sxfr %02x, osiop_sbcl %02x\n", 1875 sxfer, sbcl); 1876 #endif 1877 for (sbcl = 1; sbcl < 4; sbcl++) { 1878 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1879 if (sxfer >= 0 && sxfer <= 7) 1880 break; 1881 } 1882 if (sbcl > 3) { 1883 printf("osiop sync: unable to compute sync params " 1884 "for period %d ns\n", period * 4); 1885 /* 1886 * XXX need to pick a value we can do and renegotiate 1887 */ 1888 sxfer = sbcl = 0; 1889 } else { 1890 sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? 1891 offset : OSIOP_MAX_OFFSET); 1892 #ifdef DEBUG_SYNC 1893 printf("osiop sync: params for period %dns: sxfer %x sbcl %x", 1894 period * 4, sxfer, sbcl); 1895 printf(" actual period %dns\n", 1896 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1897 #endif 1898 } 1899 sc->sc_tinfo[target].sxfer = sxfer; 1900 sc->sc_tinfo[target].sbcl = sbcl; 1901 #ifdef DEBUG_SYNC 1902 printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); 1903 #endif 1904 } 1905 1906 void 1907 osiop_timeout(arg) 1908 void *arg; 1909 { 1910 struct osiop_acb *acb = arg; 1911 struct scsipi_xfer *xs = acb->xs; 1912 struct osiop_softc *sc = acb->sc; 1913 int s; 1914 1915 scsipi_printaddr(xs->xs_periph); 1916 printf("command timeout\n"); 1917 1918 s = splbio(); 1919 /* reset the scsi bus */ 1920 osiop_resetbus(sc); 1921 1922 /* deactivate callout */ 1923 callout_stop(&xs->xs_callout); 1924 acb->flags |= ACB_F_TIMEOUT; 1925 osiop_reset(sc); 1926 splx(s); 1927 return; 1928 } 1929 1930 #ifdef OSIOP_DEBUG 1931 1932 #if OSIOP_TRACE_SIZE 1933 void 1934 osiop_dump_trace() 1935 { 1936 int i; 1937 1938 printf("osiop trace: next index %d\n", osiop_trix); 1939 i = osiop_trix; 1940 do { 1941 printf("%3d: '%c' %02x %02x %02x\n", i, 1942 osiop_trbuf[i], osiop_trbuf[i + 1], 1943 osiop_trbuf[i + 2], osiop_trbuf[i + 3]); 1944 i = (i + 4) & (OSIOP_TRACE_SIZE - 1); 1945 } while (i != osiop_trix); 1946 } 1947 #endif 1948 1949 void 1950 osiop_dump_acb(acb) 1951 struct osiop_acb *acb; 1952 { 1953 u_int8_t *b; 1954 int i; 1955 1956 printf("acb@%p ", acb); 1957 if (acb->xs == NULL) { 1958 printf("<unused>\n"); 1959 return; 1960 } 1961 1962 b = (u_int8_t *)&acb->xs->cmd; 1963 printf("(%d:%d) status %2x cmdlen %2ld cmd ", 1964 acb->xs->xs_periph->periph_target, 1965 acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen); 1966 for (i = acb->cmdlen; i > 0; i--) 1967 printf(" %02x", *b++); 1968 printf("\n"); 1969 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1970 acb->xs->datalen); 1971 printf("va %p:%lx ", acb->data, acb->datalen); 1972 printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); 1973 } 1974 1975 void 1976 osiop_dump(sc) 1977 struct osiop_softc *sc; 1978 { 1979 struct osiop_acb *acb; 1980 int i, s; 1981 1982 s = splbio(); 1983 #if OSIOP_TRACE_SIZE 1984 osiop_dump_trace(); 1985 #endif 1986 printf("%s@%p istat %02x\n", 1987 sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT)); 1988 if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { 1989 printf("Free list:\n"); 1990 while (acb) { 1991 osiop_dump_acb(acb); 1992 acb = TAILQ_NEXT(acb, chain); 1993 } 1994 } 1995 if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { 1996 printf("Ready list:\n"); 1997 while (acb) { 1998 osiop_dump_acb(acb); 1999 acb = TAILQ_NEXT(acb, chain); 2000 } 2001 } 2002 if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 2003 printf("Nexus list:\n"); 2004 while (acb) { 2005 osiop_dump_acb(acb); 2006 acb = TAILQ_NEXT(acb, chain); 2007 } 2008 } 2009 if (sc->sc_nexus) { 2010 printf("Nexus:\n"); 2011 osiop_dump_acb(sc->sc_nexus); 2012 } 2013 for (i = 0; i < OSIOP_NTGT; i++) { 2014 if (sc->sc_tinfo[i].cmds > 2) { 2015 printf("tgt %d: cmds %d disc %d lubusy %x\n", 2016 i, sc->sc_tinfo[i].cmds, 2017 sc->sc_tinfo[i].dconns, 2018 sc->sc_tinfo[i].lubusy); 2019 } 2020 } 2021 splx(s); 2022 } 2023 #endif 2024
Indexes created Wed Sep 24 15:09:51 GMT 2025