1 /* $NetBSD: siop2.c,v 1.14 1999/09/30 22:59:53 thorpej 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 int 180 siopng_scsicmd(xs) 181 struct scsipi_xfer *xs; 182 { 183 struct siop_acb *acb; 184 struct siop_softc *sc; 185 struct scsipi_link *slp; 186 int flags, s; 187 188 slp = xs->sc_link; 189 sc = slp->adapter_softc; 190 flags = xs->xs_control; 191 192 /* XXXX ?? */ 193 if (flags & XS_CTL_DATA_UIO) 194 panic("siopng: scsi data uio requested"); 195 196 /* XXXX ?? */ 197 if (sc->sc_nexus && flags & XS_CTL_POLL) 198 /* panic("siopng_scsicmd: busy");*/ 199 printf("siopng_scsicmd: busy\n"); 200 201 s = splbio(); 202 acb = sc->free_list.tqh_first; 203 if (acb) { 204 TAILQ_REMOVE(&sc->free_list, acb, chain); 205 } 206 splx(s); 207 208 if (acb == NULL) { 209 xs->error = XS_DRIVER_STUFFUP; 210 return(TRY_AGAIN_LATER); 211 } 212 213 acb->flags = ACB_ACTIVE; 214 acb->xs = xs; 215 bcopy(xs->cmd, &acb->cmd, xs->cmdlen); 216 acb->clen = xs->cmdlen; 217 acb->daddr = xs->data; 218 acb->dleft = xs->datalen; 219 220 s = splbio(); 221 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); 222 223 if (sc->sc_nexus == NULL) 224 siopng_sched(sc); 225 226 splx(s); 227 228 if (flags & XS_CTL_POLL || siopng_no_dma) 229 return(siopng_poll(sc, acb)); 230 return(SUCCESSFULLY_QUEUED); 231 } 232 233 int 234 siopng_poll(sc, acb) 235 struct siop_softc *sc; 236 struct siop_acb *acb; 237 { 238 siop_regmap_p rp = sc->sc_siopp; 239 struct scsipi_xfer *xs = acb->xs; 240 int i; 241 int status; 242 u_char istat; 243 u_char dstat; 244 u_short sist; 245 int s; 246 int to; 247 248 s = splbio(); 249 to = xs->timeout / 1000; 250 if (sc->nexus_list.tqh_first) 251 printf("%s: siopng_poll called with disconnected device\n", 252 sc->sc_dev.dv_xname); 253 for (;;) { 254 /* use cmd_wait values? */ 255 i = 50000; 256 /* XXX spl0(); */ 257 while (((istat = rp->siop_istat) & 258 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 259 if (--i <= 0) { 260 #ifdef DEBUG 261 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n", 262 xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 263 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp, 264 rp->siop_dsp - sc->sc_scriptspa, 265 *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); 266 #endif 267 i = 50000; 268 --to; 269 if (to <= 0) { 270 siopngreset(sc); 271 return(COMPLETE); 272 } 273 } 274 delay(20); 275 } 276 sist = rp->siop_sist; 277 dstat = rp->siop_dstat; 278 if (siopng_checkintr(sc, istat, dstat, sist, &status)) { 279 if (acb != sc->sc_nexus) 280 printf("%s: siopng_poll disconnected device completed\n", 281 sc->sc_dev.dv_xname); 282 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 283 sc->sc_flags &= ~SIOP_INTSOFF; 284 rp->siop_sien = sc->sc_sien; 285 rp->siop_dien = sc->sc_dien; 286 } 287 siopng_scsidone(sc->sc_nexus, status); 288 } 289 if (xs->xs_status & XS_STS_DONE) 290 break; 291 } 292 splx(s); 293 return (COMPLETE); 294 } 295 296 /* 297 * start next command that's ready 298 */ 299 void 300 siopng_sched(sc) 301 struct siop_softc *sc; 302 { 303 struct scsipi_link *slp; 304 struct siop_acb *acb; 305 int i; 306 307 #ifdef DEBUG 308 if (sc->sc_nexus) { 309 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n", 310 sc->sc_dev.dv_xname, sc->sc_nexus, 311 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 312 sc->ready_list.tqh_first, 313 sc->ready_list.tqh_first->xs->sc_link->scsipi_scsi.target); 314 return; 315 } 316 #endif 317 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { 318 slp = acb->xs->sc_link; 319 i = slp->scsipi_scsi.target; 320 if(!(sc->sc_tinfo[i].lubusy & (1 << slp->scsipi_scsi.lun))) { 321 struct siop_tinfo *ti = &sc->sc_tinfo[i]; 322 323 TAILQ_REMOVE(&sc->ready_list, acb, chain); 324 sc->sc_nexus = acb; 325 slp = acb->xs->sc_link; 326 ti = &sc->sc_tinfo[slp->scsipi_scsi.target]; 327 ti->lubusy |= (1 << slp->scsipi_scsi.lun); 328 break; 329 } 330 } 331 332 if (acb == NULL) { 333 #ifdef DEBUGXXX 334 printf("%s: siopng_sched didn't find ready command\n", 335 sc->sc_dev.dv_xname); 336 #endif 337 return; 338 } 339 340 if (acb->xs->xs_control & XS_CTL_RESET) 341 siopngreset(sc); 342 343 #if 0 344 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ 345 #endif 346 ++sc->sc_active; 347 siopng_select(sc); 348 } 349 350 void 351 siopng_scsidone(acb, stat) 352 struct siop_acb *acb; 353 int stat; 354 { 355 struct scsipi_xfer *xs; 356 struct scsipi_link *slp; 357 struct siop_softc *sc; 358 int dosched = 0; 359 360 if (acb == NULL || (xs = acb->xs) == NULL) { 361 #ifdef DIAGNOSTIC 362 printf("siopng_scsidone: NULL acb or scsipi_xfer\n"); 363 #if defined(DEBUG) && defined(DDB) 364 Debugger(); 365 #endif 366 #endif 367 return; 368 } 369 slp = xs->sc_link; 370 sc = slp->adapter_softc; 371 /* 372 * is this right? 373 */ 374 xs->status = stat; 375 376 if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { 377 if (stat == SCSI_CHECK) { 378 struct scsipi_sense *ss = (void *)&acb->cmd; 379 bzero(ss, sizeof(*ss)); 380 ss->opcode = REQUEST_SENSE; 381 ss->byte2 = slp->scsipi_scsi.lun << 5; 382 ss->length = sizeof(struct scsipi_sense_data); 383 acb->clen = sizeof(*ss); 384 acb->daddr = (char *)&xs->sense.scsi_sense; 385 acb->dleft = sizeof(struct scsipi_sense_data); 386 acb->flags = ACB_ACTIVE | ACB_CHKSENSE; 387 TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); 388 --sc->sc_active; 389 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 390 ~(1 << slp->scsipi_scsi.lun); 391 sc->sc_tinfo[slp->scsipi_scsi.target].senses++; 392 if (sc->sc_nexus == acb) { 393 sc->sc_nexus = NULL; 394 siopng_sched(sc); 395 } 396 SIOP_TRACE('d','s',0,0) 397 return; 398 } 399 } 400 if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { 401 xs->error = XS_SENSE; 402 } else { 403 xs->resid = 0; /* XXXX */ 404 } 405 #if whataboutthisone 406 case SCSI_BUSY: 407 xs->error = XS_BUSY; 408 break; 409 #endif 410 xs->xs_status |= XS_STS_DONE; 411 412 /* 413 * Remove the ACB from whatever queue it's on. We have to do a bit of 414 * a hack to figure out which queue it's on. Note that it is *not* 415 * necessary to cdr down the ready queue, but we must cdr down the 416 * nexus queue and see if it's there, so we can mark the unit as no 417 * longer busy. This code is sickening, but it works. 418 */ 419 if (acb == sc->sc_nexus) { 420 sc->sc_nexus = NULL; 421 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy &= 422 ~(1<<slp->scsipi_scsi.lun); 423 if (sc->ready_list.tqh_first) 424 dosched = 1; /* start next command */ 425 --sc->sc_active; 426 SIOP_TRACE('d','a',stat,0) 427 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { 428 TAILQ_REMOVE(&sc->ready_list, acb, chain); 429 SIOP_TRACE('d','r',stat,0) 430 } else { 431 register struct siop_acb *acb2; 432 for (acb2 = sc->nexus_list.tqh_first; acb2; 433 acb2 = acb2->chain.tqe_next) 434 if (acb2 == acb) { 435 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 436 sc->sc_tinfo[slp->scsipi_scsi.target].lubusy 437 &= ~(1<<slp->scsipi_scsi.lun); 438 --sc->sc_active; 439 break; 440 } 441 if (acb2) 442 ; 443 else if (acb->chain.tqe_next) { 444 TAILQ_REMOVE(&sc->ready_list, acb, chain); 445 --sc->sc_active; 446 } else { 447 printf("%s: can't find matching acb\n", 448 sc->sc_dev.dv_xname); 449 #ifdef DDB 450 /* Debugger(); */ 451 #endif 452 } 453 SIOP_TRACE('d','n',stat,0); 454 } 455 /* Put it on the free list. */ 456 acb->flags = ACB_FREE; 457 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); 458 459 sc->sc_tinfo[slp->scsipi_scsi.target].cmds++; 460 461 scsipi_done(xs); 462 463 if (dosched && sc->sc_nexus == NULL) 464 siopng_sched(sc); 465 } 466 467 void 468 siopngabort(sc, rp, where) 469 register struct siop_softc *sc; 470 siop_regmap_p rp; 471 char *where; 472 { 473 #ifdef fix_this 474 int i; 475 #endif 476 477 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n", 478 sc->sc_dev.dv_xname, 479 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist, 480 rp->siop_sien, rp->siop_sbcl); 481 siopng_dump_registers(sc); 482 483 if (sc->sc_active > 0) { 484 #ifdef TODO 485 SET_SBIC_cmd (rp, SBIC_CMD_ABORT); 486 WAIT_CIP (rp); 487 488 GET_SBIC_asr (rp, asr); 489 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) 490 { 491 /* ok, get more drastic.. */ 492 493 SET_SBIC_cmd (rp, SBIC_CMD_RESET); 494 delay(25); 495 SBIC_WAIT(rp, SBIC_ASR_INT, 0); 496 GET_SBIC_csr (rp, csr); /* clears interrupt also */ 497 498 return; 499 } 500 501 do 502 { 503 SBIC_WAIT (rp, SBIC_ASR_INT, 0); 504 GET_SBIC_csr (rp, csr); 505 } 506 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) 507 && (csr != SBIC_CSR_CMD_INVALID)); 508 #endif 509 510 /* lets just hope it worked.. */ 511 #ifdef fix_this 512 for (i = 0; i < 2; ++i) { 513 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != 514 sc->sc_cur) { 515 printf ("siopngabort: cleanup!\n"); 516 sc->sc_iob[i].sc_xs = NULL; 517 } 518 } 519 #endif /* fix_this */ 520 /* sc->sc_active = 0; */ 521 } 522 } 523 524 void 525 siopnginitialize(sc) 526 struct siop_softc *sc; 527 { 528 int i; 529 u_int inhibit_sync; 530 extern u_long scsi_nosync; 531 extern int shift_nosync; 532 533 /* 534 * Need to check that scripts is on a long word boundary 535 * Also should verify that dev doesn't span non-contiguous 536 * physical pages. 537 */ 538 sc->sc_scriptspa = kvtop((caddr_t)siopng_scripts); 539 540 /* 541 * malloc sc_acb to ensure that DS is on a long word boundary. 542 */ 543 544 MALLOC(sc->sc_acb, struct siop_acb *, 545 sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); 546 if (sc->sc_acb == NULL) 547 panic("siopnginitialize: ACB malloc failed!"); 548 549 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; 550 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; 551 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; 552 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ 553 if (sc->sc_minsync < 25) 554 sc->sc_minsync = 25; 555 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */ 556 if (sc->sc_clock_freq <= 25) { 557 sc->sc_dcntl |= 0x80; /* SCLK/1 */ 558 sc->sc_tcp[0] = sc->sc_tcp[1]; 559 } else if (sc->sc_clock_freq <= 37) { 560 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */ 561 sc->sc_tcp[0] = sc->sc_tcp[2]; 562 } else if (sc->sc_clock_freq <= 50) { 563 sc->sc_dcntl |= 0x00; /* SCLK/2 */ 564 sc->sc_tcp[0] = sc->sc_tcp[3]; 565 } else { 566 sc->sc_dcntl |= 0xc0; /* SCLK/3 */ 567 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; 568 } 569 570 if (scsi_nosync) { 571 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff; 572 shift_nosync += 16; /* XXX maxtarget */ 573 #ifdef DEBUG 574 if (inhibit_sync) 575 printf("%s: Inhibiting synchronous transfer %02x\n", 576 sc->sc_dev.dv_xname, inhibit_sync); 577 #endif 578 for (i = 0; i < 16; ++i) /* XXX maxtarget */ 579 if (inhibit_sync & (1 << i)) 580 siopng_inhibit_sync[i] = 1; 581 } 582 583 siopngreset (sc); 584 } 585 586 void 587 siopngreset(sc) 588 struct siop_softc *sc; 589 { 590 siop_regmap_p rp; 591 u_int i, s; 592 u_short dummy; 593 struct siop_acb *acb; 594 595 rp = sc->sc_siopp; 596 597 if (sc->sc_flags & SIOP_ALIVE) 598 siopngabort(sc, rp, "reset"); 599 600 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ 601 602 s = splbio(); 603 604 /* 605 * Reset the chip 606 * XXX - is this really needed? 607 */ 608 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ 609 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ 610 rp->siop_istat &= ~SIOP_ISTAT_RST; 611 /* 612 * Reset SCSI bus (do we really want this?) 613 */ 614 rp->siop_sien = 0; 615 rp->siop_scntl1 |= SIOP_SCNTL1_RST; 616 delay(1); 617 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; 618 619 /* 620 * Set up various chip parameters 621 */ 622 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */ 623 delay(20); 624 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */ 625 rp->siop_scntl3 = 0x15; /* SCF/CCF*/ 626 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */ 627 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */ 628 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG; 629 rp->siop_dcntl = sc->sc_dcntl; 630 rp->siop_dmode = 0xc0; /* XXX burst length */ 631 rp->siop_sien = 0x00; /* don't enable interrupts yet */ 632 rp->siop_dien = 0x00; /* don't enable interrupts yet */ 633 rp->siop_scid = sc->sc_link.scsipi_scsi.adapter_target | 634 SIOP_SCID_RRE | SIOP_SCID_SRE; 635 rp->siop_respid = 1 << sc->sc_link.scsipi_scsi.adapter_target; 636 rp->siop_dwt = 0x00; 637 rp->siop_stime0 = 0x0c; /* XXXXX check */ 638 639 /* will need to re-negotiate sync xfers */ 640 bzero(&sc->sc_sync, sizeof (sc->sc_sync)); 641 642 i = rp->siop_istat; 643 if (i & SIOP_ISTAT_SIP) 644 dummy = rp->siop_sist; 645 if (i & SIOP_ISTAT_DIP) 646 dummy = rp->siop_dstat; 647 648 splx (s); 649 650 delay (siopng_reset_delay * 1000); 651 652 /* 653 * is lower half unterminated? 654 */ 655 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) { 656 printf(" no SCSI termination, host adapter deactivated.\n"); 657 sc->sc_link.scsipi_scsi.max_target = -1; /* XXX */ 658 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF); 659 /* disable SCSI and DMA interrupts */ 660 sc->sc_sien = 0; 661 sc->sc_dien = 0; 662 rp->siop_sien = sc->sc_sien; 663 rp->siop_dien = sc->sc_dien; 664 665 return; 666 } 667 668 /* 669 * Check if upper half of SCSI bus is unterminated, and disallow 670 * disconnections if it appears to be unterminated. 671 */ 672 if ((rp->siop_sbdl & 0xff00) == 0xff00) { 673 printf(" NO WIDE TERM"); 674 /* XXX need to restrict maximum target ID as well? */ 675 sc->sc_link.scsipi_scsi.max_target = 7; 676 for (i = 0; i < 16; ++i) { 677 siopng_allow_disc[i] = 0; 678 siopng_inhibit_wide[i] |= 0x80; 679 } 680 } 681 682 printf("siopng type %s id %d reset V%d\n", 683 siopng_chips[rp->siop_macntl>>4], 684 sc->sc_link.scsipi_scsi.adapter_target, 685 rp->siop_ctest3 >> 4); 686 687 if ((sc->sc_flags & SIOP_ALIVE) == 0) { 688 TAILQ_INIT(&sc->ready_list); 689 TAILQ_INIT(&sc->nexus_list); 690 TAILQ_INIT(&sc->free_list); 691 sc->sc_nexus = NULL; 692 acb = sc->sc_acb; 693 bzero(acb, sizeof(struct siop_acb) * SIOP_NACB); 694 for (i = 0; i < SIOP_NACB; i++) { 695 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); 696 acb++; 697 } 698 bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); 699 } else { 700 if (sc->sc_nexus != NULL) { 701 sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; 702 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); 703 } 704 while ((acb = sc->nexus_list.tqh_first) > 0) { 705 acb->xs->error = XS_DRIVER_STUFFUP; 706 siopng_scsidone(acb, acb->stat[0]); 707 } 708 } 709 710 sc->sc_flags |= SIOP_ALIVE; 711 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); 712 /* enable SCSI and DMA interrupts */ 713 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/ 714 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC | 715 SIOP_SIEN_RST | SIOP_SIEN_PAR; 716 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | 717 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; 718 rp->siop_sien = sc->sc_sien; 719 rp->siop_dien = sc->sc_dien; 720 /*siopng_dump_registers(sc);*/ 721 } 722 723 /* 724 * Setup Data Storage for 53C720/770 and start SCRIPTS processing 725 */ 726 727 void 728 siopng_start (sc, target, lun, cbuf, clen, buf, len) 729 struct siop_softc *sc; 730 int target; 731 int lun; 732 u_char *cbuf; 733 int clen; 734 u_char *buf; 735 int len; 736 { 737 siop_regmap_p rp = sc->sc_siopp; 738 int nchain; 739 int count, tcount; 740 char *addr, *dmaend; 741 struct siop_acb *acb = sc->sc_nexus; 742 #ifdef DEBUG 743 int i; 744 #endif 745 746 #ifdef DEBUG 747 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 748 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n", 749 rp, &siopng_scripts, &acb->ds, sc->sc_active); 750 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n", 751 rp->siop_istat, rp->siop_sfbr, rp->siop_respid, 752 rp->siop_sien, rp->siop_dien); 753 #ifdef DDB 754 /*Debugger();*/ 755 #endif 756 } 757 #endif 758 acb->msgout[0] = MSG_IDENTIFY | lun; 759 if (siopng_allow_disc[target] & 2 || 760 (siopng_allow_disc[target] && len == 0)) 761 acb->msgout[0] = MSG_IDENTIFY_DR | lun; 762 acb->status = 0; 763 acb->stat[0] = -1; 764 acb->msg[0] = -1; 765 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) | 766 (sc->sc_sync[target].scntl3 << 24); 767 acb->ds.idlen = 1; 768 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); 769 acb->ds.cmdlen = clen; 770 acb->ds.cmdbuf = (char *) kvtop(cbuf); 771 acb->ds.stslen = 1; 772 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); 773 acb->ds.msglen = 1; 774 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); 775 acb->msg[1] = -1; 776 acb->ds.msginlen = 1; 777 acb->ds.extmsglen = 1; 778 acb->ds.synmsglen = 3; 779 acb->ds.msginbuf = acb->ds.msgbuf + 1; 780 acb->ds.extmsgbuf = acb->ds.msginbuf + 1; 781 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1; 782 bzero(&acb->ds.chain, sizeof (acb->ds.chain)); 783 784 if (sc->sc_sync[target].state == NEG_WIDE) { 785 if (siopng_inhibit_wide[target]) { 786 sc->sc_sync[target].state = NEG_SYNC; 787 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS; 788 #ifdef DEBUG 789 if (siopngsync_debug) 790 printf ("Forcing target %d narrow\n", target); 791 #endif 792 } 793 else { 794 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 795 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 796 acb->msg[2] = -1; 797 acb->msgout[1] = MSG_EXT_MESSAGE; 798 acb->msgout[2] = 2; 799 acb->msgout[3] = MSG_WIDE_REQ; 800 acb->msgout[4] = 1; 801 acb->ds.idlen = 5; 802 acb->ds.synmsglen = 2; 803 sc->sc_sync[target].state = NEG_WAITW; 804 #ifdef DEBUG 805 if (siopngsync_debug) 806 printf("Sending wide request to target %d\n", target); 807 #endif 808 } 809 } 810 if (sc->sc_sync[target].state == NEG_SYNC) { 811 if (siopng_inhibit_sync[target]) { 812 sc->sc_sync[target].state = NEG_DONE; 813 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 814 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 815 sc->sc_sync[target].sxfer = 0; 816 #ifdef DEBUG 817 if (siopngsync_debug) 818 printf ("Forcing target %d asynchronous\n", target); 819 #endif 820 } 821 else { 822 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */ 823 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 824 acb->msg[2] = -1; 825 acb->msgout[1] = MSG_EXT_MESSAGE; 826 acb->msgout[2] = 3; 827 acb->msgout[3] = MSG_SYNC_REQ; 828 #ifdef MAXTOR_SYNC_KLUDGE 829 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ 830 #else 831 acb->msgout[4] = sc->sc_minsync; 832 #endif 833 acb->msgout[5] = SIOP_MAX_OFFSET; 834 acb->ds.idlen = 6; 835 sc->sc_sync[target].state = NEG_WAITS; 836 #ifdef DEBUG 837 if (siopngsync_debug) 838 printf ("Sending sync request to target %d\n", target); 839 #endif 840 } 841 } 842 843 /* 844 * Build physical DMA addresses for scatter/gather I/O 845 */ 846 acb->iob_buf = buf; 847 acb->iob_len = len; 848 acb->iob_curbuf = acb->iob_curlen = 0; 849 nchain = 0; 850 count = len; 851 addr = buf; 852 dmaend = NULL; 853 while (count > 0) { 854 acb->ds.chain[nchain].databuf = (char *) kvtop (addr); 855 if (count < (tcount = NBPG - ((int) addr & PGOFSET))) 856 tcount = count; 857 858 #if DEBUG_ONLY_IF_DESPERATE 859 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n", 860 nchain, count, tcount, addr, 861 acb->ds.chain[nchain].databuf); 862 #endif 863 acb->ds.chain[nchain].datalen = tcount; 864 addr += tcount; 865 count -= tcount; 866 if (acb->ds.chain[nchain].databuf == dmaend) { 867 dmaend += acb->ds.chain[nchain].datalen; 868 acb->ds.chain[nchain].datalen = 0; 869 acb->ds.chain[--nchain].datalen += tcount; 870 #ifdef DEBUG 871 ++siopngdma_hits; 872 #endif 873 } 874 else { 875 dmaend = acb->ds.chain[nchain].databuf + 876 acb->ds.chain[nchain].datalen; 877 acb->ds.chain[nchain].datalen = tcount; 878 #ifdef DEBUG 879 if (nchain) /* Don't count miss on first one */ 880 ++siopngdma_misses; 881 #endif 882 } 883 ++nchain; 884 } 885 #ifdef DEBUG 886 if (nchain != 1 && len != 0 && siopng_debug & 3) { 887 printf ("DMA chaining set: %d\n", nchain); 888 for (i = 0; i < nchain; ++i) { 889 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf, 890 acb->ds.chain[i].datalen); 891 } 892 } 893 #endif 894 895 /* push data cache for all data the 53c720/770 needs to access */ 896 dma_cachectl ((caddr_t)acb, sizeof (struct siop_acb)); 897 dma_cachectl (cbuf, clen); 898 if (buf != NULL && len != 0) 899 dma_cachectl (buf, len); 900 #ifdef DEBUG 901 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { 902 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n", 903 rp, &siopng_scripts, &acb->ds, sc->sc_active); 904 #ifdef DDB 905 /*Debugger();*/ 906 #endif 907 } 908 #endif 909 if (sc->nexus_list.tqh_first == NULL) { 910 if (rp->siop_istat & SIOP_ISTAT_CON) 911 printf("%s: siopng_select while connected?\n", 912 sc->sc_dev.dv_xname); 913 rp->siop_temp = 0; 914 #ifndef FIXME 915 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 916 #endif 917 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 918 rp->siop_dsp = sc->sc_scriptspa; 919 SIOP_TRACE('s',1,0,0) 920 } else { 921 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { 922 rp->siop_istat = SIOP_ISTAT_SIGP; 923 SIOP_TRACE('s',2,0,0); 924 } 925 else { 926 SIOP_TRACE('s',3,rp->siop_istat,0); 927 } 928 } 929 #ifdef DEBUG 930 ++siopngstarts; 931 #endif 932 } 933 934 /* 935 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP 936 */ 937 938 int 939 siopng_checkintr(sc, istat, dstat, sist, status) 940 struct siop_softc *sc; 941 u_char istat; 942 u_char dstat; 943 u_short sist; 944 int *status; 945 { 946 siop_regmap_p rp = sc->sc_siopp; 947 struct siop_acb *acb = sc->sc_nexus; 948 int target = 0; 949 int dfifo, dbc, sstat0, sstat1, sstat2; 950 951 dfifo = rp->siop_dfifo; 952 dbc = rp->siop_dbc0; 953 sstat0 = rp->siop_sstat0; 954 sstat1 = rp->siop_sstat1; 955 sstat2 = rp->siop_sstat2; 956 rp->siop_ctest3 |= SIOP_CTEST8_CLF; 957 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) 958 ; 959 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF; 960 #ifdef DEBUG 961 ++siopngints; 962 #if 0 963 if (siopng_debug & 0x100) { 964 DCIAS(&acb->stat[0]); /* XXX */ 965 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n", 966 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); 967 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 968 acb->msg[0], acb->msg[1], acb->msg[2], 969 acb->msg[3], acb->msg[4], acb->msg[5]); 970 } 971 #endif 972 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || 973 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) { 974 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx", 975 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, 976 sc->sc_scriptspa + sizeof(siopng_scripts)); 977 printf(" istat %x dstat %x sist %x\n", 978 istat, dstat, sist); 979 #ifdef DDB 980 Debugger(); 981 #endif 982 } 983 #endif 984 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist); 985 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { 986 /* Normal completion status, or check condition */ 987 #ifdef DEBUG 988 if (rp->siop_dsa != kvtop((caddr_t)&acb->ds)) { 989 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa, 990 kvtop((caddr_t)&acb->ds)); 991 panic("*** siopng DSA invalid ***"); 992 } 993 #endif 994 target = acb->xs->sc_link->scsipi_scsi.target; 995 if (sc->sc_sync[target].state == NEG_WAITW) { 996 if (acb->msg[1] == 0xff) 997 printf ("%s: target %d ignored wide request\n", 998 sc->sc_dev.dv_xname, target); 999 else if (acb->msg[1] == MSG_REJECT) 1000 printf ("%s: target %d rejected wide request\n", 1001 sc->sc_dev.dv_xname, target); 1002 else { 1003 printf("%s: target %d (wide) %02x %02x %02x %02x\n", 1004 sc->sc_dev.dv_xname, target, acb->msg[1], 1005 acb->msg[2], acb->msg[3], acb->msg[4]); 1006 if (acb->msg[1] == MSG_EXT_MESSAGE && 1007 acb->msg[2] == 2 && 1008 acb->msg[3] == MSG_WIDE_REQ) 1009 sc->sc_sync[target].scntl3 = acb->msg[4] ? 1010 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS : 1011 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS; 1012 } 1013 sc->sc_sync[target].state = NEG_SYNC; 1014 } 1015 if (sc->sc_sync[target].state == NEG_WAITS) { 1016 if (acb->msg[1] == 0xff) 1017 printf ("%s: target %d ignored sync request\n", 1018 sc->sc_dev.dv_xname, target); 1019 else if (acb->msg[1] == MSG_REJECT) 1020 printf ("%s: target %d rejected sync request\n", 1021 sc->sc_dev.dv_xname, target); 1022 else 1023 /* XXX - need to set sync transfer parameters */ 1024 printf("%s: target %d (sync) %02x %02x %02x\n", 1025 sc->sc_dev.dv_xname, target, acb->msg[1], 1026 acb->msg[2], acb->msg[3]); 1027 sc->sc_sync[target].state = NEG_DONE; 1028 } 1029 dma_cachectl(&acb->stat[0], 1); 1030 *status = acb->stat[0]; 1031 #ifdef DEBUG 1032 if (rp->siop_sbcl & SIOP_BSY) { 1033 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", 1034 rp, &siopng_scripts, &acb->ds);*/ 1035 #ifdef DDB 1036 /*Debugger();*/ 1037 #endif 1038 } 1039 if (acb->msg[0] != 0x00) 1040 printf("%s: message was not COMMAND COMPLETE: %x\n", 1041 sc->sc_dev.dv_xname, acb->msg[0]); 1042 #endif 1043 if (sc->nexus_list.tqh_first) 1044 rp->siop_dcntl |= SIOP_DCNTL_STD; 1045 return 1; 1046 } 1047 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { 1048 target = acb->xs->sc_link->scsipi_scsi.target; 1049 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 && 1050 acb->msg[3] == MSG_WIDE_REQ) { 1051 #ifdef DEBUG 1052 if (siopngsync_debug) 1053 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n", 1054 acb->msg[0], acb->msg[1], acb->msg[2], 1055 acb->msg[3], acb->msg[4], acb->msg[5]); 1056 #endif 1057 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS); 1058 if (acb->msg[2] == 2 && 1059 acb->msg[3] == MSG_WIDE_REQ && 1060 acb->msg[4] != 0) { 1061 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS; 1062 printf ("%s: target %d now wide %d\n", 1063 sc->sc_dev.dv_xname, target, 1064 acb->msg[4]); 1065 } 1066 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1067 if (sc->sc_sync[target].state == NEG_WAITW) { 1068 sc->sc_sync[target].state = NEG_SYNC; 1069 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1070 return(0); 1071 } 1072 rp->siop_dcntl |= SIOP_DCNTL_STD; 1073 sc->sc_sync[target].state = NEG_SYNC; 1074 return (0); 1075 } 1076 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && 1077 acb->msg[3] == MSG_SYNC_REQ) { 1078 #ifdef DEBUG 1079 if (siopngsync_debug) 1080 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", 1081 acb->msg[0], acb->msg[1], acb->msg[2], 1082 acb->msg[3], acb->msg[4], acb->msg[5]); 1083 #endif 1084 sc->sc_sync[target].sxfer = 0; 1085 sc->sc_sync[target].scntl3 = 5 | /* XXX */ 1086 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */ 1087 if (acb->msg[2] == 3 && 1088 acb->msg[3] == MSG_SYNC_REQ && 1089 acb->msg[5] != 0) { 1090 #ifdef MAXTOR_KLUDGE 1091 /* 1092 * Kludge for my Maxtor XT8580S 1093 * It accepts whatever we request, even 1094 * though it won't work. So we ask for 1095 * a short period than we can handle. If 1096 * the device says it can do it, use 208ns. 1097 * If the device says it can do less than 1098 * 100ns, then we limit it to 100ns. 1099 */ 1100 if (acb->msg[4] && acb->msg[4] < 100 / 4) { 1101 #ifdef DEBUG 1102 printf ("%d: target %d wanted %dns period\n", 1103 sc->sc_dev.dv_xname, target, 1104 acb->msg[4] * 4); 1105 #endif 1106 if (acb->msg[4] == 50 / 4) 1107 acb->msg[4] = 208 / 4; 1108 else 1109 acb->msg[4] = 100 / 4; 1110 } 1111 #endif /* MAXTOR_KLUDGE */ 1112 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", 1113 sc->sc_dev.dv_xname, target, 1114 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4, 1115 acb->msg[5]); 1116 scsi_period_to_siopng (sc, target); 1117 } 1118 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1119 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1120 if (sc->sc_sync[target].state == NEG_WAITS) { 1121 sc->sc_sync[target].state = NEG_DONE; 1122 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; 1123 return(0); 1124 } 1125 rp->siop_dcntl |= SIOP_DCNTL_STD; 1126 sc->sc_sync[target].state = NEG_DONE; 1127 return (0); 1128 } 1129 /* XXX - not SDTR message */ 1130 } 1131 if (sist & SIOP_SIST_MA) { /* Phase mismatch */ 1132 #ifdef DEBUG 1133 ++siopngphmm; 1134 if (acb == NULL) 1135 printf("%s: Phase mismatch with no active command?\n", 1136 sc->sc_dev.dv_xname); 1137 #endif 1138 if (acb->iob_len) { 1139 int adjust; 1140 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); 1141 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */ 1142 ++adjust; 1143 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */ 1144 ++adjust; 1145 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */ 1146 ++adjust; 1147 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */ 1148 ++adjust; 1149 acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; 1150 acb->iob_curlen += adjust; 1151 acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; 1152 #ifdef DEBUG 1153 if (siopng_debug & 0x100) { 1154 int i; 1155 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n", 1156 acb->iob_curbuf, acb->iob_curlen, dfifo, 1157 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb); 1158 if (acb->ds.chain[1].datalen) { 1159 for (i = 0; acb->ds.chain[i].datalen; ++i) 1160 printf("chain[%d] addr %p len %lx\n", 1161 i, acb->ds.chain[i].databuf, 1162 acb->ds.chain[i].datalen); 1163 } 1164 } 1165 #endif 1166 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1167 } 1168 #ifdef DEBUG 1169 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); 1170 if (siopng_debug & 9) 1171 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n", 1172 rp->siop_sbcl, 1173 rp->siop_dsp - sc->sc_scriptspa, 1174 *((long *)&rp->siop_dcmd)); 1175 #endif 1176 if ((rp->siop_sbcl & SIOP_REQ) == 0) { 1177 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", 1178 rp->siop_sbcl, rp->siop_dsp); 1179 #if defined(DEBUG) && defined(DDB) 1180 Debugger(); 1181 #endif 1182 } 1183 switch (rp->siop_sbcl & 7) { 1184 case 0: /* data out */ 1185 case 1: /* data in */ 1186 case 2: /* status */ 1187 case 3: /* command */ 1188 case 6: /* message in */ 1189 case 7: /* message out */ 1190 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1191 break; 1192 default: 1193 goto bad_phase; 1194 } 1195 return 0; 1196 } 1197 if (sist & SIOP_SIST_STO) { /* Select timed out */ 1198 #ifdef DEBUG 1199 if (acb == NULL) 1200 printf("%s: Select timeout with no active command?\n", 1201 sc->sc_dev.dv_xname); 1202 if (rp->siop_sbcl & SIOP_BSY) { 1203 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n", 1204 rp, &siopng_scripts, &acb->ds); 1205 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n", 1206 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist); 1207 if (!(rp->siop_sbcl & SIOP_BSY)) { 1208 printf ("Yikes, it's not busy now!\n"); 1209 #if 0 1210 *status = -1; 1211 if (sc->nexus_list.tqh_first) 1212 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1213 return 1; 1214 #endif 1215 } 1216 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ 1217 return (0); 1218 #ifdef DDB 1219 Debugger(); 1220 #endif 1221 } 1222 #endif 1223 *status = -1; 1224 acb->xs->error = XS_SELTIMEOUT; 1225 if (sc->nexus_list.tqh_first) 1226 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1227 return 1; 1228 } 1229 if (acb) 1230 target = acb->xs->sc_link->scsipi_scsi.target; 1231 else 1232 target = 7; 1233 if (sist & SIOP_SIST_UDC) { 1234 #ifdef DEBUG 1235 if (acb == NULL) 1236 printf("%s: Unexpected disconnect with no active command?\n", 1237 sc->sc_dev.dv_xname); 1238 printf ("%s: target %d disconnected unexpectedly\n", 1239 sc->sc_dev.dv_xname, target); 1240 siopng_dump_registers(sc); 1241 siopng_dump(sc); 1242 #endif 1243 #if 0 1244 siopngabort (sc, rp, "siopngchkintr"); 1245 #endif 1246 *status = STS_BUSY; 1247 if (sc->nexus_list.tqh_first) 1248 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1249 return (acb != NULL); 1250 } 1251 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || 1252 rp->siop_dsps == 0xff02)) { 1253 #ifdef DEBUG 1254 if (siopng_debug & 0x100) 1255 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", 1256 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, 1257 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, 1258 acb->iob_curbuf, acb->iob_curlen, 1259 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb); 1260 #endif 1261 if (acb == NULL) { 1262 printf("%s: Disconnect with no active command?\n", 1263 sc->sc_dev.dv_xname); 1264 return (0); 1265 } 1266 /* 1267 * XXXX need to update iob_curbuf/iob_curlen to reflect 1268 * current data transferred. If device disconnected in 1269 * the middle of a DMA block, they should already be set 1270 * by the phase change interrupt. If the disconnect 1271 * occurs on a DMA block boundary, we have to figure out 1272 * which DMA block it was. 1273 */ 1274 if (acb->iob_len && rp->siop_temp) { 1275 int n = rp->siop_temp - sc->sc_scriptspa; 1276 1277 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) 1278 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n", 1279 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, 1280 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); 1281 if (n < Ent_datain) 1282 n = (n - Ent_dataout) / 16; 1283 else 1284 n = (n - Ent_datain) / 16; 1285 if (n <= 0 && n > DMAMAXIO) 1286 printf("TEMP invalid %d\n", n); 1287 else { 1288 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; 1289 acb->iob_curlen = acb->ds.chain[n].datalen; 1290 } 1291 #ifdef DEBUG 1292 if (siopng_debug & 0x100) { 1293 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); 1294 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf, 1295 acb->iob_curlen); 1296 } 1297 #endif 1298 } 1299 /* 1300 * If data transfer was interrupted by disconnect, iob_curbuf 1301 * and iob_curlen should reflect the point of interruption. 1302 * Adjust the DMA chain so that the data transfer begins 1303 * at the appropriate place upon reselection. 1304 * XXX This should only be done on save data pointer message? 1305 */ 1306 if (acb->iob_curlen) { 1307 int i, j; 1308 1309 #ifdef DEBUG 1310 if (siopng_debug & 0x100) 1311 printf ("%s: adjusting DMA chain\n", 1312 sc->sc_dev.dv_xname); 1313 if (rp->siop_dsps == 0xff02) 1314 printf ("%s: ID %02x disconnected without Save Data Pointers\n", 1315 sc->sc_dev.dv_xname, 1 << target); 1316 #endif 1317 for (i = 0; i < DMAMAXIO; ++i) { 1318 if (acb->ds.chain[i].datalen == 0) 1319 break; 1320 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && 1321 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + 1322 acb->ds.chain[i].datalen)) 1323 break; 1324 } 1325 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) { 1326 printf("couldn't find saved data pointer: "); 1327 printf("curbuf %lx curlen %lx i %d\n", 1328 acb->iob_curbuf, acb->iob_curlen, i); 1329 #ifdef DDB 1330 Debugger(); 1331 #endif 1332 } 1333 #ifdef DEBUG 1334 if (siopng_debug & 0x100) 1335 printf(" chain[0]: %p/%lx -> %lx/%lx\n", 1336 acb->ds.chain[0].databuf, 1337 acb->ds.chain[0].datalen, 1338 acb->iob_curbuf, 1339 acb->iob_curlen); 1340 #endif 1341 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; 1342 acb->ds.chain[0].datalen = acb->iob_curlen; 1343 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { 1344 #ifdef DEBUG 1345 if (siopng_debug & 0x100) 1346 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j, 1347 acb->ds.chain[j].databuf, 1348 acb->ds.chain[j].datalen, 1349 acb->ds.chain[i].databuf, 1350 acb->ds.chain[i].datalen); 1351 #endif 1352 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; 1353 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; 1354 } 1355 if (j < DMAMAXIO) 1356 acb->ds.chain[j].datalen = 0; 1357 DCIAS(kvtop((caddr_t)&acb->ds.chain)); 1358 } 1359 ++sc->sc_tinfo[target].dconns; 1360 /* 1361 * add nexus to waiting list 1362 * clear nexus 1363 * try to start another command for another target/lun 1364 */ 1365 acb->status = sc->sc_flags & SIOP_INTSOFF; 1366 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); 1367 sc->sc_nexus = NULL; /* no current device */ 1368 /* start script to wait for reselect */ 1369 if (sc->sc_nexus == NULL) 1370 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; 1371 /* XXXX start another command ? */ 1372 if (sc->ready_list.tqh_first) 1373 siopng_sched(sc); 1374 #if 0 1375 else 1376 rp->siop_dcntl |= SIOP_DCNTL_STD; 1377 #endif 1378 return (0); 1379 } 1380 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { 1381 int reselid = rp->siop_scratcha & 0x7f; 1382 int reselun = rp->siop_sfbr & 0x07; 1383 1384 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ 1385 #ifdef DEBUG 1386 if (siopng_debug & 0x100) 1387 printf ("%s: target ID %02x reselected dsps %lx\n", 1388 sc->sc_dev.dv_xname, reselid, 1389 rp->siop_dsps); 1390 if ((rp->siop_sfbr & 0x80) == 0) 1391 printf("%s: Reselect message in was not identify: %x\n", 1392 sc->sc_dev.dv_xname, rp->siop_sfbr); 1393 #endif 1394 if (sc->sc_nexus) { 1395 #ifdef DEBUG 1396 if (siopng_debug & 0x100) 1397 printf ("%s: reselect ID %02x w/active\n", 1398 sc->sc_dev.dv_xname, reselid); 1399 #endif 1400 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); 1401 sc->sc_tinfo[sc->sc_nexus->xs->sc_link->scsipi_scsi.target].lubusy 1402 &= ~(1 << sc->sc_nexus->xs->sc_link->scsipi_scsi.lun); 1403 --sc->sc_active; 1404 } 1405 /* 1406 * locate acb of reselecting device 1407 * set sc->sc_nexus to acb 1408 */ 1409 for (acb = sc->nexus_list.tqh_first; acb; 1410 acb = acb->chain.tqe_next) { 1411 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) || 1412 reselun != (acb->msgout[0] & 0x07)) 1413 continue; 1414 TAILQ_REMOVE(&sc->nexus_list, acb, chain); 1415 sc->sc_nexus = acb; 1416 sc->sc_flags |= acb->status; 1417 acb->status = 0; 1418 DCIAS(kvtop(&acb->stat[0])); 1419 rp->siop_dsa = kvtop((caddr_t)&acb->ds); 1420 rp->siop_sxfer = 1421 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].sxfer; 1422 #ifndef FIXME 1423 rp->siop_scntl3 = 1424 sc->sc_sync[acb->xs->sc_link->scsipi_scsi.target].scntl3; 1425 #endif 1426 break; 1427 } 1428 if (acb == NULL) { 1429 printf("%s: target ID %02x reselect nexus_list %p\n", 1430 sc->sc_dev.dv_xname, reselid, 1431 sc->nexus_list.tqh_first); 1432 panic("unable to find reselecting device"); 1433 } 1434 dma_cachectl ((caddr_t)acb, sizeof(*acb)); 1435 rp->siop_temp = 0; 1436 rp->siop_dcntl |= SIOP_DCNTL_STD; 1437 return (0); 1438 } 1439 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { 1440 #ifdef DEBUG 1441 u_short ctest2 = rp->siop_ctest2; 1442 1443 /* reselect was interrupted (by Sig_P or select) */ 1444 if (siopng_debug & 0x100 || 1445 (ctest2 & SIOP_CTEST2_SIGP) == 0) 1446 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", 1447 sc->sc_dev.dv_xname, rp->siop_scntl1, 1448 ctest2, rp->siop_sfbr, istat, rp->siop_istat); 1449 #endif 1450 /* XXX assumes it was not select */ 1451 if (sc->sc_nexus == NULL) { 1452 #ifdef DEBUG 1453 printf("%s: reselect interrupted, sc_nexus == NULL\n", 1454 sc->sc_dev.dv_xname); 1455 #if 0 1456 siopng_dump(sc); 1457 #ifdef DDB 1458 Debugger(); 1459 #endif 1460 #endif 1461 #endif 1462 rp->siop_dcntl |= SIOP_DCNTL_STD; 1463 return(0); 1464 } 1465 target = sc->sc_nexus->xs->sc_link->scsipi_scsi.target; 1466 rp->siop_temp = 0; 1467 rp->siop_dsa = kvtop((caddr_t)&sc->sc_nexus->ds); 1468 rp->siop_sxfer = sc->sc_sync[target].sxfer; 1469 #ifndef FIXME 1470 rp->siop_scntl3 = sc->sc_sync[target].scntl3; 1471 #endif 1472 rp->siop_dsp = sc->sc_scriptspa; 1473 return (0); 1474 } 1475 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { 1476 if (acb == NULL) 1477 printf("%s: Bad message-in with no active command?\n", 1478 sc->sc_dev.dv_xname); 1479 /* Unrecognized message in byte */ 1480 dma_cachectl (&acb->msg[1],1); 1481 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", 1482 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); 1483 /* what should be done here? */ 1484 DCIAS(kvtop(&acb->msg[1])); 1485 rp->siop_dsp = sc->sc_scriptspa + Ent_switch; 1486 return (0); 1487 } 1488 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { 1489 /* Status phase wasn't followed by message in phase? */ 1490 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n", 1491 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl); 1492 if (rp->siop_sbcl == 0xa7) { 1493 /* It is now, just continue the script? */ 1494 rp->siop_dcntl |= SIOP_DCNTL_STD; 1495 return (0); 1496 } 1497 } 1498 if (sist == 0 && dstat & SIOP_DSTAT_SIR) { 1499 dma_cachectl (&acb->stat[0], 1); 1500 dma_cachectl (&acb->msg[0], 1); 1501 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n", 1502 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], 1503 rp->siop_sbcl); 1504 siopngreset (sc); 1505 *status = -1; 1506 return 0; /* siopngreset has cleaned up */ 1507 } 1508 if (sist & SIOP_SIST_SGE) 1509 printf ("SIOP: SCSI Gross Error\n"); 1510 if (sist & SIOP_SIST_PAR) 1511 printf ("SIOP: Parity Error\n"); 1512 if (dstat & SIOP_DSTAT_IID) 1513 printf ("SIOP: Invalid instruction detected\n"); 1514 bad_phase: 1515 /* 1516 * temporary panic for unhandled conditions 1517 * displays various things about the 53C720/770 status and registers 1518 * then panics. 1519 * XXXX need to clean this up to print out the info, reset, and continue 1520 */ 1521 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds); 1522 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, 1523 kvtop((caddr_t)&acb->ds), kvtop((caddr_t)rp), rp->siop_dsp, 1524 *((long *)&rp->siop_dcmd)); 1525 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n", 1526 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa, 1527 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); 1528 #ifdef DEBUG 1529 if (siopng_debug & 0x20) 1530 panic("siopngchkintr: **** temp ****"); 1531 #endif 1532 #ifdef DDB 1533 Debugger (); 1534 #endif 1535 siopngreset (sc); /* hard reset */ 1536 *status = -1; 1537 return 0; /* siopngreset cleaned up */ 1538 } 1539 1540 void 1541 siopng_select(sc) 1542 struct siop_softc *sc; 1543 { 1544 siop_regmap_p rp; 1545 struct siop_acb *acb = sc->sc_nexus; 1546 1547 #ifdef DEBUG 1548 if (siopng_debug & 1) 1549 printf ("%s: select ", sc->sc_dev.dv_xname); 1550 #endif 1551 1552 rp = sc->sc_siopp; 1553 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) { 1554 sc->sc_flags |= SIOP_INTSOFF; 1555 sc->sc_flags &= ~SIOP_INTDEFER; 1556 if ((rp->siop_istat & 0x08) == 0) { 1557 rp->siop_sien = 0; 1558 rp->siop_dien = 0; 1559 } 1560 #if 0 1561 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { 1562 sc->sc_flags &= ~SIOP_INTSOFF; 1563 if ((rp->siop_istat & 0x08) == 0) { 1564 rp->siop_sien = sc->sc_sien; 1565 rp->siop_dien = sc->sc_dien; 1566 } 1567 #endif 1568 } 1569 #ifdef DEBUG 1570 if (siopng_debug & 1) 1571 printf ("siopng_select: target %x cmd %02x ds %p\n", 1572 acb->xs->sc_link->scsipi_scsi.target, acb->cmd.opcode, 1573 &sc->sc_nexus->ds); 1574 #endif 1575 1576 siopng_start(sc, acb->xs->sc_link->scsipi_scsi.target, 1577 acb->xs->sc_link->scsipi_scsi.lun, 1578 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); 1579 1580 return; 1581 } 1582 1583 /* 1584 * 53C720/770 interrupt handler 1585 */ 1586 1587 void 1588 siopngintr (sc) 1589 register struct siop_softc *sc; 1590 { 1591 siop_regmap_p rp; 1592 u_char istat, dstat; 1593 u_short sist; 1594 int status; 1595 int s = splbio(); 1596 1597 istat = sc->sc_istat; 1598 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { 1599 splx(s); 1600 return; 1601 } 1602 1603 /* Got a valid interrupt on this device */ 1604 rp = sc->sc_siopp; 1605 dstat = sc->sc_dstat; 1606 sist = sc->sc_sist; 1607 if (dstat & SIOP_DSTAT_SIR) 1608 sc->sc_intcode = rp->siop_dsps; 1609 sc->sc_istat = 0; 1610 #ifdef DEBUG 1611 if (siopng_debug & 1) 1612 printf ("%s: intr istat %x dstat %x sist %x\n", 1613 sc->sc_dev.dv_xname, istat, dstat, sist); 1614 if (!sc->sc_active) { 1615 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n", 1616 sc->sc_dev.dv_xname, istat, dstat, sist, 1617 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0); 1618 } 1619 #endif 1620 1621 #ifdef DEBUG 1622 if (siopng_debug & 5) { 1623 DCIAS(kvtop(&sc->sc_nexus->stat[0])); 1624 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n", 1625 sc->sc_dev.dv_xname, istat, dstat, sist, 1626 rp->siop_dsps, rp->siop_sbcl, 1627 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); 1628 } 1629 #endif 1630 if (sc->sc_flags & SIOP_INTDEFER) { 1631 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); 1632 rp->siop_sien = sc->sc_sien; 1633 rp->siop_dien = sc->sc_dien; 1634 } 1635 if (siopng_checkintr (sc, istat, dstat, sist, &status)) { 1636 #if 1 1637 if (status == 0xff) 1638 printf ("siopngintr: status == 0xff\n"); 1639 #endif 1640 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { 1641 #if 0 1642 if (rp->siop_sbcl & SIOP_BSY) { 1643 printf ("%s: SCSI bus busy at completion", 1644 sc->sc_dev.dv_xname); 1645 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n", 1646 sc->sc_nexus->xs->sc_link->scsipi_scsi.target, 1647 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid, 1648 rp->siop_dsp - sc->sc_scriptspa); 1649 } 1650 #endif 1651 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ? 1652 sc->sc_nexus->stat[0] : -1); 1653 } 1654 } 1655 splx(s); 1656 } 1657 1658 /* 1659 * This is based on the Progressive Peripherals 33Mhz Zeus driver and will 1660 * not be correct for other 53c710 boards. 1661 * 1662 */ 1663 void 1664 scsi_period_to_siopng (sc, target) 1665 struct siop_softc *sc; 1666 int target; 1667 { 1668 int period, offset, sxfer, scntl3 = 0; 1669 1670 period = sc->sc_nexus->msg[4]; 1671 offset = sc->sc_nexus->msg[5]; 1672 #ifdef FIXME 1673 for (scntl3 = 1; scntl3 < 4; ++scntl3) { 1674 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3; 1675 if (sxfer >= 0 && sxfer <= 7) 1676 break; 1677 } 1678 if (scntl3 > 3) { 1679 printf("siopng sync: unable to compute sync params for period %dns\n", 1680 period * 4); 1681 /* 1682 * XXX need to pick a value we can do and renegotiate 1683 */ 1684 sxfer = scntl3 = 0; 1685 } else { 1686 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? 1687 offset : SIOP_MAX_OFFSET); 1688 #ifdef DEBUG_SYNC 1689 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x", 1690 period * 4, sxfer, scntl3); 1691 printf(" actual period %dns\n", 1692 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4)); 1693 #endif /* DEBUG_SYNC */ 1694 } 1695 #else /* FIXME */ 1696 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET; 1697 sxfer |= 0x20; /* XXX XFERP: 5 */ 1698 #ifndef FIXME 1699 if (period <= (50 / 4)) /* XXX */ 1700 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */ 1701 else if (period <= (100 / 4)) 1702 scntl3 = 0x35; /* SCF: /2, CCF: /4 */ 1703 else if (period <= (200 / 4)) 1704 scntl3 = 0x55; /* SCF: /4, CCF: /4 */ 1705 else 1706 scntl3 = 0xff; /* XXX ??? */ 1707 #else 1708 scntl3 = 5; 1709 #endif 1710 #endif 1711 sc->sc_sync[target].sxfer = sxfer; 1712 sc->sc_sync[target].scntl3 = scntl3 | 1713 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS); 1714 #ifdef DEBUG_SYNC 1715 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3); 1716 #endif 1717 } 1718 1719 void 1720 siopng_dump_registers(sc) 1721 struct siop_softc *sc; 1722 { 1723 siop_regmap_p rp = sc->sc_siopp; 1724 1725 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n", 1726 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3); 1727 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n", 1728 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg); 1729 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n", 1730 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl); 1731 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n", 1732 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2); 1733 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n", 1734 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3); 1735 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n", 1736 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6); 1737 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n", 1738 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0); 1739 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n", 1740 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl); 1741 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n", 1742 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3); 1743 printf(" istat %02x sien %04x sist %04x respid %04x\n", 1744 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid); 1745 printf(" sidl %04x sodl %04x sbdl %04x\n", 1746 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl); 1747 printf(" dsps %08lx dsp %08lx (+%lx)\n", 1748 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ? 1749 rp->siop_dsp - sc->sc_scriptspa : 0); 1750 printf(" dsa %08lx temp %08lx dnad %08lx\n", 1751 rp->siop_dsa, rp->siop_temp, rp->siop_dnad); 1752 printf(" scratcha %08lx scratchb %08lx adder %08lx\n", 1753 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder); 1754 } 1755 1756 #ifdef DEBUG 1757 1758 #if SIOP_TRACE_SIZE 1759 void 1760 siopng_dump_trace() 1761 { 1762 int i; 1763 1764 printf("siopng trace: next index %d\n", siopng_trix); 1765 i = siopng_trix; 1766 do { 1767 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i], 1768 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]); 1769 i = (i + 4) & (SIOP_TRACE_SIZE - 1); 1770 } while (i != siopng_trix); 1771 } 1772 #endif 1773 1774 void 1775 siopng_dump_acb(acb) 1776 struct siop_acb *acb; 1777 { 1778 u_char *b = (u_char *) &acb->cmd; 1779 int i; 1780 1781 printf("acb@%p ", acb); 1782 if (acb->xs == NULL) { 1783 printf("<unused>\n"); 1784 return; 1785 } 1786 printf("(%d:%d) flags %2x clen %2d cmd ", 1787 acb->xs->sc_link->scsipi_scsi.target, 1788 acb->xs->sc_link->scsipi_scsi.lun, acb->flags, acb->clen); 1789 for (i = acb->clen; i; --i) 1790 printf(" %02x", *b++); 1791 printf("\n"); 1792 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, 1793 acb->xs->datalen); 1794 printf("va %p:%lx ", acb->iob_buf, acb->iob_len); 1795 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); 1796 } 1797 1798 void 1799 siopng_dump(sc) 1800 struct siop_softc *sc; 1801 { 1802 struct siop_acb *acb; 1803 siop_regmap_p rp = sc->sc_siopp; 1804 int s; 1805 int i; 1806 1807 s = splbio(); 1808 #if SIOP_TRACE_SIZE 1809 siopng_dump_trace(); 1810 #endif 1811 printf("%s@%p regs %p istat %x\n", 1812 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); 1813 if ((acb = sc->free_list.tqh_first) > 0) { 1814 printf("Free list:\n"); 1815 while (acb) { 1816 siopng_dump_acb(acb); 1817 acb = acb->chain.tqe_next; 1818 } 1819 } 1820 if ((acb = sc->ready_list.tqh_first) > 0) { 1821 printf("Ready list:\n"); 1822 while (acb) { 1823 siopng_dump_acb(acb); 1824 acb = acb->chain.tqe_next; 1825 } 1826 } 1827 if ((acb = sc->nexus_list.tqh_first) > 0) { 1828 printf("Nexus list:\n"); 1829 while (acb) { 1830 siopng_dump_acb(acb); 1831 acb = acb->chain.tqe_next; 1832 } 1833 } 1834 if (sc->sc_nexus) { 1835 printf("Nexus:\n"); 1836 siopng_dump_acb(sc->sc_nexus); 1837 } 1838 for (i = 0; i < 8; ++i) { 1839 if (sc->sc_tinfo[i].cmds > 2) { 1840 printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", 1841 i, sc->sc_tinfo[i].cmds, 1842 sc->sc_tinfo[i].dconns, 1843 sc->sc_tinfo[i].senses, 1844 sc->sc_tinfo[i].lubusy); 1845 } 1846 } 1847 splx(s); 1848 } 1849 #endif 1850