osiop.c revision 1.4
1 /* $NetBSD: osiop.c,v 1.4 2001/06/09 12:59:50 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Copyright (c) 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 /* #define OSIOP_DEBUG */ 79 80 #include "opt_ddb.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/device.h> 85 #include <sys/malloc.h> 86 #include <sys/buf.h> 87 #include <sys/kernel.h> 88 89 #include <uvm/uvm_extern.h> 90 91 #include <dev/scsipi/scsi_all.h> 92 #include <dev/scsipi/scsipi_all.h> 93 #include <dev/scsipi/scsiconf.h> 94 #include <dev/scsipi/scsi_message.h> 95 96 #include <machine/cpu.h> 97 #include <machine/bus.h> 98 99 #include <dev/ic/osiopreg.h> 100 #include <dev/ic/osiopvar.h> 101 102 /* 53C710 script */ 103 #include <dev/microcode/siop/osiop.out> 104 105 void osiop_attach(struct osiop_softc *); 106 void osiop_minphys(struct buf *); 107 void osiop_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 108 void *); 109 void osiop_poll(struct osiop_softc *, struct osiop_acb *); 110 void osiop_sched(struct osiop_softc *); 111 void osiop_scsidone(struct osiop_acb *, int); 112 void osiop_abort(struct osiop_softc *, const char *); 113 void osiop_init(struct osiop_softc *); 114 void osiop_reset(struct osiop_softc *); 115 void osiop_resetbus(struct osiop_softc *); 116 void osiop_start(struct osiop_softc *); 117 int osiop_checkintr(struct osiop_softc *, u_int8_t, u_int8_t, u_int8_t, int *); 118 void osiop_select(struct osiop_softc *); 119 void scsi_period_to_osiop(struct osiop_softc *, int); 120 void osiop_timeout(void *); 121 122 int osiop_reset_delay = 250; /* delay after reset, in milleseconds */ 123 124 #ifdef OSIOP_DEBUG_SYNC 125 /* 126 * sync period transfer lookup - only valid for 66MHz clock 127 */ 128 static struct { 129 u_int8_t p; /* period from sync request message */ 130 u_int8_t r; /* siop_period << 4 | sbcl */ 131 } sync_tab[] = { 132 { 60/4, 0<<4 | 1}, 133 { 76/4, 1<<4 | 1}, 134 { 92/4, 2<<4 | 1}, 135 { 92/4, 0<<4 | 2}, 136 {108/4, 3<<4 | 1}, 137 {116/4, 1<<4 | 2}, 138 {120/4, 4<<4 | 1}, 139 {120/4, 0<<4 | 3}, 140 {136/4, 5<<4 | 1}, 141 {140/4, 2<<4 | 2}, 142 {152/4, 6<<4 | 1}, 143 {152/4, 1<<4 | 3}, 144 {164/4, 3<<4 | 2}, 145 {168/4, 7<<4 | 1}, 146 {180/4, 2<<4 | 3}, 147 {184/4, 4<<4 | 2}, 148 {208/4, 5<<4 | 2}, 149 {212/4, 3<<4 | 3}, 150 {232/4, 6<<4 | 2}, 151 {240/4, 4<<4 | 3}, 152 {256/4, 7<<4 | 2}, 153 {272/4, 5<<4 | 3}, 154 {300/4, 6<<4 | 3}, 155 {332/4, 7<<4 | 3} 156 }; 157 #endif 158 159 #ifdef OSIOP_DEBUG 160 #define DEBUG_DMA 0x01 161 #define DEBUG_INT 0x02 162 #define DEBUG_PHASE 0x04 163 #define DEBUG_UNEXCEPT 0x08 164 #define DEBUG_DISC 0x10 165 #define DEBUG_CMD 0x20 166 #define DEBUG_ALL 0xff 167 int osiop_debug = 0; /*DEBUG_ALL;*/ 168 int osiopsync_debug = 0; 169 int osiopdma_hits = 1; 170 int osiopstarts = 0; 171 int osiopints = 0; 172 int osiopphmm = 0; 173 int osiop_trix = 0; 174 #define OSIOP_TRACE_SIZE 128 175 #define OSIOP_TRACE(a,b,c,d) do { \ 176 osiop_trbuf[osiop_trix + 0] = (a); \ 177 osiop_trbuf[osiop_trix + 1] = (b); \ 178 osiop_trbuf[osiop_trix + 2] = (c); \ 179 osiop_trbuf[osiop_trix + 3] = (d); \ 180 osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \ 181 } while (0) 182 u_int8_t osiop_trbuf[OSIOP_TRACE_SIZE]; 183 void osiop_dump_trace(void); 184 void osiop_dump_acb(struct osiop_acb *); 185 void osiop_dump(struct osiop_softc *); 186 #else 187 #define OSIOP_TRACE(a,b,c,d) 188 #endif 189 190 void 191 osiop_attach(sc) 192 struct osiop_softc *sc; 193 { 194 struct osiop_acb *acb; 195 bus_dma_segment_t seg; 196 int nseg; 197 int i, err; 198 199 /* 200 * Allocate and map DMA-safe memory for the script. 201 */ 202 err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 203 &seg, 1, &nseg, BUS_DMA_NOWAIT); 204 if (err) { 205 printf(": failed to allocate script memory, err=%d\n", err); 206 return; 207 } 208 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE, 209 (caddr_t *)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 210 if (err) { 211 printf(": failed to map script memory, err=%d\n", err); 212 return; 213 } 214 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 215 BUS_DMA_NOWAIT, &sc->sc_scrdma); 216 if (err) { 217 printf(": failed to create script map, err=%d\n", err); 218 return; 219 } 220 err = bus_dmamap_load(sc->sc_dmat, sc->sc_scrdma, 221 sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 222 if (err) { 223 printf(": failed to load script map, err=%d\n", err); 224 return; 225 } 226 227 /* 228 * Copy and sync script 229 */ 230 memcpy(sc->sc_script, osiop_script, sizeof(osiop_script)); 231 bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script), 232 BUS_DMASYNC_PREWRITE); 233 234 /* 235 * Allocate and map DMA-safe memory for the script data structure. 236 */ 237 err = bus_dmamem_alloc(sc->sc_dmat, 238 sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0, 239 &seg, 1, &nseg, BUS_DMA_NOWAIT); 240 if (err) { 241 printf(": failed to allocate ds memory, err=%d\n", err); 242 return; 243 } 244 err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, 245 sizeof(struct osiop_ds) * OSIOP_NACB, (caddr_t *)&sc->sc_ds, 246 BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 247 if (err) { 248 printf(": failed to map ds memory, err=%d\n", err); 249 return; 250 } 251 err = bus_dmamap_create(sc->sc_dmat, 252 sizeof(struct osiop_ds) * OSIOP_NACB, 1, 253 sizeof(struct osiop_ds) * OSIOP_NACB, 0, 254 BUS_DMA_NOWAIT, &sc->sc_dsdma); 255 if (err) { 256 printf(": failed to create ds map, err=%d\n", err); 257 return; 258 } 259 err = bus_dmamap_load(sc->sc_dmat, sc->sc_dsdma, sc->sc_ds, 260 sizeof(struct osiop_ds) * OSIOP_NACB, NULL, BUS_DMA_NOWAIT); 261 if (err) { 262 printf(": failed to load ds map, err=%d\n", err); 263 return; 264 } 265 266 acb = malloc(sizeof(struct osiop_acb) * OSIOP_NACB, M_DEVBUF, M_NOWAIT); 267 if (acb == NULL) { 268 printf(": can't allocate memory for acb\n"); 269 return; 270 } 271 memset(acb, 0, sizeof(struct osiop_acb) * OSIOP_NACB); 272 sc->sc_acb = acb; 273 sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags; 274 sc->sc_nexus = NULL; 275 sc->sc_active = 0; 276 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 277 278 /* Initialize command block queue */ 279 TAILQ_INIT(&sc->ready_list); 280 TAILQ_INIT(&sc->nexus_list); 281 TAILQ_INIT(&sc->free_list); 282 283 /* Initialize each command block */ 284 for (i = 0; i < OSIOP_NACB; i++) { 285 bus_addr_t dsa; 286 287 /* XXX How much size is required for each command block? */ 288 err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 289 0, BUS_DMA_NOWAIT, &acb->cmddma); 290 if (err) { 291 printf(": failed to create cmddma map, err=%d\n", err); 292 return; 293 } 294 err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, 295 OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); 296 if (err) { 297 printf(": failed to create datadma map, err=%d\n", 298 err); 299 return; 300 } 301 302 acb->sc = sc; 303 acb->ds = &sc->sc_ds[i]; 304 acb->dsoffset = sizeof(struct osiop_ds) * i; 305 306 dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; 307 acb->ds->id.addr = dsa + OSIOP_DSIDOFF; 308 acb->ds->status.count = 1; 309 acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; 310 acb->ds->msg.count = 1; 311 acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; 312 acb->ds->msgin.count = 1; 313 acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; 314 acb->ds->extmsg.count = 1; 315 acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; 316 acb->ds->synmsg.count = 3; 317 acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; 318 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 319 320 acb++; 321 } 322 323 printf(": NCR53C710 rev %d, %dMHz, SCSI ID %d\n", 324 osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq, sc->sc_id); 325 326 /* 327 * Initialize all 328 */ 329 osiop_init(sc); 330 331 /* 332 * Fill in the adapter. 333 */ 334 sc->sc_adapter.adapt_dev = &sc->sc_dev; 335 sc->sc_adapter.adapt_nchannels = 1; 336 sc->sc_adapter.adapt_openings = OSIOP_NACB; 337 sc->sc_adapter.adapt_max_periph = 1; 338 sc->sc_adapter.adapt_ioctl = NULL; 339 sc->sc_adapter.adapt_minphys = osiop_minphys; 340 sc->sc_adapter.adapt_request = osiop_scsipi_request; 341 342 /* 343 * Fill in the channel. 344 */ 345 sc->sc_channel.chan_adapter = &sc->sc_adapter; 346 sc->sc_channel.chan_bustype = &scsi_bustype; 347 sc->sc_channel.chan_channel = 0; 348 sc->sc_channel.chan_ntargets = OSIOP_NTGT; 349 sc->sc_channel.chan_nluns = 8; 350 sc->sc_channel.chan_id = sc->sc_id; 351 352 /* 353 * Now try to attach all the sub devices. 354 */ 355 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 356 } 357 358 /* 359 * default minphys routine for osiop based controllers 360 */ 361 void 362 osiop_minphys(bp) 363 struct buf *bp; 364 { 365 366 if (bp->b_bcount > OSIOP_MAX_XFER) 367 bp->b_bcount = OSIOP_MAX_XFER; 368 minphys(bp); 369 } 370 371 /* 372 * used by specific osiop controller 373 * 374 */ 375 void 376 osiop_scsipi_request(chan, req, arg) 377 struct scsipi_channel *chan; 378 scsipi_adapter_req_t req; 379 void *arg; 380 { 381 struct scsipi_xfer *xs; 382 struct scsipi_periph *periph; 383 struct osiop_acb *acb; 384 struct osiop_softc *sc; 385 int err, flags, s; 386 387 sc = (struct osiop_softc *)chan->chan_adapter->adapt_dev; 388 389 switch (req) { 390 case ADAPTER_REQ_RUN_XFER: 391 xs = arg; 392 periph = xs->xs_periph; 393 flags = xs->xs_control; 394 395 /* XXXX ?? */ 396 if (flags & XS_CTL_DATA_UIO) 397 panic("osiop: scsi data uio requested"); 398 399 /* XXXX ?? */ 400 if (sc->sc_nexus && flags & XS_CTL_POLL) 401 #if 0 402 panic("osiop_scsicmd: busy"); 403 #else 404 printf("osiop_scsicmd: busy\n"); 405 #endif 406 407 s = splbio(); 408 acb = TAILQ_FIRST(&sc->free_list); 409 if (acb != NULL) { 410 TAILQ_REMOVE(&sc->free_list, acb, chain); 411 } 412 #ifdef DIAGNOSTIC 413 else { 414 scsipi_printaddr(periph); 415 printf("unable to allocate acb\n"); 416 panic("osiop_scsipi_request"); 417 } 418 #endif 419 420 acb->status = ACB_S_READY; 421 acb->xs = xs; 422 423 /* Setup DMA map for SCSI command buffer */ 424 err = bus_dmamap_load(sc->sc_dmat, acb->cmddma, 425 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 426 if (err) { 427 printf("%s: unable to load cmd DMA map: %d", 428 sc->sc_dev.dv_xname, err); 429 xs->error = XS_DRIVER_STUFFUP; 430 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 431 scsipi_done(xs); 432 splx(s); 433 return; 434 } 435 436 /* Setup DMA map for data buffer */ 437 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 438 err = bus_dmamap_load(sc->sc_dmat, acb->datadma, 439 xs->data, xs->datalen, NULL, 440 BUS_DMA_NOWAIT | BUS_DMA_STREAMING); 441 if (err) { 442 printf("%s: unable to load data DMA map: %d", 443 sc->sc_dev.dv_xname, err); 444 xs->error = XS_DRIVER_STUFFUP; 445 scsipi_done(xs); 446 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 447 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 448 splx(s); 449 return; 450 } 451 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 452 0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN) ? 453 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 454 } 455 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, xs->cmdlen, 456 BUS_DMASYNC_PREWRITE); 457 458 acb->cmdlen = xs->cmdlen; 459 acb->datalen = xs->datalen; 460 #ifdef OSIOP_DEBUG 461 acb->data = xs->data; 462 #endif 463 464 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 465 466 if (sc->sc_nexus == NULL) 467 osiop_sched(sc); 468 469 splx(s); 470 471 if (flags & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) 472 osiop_poll(sc, acb); 473 return; 474 475 case ADAPTER_REQ_GROW_RESOURCES: 476 return; 477 478 case ADAPTER_REQ_SET_XFER_MODE: 479 return; 480 } 481 } 482 483 void 484 osiop_poll(sc, acb) 485 struct osiop_softc *sc; 486 struct osiop_acb *acb; 487 { 488 struct scsipi_xfer *xs = acb->xs; 489 int status, i, s, to; 490 u_int8_t istat, dstat, sstat0; 491 492 s = splbio(); 493 to = xs->timeout / 1000; 494 if (!TAILQ_EMPTY(&sc->nexus_list)) 495 printf("%s: osiop_poll called with disconnected device\n", 496 sc->sc_dev.dv_xname); 497 for (;;) { 498 i = 1000; 499 while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & 500 (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 501 if (i <= 0) { 502 #ifdef OSIOP_DEBUG 503 printf("waiting: tgt %d cmd %02x sbcl %02x" 504 " dsp %x (+%lx) dcmd %x" 505 " ds %p timeout %d\n", 506 xs->xs_periph->periph_target, 507 xs->cmd->opcode, 508 osiop_read_1(sc, OSIOP_SBCL), 509 osiop_read_4(sc, OSIOP_DSP), 510 osiop_read_4(sc, OSIOP_DSP) - 511 sc->sc_scrdma->dm_segs[0].ds_addr, 512 osiop_read_1(sc, OSIOP_DCMD), 513 acb->ds, acb->xs->timeout); 514 #endif 515 i = 1000; 516 to--; 517 if (to <= 0) { 518 osiop_reset(sc); 519 splx(s); 520 return; 521 } 522 } 523 delay(1000); 524 i--; 525 } 526 sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 527 dstat = osiop_read_1(sc, OSIOP_DSTAT); 528 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 529 if (acb != sc->sc_nexus) 530 printf("%s: osiop_poll disconnected device" 531 " completed\n", sc->sc_dev.dv_xname); 532 else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 533 sc->sc_flags &= ~OSIOP_INTSOFF; 534 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 535 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 536 } 537 osiop_scsidone(sc->sc_nexus, status); 538 } 539 540 if (xs->xs_status & XS_STS_DONE) 541 break; 542 } 543 544 splx(s); 545 return; 546 } 547 548 /* 549 * start next command that's ready 550 */ 551 void 552 osiop_sched(sc) 553 struct osiop_softc *sc; 554 { 555 struct scsipi_periph *periph; 556 struct osiop_acb *acb; 557 int i; 558 559 #ifdef OSIOP_DEBUG 560 if (sc->sc_nexus != NULL) { 561 printf("%s: osiop_sched- nexus %p/%d ready %p/%d\n", 562 sc->sc_dev.dv_xname, sc->sc_nexus, 563 sc->sc_nexus->xs->xs_periph->periph_target, 564 sc->ready_list.tqh_first, 565 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 566 return; 567 } 568 #endif 569 TAILQ_FOREACH(acb, &sc->ready_list, chain) { 570 periph = acb->xs->xs_periph; 571 i = periph->periph_target; 572 if ((sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun)) == 0) { 573 struct osiop_tinfo *ti; 574 575 TAILQ_REMOVE(&sc->ready_list, acb, chain); 576 sc->sc_nexus = acb; 577 ti = &sc->sc_tinfo[i]; 578 ti->lubusy |= (1 << periph->periph_lun); 579 break; 580 } 581 } 582 583 if (acb == NULL) { 584 #ifdef OSIOP_DEBUG 585 printf("%s: osiop_sched didn't find ready command\n", 586 sc->sc_dev.dv_xname); 587 #endif 588 return; 589 } 590 591 if (acb->xs->xs_control & XS_CTL_RESET) 592 osiop_reset(sc); 593 594 sc->sc_active++; 595 osiop_select(sc); 596 } 597 598 void 599 osiop_scsidone(acb, status) 600 struct osiop_acb *acb; 601 int status; 602 { 603 struct scsipi_xfer *xs; 604 struct scsipi_periph *periph; 605 struct osiop_softc *sc; 606 int dosched = 0; 607 608 #ifdef DIAGNOSTIC 609 if (acb == NULL || acb->xs == NULL) { 610 printf("osiop_scsidone: NULL acb or scsipi_xfer\n"); 611 #if defined(OSIOP_DEBUG) && defined(DDB) 612 Debugger(); 613 #endif 614 return; 615 } 616 #endif 617 xs = acb->xs; 618 sc = acb->sc; 619 periph = xs->xs_periph; 620 621 #ifdef OSIOP_DEBUG 622 if (acb->status != ACB_S_DONE) 623 printf("%s: acb not done (status %d)\n", 624 sc->sc_dev.dv_xname, acb->status); 625 #endif 626 627 xs->status = status; 628 629 switch (status) { 630 case SCSI_OK: 631 xs->error = XS_NOERROR; 632 break; 633 case SCSI_BUSY: 634 xs->error = XS_BUSY; 635 break; 636 case SCSI_CHECK: 637 xs->error = XS_BUSY; 638 break; 639 case SCSI_OSIOP_NOCHECK: 640 /* 641 * don't check status, xs->error is already valid 642 */ 643 break; 644 case SCSI_OSIOP_NOSTATUS: 645 /* 646 * the status byte was not updated, cmd was 647 * aborted 648 */ 649 xs->error = XS_SELTIMEOUT; 650 break; 651 default: 652 #ifdef OSIOP_DEBUG 653 printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", 654 sc->sc_dev.dv_xname, status); 655 #endif 656 xs->error = XS_DRIVER_STUFFUP; 657 break; 658 } 659 660 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 661 bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, 662 (xs->xs_control & XS_CTL_DATA_IN) ? 663 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 664 bus_dmamap_unload(sc->sc_dmat, acb->datadma); 665 } 666 667 bus_dmamap_sync(sc->sc_dmat, acb->cmddma, 0, acb->cmdlen, 668 BUS_DMASYNC_POSTWRITE); 669 bus_dmamap_unload(sc->sc_dmat, acb->cmddma); 670 671 /* 672 * Remove the ACB from whatever queue it's on. We have to do a bit of 673 * a hack to figure out which queue it's on. Note that it is *not* 674 * necessary to cdr down the ready queue, but we must cdr down the 675 * nexus queue and see if it's there, so we can mark the unit as no 676 * longer busy. This code is sickening, but it works. 677 */ 678 if (acb == sc->sc_nexus) { 679 sc->sc_nexus = NULL; 680 sc->sc_tinfo[periph->periph_target].lubusy &= 681 ~(1 << periph->periph_lun); 682 if (!TAILQ_EMPTY(&sc->ready_list)) 683 dosched = 1; /* start next command */ 684 sc->sc_active--; 685 OSIOP_TRACE('d', 'a', status, 0); 686 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 687 TAILQ_REMOVE(&sc->ready_list, acb, chain); 688 OSIOP_TRACE('d', 'r', status, 0); 689 } else { 690 struct osiop_acb *acb2; 691 TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { 692 if (acb2 == acb) { 693 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 694 sc->sc_tinfo[periph->periph_target].lubusy &= 695 ~(1 << periph->periph_lun); 696 sc->sc_active--; 697 break; 698 } 699 } 700 if (acb2 == NULL) { 701 if (acb->chain.tqe_next != NULL) { 702 TAILQ_REMOVE(&sc->ready_list, acb, chain); 703 sc->sc_active--; 704 } else { 705 printf("%s: can't find matching acb\n", 706 sc->sc_dev.dv_xname); 707 #ifdef DDB 708 #if 0 709 Debugger(); 710 #endif 711 #endif 712 } 713 } 714 OSIOP_TRACE('d', 'n', status, 0); 715 } 716 /* Put it on the free list. */ 717 acb->status = ACB_S_FREE; 718 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 719 sc->sc_tinfo[periph->periph_target].cmds++; 720 721 callout_stop(&xs->xs_callout); 722 xs->resid = 0; 723 scsipi_done(xs); 724 725 if (dosched && sc->sc_nexus == NULL) 726 osiop_sched(sc); 727 } 728 729 void 730 osiop_abort(sc, where) 731 struct osiop_softc *sc; 732 const char *where; 733 { 734 735 printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", 736 sc->sc_dev.dv_xname, where, 737 osiop_read_1(sc, OSIOP_DSTAT), 738 osiop_read_1(sc, OSIOP_SSTAT0), 739 osiop_read_1(sc, OSIOP_SBCL)); 740 741 /* XXX XXX XXX */ 742 if (sc->sc_active > 0) { 743 sc->sc_active = 0; 744 } 745 } 746 747 void 748 osiop_init(sc) 749 struct osiop_softc *sc; 750 { 751 int i, inhibit_sync, inhibit_disc; 752 753 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 754 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 755 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 756 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 757 758 if (sc->sc_minsync < 25) 759 sc->sc_minsync = 25; 760 761 if (sc->sc_clock_freq <= 25) { 762 sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ 763 sc->sc_tcp[0] = sc->sc_tcp[1]; 764 } else if (sc->sc_clock_freq <= 37) { 765 sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ 766 sc->sc_tcp[0] = sc->sc_tcp[2]; 767 } else if (sc->sc_clock_freq <= 50) { 768 sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ 769 sc->sc_tcp[0] = sc->sc_tcp[3]; 770 } else { 771 sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ 772 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 773 } 774 775 if ((sc->sc_cfflags & 0x10000) != 0) { 776 sc->sc_flags |= OSIOP_NODMA; 777 #ifdef OSIOP_DEBUG 778 printf("%s: DMA disabled; use polling\n", 779 sc->sc_dev.dv_xname); 780 #endif 781 } 782 783 inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ 784 inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ 785 #ifdef OSIOP_DEBUG 786 if (inhibit_sync != 0) 787 printf("%s: Inhibiting synchronous transfer: 0x%02x\n", 788 sc->sc_dev.dv_xname, inhibit_sync); 789 if (inhibit_disc != 0) 790 printf("%s: Inhibiting disconnect: 0x%02x\n", 791 sc->sc_dev.dv_xname, inhibit_disc); 792 #endif 793 for (i = 0; i < OSIOP_NTGT; i++) { 794 if (inhibit_sync & (1 << i)) 795 sc->sc_tinfo[i].flags |= TI_NOSYNC; 796 if (inhibit_disc & (1 << i)) 797 sc->sc_tinfo[i].flags |= TI_NODISC; 798 } 799 800 osiop_resetbus(sc); 801 osiop_reset(sc); 802 } 803 804 void 805 osiop_reset(sc) 806 struct osiop_softc *sc; 807 { 808 struct osiop_acb *acb; 809 int s; 810 u_int8_t stat; 811 812 #ifdef OSIOP_DEBUG 813 printf("%s: resetting chip\n", sc->sc_dev.dv_xname); 814 #endif 815 if (sc->sc_flags & OSIOP_ALIVE) 816 osiop_abort(sc, "reset"); 817 818 s = splbio(); 819 820 /* 821 * Reset the chip 822 * XXX - is this really needed? 823 */ 824 825 /* abort current script */ 826 osiop_write_1(sc, OSIOP_ISTAT, 827 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); 828 /* reset chip */ 829 osiop_write_1(sc, OSIOP_ISTAT, 830 osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); 831 delay(100); 832 osiop_write_1(sc, OSIOP_ISTAT, 833 osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); 834 delay(100); 835 836 /* 837 * Set up various chip parameters 838 */ 839 osiop_write_1(sc, OSIOP_SCNTL0, 840 OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); 841 osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); 842 osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); 843 osiop_write_1(sc, OSIOP_DMODE, OSIOP_DMODE_BL4); 844 /* don't enable interrupts yet */ 845 osiop_write_1(sc, OSIOP_SIEN, 0x00); 846 osiop_write_1(sc, OSIOP_DIEN, 0x00); 847 osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); 848 osiop_write_1(sc, OSIOP_DWT, 0x00); 849 osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) 850 | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); 851 osiop_write_1(sc, OSIOP_CTEST7, 852 osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); 853 854 /* will need to re-negotiate sync xfers */ 855 memset(&sc->sc_sync, 0, sizeof(sc->sc_sync)); 856 857 stat = osiop_read_1(sc, OSIOP_ISTAT); 858 if (stat & OSIOP_ISTAT_SIP) 859 osiop_read_1(sc, OSIOP_SSTAT0); 860 if (stat & OSIOP_ISTAT_DIP) 861 osiop_read_1(sc, OSIOP_DSTAT); 862 863 splx(s); 864 865 delay(osiop_reset_delay * 1000); 866 867 if (sc->sc_nexus != NULL) { 868 sc->sc_nexus->xs->error = 869 (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? 870 XS_TIMEOUT : XS_RESET; 871 sc->sc_nexus->status = ACB_S_DONE; 872 sc->sc_nexus->flags = 0; 873 osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); 874 } 875 while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 876 acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? 877 XS_TIMEOUT : XS_RESET; 878 acb->status = ACB_S_DONE; 879 acb->flags = 0; 880 osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); 881 } 882 883 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 884 /* enable SCSI and DMA interrupts */ 885 sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ 886 OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; 887 sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | 888 /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; 889 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 890 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 891 } 892 893 void 894 osiop_resetbus(sc) 895 struct osiop_softc *sc; 896 { 897 898 osiop_write_1(sc, OSIOP_SIEN, 0); 899 osiop_write_1(sc, OSIOP_SCNTL1, 900 osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); 901 delay(25); 902 osiop_write_1(sc, OSIOP_SCNTL1, 903 osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); 904 } 905 906 /* 907 * Setup Data Storage for 53C710 and start SCRIPTS processing 908 */ 909 910 void 911 osiop_start(sc) 912 struct osiop_softc *sc; 913 { 914 struct osiop_acb *acb = sc->sc_nexus; 915 struct osiop_ds *ds = acb->ds; 916 struct scsipi_xfer *xs = acb->xs; 917 bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; 918 int target = xs->xs_periph->periph_target; 919 int lun = xs->xs_periph->periph_lun; 920 int disconnect; 921 int i; 922 923 #ifdef OSIOP_DEBUG 924 if (osiop_debug & DEBUG_DISC && 925 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 926 printf("ACK! osiop was busy: script %p dsa %p active %d\n", 927 sc->sc_script, acb->ds, sc->sc_active); 928 printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", 929 osiop_read_1(sc, OSIOP_ISTAT), 930 osiop_read_1(sc, OSIOP_SFBR), 931 osiop_read_1(sc, OSIOP_LCRC), 932 osiop_read_1(sc, OSIOP_SIEN), 933 osiop_read_1(sc, OSIOP_DIEN)); 934 #ifdef DDB 935 #if 0 936 Debugger(); 937 #endif 938 #endif 939 } 940 #endif 941 942 #ifdef OSIOP_DEBUG 943 if (acb->status != ACB_S_READY) 944 panic("osiop_start: non-ready cmd in acb"); 945 #endif 946 947 acb->intstat = 0; 948 949 ds->cmd.count = acb->cmdlen; 950 ds->cmd.addr = acb->cmddma->dm_segs[0].ds_addr; 951 952 ds->scsi_addr = (1 << (16 + target)) | (sc->sc_sync[target].sxfer << 8); 953 954 disconnect = (xs->xs_control & XS_CTL_REQSENSE) == 0 && 955 (sc->sc_tinfo[target].flags & TI_NODISC) == 0; 956 957 ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); 958 ds->id.count = 1; 959 ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ 960 ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; 961 memset(&ds->data, 0, sizeof(ds->data)); 962 963 /* 964 * Negotiate wide is the initial negotiation state; since the 53c710 965 * doesn't do wide transfers, just begin the synchronous transfer 966 * negotation here. 967 */ 968 if (sc->sc_sync[target].state == NEG_INIT) { 969 if ((sc->sc_tinfo[target].flags & TI_NOSYNC) != 0) { 970 sc->sc_sync[target].state = NEG_DONE; 971 sc->sc_sync[target].sbcl = 0; 972 sc->sc_sync[target].sxfer = 0; 973 #ifdef OSIOP_DEBUG 974 if (osiopsync_debug) 975 printf("Forcing target %d asynchronous\n", 976 target); 977 #endif 978 } else { 979 ds->msgbuf[2] = MSG_INVALID; 980 ds->msgout[1] = MSG_EXTENDED; 981 ds->msgout[2] = MSG_EXT_SDTR_LEN; 982 ds->msgout[3] = MSG_EXT_SDTR; 983 ds->msgout[4] = sc->sc_minsync; 984 ds->msgout[5] = OSIOP_MAX_OFFSET; 985 ds->id.count = 6; 986 sc->sc_sync[target].state = NEG_WAITS; 987 #ifdef OSIOP_DEBUG 988 if (osiopsync_debug) 989 printf("Sending sync request to target %d\n", 990 target); 991 #endif 992 } 993 } 994 995 acb->curaddr = 0; 996 acb->curlen = 0; 997 998 /* 999 * Build physical DMA addresses for scatter/gather I/O 1000 */ 1001 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1002 for (i = 0; i < datadma->dm_nsegs; i++) { 1003 ds->data[i].count = datadma->dm_segs[i].ds_len; 1004 ds->data[i].addr = datadma->dm_segs[i].ds_addr; 1005 } 1006 } 1007 1008 /* sync script data structure */ 1009 bus_dmamap_sync(sc->sc_dmat, dsdma, 1010 acb->dsoffset, sizeof(struct osiop_ds), 1011 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1012 1013 acb->status = ACB_S_ACTIVE; 1014 1015 /* handle timeout */ 1016 if ((xs->xs_control & XS_CTL_POLL) == 0) { 1017 int timeout = acb->xs->timeout; 1018 /* start expire timer */ 1019 timeout = (timeout > 100000) ? 1020 timeout / 1000 * hz : timeout * hz / 1000; 1021 if (timeout == 0) 1022 timeout = 1; 1023 callout_reset(&xs->xs_callout, timeout, 1024 osiop_timeout, acb); 1025 } 1026 #ifdef OSIOP_DEBUG 1027 if (osiop_debug & DEBUG_DISC && 1028 osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1029 printf("ACK! osiop was busy at start: " 1030 "script %p dsa %p active %d\n", 1031 sc->sc_script, acb->ds, sc->sc_active); 1032 #ifdef DDB 1033 #if 0 1034 Debugger(); 1035 #endif 1036 #endif 1037 } 1038 #endif 1039 if (TAILQ_EMPTY(&sc->nexus_list)) { 1040 if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) 1041 printf("%s: osiop_select while connected?\n", 1042 sc->sc_dev.dv_xname); 1043 osiop_write_4(sc, OSIOP_TEMP, 0); 1044 osiop_write_1(sc, OSIOP_SBCL, sc->sc_sync[target].sbcl); 1045 osiop_write_4(sc, OSIOP_DSA, 1046 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1047 osiop_write_4(sc, OSIOP_DSP, 1048 sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); 1049 OSIOP_TRACE('s', 1, 0, 0); 1050 } else { 1051 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1052 osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); 1053 OSIOP_TRACE('s', 2, 0, 0); 1054 } else { 1055 OSIOP_TRACE('s', 3, 1056 osiop_read_1(sc, OSIOP_ISTAT), 0); 1057 } 1058 } 1059 #ifdef OSIOP_DEBUG 1060 osiopstarts++; 1061 #endif 1062 } 1063 1064 /* 1065 * Process a DMA or SCSI interrupt from the 53C710 SIOP 1066 */ 1067 1068 int 1069 osiop_checkintr(sc, istat, dstat, sstat0, status) 1070 struct osiop_softc *sc; 1071 u_int8_t istat; 1072 u_int8_t dstat; 1073 u_int8_t sstat0; 1074 int *status; 1075 { 1076 struct osiop_acb *acb = sc->sc_nexus; 1077 struct osiop_ds *ds; 1078 bus_dmamap_t dsdma = sc->sc_dsdma; 1079 bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; 1080 int target = 0; 1081 int dfifo, dbc, intcode, sstat1; 1082 1083 dfifo = osiop_read_1(sc, OSIOP_DFIFO); 1084 dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; 1085 sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); 1086 osiop_write_1(sc, OSIOP_CTEST8, 1087 osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); 1088 while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != 1089 OSIOP_CTEST1_FMT) 1090 ; 1091 osiop_write_1(sc, OSIOP_CTEST8, 1092 osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); 1093 intcode = osiop_read_4(sc, OSIOP_DSPS); 1094 #ifdef OSIOP_DEBUG 1095 osiopints++; 1096 if (osiop_read_4(sc, OSIOP_DSP) != 0 && 1097 (osiop_read_4(sc, OSIOP_DSP) < scraddr || 1098 osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { 1099 printf("%s: dsp not within script dsp %x scripts %lx:%lx", 1100 sc->sc_dev.dv_xname, 1101 osiop_read_4(sc, OSIOP_DSP), 1102 scraddr, scraddr + sizeof(osiop_script)); 1103 printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); 1104 #ifdef DDB 1105 Debugger(); 1106 #endif 1107 } 1108 #endif 1109 OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? 1110 intcode & 0xff : sstat0); 1111 1112 if (acb != NULL) { /* XXX */ 1113 ds = acb->ds; 1114 bus_dmamap_sync(sc->sc_dmat, dsdma, 1115 acb->dsoffset, sizeof(struct osiop_ds), 1116 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1117 #ifdef OSIOP_DEBUG 1118 if (acb->status != ACB_S_ACTIVE) 1119 printf("osiop_checkintr: acb not active (status %d)\n", 1120 acb->status); 1121 #endif 1122 } 1123 1124 1125 if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { 1126 /* Normal completion status, or check condition */ 1127 #ifdef OSIOP_DEBUG 1128 if (osiop_read_4(sc, OSIOP_DSA) != 1129 dsdma->dm_segs[0].ds_addr + acb->dsoffset) { 1130 printf("osiop: invalid dsa: %x %lx\n", 1131 osiop_read_4(sc, OSIOP_DSA), 1132 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1133 panic("*** osiop DSA invalid ***"); 1134 } 1135 #endif 1136 target = acb->xs->xs_periph->periph_target; 1137 if (sc->sc_sync[target].state == NEG_WAITS) { 1138 if (ds->msgbuf[1] == MSG_INVALID) 1139 printf("%s: target %d ignored sync request\n", 1140 sc->sc_dev.dv_xname, target); 1141 else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) 1142 printf("%s: target %d rejected sync request\n", 1143 sc->sc_dev.dv_xname, target); 1144 else 1145 /* XXX - need to set sync transfer parameters */ 1146 printf("%s: target %d (sync) %02x %02x %02x\n", 1147 sc->sc_dev.dv_xname, target, ds->msgbuf[1], 1148 ds->msgbuf[2], ds->msgbuf[3]); 1149 sc->sc_sync[target].state = NEG_DONE; 1150 } 1151 #ifdef OSIOP_DEBUG 1152 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1153 #if 0 1154 printf("ACK! osiop was busy at end: " 1155 "script %p dsa %p\n", &osiop_script, ds); 1156 #ifdef DDB 1157 Debugger(); 1158 #endif 1159 #endif 1160 } 1161 if (ds->msgbuf[0] != MSG_CMDCOMPLETE) 1162 printf("%s: message was not COMMAND COMPLETE: %02x\n", 1163 sc->sc_dev.dv_xname, ds->msgbuf[0]); 1164 #endif 1165 if (!TAILQ_EMPTY(&sc->nexus_list)) 1166 osiop_write_1(sc, OSIOP_DCNTL, 1167 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1168 *status = ds->stat[0]; 1169 acb->status = ACB_S_DONE; 1170 return (1); 1171 } 1172 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { 1173 target = acb->xs->xs_periph->periph_target; 1174 if (ds->msgbuf[1] == MSG_EXTENDED && 1175 ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1176 ds->msgbuf[3] == MSG_EXT_SDTR) { 1177 #ifdef OSIOP_DEBUG 1178 if (osiopsync_debug) 1179 printf("sync msg in: " 1180 "%02x %02x %02x %02x %02x %02x\n", 1181 ds->msgbuf[0], ds->msgbuf[1], 1182 ds->msgbuf[2], ds->msgbuf[3], 1183 ds->msgbuf[4], ds->msgbuf[5]); 1184 #endif 1185 sc->sc_sync[target].sxfer = 0; 1186 sc->sc_sync[target].sbcl = 0; 1187 if (ds->msgbuf[2] == MSG_EXT_SDTR_LEN && 1188 ds->msgbuf[3] == MSG_EXT_SDTR && 1189 ds->msgbuf[5] != 0) { 1190 printf("%s: target %d now synchronous, " 1191 "period=%d ns, offset=%d\n", 1192 sc->sc_dev.dv_xname, target, 1193 ds->msgbuf[4] * 4, ds->msgbuf[5]); 1194 scsi_period_to_osiop(sc, target); 1195 } 1196 bus_dmamap_sync(sc->sc_dmat, dsdma, 1197 acb->dsoffset, sizeof(struct osiop_ds), 1198 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1199 osiop_write_1(sc, OSIOP_SXFER, 1200 sc->sc_sync[target].sxfer); 1201 osiop_write_1(sc, OSIOP_SBCL, 1202 sc->sc_sync[target].sbcl); 1203 if (sc->sc_sync[target].state == NEG_WAITS) { 1204 sc->sc_sync[target].state = NEG_DONE; 1205 osiop_write_4(sc, OSIOP_DSP, 1206 scraddr + Ent_clear_ack); 1207 return (0); 1208 } 1209 osiop_write_1(sc, OSIOP_DCNTL, 1210 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1211 sc->sc_sync[target].state = NEG_DONE; 1212 return (0); 1213 } 1214 /* XXX - not SDTR message */ 1215 } 1216 if (sstat0 & OSIOP_SSTAT0_M_A) { 1217 /* Phase mismatch */ 1218 #ifdef OSIOP_DEBUG 1219 osiopphmm++; 1220 if (acb == NULL) 1221 printf("%s: Phase mismatch with no active command?\n", 1222 sc->sc_dev.dv_xname); 1223 #endif 1224 if (acb->datalen > 0) { 1225 int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; 1226 if (sstat1 & OSIOP_SSTAT1_ORF) 1227 adjust++; 1228 if (sstat1 & OSIOP_SSTAT1_OLF) 1229 adjust++; 1230 acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; 1231 acb->curlen = dbc + adjust; 1232 #ifdef OSIOP_DEBUG 1233 if (osiop_debug & DEBUG_DISC) { 1234 printf("Phase mismatch: curaddr %lx " 1235 "curlen %lx dfifo %x dbc %x sstat1 %x " 1236 "adjust %x sbcl %x starts %d acb %p\n", 1237 acb->curaddr, acb->curlen, dfifo, 1238 dbc, sstat1, adjust, 1239 osiop_read_1(sc, OSIOP_SBCL), 1240 osiopstarts, acb); 1241 if (ds->data[1].count != 0) { 1242 int i; 1243 for (i = 0; ds->data[i].count != 0; i++) 1244 printf("chain[%d] " 1245 "addr %x len %x\n", i, 1246 ds->data[i].addr, 1247 ds->data[i].count); 1248 } 1249 bus_dmamap_sync(sc->sc_dmat, dsdma, 1250 acb->dsoffset, sizeof(struct osiop_ds), 1251 BUS_DMASYNC_PREREAD | 1252 BUS_DMASYNC_PREWRITE); 1253 } 1254 #endif 1255 } 1256 #ifdef OSIOP_DEBUG 1257 OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), 1258 osiop_read_4(sc, OSIOP_DSP) >> 8, 1259 osiop_read_4(sc, OSIOP_DSP)); 1260 if (osiop_debug & DEBUG_PHASE) 1261 printf("Phase mismatch: %x dsp +%lx dcmd %x\n", 1262 osiop_read_1(sc, OSIOP_SBCL), 1263 osiop_read_4(sc, OSIOP_DSP) - scraddr, 1264 osiop_read_4(sc, OSIOP_DBC)); 1265 #endif 1266 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { 1267 printf("Phase mismatch: " 1268 "REQ not asserted! %02x dsp %x\n", 1269 osiop_read_1(sc, OSIOP_SBCL), 1270 osiop_read_4(sc, OSIOP_DSP)); 1271 #if defined(OSIOP_DEBUG) && defined(DDB) 1272 /*Debugger(); XXX is*/ 1273 #endif 1274 } 1275 switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { 1276 case DATA_OUT_PHASE: 1277 case DATA_IN_PHASE: 1278 case STATUS_PHASE: 1279 case COMMAND_PHASE: 1280 case MSG_IN_PHASE: 1281 case MSG_OUT_PHASE: 1282 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1283 break; 1284 default: 1285 printf("%s: invalid phase\n", sc->sc_dev.dv_xname); 1286 goto bad_phase; 1287 } 1288 return (0); 1289 } 1290 if (sstat0 & OSIOP_SSTAT0_STO) { 1291 /* Select timed out */ 1292 #ifdef OSIOP_DEBUG 1293 if (acb == NULL) 1294 printf("%s: Select timeout with no active command?\n", 1295 sc->sc_dev.dv_xname); 1296 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1297 printf("ACK! osiop was busy at timeout: " 1298 "script %p dsa %lx\n", sc->sc_script, 1299 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1300 printf(" sbcl %x sdid %x " 1301 "istat %x dstat %x sstat0 %x\n", 1302 osiop_read_1(sc, OSIOP_SBCL), 1303 osiop_read_1(sc, OSIOP_SDID), 1304 istat, dstat, sstat0); 1305 if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { 1306 printf("Yikes, it's not busy now!\n"); 1307 #if 0 1308 *status = SCSI_OSIOP_NOSTATUS; 1309 if (!TAILQ_EMPTY(&sc->nexus_list)) 1310 osiop_write_4(sc, OSIOP_DSP, 1311 scraddr + Ent_wait_reselect); 1312 return (1); 1313 #endif 1314 } 1315 #if 0 1316 osiop_write_1(sc, OSIOP_DCNTL, 1317 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1318 #endif 1319 #ifdef DDB 1320 Debugger(); 1321 #endif 1322 return (0); 1323 } 1324 #endif 1325 acb->status = ACB_S_DONE; 1326 *status = SCSI_OSIOP_NOSTATUS; 1327 acb->xs->error = XS_SELTIMEOUT; 1328 if (!TAILQ_EMPTY(&sc->nexus_list)) 1329 osiop_write_4(sc, OSIOP_DSP, 1330 scraddr + Ent_wait_reselect); 1331 return (1); 1332 } 1333 if (acb != NULL) 1334 target = acb->xs->xs_periph->periph_target; 1335 else 1336 target = sc->sc_id; 1337 if (sstat0 & OSIOP_SSTAT0_UDC) { 1338 #ifdef OSIOP_DEBUG 1339 if (acb == NULL) 1340 printf("%s: Unexpected disconnect " 1341 "with no active command?\n", sc->sc_dev.dv_xname); 1342 printf("%s: target %d disconnected unexpectedly\n", 1343 sc->sc_dev.dv_xname, target); 1344 #endif 1345 #if 0 1346 osiop_abort(sc, "osiop_chkintr"); 1347 #endif 1348 *status = SCSI_CHECK; 1349 if (!TAILQ_EMPTY(&sc->nexus_list)) 1350 osiop_write_4(sc, OSIOP_DSP, 1351 scraddr + Ent_wait_reselect); 1352 return (acb != NULL); 1353 } 1354 if (dstat & OSIOP_DSTAT_SIR && 1355 (intcode == A_int_disc || intcode == A_int_disc_wodp)) { 1356 /* Disconnect */ 1357 if (acb == NULL) { 1358 printf("%s: Disconnect with no active command?\n", 1359 sc->sc_dev.dv_xname); 1360 return (0); 1361 } 1362 #ifdef OSIOP_DEBUG 1363 if (osiop_debug & DEBUG_DISC) { 1364 printf("%s: ID %02x disconnected TEMP %x (+%lx) " 1365 "curaddr %lx curlen %lx buf %x len %x dfifo %x " 1366 "dbc %x sstat1 %x starts %d acb %p\n", 1367 sc->sc_dev.dv_xname, 1 << target, 1368 osiop_read_4(sc, OSIOP_TEMP), 1369 (osiop_read_4(sc, OSIOP_TEMP) != 0) ? 1370 osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, 1371 acb->curaddr, acb->curlen, 1372 ds->data[0].addr, ds->data[0].count, 1373 dfifo, dbc, sstat1, osiopstarts, acb); 1374 bus_dmamap_sync(sc->sc_dmat, dsdma, 1375 acb->dsoffset, sizeof(struct osiop_ds), 1376 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1377 } 1378 #endif 1379 /* 1380 * XXXX need to update curaddr/curlen to reflect 1381 * current data transferred. If device disconnected in 1382 * the middle of a DMA block, they should already be set 1383 * by the phase change interrupt. If the disconnect 1384 * occurs on a DMA block boundary, we have to figure out 1385 * which DMA block it was. 1386 */ 1387 if (acb->datalen > 0 && 1388 osiop_read_4(sc, OSIOP_TEMP) != 0) { 1389 long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; 1390 1391 if (acb->curlen != 0 && 1392 acb->curlen != ds->data[0].count) 1393 printf("%s: curaddr/curlen already set? " 1394 "n %lx iob %lx/%lx chain[0] %x/%x\n", 1395 sc->sc_dev.dv_xname, n, 1396 acb->curaddr, acb->curlen, 1397 ds->data[0].addr, ds->data[0].count); 1398 if (n < Ent_datain) 1399 n = (n - Ent_dataout) / 16; 1400 else 1401 n = (n - Ent_datain) / 16; 1402 if (n <= 0 && n > OSIOP_NSG) 1403 printf("TEMP invalid %ld\n", n); 1404 else { 1405 acb->curaddr = ds->data[n].addr; 1406 acb->curlen = ds->data[n].count; 1407 } 1408 #ifdef OSIOP_DEBUG 1409 if (osiop_debug & DEBUG_DISC) { 1410 printf("%s: TEMP offset %ld", 1411 sc->sc_dev.dv_xname, n); 1412 printf(" curaddr %lx curlen %lx\n", 1413 acb->curaddr, acb->curlen); 1414 } 1415 #endif 1416 } 1417 /* 1418 * If data transfer was interrupted by disconnect, curaddr 1419 * and curlen should reflect the point of interruption. 1420 * Adjust the DMA chain so that the data transfer begins 1421 * at the appropriate place upon reselection. 1422 * XXX This should only be done on save data pointer message? 1423 */ 1424 if (acb->curlen > 0) { 1425 int i, j; 1426 1427 #ifdef OSIOP_DEBUG 1428 if (osiop_debug & DEBUG_DISC) 1429 printf("%s: adjusting DMA chain\n", 1430 sc->sc_dev.dv_xname); 1431 if (intcode == A_int_disc_wodp) 1432 printf("%s: ID %02x disconnected " 1433 "without Save Data Pointers\n", 1434 sc->sc_dev.dv_xname, 1 << target); 1435 #endif 1436 for (i = 0; i < OSIOP_NSG; i++) { 1437 if (ds->data[i].count == 0) 1438 break; 1439 if (acb->curaddr >= ds->data[i].addr && 1440 acb->curaddr < 1441 (ds->data[i].addr + ds->data[i].count)) 1442 break; 1443 } 1444 if (i >= OSIOP_NSG || ds->data[i].count == 0) { 1445 printf("couldn't find saved data pointer: " 1446 "curaddr %lx curlen %lx i %d\n", 1447 acb->curaddr, acb->curlen, i); 1448 #ifdef DDB 1449 Debugger(); 1450 #endif 1451 } 1452 #ifdef OSIOP_DEBUG 1453 if (osiop_debug & DEBUG_DISC) 1454 printf(" chain[0]: %x/%x -> %lx/%lx\n", 1455 ds->data[0].addr, ds->data[0].count, 1456 acb->curaddr, acb->curlen); 1457 #endif 1458 ds->data[0].addr = acb->curaddr; 1459 ds->data[0].count = acb->curlen; 1460 for (j = 1, i = i + 1; 1461 i < OSIOP_NSG && ds->data[i].count > 0; 1462 i++, j++) { 1463 #ifdef OSIOP_DEBUG 1464 if (osiop_debug & DEBUG_DISC) 1465 printf(" chain[%d]: %x/%x -> %x/%x\n", j, 1466 ds->data[j].addr, ds->data[j].count, 1467 ds->data[i].addr, ds->data[i].count); 1468 #endif 1469 ds->data[j].addr = ds->data[i].addr; 1470 ds->data[j].count = ds->data[i].count; 1471 } 1472 if (j < OSIOP_NSG) { 1473 ds->data[j].addr = 0; 1474 ds->data[j].count = 0; 1475 } 1476 bus_dmamap_sync(sc->sc_dmat, dsdma, 1477 acb->dsoffset, sizeof(struct osiop_ds), 1478 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1479 } 1480 sc->sc_tinfo[target].dconns++; 1481 /* 1482 * add nexus to waiting list 1483 * clear nexus 1484 * try to start another command for another target/lun 1485 */ 1486 acb->intstat = sc->sc_flags & OSIOP_INTSOFF; 1487 TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); 1488 sc->sc_nexus = NULL; /* no current device */ 1489 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); 1490 /* XXXX start another command ? */ 1491 if (!TAILQ_EMPTY(&sc->ready_list)) 1492 osiop_sched(sc); 1493 return (0); 1494 } 1495 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { 1496 int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; 1497 int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; 1498 #ifdef OSIOP_DEBUG 1499 u_int8_t resmsg; 1500 #endif 1501 1502 /* Reconnect */ 1503 /* XXXX save current SBCL */ 1504 sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); 1505 #ifdef OSIOP_DEBUG 1506 if (osiop_debug & DEBUG_DISC) 1507 printf("%s: target ID %02x reselected dsps %x\n", 1508 sc->sc_dev.dv_xname, reselid, intcode); 1509 resmsg = osiop_read_1(sc, OSIOP_SFBR); 1510 if (!MSG_ISIDENTIFY(resmsg)) 1511 printf("%s: Reselect message in was not identify: " 1512 "%02x\n", sc->sc_dev.dv_xname, resmsg); 1513 #endif 1514 if (sc->sc_nexus != NULL) { 1515 struct scsipi_periph *periph = 1516 sc->sc_nexus->xs->xs_periph; 1517 #ifdef OSIOP_DEBUG 1518 if (osiop_debug & DEBUG_DISC) 1519 printf("%s: reselect ID %02x w/active\n", 1520 sc->sc_dev.dv_xname, reselid); 1521 #endif 1522 TAILQ_INSERT_HEAD(&sc->ready_list, 1523 sc->sc_nexus, chain); 1524 sc->sc_tinfo[periph->periph_target].lubusy 1525 &= ~(1 << periph->periph_lun); 1526 sc->sc_active--; 1527 } 1528 /* 1529 * locate acb of reselecting device 1530 * set sc->sc_nexus to acb 1531 */ 1532 TAILQ_FOREACH(acb, &sc->nexus_list, chain) { 1533 struct scsipi_periph *periph = acb->xs->xs_periph; 1534 if (reselid != periph->periph_target || 1535 reselun != periph->periph_lun) { 1536 continue; 1537 } 1538 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1539 sc->sc_nexus = acb; 1540 sc->sc_flags |= acb->intstat; 1541 acb->intstat = 0; 1542 osiop_write_4(sc, OSIOP_DSA, 1543 dsdma->dm_segs[0].ds_addr + acb->dsoffset); 1544 osiop_write_1(sc, OSIOP_SXFER, 1545 sc->sc_sync[reselid].sxfer); 1546 osiop_write_1(sc, OSIOP_SBCL, 1547 sc->sc_sync[reselid].sbcl); 1548 break; 1549 } 1550 if (acb == NULL) { 1551 printf("%s: target ID %02x reselect nexus_list %p\n", 1552 sc->sc_dev.dv_xname, reselid, 1553 TAILQ_FIRST(&sc->nexus_list)); 1554 panic("unable to find reselecting device"); 1555 } 1556 1557 osiop_write_4(sc, OSIOP_TEMP, 0); 1558 osiop_write_1(sc, OSIOP_DCNTL, 1559 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1560 return (0); 1561 } 1562 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { 1563 #ifdef OSIOP_DEBUG 1564 u_int8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); 1565 1566 /* reselect was interrupted (by Sig_P or select) */ 1567 if (osiop_debug & DEBUG_DISC || 1568 (ctest2 & OSIOP_CTEST2_SIGP) == 0) 1569 printf("%s: reselect interrupted (Sig_P?) " 1570 "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1571 sc->sc_dev.dv_xname, 1572 osiop_read_1(sc, OSIOP_SCNTL1), ctest2, 1573 osiop_read_1(sc, OSIOP_SFBR), istat, 1574 osiop_read_1(sc, OSIOP_ISTAT)); 1575 #endif 1576 /* XXX assumes it was not select */ 1577 if (sc->sc_nexus == NULL) { 1578 #ifdef OSIOP_DEBUG 1579 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1580 sc->sc_dev.dv_xname); 1581 #if 0 1582 osiop_dump(sc); 1583 #ifdef DDB 1584 Debugger(); 1585 #endif 1586 #endif 1587 #endif 1588 osiop_write_1(sc, OSIOP_DCNTL, 1589 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1590 return (0); 1591 } 1592 target = sc->sc_nexus->xs->xs_periph->periph_target; 1593 osiop_write_4(sc, OSIOP_TEMP, 0); 1594 osiop_write_4(sc, OSIOP_DSA, 1595 dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); 1596 osiop_write_1(sc, OSIOP_SXFER, sc->sc_sync[target].sxfer); 1597 osiop_write_1(sc, OSIOP_SBCL, sc->sc_sync[target].sbcl); 1598 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); 1599 return (0); 1600 } 1601 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { 1602 /* Unrecognized message in byte */ 1603 if (acb == NULL) 1604 printf("%s: Bad message-in with no active command?\n", 1605 sc->sc_dev.dv_xname); 1606 printf("%s: Unrecognized message in data " 1607 "sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname, 1608 osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], 1609 osiop_read_1(sc, OSIOP_SBCL)); 1610 /* what should be done here? */ 1611 osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); 1612 bus_dmamap_sync(sc->sc_dmat, dsdma, 1613 acb->dsoffset, sizeof(struct osiop_ds), 1614 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1615 return (0); 1616 } 1617 if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { 1618 /* Status phase wasn't followed by message in phase? */ 1619 printf("%s: Status phase not followed by message in phase? " 1620 "sbcl %x sbdl %x\n", sc->sc_dev.dv_xname, 1621 osiop_read_1(sc, OSIOP_SBCL), 1622 osiop_read_1(sc, OSIOP_SBDL)); 1623 if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { 1624 /* It is now, just continue the script? */ 1625 osiop_write_1(sc, OSIOP_DCNTL, 1626 osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); 1627 return (0); 1628 } 1629 } 1630 if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { 1631 printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", 1632 intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1633 osiop_read_1(sc, OSIOP_SBCL)); 1634 osiop_reset(sc); 1635 *status = SCSI_OSIOP_NOSTATUS; 1636 return (0); /* osiop_reset has cleaned up */ 1637 } 1638 if (sstat0 & OSIOP_SSTAT0_SGE) 1639 printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname); 1640 if (sstat0 & OSIOP_SSTAT0_PAR) 1641 printf("%s: Parity Error\n", sc->sc_dev.dv_xname); 1642 if (dstat & OSIOP_DSTAT_IID) 1643 printf("%s: Invalid instruction detected\n", 1644 sc->sc_dev.dv_xname); 1645 bad_phase: 1646 /* 1647 * temporary panic for unhandled conditions 1648 * displays various things about the 53C710 status and registers 1649 * then panics. 1650 * XXXX need to clean this up to print out the info, reset, and continue 1651 */ 1652 printf("osiop_chkintr: target %x ds %p\n", target, ds); 1653 printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, 1654 sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset, 1655 osiop_read_4(sc, OSIOP_DSP), 1656 osiop_read_4(sc, OSIOP_DBC)); 1657 printf("osiop_chkintr: istat %x dstat %x sstat0 %x " 1658 "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", 1659 istat, dstat, sstat0, intcode, 1660 osiop_read_4(sc, OSIOP_DSA), 1661 osiop_read_1(sc, OSIOP_SBCL), 1662 ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], 1663 osiop_read_1(sc, OSIOP_SFBR)); 1664 #ifdef OSIOP_DEBUG 1665 if (osiop_debug & DEBUG_DMA) 1666 panic("osiop_chkintr: **** temp ****"); 1667 #endif 1668 #ifdef DDB 1669 Debugger(); 1670 #endif 1671 osiop_reset(sc); /* hard reset */ 1672 *status = SCSI_OSIOP_NOSTATUS; 1673 acb->status = ACB_S_DONE; 1674 return (0); /* osiop_reset cleaned up */ 1675 } 1676 1677 void 1678 osiop_select(sc) 1679 struct osiop_softc *sc; 1680 { 1681 struct osiop_acb *acb = sc->sc_nexus; 1682 1683 #ifdef OSIOP_DEBUG 1684 if (osiop_debug & DEBUG_CMD) 1685 printf("%s: select ", sc->sc_dev.dv_xname); 1686 #endif 1687 1688 if (acb->xs->xs_control & XS_CTL_POLL || sc->sc_flags & OSIOP_NODMA) { 1689 sc->sc_flags |= OSIOP_INTSOFF; 1690 sc->sc_flags &= ~OSIOP_INTDEFER; 1691 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1692 osiop_write_1(sc, OSIOP_SIEN, 0); 1693 osiop_write_1(sc, OSIOP_DIEN, 0); 1694 } 1695 #if 0 1696 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { 1697 sc->sc_flags &= ~OSIOP_INTSOFF; 1698 if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { 1699 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1700 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1701 } 1702 #endif 1703 } 1704 #ifdef OSIOP_DEBUG 1705 if (osiop_debug & DEBUG_CMD) 1706 printf("osiop_select: target %x cmd %02x ds %p\n", 1707 acb->xs->xs_periph->periph_target, 1708 acb->xs->cmd->opcode, sc->sc_nexus->ds); 1709 #endif 1710 1711 osiop_start(sc); 1712 1713 return; 1714 } 1715 1716 /* 1717 * 53C710 interrupt handler 1718 */ 1719 1720 void 1721 osiop_intr(sc) 1722 struct osiop_softc *sc; 1723 { 1724 int status, s; 1725 u_int8_t istat, dstat, sstat0; 1726 1727 s = splbio(); 1728 1729 istat = sc->sc_istat; 1730 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { 1731 splx(s); 1732 return; 1733 } 1734 1735 /* Got a valid interrupt on this device; set by MD handler */ 1736 dstat = sc->sc_dstat; 1737 sstat0 = sc->sc_sstat0; 1738 sc->sc_istat = 0; 1739 #ifdef OSIOP_DEBUG 1740 if (!sc->sc_active) { 1741 /* XXX needs sync */ 1742 printf("%s: spurious interrupt? " 1743 "istat %x dstat %x sstat0 %x nexus %p status %x\n", 1744 sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus, 1745 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); 1746 } 1747 #endif 1748 1749 #ifdef OSIOP_DEBUG 1750 if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { 1751 /* XXX needs sync */ 1752 printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " 1753 "sbcl %x dsp %x dcmd %x sts %x msg %x\n", 1754 sc->sc_dev.dv_xname, 1755 istat, dstat, sstat0, 1756 osiop_read_4(sc, OSIOP_DSPS), 1757 osiop_read_1(sc, OSIOP_SBCL), 1758 osiop_read_4(sc, OSIOP_DSP), 1759 osiop_read_4(sc, OSIOP_DBC), 1760 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, 1761 (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); 1762 } 1763 #endif 1764 if (sc->sc_flags & OSIOP_INTDEFER) { 1765 sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); 1766 osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); 1767 osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); 1768 } 1769 if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { 1770 #if 0 1771 if (status == SCSI_OSIOP_NOSTATUS) 1772 printf("osiop_intr: no valid status \n"); 1773 #endif 1774 if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != 1775 OSIOP_INTSOFF) { 1776 #if 0 1777 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { 1778 struct scsipi_periph *periph; 1779 1780 periph = sc->sc_nexus->xs->xs_periph; 1781 printf("%s: SCSI bus busy at completion" 1782 " targ %d sbcl %02x sfbr %x lcrc " 1783 "%02x dsp +%x\n", sc->sc_dev.dv_xname, 1784 periph->periphtarget, 1785 osiop_read_1(sc, OSIOP_SBCL), 1786 osiop_read_1(sc, OSIOP_SFBR), 1787 osiop_read_1(sc, OSIOP_LCRC), 1788 osiop_read_4(sc, OSIOP_DSP) - 1789 sc->sc_scrdma->dm_segs[0].ds_addr); 1790 } 1791 #endif 1792 osiop_scsidone(sc->sc_nexus, status); 1793 } 1794 } 1795 splx(s); 1796 } 1797 1798 /* 1799 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1800 * not be correct for other 53c710 boards. 1801 * 1802 */ 1803 void 1804 scsi_period_to_osiop(sc, target) 1805 struct osiop_softc *sc; 1806 int target; 1807 { 1808 int period, offset, sxfer, sbcl = 0; 1809 #ifdef DEBUG_SYNC 1810 int i; 1811 #endif 1812 1813 period = sc->sc_nexus->ds->msgbuf[4]; 1814 offset = sc->sc_nexus->ds->msgbuf[5]; 1815 #ifdef DEBUG_SYNC 1816 sxfer = 0; 1817 if (offset <= OSIOP_MAX_OFFSET) 1818 sxfer = offset; 1819 for (i = 0; i < sizeof(sync_tab) / sizeof(sync_tab[0]); i++) { 1820 if (period <= sync_tab[i].p) { 1821 sxfer |= sync_tab[i].r & 0x70; 1822 sbcl = sync_tab[i].r & 0x03; 1823 break; 1824 } 1825 } 1826 printf("osiop sync old: osiop_sxfr %02x, osiop_sbcl %02x\n", 1827 sxfer, sbcl); 1828 #endif 1829 for (sbcl = 1; sbcl < 4; sbcl++) { 1830 sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; 1831 if (sxfer >= 0 && sxfer <= 7) 1832 break; 1833 } 1834 if (sbcl > 3) { 1835 printf("osiop sync: unable to compute sync params " 1836 "for period %d ns\n", period * 4); 1837 /* 1838 * XXX need to pick a value we can do and renegotiate 1839 */ 1840 sxfer = sbcl = 0; 1841 } else { 1842 sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? 1843 offset : OSIOP_MAX_OFFSET); 1844 #ifdef DEBUG_SYNC 1845 printf("osiop sync: params for period %dns: sxfer %x sbcl %x", 1846 period * 4, sxfer, sbcl); 1847 printf(" actual period %dns\n", 1848 sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); 1849 #endif 1850 } 1851 sc->sc_sync[target].sxfer = sxfer; 1852 sc->sc_sync[target].sbcl = sbcl; 1853 #ifdef DEBUG_SYNC 1854 printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); 1855 #endif 1856 } 1857 1858 void 1859 osiop_timeout(arg) 1860 void *arg; 1861 { 1862 struct osiop_acb *acb = arg; 1863 struct scsipi_xfer *xs = acb->xs; 1864 struct osiop_softc *sc = acb->sc; 1865 int s; 1866 1867 scsipi_printaddr(xs->xs_periph); 1868 printf("command timeout\n"); 1869 1870 s = splbio(); 1871 /* reset the scsi bus */ 1872 osiop_resetbus(sc); 1873 1874 /* deactivate callout */ 1875 callout_stop(&xs->xs_callout); 1876 acb->flags |= ACB_F_TIMEOUT; 1877 osiop_reset(sc); 1878 splx(s); 1879 return; 1880 } 1881 1882 #ifdef OSIOP_DEBUG 1883 1884 #if OSIOP_TRACE_SIZE 1885 void 1886 osiop_dump_trace() 1887 { 1888 int i; 1889 1890 printf("osiop trace: next index %d\n", osiop_trix); 1891 i = osiop_trix; 1892 do { 1893 printf("%3d: '%c' %02x %02x %02x\n", i, 1894 osiop_trbuf[i], osiop_trbuf[i + 1], 1895 osiop_trbuf[i + 2], osiop_trbuf[i + 3]); 1896 i = (i + 4) & (OSIOP_TRACE_SIZE - 1); 1897 } while (i != osiop_trix); 1898 } 1899 #endif 1900 1901 void 1902 osiop_dump_acb(acb) 1903 struct osiop_acb *acb; 1904 { 1905 u_int8_t *b; 1906 int i; 1907 1908 printf("acb@%p ", acb); 1909 if (acb->xs == NULL) { 1910 printf("<unused>\n"); 1911 return; 1912 } 1913 1914 b = (u_int8_t *)&acb->xs->cmd; 1915 printf("(%d:%d) status %2x cmdlen %2ld cmd ", 1916 acb->xs->xs_periph->periph_target, 1917 acb->xs->xs_periph->periph_lun, acb->status, acb->cmdlen); 1918 for (i = acb->cmdlen; i > 0; i--) 1919 printf(" %02x", *b++); 1920 printf("\n"); 1921 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1922 acb->xs->datalen); 1923 printf("va %p:%lx ", acb->data, acb->datalen); 1924 printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); 1925 } 1926 1927 void 1928 osiop_dump(sc) 1929 struct osiop_softc *sc; 1930 { 1931 struct osiop_acb *acb; 1932 int i, s; 1933 1934 s = splbio(); 1935 #if OSIOP_TRACE_SIZE 1936 osiop_dump_trace(); 1937 #endif 1938 printf("%s@%p istat %02x\n", 1939 sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT)); 1940 if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { 1941 printf("Free list:\n"); 1942 while (acb) { 1943 osiop_dump_acb(acb); 1944 acb = TAILQ_NEXT(acb, chain); 1945 } 1946 } 1947 if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { 1948 printf("Ready list:\n"); 1949 while (acb) { 1950 osiop_dump_acb(acb); 1951 acb = TAILQ_NEXT(acb, chain); 1952 } 1953 } 1954 if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { 1955 printf("Nexus list:\n"); 1956 while (acb) { 1957 osiop_dump_acb(acb); 1958 acb = TAILQ_NEXT(acb, chain); 1959 } 1960 } 1961 if (sc->sc_nexus) { 1962 printf("Nexus:\n"); 1963 osiop_dump_acb(sc->sc_nexus); 1964 } 1965 for (i = 0; i < OSIOP_NTGT; i++) { 1966 if (sc->sc_tinfo[i].cmds > 2) { 1967 printf("tgt %d: cmds %d disc %d lubusy %x\n", 1968 i, sc->sc_tinfo[i].cmds, 1969 sc->sc_tinfo[i].dconns, 1970 sc->sc_tinfo[i].lubusy); 1971 } 1972 } 1973 splx(s); 1974 } 1975 #endif 1976
Indexes created Mon Sep 22 05:09:51 GMT 2025