siop2.c revision 1.14.2.1
1 /* $NetBSD: siop2.c,v 1.14.2.1 2000/11/20 19:58:43 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1994,1998 Michael L. Hitch 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)siop.c 7.5 (Berkeley) 5/4/91 40 */ 41 42 /* 43 * AMIGA 53C720/770 scsi adaptor driver 44 */ 45 46 #include "opt_ddb.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/dkstat.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <dev/scsipi/scsi_all.h> 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsiconf.h> 58 #include <machine/cpu.h> 59 #ifdef __m68k__ 60 #include <m68k/include/cacheops.h> 61 #endif 62 #include <amiga/amiga/custom.h> 63 #include <amiga/amiga/isr.h> 64 65 #define ARCH_720 66 67 #include <amiga/dev/siopreg.h> 68 #include <amiga/dev/siopvar.h> 69 70 /* 71 * SCSI delays 72 * In u-seconds, primarily for state changes on the SPC. 73 */ 74 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ 75 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ 76 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ 77 78 void siopng_select __P((struct siop_softc *)); 79 void siopngabort __P((struct siop_softc *, siop_regmap_p, char *)); 80 void siopngerror __P((struct siop_softc *, siop_regmap_p, u_char)); 81 void siopngstart __P((struct siop_softc *)); 82 int siopng_checkintr __P((struct siop_softc *, u_char, u_char, u_short, int *)); 83 void siopngreset __P((struct siop_softc *)); 84 void siopngsetdelay __P((int)); 85 void siopng_scsidone __P((struct siop_acb *, int)); 86 void siopng_sched __P((struct siop_softc *)); 87 int siopng_poll __P((struct siop_softc *, struct siop_acb *)); 88 void siopngintr __P((struct siop_softc *)); 89 void scsi_period_to_siopng __P((struct siop_softc *, int)); 90 void siopng_start __P((struct siop_softc *, int, int, u_char *, int, u_char *, int)); 91 void siopng_dump_acb __P((struct siop_acb *)); 92 93 /* 53C720/770 script */ 94 const 95 #include <amiga/dev/siop2_script.out> 96 97 /* default to not inhibit sync negotiation on any drive */ 98 u_char siopng_inhibit_sync[16] = { 99 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 100 }; /* initialize, so patchable */ 101 102 u_char siopng_inhibit_wide[16] = { 103 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 104 }; /* initialize, so patchable */ 105 106 u_char siopng_allow_disc[16] = { 107 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 108 }; 109 110 int siopng_no_dma = 0; 111 112 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */ 113 114 int siopng_cmd_wait = SCSI_CMD_WAIT; 115 int siopng_data_wait = SCSI_DATA_WAIT; 116 int siopng_init_wait = SCSI_INIT_WAIT; 117 118 #define DEBUG_SYNC 119 120 #ifdef DEBUG 121 /* 122 * 0x01 - full debug 123 * 0x02 - DMA chaining 124 * 0x04 - siopngintr 125 * 0x08 - phase mismatch 126 * 0x10 - <not used> 127 * 0x20 - panic on unhandled exceptions 128 * 0x100 - disconnect/reselect 129 */ 130 int siopng_debug = 0; 131 int siopngsync_debug = 0; 132 int siopngdma_hits = 0; 133 int siopngdma_misses = 0; 134 int siopngchain_ints = 0; 135 int siopngstarts = 0; 136 int siopngints = 0; 137 int siopngphmm = 0; 138 #define SIOP_TRACE_SIZE 128 139 #define SIOP_TRACE(a,b,c,d) \ 140 siopng_trbuf[siopng_trix] = (a); \ 141 siopng_trbuf[siopng_trix+1] = (b); \ 142 siopng_trbuf[siopng_trix+2] = (c); \ 143 siopng_trbuf[siopng_trix+3] = (d); \ 144 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1); 145 u_char siopng_trbuf[SIOP_TRACE_SIZE]; 146 int siopng_trix; 147 void siopng_dump __P((struct siop_softc *)); 148 void siopng_dump_trace __P((void)); 149 #else 150 #define SIOP_TRACE(a,b,c,d) 151 #endif 152 153 154 static char *siopng_chips[] = { 155 "720", "720SE", "770", "0x3", 156 "810A", "0x5", "0x6", "0x7", 157 "0x8", "0x9", "0xA", "0xB", 158 "0xC", "0xD", "0xE", "0xF", 159 }; 160 161 /* 162 * default minphys routine for siopng based controllers 163 */ 164 void 165 siopng_minphys(bp) 166 struct buf *bp; 167 { 168 169 /* 170 * No max transfer at this level. 171 */ 172 minphys(bp); 173 } 174 175 /* 176 * used by specific siopng controller 177 * 178 */ 179 void 180 siopng_scsipi_request(chan, req, arg) 181 struct scsipi_channel *chan; 182 scsipi_adapter_req_t req; 183 void *arg; 184 { 185 struct scsipi_xfer *xs; 186 struct scsipi_periph *periph; 187 struct siop_acb *acb; 188 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 189 int flags, s; 190 191 switch (req) { 192 case ADAPTER_REQ_RUN_XFER: 193 xs = arg; 194 periph = xs->xs_periph; 195 flags = xs->xs_control; 196 197 /* XXXX ?? */ 198 if (flags & XS_CTL_DATA_UIO) 199 panic("siopng: scsi data uio requested"); 200 201 /* XXXX ?? */ 202 if (sc->sc_nexus && flags & XS_CTL_POLL) 203 /* panic("siopng_scsicmd: busy");*/ 204 printf("siopng_scsicmd: busy\n"); 205 206 s = splbio(); 207 acb = sc->free_list.tqh_first; 208 if (acb) { 209 TAILQ_REMOVE(&sc->free_list, acb, chain); 210 } 211 splx(s); 212 213 #ifdef DIAGNOSTIC 214 /* 215 * This should never happen as we track the resources 216 * in the mid-layer. 217 */ 218 if (acb == NULL) { 219 scsipi_printaddr(periph); 220 printf("unable to allocate acb\n"); 221 panic("sea_scsipi_request"); 222 } 223 #endif 224 acb->flags = ACB_ACTIVE; 225 acb->xs = xs; 226 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 227 acb->clen = xs->cmdlen; 228 acb->daddr = xs->data; 229 acb->dleft = xs->datalen; 230 231 s = splbio(); 232 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 233 234 if (sc->sc_nexus == NULL) 235 siopng_sched(sc); 236 237 splx(s); 238 239 if (flags & XS_CTL_POLL || siopng_no_dma) 240 siopng_poll(sc, acb); 241 return; 242 243 case ADAPTER_REQ_GROW_RESOURCES: 244 return; 245 246 case ADAPTER_REQ_SET_XFER_MODE: 247 return; 248 } 249 } 250 251 int 252 siopng_poll(sc, acb) 253 struct siop_softc *sc; 254 struct siop_acb *acb; 255 { 256 siop_regmap_p rp = sc->sc_siopp; 257 struct scsipi_xfer *xs = acb->xs; 258 int i; 259 int status; 260 u_char istat; 261 u_char dstat; 262 u_short sist; 263 int s; 264 int to; 265 266 s = splbio(); 267 to = xs->timeout / 1000; 268 if (sc->nexus_list.tqh_first) 269 printf("%s: siopng_poll called with disconnected device\n", 270 sc->sc_dev.dv_xname); 271 for (;;) { 272 /* use cmd_wait values? */ 273 i = 50000; 274 /* XXX spl0(); */ 275 while (((istat = rp->siop_istat) & 276 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 277 if (--i <= 0) { 278 #ifdef DEBUG 279 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 280 xs->xs_periph->periph_target, acb->cmd.opcode, 281 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 282 rp->siop_dsp - sc->sc_scriptspa, 283 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 284 #endif 285 i = 50000; 286 --to; 287 if (to <= 0) { 288 siopngreset(sc); 289 return(COMPLETE); 290 } 291 } 292 delay(20); 293 } 294 sist = rp->siop_sist; 295 dstat = rp->siop_dstat; 296 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 297 if (acb != sc->sc_nexus) 298 printf("%s: siopng_poll disconnected device completed\n", 299 sc->sc_dev.dv_xname); 300 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 301 sc->sc_flags &= ~SIOP_INTSOFF; 302 rp->siop_sien = sc->sc_sien; 303 rp->siop_dien = sc->sc_dien; 304 } 305 siopng_scsidone(sc->sc_nexus, status); 306 } 307 if (xs->xs_status & XS_STS_DONE) 308 break; 309 } 310 splx(s); 311 return (COMPLETE); 312 } 313 314 /* 315 * start next command that's ready 316 */ 317 void 318 siopng_sched(sc) 319 struct siop_softc *sc; 320 { 321 struct scsipi_periph *periph; 322 struct siop_acb *acb; 323 int i; 324 325 #ifdef DEBUG 326 if (sc->sc_nexus) { 327 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 328 sc->sc_dev.dv_xname, sc->sc_nexus, 329 sc->sc_nexus->xs->xs_periph->periph_target, 330 sc->ready_list.tqh_first, 331 sc->ready_list.tqh_first->xs->xs_periph->periph_target); 332 return; 333 } 334 #endif 335 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 336 periph = acb->xs->xs_periph; 337 i = periph->periph_target; 338 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { 339 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 340 341 TAILQ_REMOVE(&sc->ready_list, acb, chain); 342 sc->sc_nexus = acb; 343 periph = acb->xs->xs_periph; 344 ti = &sc->sc_tinfo[periph->periph_target]; 345 ti->lubusy |= (1 << periph->periph_lun); 346 break; 347 } 348 } 349 350 if (acb == NULL) { 351 #ifdef DEBUGXXX 352 printf("%s: siopng_sched didn't find ready command\n", 353 sc->sc_dev.dv_xname); 354 #endif 355 return; 356 } 357 358 if (acb->xs->xs_control & XS_CTL_RESET) 359 siopngreset(sc); 360 361 #if 0 362 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */ 363 #endif 364 ++sc->sc_active; 365 siopng_select(sc); 366 } 367 368 void 369 siopng_scsidone(acb, stat) 370 struct siop_acb *acb; 371 int stat; 372 { 373 struct scsipi_xfer *xs; 374 struct scsipi_periph *periph; 375 struct siop_softc *sc; 376 int dosched = 0; 377 378 if (acb == NULL || (xs = acb->xs) == NULL) { 379 #ifdef DIAGNOSTIC 380 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 381 #if defined(DEBUG) && defined(DDB) 382 Debugger(); 383 #endif 384 #endif 385 return; 386 } 387 periph = xs->xs_periph; 388 sc = (void *)periph->periph_chan->chan_adapter->adapt_dev; 389 /* 390 * is this right? 391 */ 392 xs->status = stat; 393 394 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 395 if (stat == SCSI_CHECK) { 396 struct scsipi_sense *ss = (void *)&acb->cmd; 397 bzero(ss, sizeof(*ss)); 398 ss->opcode = REQUEST_SENSE; 399 ss->byte2 = periph->periph_lun << 5; 400 ss->length = sizeof(struct scsipi_sense_data); 401 acb->clen = sizeof(*ss); 402 acb->daddr = (char *)&xs->sense.scsi_sense; 403 acb->dleft = sizeof(struct scsipi_sense_data); 404 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 405 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 406 --sc->sc_active; 407 sc->sc_tinfo[periph->periph_target].lubusy &= 408 ~(1 << periph->periph_lun); 409 sc->sc_tinfo[periph->periph_target].senses++; 410 if (sc->sc_nexus == acb) { 411 sc->sc_nexus = NULL; 412 siopng_sched(sc); 413 } 414 SIOP_TRACE('d','s',0,0) 415 return; 416 } 417 } 418 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 419 xs->error = XS_SENSE; 420 } else { 421 xs->resid = 0; /* XXXX */ 422 } 423 #if whataboutthisone 424 case SCSI_BUSY: 425 xs->error = XS_BUSY; 426 break; 427 #endif 428 xs->xs_status |= XS_STS_DONE; 429 430 /* 431 * Remove the ACB from whatever queue it's on. We have to do a bit of 432 * a hack to figure out which queue it's on. Note that it is *not* 433 * necessary to cdr down the ready queue, but we must cdr down the 434 * nexus queue and see if it's there, so we can mark the unit as no 435 * longer busy. This code is sickening, but it works. 436 */ 437 if (acb == sc->sc_nexus) { 438 sc->sc_nexus = NULL; 439 sc->sc_tinfo[periph->periph_target].lubusy &= 440 ~(1<<periph->periph_lun); 441 if (sc->ready_list.tqh_first) 442 dosched = 1; /* start next command */ 443 --sc->sc_active; 444 SIOP_TRACE('d','a',stat,0) 445 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 446 TAILQ_REMOVE(&sc->ready_list, acb, chain); 447 SIOP_TRACE('d','r',stat,0) 448 } else { 449 register struct siop_acb *acb2; 450 for (acb2 = sc->nexus_list.tqh_first; acb2; 451 acb2 = acb2->chain.tqe_next) 452 if (acb2 == acb) { 453 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 454 sc->sc_tinfo[periph->periph_target].lubusy 455 &= ~(1<<periph->periph_lun); 456 --sc->sc_active; 457 break; 458 } 459 if (acb2) 460 ; 461 else if (acb->chain.tqe_next) { 462 TAILQ_REMOVE(&sc->ready_list, acb, chain); 463 --sc->sc_active; 464 } else { 465 printf("%s: can't find matching acb\n", 466 sc->sc_dev.dv_xname); 467 #ifdef DDB 468 /* Debugger(); */ 469 #endif 470 } 471 SIOP_TRACE('d','n',stat,0); 472 } 473 /* Put it on the free list. */ 474 acb->flags = ACB_FREE; 475 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 476 477 sc->sc_tinfo[periph->periph_target].cmds++; 478 479 scsipi_done(xs); 480 481 if (dosched && sc->sc_nexus == NULL) 482 siopng_sched(sc); 483 } 484 485 void 486 siopngabort(sc, rp, where) 487 register struct siop_softc *sc; 488 siop_regmap_p rp; 489 char *where; 490 { 491 #ifdef fix_this 492 int i; 493 #endif 494 495 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 496 sc->sc_dev.dv_xname, 497 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 498 rp->siop_sien, rp->siop_sbcl); 499 siopng_dump_registers(sc); 500 501 if (sc->sc_active > 0) { 502 #ifdef TODO 503 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 504 WAIT_CIP (rp); 505 506 GET_SBIC_asr (rp, asr); 507 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 508 { 509 /* ok, get more drastic.. */ 510 511 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 512 delay(25); 513 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 514 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 515 516 return; 517 } 518 519 do 520 { 521 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 522 GET_SBIC_csr (rp, csr); 523 } 524 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 525 && (csr != SBIC_CSR_CMD_INVALID)); 526 #endif 527 528 /* lets just hope it worked.. */ 529 #ifdef fix_this 530 for (i = 0; i < 2; ++i) { 531 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 532 sc->sc_cur) { 533 printf ("siopngabort: cleanup!\n"); 534 sc->sc_iob[i].sc_xs = NULL; 535 } 536 } 537 #endif /* fix_this */ 538 /* sc->sc_active = 0; */ 539 } 540 } 541 542 void 543 siopnginitialize(sc) 544 struct siop_softc *sc; 545 { 546 int i; 547 u_int inhibit_sync; 548 extern u_long scsi_nosync; 549 extern int shift_nosync; 550 551 /* 552 * Need to check that scripts is on a long word boundary 553 * Also should verify that dev doesn't span non-contiguous 554 * physical pages. 555 */ 556 sc->sc_scriptspa = kvtop((caddr_t)siopng_scripts); 557 558 /* 559 * malloc sc_acb to ensure that DS is on a long word boundary. 560 */ 561 562 MALLOC(sc->sc_acb, struct siop_acb *, 563 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 564 if (sc->sc_acb == NULL) 565 panic("siopnginitialize: ACB malloc failed!"); 566 567 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 568 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 569 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 570 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 571 if (sc->sc_minsync < 25) 572 sc->sc_minsync = 25; 573 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 574 if (sc->sc_clock_freq <= 25) { 575 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 576 sc->sc_tcp[0] = sc->sc_tcp[1]; 577 } else if (sc->sc_clock_freq <= 37) { 578 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 579 sc->sc_tcp[0] = sc->sc_tcp[2]; 580 } else if (sc->sc_clock_freq <= 50) { 581 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 582 sc->sc_tcp[0] = sc->sc_tcp[3]; 583 } else { 584 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 585 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 586 } 587 588 if (scsi_nosync) { 589 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 590 shift_nosync += 16; /* XXX maxtarget */ 591 #ifdef DEBUG 592 if (inhibit_sync) 593 printf("%s: Inhibiting synchronous transfer %02x\n", 594 sc->sc_dev.dv_xname, inhibit_sync); 595 #endif 596 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 597 if (inhibit_sync & (1 << i)) 598 siopng_inhibit_sync[i] = 1; 599 } 600 601 siopngreset (sc); 602 } 603 604 void 605 siopngreset(sc) 606 struct siop_softc *sc; 607 { 608 siop_regmap_p rp; 609 u_int i, s; 610 u_short dummy; 611 struct siop_acb *acb; 612 613 rp = sc->sc_siopp; 614 615 if (sc->sc_flags & SIOP_ALIVE) 616 siopngabort(sc, rp, "reset"); 617 618 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 619 620 s = splbio(); 621 622 /* 623 * Reset the chip 624 * XXX - is this really needed? 625 */ 626 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 627 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 628 rp->siop_istat &= ~SIOP_ISTAT_RST; 629 /* 630 * Reset SCSI bus (do we really want this?) 631 */ 632 rp->siop_sien = 0; 633 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 634 delay(1); 635 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 636 637 /* 638 * Set up various chip parameters 639 */ 640 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 641 delay(20); 642 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 643 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 644 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 645 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 646 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 647 rp->siop_dcntl = sc->sc_dcntl; 648 rp->siop_dmode = 0xc0; /* XXX burst length */ 649 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 650 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 651 rp->siop_scid = sc->sc_channel->chan_id | 652 SIOP_SCID_RRE | SIOP_SCID_SRE; 653 rp->siop_respid = 1 << sc->channel->chan_id; 654 rp->siop_dwt = 0x00; 655 rp->siop_stime0 = 0x0c; /* XXXXX check */ 656 657 /* will need to re-negotiate sync xfers */ 658 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 659 660 i = rp->siop_istat; 661 if (i & SIOP_ISTAT_SIP) 662 dummy = rp->siop_sist; 663 if (i & SIOP_ISTAT_DIP) 664 dummy = rp->siop_dstat; 665 666 splx (s); 667 668 delay (siopng_reset_delay * 1000); 669 670 /* 671 * is lower half unterminated? 672 */ 673 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 674 printf(" no SCSI termination, host adapter deactivated.\n"); 675 sc->sc_channel->chan_ntargets = 0; /* XXX */ 676 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 677 /* disable SCSI and DMA interrupts */ 678 sc->sc_sien = 0; 679 sc->sc_dien = 0; 680 rp->siop_sien = sc->sc_sien; 681 rp->siop_dien = sc->sc_dien; 682 683 return; 684 } 685 686 /* 687 * Check if upper half of SCSI bus is unterminated, and disallow 688 * disconnections if it appears to be unterminated. 689 */ 690 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 691 printf(" NO WIDE TERM"); 692 /* XXX need to restrict maximum target ID as well? */ 693 sc->sc_channel->chan_ntargets = 8; 694 for (i = 0; i < 16; ++i) { 695 siopng_allow_disc[i] = 0; 696 siopng_inhibit_wide[i] |= 0x80; 697 } 698 } 699 700 printf("siopng type %s id %d reset V%d\n", 701 siopng_chips[rp->siop_macntl>>4], 702 sc->sc_channel->chan_ntargets, 703 rp->siop_ctest3 >> 4); 704 705 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 706 TAILQ_INIT(&sc->ready_list); 707 TAILQ_INIT(&sc->nexus_list); 708 TAILQ_INIT(&sc->free_list); 709 sc->sc_nexus = NULL; 710 acb = sc->sc_acb; 711 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 712 for (i = 0; i < SIOP_NACB; i++) { 713 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 714 acb++; 715 } 716 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 717 } else { 718 if (sc->sc_nexus != NULL) { 719 sc->sc_nexus->xs->error = XS_RESET; 720 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 721 } 722 while ((acb = sc->nexus_list.tqh_first) > 0) { 723 acb->xs->error = XS_RESET; 724 siopng_scsidone(acb, acb->stat[0]); 725 } 726 } 727 728 sc->sc_flags |= SIOP_ALIVE; 729 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 730 /* enable SCSI and DMA interrupts */ 731 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 732 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 733 SIOP_SIEN_RST | SIOP_SIEN_PAR; 734 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 735 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 736 rp->siop_sien = sc->sc_sien; 737 rp->siop_dien = sc->sc_dien; 738 /*siopng_dump_registers(sc);*/ 739 } 740 741 /* 742 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 743 */ 744 745 void 746 siopng_start (sc, target, lun, cbuf, clen, buf, len) 747 struct siop_softc *sc; 748 int target; 749 int lun; 750 u_char *cbuf; 751 int clen; 752 u_char *buf; 753 int len; 754 { 755 siop_regmap_p rp = sc->sc_siopp; 756 int nchain; 757 int count, tcount; 758 char *addr, *dmaend; 759 struct siop_acb *acb = sc->sc_nexus; 760 #ifdef DEBUG 761 int i; 762 #endif 763 764 #ifdef DEBUG 765 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 766 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 767 rp, &siopng_scripts, &acb->ds, sc->sc_active); 768 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 769 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 770 rp->siop_sien, rp->siop_dien); 771 #ifdef DDB 772 /*Debugger();*/ 773 #endif 774 } 775 #endif 776 acb->msgout[0] = MSG_IDENTIFY | lun; 777 if (siopng_allow_disc[target] & 2 || 778 (siopng_allow_disc[target] && len == 0)) 779 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 780 acb->status = 0; 781 acb->stat[0] = -1; 782 acb->msg[0] = -1; 783 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 784 (sc->sc_sync[target].scntl3 << 24); 785 acb->ds.idlen = 1; 786 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 787 acb->ds.cmdlen = clen; 788 acb->ds.cmdbuf = (char *) kvtop(cbuf); 789 acb->ds.stslen = 1; 790 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 791 acb->ds.msglen = 1; 792 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 793 acb->msg[1] = -1; 794 acb->ds.msginlen = 1; 795 acb->ds.extmsglen = 1; 796 acb->ds.synmsglen = 3; 797 acb->ds.msginbuf = acb->ds.msgbuf + 1; 798 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 799 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 800 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 801 802 if (sc->sc_sync[target].state == NEG_WIDE) { 803 if (siopng_inhibit_wide[target]) { 804 sc->sc_sync[target].state = NEG_SYNC; 805 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 806 #ifdef DEBUG 807 if (siopngsync_debug) 808 printf ("Forcing target %d narrow\n", target); 809 #endif 810 } 811 else { 812 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 813 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 814 acb->msg[2] = -1; 815 acb->msgout[1] = MSG_EXT_MESSAGE; 816 acb->msgout[2] = 2; 817 acb->msgout[3] = MSG_WIDE_REQ; 818 acb->msgout[4] = 1; 819 acb->ds.idlen = 5; 820 acb->ds.synmsglen = 2; 821 sc->sc_sync[target].state = NEG_WAITW; 822 #ifdef DEBUG 823 if (siopngsync_debug) 824 printf("Sending wide request to target %d\n", target); 825 #endif 826 } 827 } 828 if (sc->sc_sync[target].state == NEG_SYNC) { 829 if (siopng_inhibit_sync[target]) { 830 sc->sc_sync[target].state = NEG_DONE; 831 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 832 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 833 sc->sc_sync[target].sxfer = 0; 834 #ifdef DEBUG 835 if (siopngsync_debug) 836 printf ("Forcing target %d asynchronous\n", target); 837 #endif 838 } 839 else { 840 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 841 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 842 acb->msg[2] = -1; 843 acb->msgout[1] = MSG_EXT_MESSAGE; 844 acb->msgout[2] = 3; 845 acb->msgout[3] = MSG_SYNC_REQ; 846 #ifdef MAXTOR_SYNC_KLUDGE 847 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 848 #else 849 acb->msgout[4] = sc->sc_minsync; 850 #endif 851 acb->msgout[5] = SIOP_MAX_OFFSET; 852 acb->ds.idlen = 6; 853 sc->sc_sync[target].state = NEG_WAITS; 854 #ifdef DEBUG 855 if (siopngsync_debug) 856 printf ("Sending sync request to target %d\n", target); 857 #endif 858 } 859 } 860 861 /* 862 * Build physical DMA addresses for scatter/gather I/O 863 */ 864 acb->iob_buf = buf; 865 acb->iob_len = len; 866 acb->iob_curbuf = acb->iob_curlen = 0; 867 nchain = 0; 868 count = len; 869 addr = buf; 870 dmaend = NULL; 871 while (count > 0) { 872 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 873 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 874 tcount = count; 875 876 #if DEBUG_ONLY_IF_DESPERATE 877 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 878 nchain, count, tcount, addr, 879 acb->ds.chain[nchain].databuf); 880 #endif 881 acb->ds.chain[nchain].datalen = tcount; 882 addr += tcount; 883 count -= tcount; 884 if (acb->ds.chain[nchain].databuf == dmaend) { 885 dmaend += acb->ds.chain[nchain].datalen; 886 acb->ds.chain[nchain].datalen = 0; 887 acb->ds.chain[--nchain].datalen += tcount; 888 #ifdef DEBUG 889 ++siopngdma_hits; 890 #endif 891 } 892 else { 893 dmaend = acb->ds.chain[nchain].databuf + 894 acb->ds.chain[nchain].datalen; 895 acb->ds.chain[nchain].datalen = tcount; 896 #ifdef DEBUG 897 if (nchain) /* Don't count miss on first one */ 898 ++siopngdma_misses; 899 #endif 900 } 901 ++nchain; 902 } 903 #ifdef DEBUG 904 if (nchain != 1 && len != 0 && siopng_debug & 3) { 905 printf ("DMA chaining set: %d\n", nchain); 906 for (i = 0; i < nchain; ++i) { 907 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 908 acb->ds.chain[i].datalen); 909 } 910 } 911 #endif 912 913 /* push data cache for all data the 53c720/770 needs to access */ 914 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 915 dma_cachectl (cbuf, clen); 916 if (buf != NULL && len != 0) 917 dma_cachectl (buf, len); 918 #ifdef DEBUG 919 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 920 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 921 rp, &siopng_scripts, &acb->ds, sc->sc_active); 922 #ifdef DDB 923 /*Debugger();*/ 924 #endif 925 } 926 #endif 927 if (sc->nexus_list.tqh_first == NULL) { 928 if (rp->siop_istat & SIOP_ISTAT_CON) 929 printf("%s: siopng_select while connected?\n", 930 sc->sc_dev.dv_xname); 931 rp->siop_temp = 0; 932 #ifndef FIXME 933 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 934 #endif 935 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 936 rp->siop_dsp = sc->sc_scriptspa; 937 SIOP_TRACE('s',1,0,0) 938 } else { 939 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 940 rp->siop_istat = SIOP_ISTAT_SIGP; 941 SIOP_TRACE('s',2,0,0); 942 } 943 else { 944 SIOP_TRACE('s',3,rp->siop_istat,0); 945 } 946 } 947 #ifdef DEBUG 948 ++siopngstarts; 949 #endif 950 } 951 952 /* 953 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 954 */ 955 956 int 957 siopng_checkintr(sc, istat, dstat, sist, status) 958 struct siop_softc *sc; 959 u_char istat; 960 u_char dstat; 961 u_short sist; 962 int *status; 963 { 964 siop_regmap_p rp = sc->sc_siopp; 965 struct siop_acb *acb = sc->sc_nexus; 966 int target = 0; 967 int dfifo, dbc, sstat0, sstat1, sstat2; 968 969 dfifo = rp->siop_dfifo; 970 dbc = rp->siop_dbc0; 971 sstat0 = rp->siop_sstat0; 972 sstat1 = rp->siop_sstat1; 973 sstat2 = rp->siop_sstat2; 974 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 975 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 976 ; 977 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 978 #ifdef DEBUG 979 ++siopngints; 980 #if 0 981 if (siopng_debug & 0x100) { 982 DCIAS(&acb->stat[0]); /* XXX */ 983 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 984 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 985 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 986 acb->msg[0], acb->msg[1], acb->msg[2], 987 acb->msg[3], acb->msg[4], acb->msg[5]); 988 } 989 #endif 990 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 991 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 992 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 993 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 994 sc->sc_scriptspa + sizeof(siopng_scripts)); 995 printf(" istat %x dstat %x sist %x\n", 996 istat, dstat, sist); 997 #ifdef DDB 998 Debugger(); 999 #endif 1000 } 1001 #endif 1002 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 1003 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 1004 /* Normal completion status, or check condition */ 1005 #ifdef DEBUG 1006 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 1007 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 1008 kvtop((caddr_t)&acb->ds)); 1009 panic("*** siopng DSA invalid ***"); 1010 } 1011 #endif 1012 target = acb->xs->xs_periph->periph_target; 1013 if (sc->sc_sync[target].state == NEG_WAITW) { 1014 if (acb->msg[1] == 0xff) 1015 printf ("%s: target %d ignored wide request\n", 1016 sc->sc_dev.dv_xname, target); 1017 else if (acb->msg[1] == MSG_REJECT) 1018 printf ("%s: target %d rejected wide request\n", 1019 sc->sc_dev.dv_xname, target); 1020 else { 1021 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1022 sc->sc_dev.dv_xname, target, acb->msg[1], 1023 acb->msg[2], acb->msg[3], acb->msg[4]); 1024 if (acb->msg[1] == MSG_EXT_MESSAGE && 1025 acb->msg[2] == 2 && 1026 acb->msg[3] == MSG_WIDE_REQ) 1027 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1028 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1029 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1030 } 1031 sc->sc_sync[target].state = NEG_SYNC; 1032 } 1033 if (sc->sc_sync[target].state == NEG_WAITS) { 1034 if (acb->msg[1] == 0xff) 1035 printf ("%s: target %d ignored sync request\n", 1036 sc->sc_dev.dv_xname, target); 1037 else if (acb->msg[1] == MSG_REJECT) 1038 printf ("%s: target %d rejected sync request\n", 1039 sc->sc_dev.dv_xname, target); 1040 else 1041 /* XXX - need to set sync transfer parameters */ 1042 printf("%s: target %d (sync) %02x %02x %02x\n", 1043 sc->sc_dev.dv_xname, target, acb->msg[1], 1044 acb->msg[2], acb->msg[3]); 1045 sc->sc_sync[target].state = NEG_DONE; 1046 } 1047 dma_cachectl(&acb->stat[0], 1); 1048 *status = acb->stat[0]; 1049 #ifdef DEBUG 1050 if (rp->siop_sbcl & SIOP_BSY) { 1051 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1052 rp, &siopng_scripts, &acb->ds);*/ 1053 #ifdef DDB 1054 /*Debugger();*/ 1055 #endif 1056 } 1057 if (acb->msg[0] != 0x00) 1058 printf("%s: message was not COMMAND COMPLETE: %x\n", 1059 sc->sc_dev.dv_xname, acb->msg[0]); 1060 #endif 1061 if (sc->nexus_list.tqh_first) 1062 rp->siop_dcntl |= SIOP_DCNTL_STD; 1063 return 1; 1064 } 1065 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1066 target = acb->xs->xs_periph->periph_target; 1067 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1068 acb->msg[3] == MSG_WIDE_REQ) { 1069 #ifdef DEBUG 1070 if (siopngsync_debug) 1071 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1072 acb->msg[0], acb->msg[1], acb->msg[2], 1073 acb->msg[3], acb->msg[4], acb->msg[5]); 1074 #endif 1075 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1076 if (acb->msg[2] == 2 && 1077 acb->msg[3] == MSG_WIDE_REQ && 1078 acb->msg[4] != 0) { 1079 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1080 printf ("%s: target %d now wide %d\n", 1081 sc->sc_dev.dv_xname, target, 1082 acb->msg[4]); 1083 } 1084 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1085 if (sc->sc_sync[target].state == NEG_WAITW) { 1086 sc->sc_sync[target].state = NEG_SYNC; 1087 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1088 return(0); 1089 } 1090 rp->siop_dcntl |= SIOP_DCNTL_STD; 1091 sc->sc_sync[target].state = NEG_SYNC; 1092 return (0); 1093 } 1094 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1095 acb->msg[3] == MSG_SYNC_REQ) { 1096 #ifdef DEBUG 1097 if (siopngsync_debug) 1098 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1099 acb->msg[0], acb->msg[1], acb->msg[2], 1100 acb->msg[3], acb->msg[4], acb->msg[5]); 1101 #endif 1102 sc->sc_sync[target].sxfer = 0; 1103 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1104 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1105 if (acb->msg[2] == 3 && 1106 acb->msg[3] == MSG_SYNC_REQ && 1107 acb->msg[5] != 0) { 1108 #ifdef MAXTOR_KLUDGE 1109 /* 1110 * Kludge for my Maxtor XT8580S 1111 * It accepts whatever we request, even 1112 * though it won't work. So we ask for 1113 * a short period than we can handle. If 1114 * the device says it can do it, use 208ns. 1115 * If the device says it can do less than 1116 * 100ns, then we limit it to 100ns. 1117 */ 1118 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1119 #ifdef DEBUG 1120 printf ("%d: target %d wanted %dns period\n", 1121 sc->sc_dev.dv_xname, target, 1122 acb->msg[4] * 4); 1123 #endif 1124 if (acb->msg[4] == 50 / 4) 1125 acb->msg[4] = 208 / 4; 1126 else 1127 acb->msg[4] = 100 / 4; 1128 } 1129 #endif /* MAXTOR_KLUDGE */ 1130 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1131 sc->sc_dev.dv_xname, target, 1132 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1133 acb->msg[5]); 1134 scsi_period_to_siopng (sc, target); 1135 } 1136 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1137 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1138 if (sc->sc_sync[target].state == NEG_WAITS) { 1139 sc->sc_sync[target].state = NEG_DONE; 1140 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1141 return(0); 1142 } 1143 rp->siop_dcntl |= SIOP_DCNTL_STD; 1144 sc->sc_sync[target].state = NEG_DONE; 1145 return (0); 1146 } 1147 /* XXX - not SDTR message */ 1148 } 1149 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1150 #ifdef DEBUG 1151 ++siopngphmm; 1152 if (acb == NULL) 1153 printf("%s: Phase mismatch with no active command?\n", 1154 sc->sc_dev.dv_xname); 1155 #endif 1156 if (acb->iob_len) { 1157 int adjust; 1158 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1159 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1160 ++adjust; 1161 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1162 ++adjust; 1163 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1164 ++adjust; 1165 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1166 ++adjust; 1167 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1168 acb->iob_curlen += adjust; 1169 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1170 #ifdef DEBUG 1171 if (siopng_debug & 0x100) { 1172 int i; 1173 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1174 acb->iob_curbuf, acb->iob_curlen, dfifo, 1175 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1176 if (acb->ds.chain[1].datalen) { 1177 for (i = 0; acb->ds.chain[i].datalen; ++i) 1178 printf("chain[%d] addr %p len %lx\n", 1179 i, acb->ds.chain[i].databuf, 1180 acb->ds.chain[i].datalen); 1181 } 1182 } 1183 #endif 1184 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1185 } 1186 #ifdef DEBUG 1187 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1188 if (siopng_debug & 9) 1189 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1190 rp->siop_sbcl, 1191 rp->siop_dsp - sc->sc_scriptspa, 1192 *((long *)&rp->siop_dcmd)); 1193 #endif 1194 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1195 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1196 rp->siop_sbcl, rp->siop_dsp); 1197 #if defined(DEBUG) && defined(DDB) 1198 Debugger(); 1199 #endif 1200 } 1201 switch (rp->siop_sbcl & 7) { 1202 case 0: /* data out */ 1203 case 1: /* data in */ 1204 case 2: /* status */ 1205 case 3: /* command */ 1206 case 6: /* message in */ 1207 case 7: /* message out */ 1208 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1209 break; 1210 default: 1211 goto bad_phase; 1212 } 1213 return 0; 1214 } 1215 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1216 #ifdef DEBUG 1217 if (acb == NULL) 1218 printf("%s: Select timeout with no active command?\n", 1219 sc->sc_dev.dv_xname); 1220 if (rp->siop_sbcl & SIOP_BSY) { 1221 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1222 rp, &siopng_scripts, &acb->ds); 1223 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1224 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1225 if (!(rp->siop_sbcl & SIOP_BSY)) { 1226 printf ("Yikes, it's not busy now!\n"); 1227 #if 0 1228 *status = -1; 1229 if (sc->nexus_list.tqh_first) 1230 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1231 return 1; 1232 #endif 1233 } 1234 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1235 return (0); 1236 #ifdef DDB 1237 Debugger(); 1238 #endif 1239 } 1240 #endif 1241 *status = -1; 1242 acb->xs->error = XS_SELTIMEOUT; 1243 if (sc->nexus_list.tqh_first) 1244 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1245 return 1; 1246 } 1247 if (acb) 1248 target = acb->xs->xs_periph->periph_target; 1249 else 1250 target = 7; 1251 if (sist & SIOP_SIST_UDC) { 1252 #ifdef DEBUG 1253 if (acb == NULL) 1254 printf("%s: Unexpected disconnect with no active command?\n", 1255 sc->sc_dev.dv_xname); 1256 printf ("%s: target %d disconnected unexpectedly\n", 1257 sc->sc_dev.dv_xname, target); 1258 siopng_dump_registers(sc); 1259 siopng_dump(sc); 1260 #endif 1261 #if 0 1262 siopngabort (sc, rp, "siopngchkintr"); 1263 #endif 1264 *status = STS_BUSY; 1265 if (sc->nexus_list.tqh_first) 1266 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1267 return (acb != NULL); 1268 } 1269 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1270 rp->siop_dsps == 0xff02)) { 1271 #ifdef DEBUG 1272 if (siopng_debug & 0x100) 1273 printf ("%s: ID %02x disconnected TEMP %lx (+%lx) curbuf %lx curlen %lx buf %p len %lx dfifo %x dbc %x sstat1 %x starts %d acb %p\n", 1274 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1275 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1276 acb->iob_curbuf, acb->iob_curlen, 1277 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1278 #endif 1279 if (acb == NULL) { 1280 printf("%s: Disconnect with no active command?\n", 1281 sc->sc_dev.dv_xname); 1282 return (0); 1283 } 1284 /* 1285 * XXXX need to update iob_curbuf/iob_curlen to reflect 1286 * current data transferred. If device disconnected in 1287 * the middle of a DMA block, they should already be set 1288 * by the phase change interrupt. If the disconnect 1289 * occurs on a DMA block boundary, we have to figure out 1290 * which DMA block it was. 1291 */ 1292 if (acb->iob_len && rp->siop_temp) { 1293 int n = rp->siop_temp - sc->sc_scriptspa; 1294 1295 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1296 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1297 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1298 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1299 if (n < Ent_datain) 1300 n = (n - Ent_dataout) / 16; 1301 else 1302 n = (n - Ent_datain) / 16; 1303 if (n <= 0 && n > DMAMAXIO) 1304 printf("TEMP invalid %d\n", n); 1305 else { 1306 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1307 acb->iob_curlen = acb->ds.chain[n].datalen; 1308 } 1309 #ifdef DEBUG 1310 if (siopng_debug & 0x100) { 1311 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1312 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1313 acb->iob_curlen); 1314 } 1315 #endif 1316 } 1317 /* 1318 * If data transfer was interrupted by disconnect, iob_curbuf 1319 * and iob_curlen should reflect the point of interruption. 1320 * Adjust the DMA chain so that the data transfer begins 1321 * at the appropriate place upon reselection. 1322 * XXX This should only be done on save data pointer message? 1323 */ 1324 if (acb->iob_curlen) { 1325 int i, j; 1326 1327 #ifdef DEBUG 1328 if (siopng_debug & 0x100) 1329 printf ("%s: adjusting DMA chain\n", 1330 sc->sc_dev.dv_xname); 1331 if (rp->siop_dsps == 0xff02) 1332 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1333 sc->sc_dev.dv_xname, 1 << target); 1334 #endif 1335 for (i = 0; i < DMAMAXIO; ++i) { 1336 if (acb->ds.chain[i].datalen == 0) 1337 break; 1338 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1339 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1340 acb->ds.chain[i].datalen)) 1341 break; 1342 } 1343 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1344 printf("couldn't find saved data pointer: "); 1345 printf("curbuf %lx curlen %lx i %d\n", 1346 acb->iob_curbuf, acb->iob_curlen, i); 1347 #ifdef DDB 1348 Debugger(); 1349 #endif 1350 } 1351 #ifdef DEBUG 1352 if (siopng_debug & 0x100) 1353 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1354 acb->ds.chain[0].databuf, 1355 acb->ds.chain[0].datalen, 1356 acb->iob_curbuf, 1357 acb->iob_curlen); 1358 #endif 1359 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1360 acb->ds.chain[0].datalen = acb->iob_curlen; 1361 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1362 #ifdef DEBUG 1363 if (siopng_debug & 0x100) 1364 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1365 acb->ds.chain[j].databuf, 1366 acb->ds.chain[j].datalen, 1367 acb->ds.chain[i].databuf, 1368 acb->ds.chain[i].datalen); 1369 #endif 1370 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1371 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1372 } 1373 if (j < DMAMAXIO) 1374 acb->ds.chain[j].datalen = 0; 1375 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1376 } 1377 ++sc->sc_tinfo[target].dconns; 1378 /* 1379 * add nexus to waiting list 1380 * clear nexus 1381 * try to start another command for another target/lun 1382 */ 1383 acb->status = sc->sc_flags & SIOP_INTSOFF; 1384 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1385 sc->sc_nexus = NULL; /* no current device */ 1386 /* start script to wait for reselect */ 1387 if (sc->sc_nexus == NULL) 1388 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1389 /* XXXX start another command ? */ 1390 if (sc->ready_list.tqh_first) 1391 siopng_sched(sc); 1392 #if 0 1393 else 1394 rp->siop_dcntl |= SIOP_DCNTL_STD; 1395 #endif 1396 return (0); 1397 } 1398 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1399 int reselid = rp->siop_scratcha & 0x7f; 1400 int reselun = rp->siop_sfbr & 0x07; 1401 1402 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1403 #ifdef DEBUG 1404 if (siopng_debug & 0x100) 1405 printf ("%s: target ID %02x reselected dsps %lx\n", 1406 sc->sc_dev.dv_xname, reselid, 1407 rp->siop_dsps); 1408 if ((rp->siop_sfbr & 0x80) == 0) 1409 printf("%s: Reselect message in was not identify: %x\n", 1410 sc->sc_dev.dv_xname, rp->siop_sfbr); 1411 #endif 1412 if (sc->sc_nexus) { 1413 #ifdef DEBUG 1414 if (siopng_debug & 0x100) 1415 printf ("%s: reselect ID %02x w/active\n", 1416 sc->sc_dev.dv_xname, reselid); 1417 #endif 1418 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1419 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy 1420 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun); 1421 --sc->sc_active; 1422 } 1423 /* 1424 * locate acb of reselecting device 1425 * set sc->sc_nexus to acb 1426 */ 1427 for (acb = sc->nexus_list.tqh_first; acb; 1428 acb = acb->chain.tqe_next) { 1429 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1430 reselun != (acb->msgout[0] & 0x07)) 1431 continue; 1432 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1433 sc->sc_nexus = acb; 1434 sc->sc_flags |= acb->status; 1435 acb->status = 0; 1436 DCIAS(kvtop(&acb->stat[0])); 1437 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1438 rp->siop_sxfer = 1439 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; 1440 #ifndef FIXME 1441 rp->siop_scntl3 = 1442 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3; 1443 #endif 1444 break; 1445 } 1446 if (acb == NULL) { 1447 printf("%s: target ID %02x reselect nexus_list %p\n", 1448 sc->sc_dev.dv_xname, reselid, 1449 sc->nexus_list.tqh_first); 1450 panic("unable to find reselecting device"); 1451 } 1452 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1453 rp->siop_temp = 0; 1454 rp->siop_dcntl |= SIOP_DCNTL_STD; 1455 return (0); 1456 } 1457 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1458 #ifdef DEBUG 1459 u_short ctest2 = rp->siop_ctest2; 1460 1461 /* reselect was interrupted (by Sig_P or select) */ 1462 if (siopng_debug & 0x100 || 1463 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1464 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1465 sc->sc_dev.dv_xname, rp->siop_scntl1, 1466 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1467 #endif 1468 /* XXX assumes it was not select */ 1469 if (sc->sc_nexus == NULL) { 1470 #ifdef DEBUG 1471 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1472 sc->sc_dev.dv_xname); 1473 #if 0 1474 siopng_dump(sc); 1475 #ifdef DDB 1476 Debugger(); 1477 #endif 1478 #endif 1479 #endif 1480 rp->siop_dcntl |= SIOP_DCNTL_STD; 1481 return(0); 1482 } 1483 target = sc->sc_nexus->xs->xs_periph->periph_target; 1484 rp->siop_temp = 0; 1485 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1486 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1487 #ifndef FIXME 1488 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1489 #endif 1490 rp->siop_dsp = sc->sc_scriptspa; 1491 return (0); 1492 } 1493 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1494 if (acb == NULL) 1495 printf("%s: Bad message-in with no active command?\n", 1496 sc->sc_dev.dv_xname); 1497 /* Unrecognized message in byte */ 1498 dma_cachectl (&acb->msg[1],1); 1499 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1500 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1501 /* what should be done here? */ 1502 DCIAS(kvtop(&acb->msg[1])); 1503 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1504 return (0); 1505 } 1506 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1507 /* Status phase wasn't followed by message in phase? */ 1508 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1509 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1510 if (rp->siop_sbcl == 0xa7) { 1511 /* It is now, just continue the script? */ 1512 rp->siop_dcntl |= SIOP_DCNTL_STD; 1513 return (0); 1514 } 1515 } 1516 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1517 dma_cachectl (&acb->stat[0], 1); 1518 dma_cachectl (&acb->msg[0], 1); 1519 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1520 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1521 rp->siop_sbcl); 1522 siopngreset (sc); 1523 *status = -1; 1524 return 0; /* siopngreset has cleaned up */ 1525 } 1526 if (sist & SIOP_SIST_SGE) 1527 printf ("SIOP: SCSI Gross Error\n"); 1528 if (sist & SIOP_SIST_PAR) 1529 printf ("SIOP: Parity Error\n"); 1530 if (dstat & SIOP_DSTAT_IID) 1531 printf ("SIOP: Invalid instruction detected\n"); 1532 bad_phase: 1533 /* 1534 * temporary panic for unhandled conditions 1535 * displays various things about the 53C720/770 status and registers 1536 * then panics. 1537 * XXXX need to clean this up to print out the info, reset, and continue 1538 */ 1539 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1540 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1541 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1542 *((long *)&rp->siop_dcmd)); 1543 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1544 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1545 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1546 #ifdef DEBUG 1547 if (siopng_debug & 0x20) 1548 panic("siopngchkintr: **** temp ****"); 1549 #endif 1550 #ifdef DDB 1551 Debugger (); 1552 #endif 1553 siopngreset (sc); /* hard reset */ 1554 *status = -1; 1555 return 0; /* siopngreset cleaned up */ 1556 } 1557 1558 void 1559 siopng_select(sc) 1560 struct siop_softc *sc; 1561 { 1562 siop_regmap_p rp; 1563 struct siop_acb *acb = sc->sc_nexus; 1564 1565 #ifdef DEBUG 1566 if (siopng_debug & 1) 1567 printf ("%s: select ", sc->sc_dev.dv_xname); 1568 #endif 1569 1570 rp = sc->sc_siopp; 1571 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1572 sc->sc_flags |= SIOP_INTSOFF; 1573 sc->sc_flags &= ~SIOP_INTDEFER; 1574 if ((rp->siop_istat & 0x08) == 0) { 1575 rp->siop_sien = 0; 1576 rp->siop_dien = 0; 1577 } 1578 #if 0 1579 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1580 sc->sc_flags &= ~SIOP_INTSOFF; 1581 if ((rp->siop_istat & 0x08) == 0) { 1582 rp->siop_sien = sc->sc_sien; 1583 rp->siop_dien = sc->sc_dien; 1584 } 1585 #endif 1586 } 1587 #ifdef DEBUG 1588 if (siopng_debug & 1) 1589 printf ("siopng_select: target %x cmd %02x ds %p\n", 1590 acb->xs->xs_periph->periph_target, acb->cmd.opcode, 1591 &sc->sc_nexus->ds); 1592 #endif 1593 1594 siopng_start(sc, acb->xs->xs_periph->periph_target, 1595 acb->xs->xs_periph->periph_lun, 1596 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1597 1598 return; 1599 } 1600 1601 /* 1602 * 53C720/770 interrupt handler 1603 */ 1604 1605 void 1606 siopngintr (sc) 1607 register struct siop_softc *sc; 1608 { 1609 siop_regmap_p rp; 1610 u_char istat, dstat; 1611 u_short sist; 1612 int status; 1613 int s = splbio(); 1614 1615 istat = sc->sc_istat; 1616 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1617 splx(s); 1618 return; 1619 } 1620 1621 /* Got a valid interrupt on this device */ 1622 rp = sc->sc_siopp; 1623 dstat = sc->sc_dstat; 1624 sist = sc->sc_sist; 1625 if (dstat & SIOP_DSTAT_SIR) 1626 sc->sc_intcode = rp->siop_dsps; 1627 sc->sc_istat = 0; 1628 #ifdef DEBUG 1629 if (siopng_debug & 1) 1630 printf ("%s: intr istat %x dstat %x sist %x\n", 1631 sc->sc_dev.dv_xname, istat, dstat, sist); 1632 if (!sc->sc_active) { 1633 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1634 sc->sc_dev.dv_xname, istat, dstat, sist, 1635 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1636 } 1637 #endif 1638 1639 #ifdef DEBUG 1640 if (siopng_debug & 5) { 1641 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1642 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1643 sc->sc_dev.dv_xname, istat, dstat, sist, 1644 rp->siop_dsps, rp->siop_sbcl, 1645 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1646 } 1647 #endif 1648 if (sc->sc_flags & SIOP_INTDEFER) { 1649 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1650 rp->siop_sien = sc->sc_sien; 1651 rp->siop_dien = sc->sc_dien; 1652 } 1653 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1654 #if 1 1655 if (status == 0xff) 1656 printf ("siopngintr: status == 0xff\n"); 1657 #endif 1658 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1659 #if 0 1660 if (rp->siop_sbcl & SIOP_BSY) { 1661 printf ("%s: SCSI bus busy at completion", 1662 sc->sc_dev.dv_xname); 1663 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1664 sc->sc_nexus->xs->xs_periph->periph_target, 1665 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1666 rp->siop_dsp - sc->sc_scriptspa); 1667 } 1668 #endif 1669 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1670 sc->sc_nexus->stat[0] : -1); 1671 } 1672 } 1673 splx(s); 1674 } 1675 1676 /* 1677 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1678 * not be correct for other 53c710 boards. 1679 * 1680 */ 1681 void 1682 scsi_period_to_siopng (sc, target) 1683 struct siop_softc *sc; 1684 int target; 1685 { 1686 int period, offset, sxfer, scntl3 = 0; 1687 1688 period = sc->sc_nexus->msg[4]; 1689 offset = sc->sc_nexus->msg[5]; 1690 #ifdef FIXME 1691 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1692 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1693 if (sxfer >= 0 && sxfer <= 7) 1694 break; 1695 } 1696 if (scntl3 > 3) { 1697 printf("siopng sync: unable to compute sync params for period %dns\n", 1698 period * 4); 1699 /* 1700 * XXX need to pick a value we can do and renegotiate 1701 */ 1702 sxfer = scntl3 = 0; 1703 } else { 1704 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1705 offset : SIOP_MAX_OFFSET); 1706 #ifdef DEBUG_SYNC 1707 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1708 period * 4, sxfer, scntl3); 1709 printf(" actual period %dns\n", 1710 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1711 #endif /* DEBUG_SYNC */ 1712 } 1713 #else /* FIXME */ 1714 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1715 sxfer |= 0x20; /* XXX XFERP: 5 */ 1716 #ifndef FIXME 1717 if (period <= (50 / 4)) /* XXX */ 1718 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1719 else if (period <= (100 / 4)) 1720 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1721 else if (period <= (200 / 4)) 1722 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1723 else 1724 scntl3 = 0xff; /* XXX ??? */ 1725 #else 1726 scntl3 = 5; 1727 #endif 1728 #endif 1729 sc->sc_sync[target].sxfer = sxfer; 1730 sc->sc_sync[target].scntl3 = scntl3 | 1731 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1732 #ifdef DEBUG_SYNC 1733 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1734 #endif 1735 } 1736 1737 void 1738 siopng_dump_registers(sc) 1739 struct siop_softc *sc; 1740 { 1741 siop_regmap_p rp = sc->sc_siopp; 1742 1743 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1744 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1745 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1746 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1747 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1748 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1749 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1750 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1751 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1752 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1753 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1754 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1755 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1756 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1757 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1758 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1759 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1760 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1761 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1762 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1763 printf(" sidl %04x sodl %04x sbdl %04x\n", 1764 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1765 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1766 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1767 rp->siop_dsp - sc->sc_scriptspa : 0); 1768 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1769 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1770 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1771 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1772 } 1773 1774 #ifdef DEBUG 1775 1776 #if SIOP_TRACE_SIZE 1777 void 1778 siopng_dump_trace() 1779 { 1780 int i; 1781 1782 printf("siopng trace: next index %d\n", siopng_trix); 1783 i = siopng_trix; 1784 do { 1785 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1786 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1787 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1788 } while (i != siopng_trix); 1789 } 1790 #endif 1791 1792 void 1793 siopng_dump_acb(acb) 1794 struct siop_acb *acb; 1795 { 1796 u_char *b = (u_char *) &acb->cmd; 1797 int i; 1798 1799 printf("acb@%p ", acb); 1800 if (acb->xs == NULL) { 1801 printf("<unused>\n"); 1802 return; 1803 } 1804 printf("(%d:%d) flags %2x clen %2d cmd ", 1805 acb->xs->xs_periph->periph_target, 1806 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); 1807 for (i = acb->clen; i; --i) 1808 printf(" %02x", *b++); 1809 printf("\n"); 1810 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1811 acb->xs->datalen); 1812 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1813 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1814 } 1815 1816 void 1817 siopng_dump(sc) 1818 struct siop_softc *sc; 1819 { 1820 struct siop_acb *acb; 1821 siop_regmap_p rp = sc->sc_siopp; 1822 int s; 1823 int i; 1824 1825 s = splbio(); 1826 #if SIOP_TRACE_SIZE 1827 siopng_dump_trace(); 1828 #endif 1829 printf("%s@%p regs %p istat %x\n", 1830 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1831 if ((acb = sc->free_list.tqh_first) > 0) { 1832 printf("Free list:\n"); 1833 while (acb) { 1834 siopng_dump_acb(acb); 1835 acb = acb->chain.tqe_next; 1836 } 1837 } 1838 if ((acb = sc->ready_list.tqh_first) > 0) { 1839 printf("Ready list:\n"); 1840 while (acb) { 1841 siopng_dump_acb(acb); 1842 acb = acb->chain.tqe_next; 1843 } 1844 } 1845 if ((acb = sc->nexus_list.tqh_first) > 0) { 1846 printf("Nexus list:\n"); 1847 while (acb) { 1848 siopng_dump_acb(acb); 1849 acb = acb->chain.tqe_next; 1850 } 1851 } 1852 if (sc->sc_nexus) { 1853 printf("Nexus:\n"); 1854 siopng_dump_acb(sc->sc_nexus); 1855 } 1856 for (i = 0; i < 8; ++i) { 1857 if (sc->sc_tinfo[i].cmds > 2) { 1858 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1859 i, sc->sc_tinfo[i].cmds, 1860 sc->sc_tinfo[i].dconns, 1861 sc->sc_tinfo[i].senses, 1862 sc->sc_tinfo[i].lubusy); 1863 } 1864 } 1865 splx(s); 1866 } 1867 #endif 1868
Indexes created Thu Oct 02 14:10:14 GMT 2025